Merge branch 'ub-launcher3-master' into pi-dev

am: 6303a794df

Change-Id: I66f6a79666134e1d8398ea5d726ba45ae184ce49

AndroidManifest-common.xml

@@ -87,9 +87,11 @@
             android:process=":wallpaper_chooser"
             android:permission="android.permission.BIND_JOB_SERVICE" />
 
-        <service android:name="com.android.launcher3.notification.NotificationListener"
-                 android:enabled="@bool/notification_badging_enabled"
-                 android:permission="android.permission.BIND_NOTIFICATION_LISTENER_SERVICE">
+        <service
+            android:name="com.android.launcher3.notification.NotificationListener"
+            android:label="@string/icon_badging_service_title"
+            android:enabled="@bool/notification_badging_enabled"
+            android:permission="android.permission.BIND_NOTIFICATION_LISTENER_SERVICE">
             <intent-filter>
                 <action android:name="android.service.notification.NotificationListenerService" />
             </intent-filter>

AndroidManifest.xml

@@ -71,7 +71,7 @@
             android:clearTaskOnLaunch="true"
             android:stateNotNeeded="true"
             android:windowSoftInputMode="adjustPan"
-            android:screenOrientation="nosensor"
+            android:screenOrientation="unspecified"
             android:configChanges="keyboard|keyboardHidden|navigation"
             android:resizeableActivity="true"
             android:resumeWhilePausing="true"

proguard.flags

@@ -39,7 +39,7 @@
   public int getY();
 }
 
--keep class com.android.launcher3.dragndrop.DragLayer$LayoutParams {
+-keep class com.android.launcher3.views.BaseDragLayer$LayoutParams {
   public void setWidth(int);
   public int getWidth();
   public void setHeight(int);
@@ -102,6 +102,11 @@
     public <init>(...);
 }
 
+# InstantAppResolver
+-keep class com.android.quickstep.InstantAppResolverImpl {
+    public <init>(...);
+}
+
 -keep interface com.android.launcher3.userevent.nano.LauncherLogProto.** {
   *;
 }

quickstep/AndroidManifest.xml

@@ -36,13 +36,32 @@
         android:restoreAnyVersion="true"
         android:supportsRtl="true" >
 
-        <service android:name="com.android.quickstep.TouchInteractionService"
-            android:exported="true" />
+        <service
+            android:name="com.android.quickstep.TouchInteractionService"
+            android:permission="android.permission.STATUS_BAR_SERVICE" >
+            <intent-filter>
+                <action android:name="android.intent.action.QUICKSTEP_SERVICE" />
+            </intent-filter>
+        </service>
 
         <!-- STOPSHIP: Change exported to false once all the integration is complete.
         It is set to true so that the activity can be started from command line -->
         <activity android:name="com.android.quickstep.RecentsActivity"
-            android:exported="true" />
+            android:exported="true"
+            android:excludeFromRecents="true" />
+
+        <!-- Content provider to settings search -->
+        <provider
+            android:name="com.android.quickstep.LauncherSearchIndexablesProvider"
+            android:authorities="com.android.launcher3"
+            android:grantUriPermissions="true"
+            android:multiprocess="true"
+            android:permission="android.permission.READ_SEARCH_INDEXABLES"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.content.action.SEARCH_INDEXABLES_PROVIDER" />
+            </intent-filter>
+        </provider>
     </application>
 
 </manifest>

quickstep/res/layout/fallback_recents_activity.xml

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+     Copyright (C) 2018 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<com.android.quickstep.RecentsRootView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/drag_layer"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <com.android.quickstep.FallbackRecentsView
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        android:id="@+id/overview_panel"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:clipChildren="false"
+        android:clipToPadding="false"
+        android:theme="@style/HomeScreenElementTheme" />
+
+</com.android.quickstep.RecentsRootView>

quickstep/res/layout/overview_panel.xml

@@ -14,18 +14,14 @@
      See the License for the specific language governing permissions and
      limitations under the License.
 -->
-<com.android.quickstep.RecentsView
+<com.android.quickstep.views.LauncherRecentsView
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:theme="@style/HomeScreenElementTheme"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:clipChildren="false"
     android:clipToPadding="false"
-    android:alpha="0.0"
-    android:visibility="invisible" >
+    android:visibility="invisible"
+    android:focusableInTouchMode="true" >
 
-    <com.android.launcher3.uioverrides.WorkspaceCard
-        android:layout_width="match_parent"
-        android:layout_height="match_parent" />
-
-</com.android.quickstep.RecentsView>
+</com.android.quickstep.views.LauncherRecentsView>

quickstep/res/layout/task.xml

@@ -13,12 +13,12 @@
      See the License for the specific language governing permissions and
      limitations under the License.
 -->
-<com.android.quickstep.TaskView xmlns:android="http://schemas.android.com/apk/res/android"
+<com.android.quickstep.views.TaskView xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:elevation="4dp">
 
-    <com.android.quickstep.TaskThumbnailView
+    <com.android.quickstep.views.TaskThumbnailView
         android:id="@+id/snapshot"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
@@ -29,4 +29,4 @@
         android:layout_width="@dimen/task_thumbnail_icon_size"
         android:layout_height="@dimen/task_thumbnail_icon_size"
         android:layout_gravity="top|center_horizontal" />
-</com.android.quickstep.TaskView>
+</com.android.quickstep.views.TaskView>

quickstep/res/layout/task_menu.xml

@@ -14,7 +14,7 @@
      See the License for the specific language governing permissions and
      limitations under the License.
 -->
-<com.android.quickstep.TaskMenuView
+<com.android.quickstep.views.TaskMenuView
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="@dimen/bg_popup_item_width"
     android:layout_height="wrap_content"
@@ -33,4 +33,4 @@
             android:paddingTop="18dp"
             android:drawablePadding="8dp"
             android:gravity="center_horizontal"/>
-</com.android.quickstep.TaskMenuView>
+</com.android.quickstep.views.TaskMenuView>

quickstep/res/values/dimens.xml

@@ -16,8 +16,6 @@
 
 <resources>
 
-    <dimen name="options_menu_icon_size">24dp</dimen>
-
     <dimen name="task_thumbnail_top_margin">24dp</dimen>
     <dimen name="task_thumbnail_icon_size">48dp</dimen>
     <dimen name="task_menu_background_radius">12dp</dimen>
@@ -25,19 +23,17 @@
     <dimen name="task_fade_length">20dp</dimen>
     <dimen name="recents_page_spacing">10dp</dimen>
 
+    <!-- The speed in dp/s at which the user needs to be scrolling in recents such that we start
+             loading full resolution screenshots. -->
+    <dimen name="recents_fast_fling_velocity">600dp</dimen>
 
     <dimen name="quickstep_fling_threshold_velocity">500dp</dimen>
     <dimen name="quickstep_fling_min_velocity">250dp</dimen>
 
-    <dimen name="workspace_overview_offset_x">-24dp</dimen>
-
-    <!-- TODO: This can be calculated using other resource values -->
-    <dimen name="all_apps_search_box_full_height">90dp</dimen>
-
     <!-- Launcher app transition -->
     <dimen name="content_trans_y">25dp</dimen>
     <dimen name="workspace_trans_y">80dp</dimen>
-    <dimen name="recents_adjacent_trans_x">120dp</dimen>
+    <dimen name="recents_adjacent_trans_x">140dp</dimen>
     <dimen name="recents_adjacent_trans_y">80dp</dimen>
     <fraction name="recents_adjacent_scale">150%</fraction>
 </resources>

quickstep/res/values/override.xml

@@ -16,5 +16,7 @@
 
 <resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
   <string name="app_transition_manager_class" translatable="false">com.android.launcher3.LauncherAppTransitionManagerImpl</string>
+
+  <string name="instant_app_resolver_class" translatable="false">com.android.quickstep.InstantAppResolverImpl</string>
 </resources>
 

quickstep/res/xml/indexable_launcher_prefs.xml

@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2018 Google Inc.
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <SwitchPreference
+        android:key="pref_add_icon_to_home"
+        android:title="@string/auto_add_shortcuts_label"
+        android:summary="@string/auto_add_shortcuts_description"
+        android:defaultValue="true"
+        />
+
+    <ListPreference
+        android:key="pref_override_icon_shape"
+        android:title="@string/icon_shape_override_label"
+        android:summary="@string/icon_shape_override_label_location"
+        android:entries="@array/icon_shape_override_paths_names"
+        android:entryValues="@array/icon_shape_override_paths_values"
+        android:defaultValue=""
+        android:persistent="false" />
+
+</PreferenceScreen>

quickstep/src/com/android/launcher3/LauncherAnimationRunner.java

@@ -15,27 +15,92 @@
  */
 package com.android.launcher3;
 
+import static com.android.systemui.shared.recents.utilities.Utilities
+        .postAtFrontOfQueueAsynchronously;
+
+import android.animation.Animator;
+import android.animation.AnimatorListenerAdapter;
 import android.animation.AnimatorSet;
+import android.annotation.TargetApi;
+import android.os.Build;
+import android.os.Handler;
+import android.support.annotation.BinderThread;
+import android.support.annotation.UiThread;
 
 import com.android.systemui.shared.system.RemoteAnimationRunnerCompat;
+import com.android.systemui.shared.system.RemoteAnimationTargetCompat;
 
-import static com.android.systemui.shared.recents.utilities.Utilities.postAtFrontOfQueueAsynchronously;
+@TargetApi(Build.VERSION_CODES.P)
+public abstract class LauncherAnimationRunner extends AnimatorListenerAdapter
+        implements RemoteAnimationRunnerCompat {
 
-public abstract class LauncherAnimationRunner implements RemoteAnimationRunnerCompat {
+    private static final int REFRESH_RATE_MS = 16;
 
-    AnimatorSet mAnimator;
-    private Launcher mLauncher;
+    private final Handler mHandler;
 
-    LauncherAnimationRunner(Launcher launcher) {
-        mLauncher = launcher;
+    private Runnable mSysFinishRunnable;
+
+    private AnimatorSet mAnimator;
+
+    public LauncherAnimationRunner(Handler handler) {
+        mHandler = handler;
     }
 
+    @BinderThread
+    @Override
+    public void onAnimationStart(RemoteAnimationTargetCompat[] targetCompats, Runnable runnable) {
+        postAtFrontOfQueueAsynchronously(mHandler, () -> {
+            // Finish any previous animation
+            finishSystemAnimation();
+
+            mSysFinishRunnable = runnable;
+            mAnimator = getAnimator(targetCompats);
+            if (mAnimator == null) {
+                finishSystemAnimation();
+                return;
+            }
+            mAnimator.addListener(this);
+            mAnimator.start();
+            // Because t=0 has the app icon in its original spot, we can skip the
+            // first frame and have the same movement one frame earlier.
+            mAnimator.setCurrentPlayTime(REFRESH_RATE_MS);
+
+        });
+    }
+
+
+    @UiThread
+    public abstract AnimatorSet getAnimator(RemoteAnimationTargetCompat[] targetCompats);
+
+    @UiThread
+    @Override
+    public void onAnimationEnd(Animator animation) {
+        if (animation == mAnimator) {
+            mAnimator = null;
+            finishSystemAnimation();
+        }
+    }
+
+    /**
+     * Called by the system
+     */
+    @BinderThread
     @Override
     public void onAnimationCancelled() {
-        postAtFrontOfQueueAsynchronously(mLauncher.getWindow().getDecorView().getHandler(), () -> {
+        postAtFrontOfQueueAsynchronously(mHandler, () -> {
             if (mAnimator != null) {
-                mAnimator.cancel();
+                mAnimator.removeListener(this);
+                mAnimator.end();
+                mAnimator = null;
             }
         });
     }
+
+    @UiThread
+    private void finishSystemAnimation() {
+        if (mSysFinishRunnable != null) {
+            mSysFinishRunnable.run();
+            mSysFinishRunnable = null;
+        }
+    }
 }

quickstep/src/com/android/launcher3/LauncherAppTransitionManagerImpl.java

@@ -16,11 +16,11 @@
 
 package com.android.launcher3;
 
-import static com.android.launcher3.LauncherAnimUtils.DRAWABLE_ALPHA;
+import static com.android.launcher3.LauncherAnimUtils.SCALE_PROPERTY;
+import static com.android.launcher3.LauncherState.NORMAL;
 import static com.android.launcher3.allapps.AllAppsTransitionController.ALL_APPS_PROGRESS;
 import static com.android.systemui.shared.recents.utilities.Utilities.getNextFrameNumber;
 import static com.android.systemui.shared.recents.utilities.Utilities.getSurface;
-import static com.android.systemui.shared.recents.utilities.Utilities.postAtFrontOfQueueAsynchronously;
 import static com.android.systemui.shared.system.RemoteAnimationTargetCompat.MODE_CLOSING;
 import static com.android.systemui.shared.system.RemoteAnimationTargetCompat.MODE_OPENING;
 
@@ -31,13 +31,16 @@ import android.animation.ObjectAnimator;
 import android.animation.ValueAnimator;
 import android.annotation.TargetApi;
 import android.app.ActivityOptions;
+import android.content.ComponentName;
 import android.content.Context;
 import android.content.pm.PackageManager;
 import android.content.res.Resources;
 import android.graphics.Matrix;
 import android.graphics.Rect;
+import android.graphics.drawable.Drawable;
 import android.os.Build;
 import android.os.Handler;
+import android.os.Looper;
 import android.util.Log;
 import android.view.Surface;
 import android.view.View;
@@ -47,14 +50,18 @@ import android.view.animation.Interpolator;
 import com.android.launcher3.DeviceProfile.OnDeviceProfileChangeListener;
 import com.android.launcher3.InsettableFrameLayout.LayoutParams;
 import com.android.launcher3.allapps.AllAppsTransitionController;
+import com.android.launcher3.anim.AnimatorPlaybackController;
 import com.android.launcher3.anim.Interpolators;
 import com.android.launcher3.anim.PropertyListBuilder;
 import com.android.launcher3.dragndrop.DragLayer;
 import com.android.launcher3.graphics.DrawableFactory;
+import com.android.launcher3.shortcuts.DeepShortcutTextView;
+import com.android.launcher3.shortcuts.DeepShortcutView;
 import com.android.quickstep.RecentsAnimationInterpolator;
 import com.android.quickstep.RecentsAnimationInterpolator.TaskWindowBounds;
-import com.android.quickstep.RecentsView;
-import com.android.quickstep.TaskView;
+import com.android.quickstep.views.RecentsView;
+import com.android.systemui.shared.recents.model.Task;
+import com.android.quickstep.views.TaskView;
 import com.android.systemui.shared.system.ActivityCompat;
 import com.android.systemui.shared.system.ActivityOptionsCompat;
 import com.android.systemui.shared.system.RemoteAnimationAdapterCompat;
@@ -73,13 +80,16 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
         implements OnDeviceProfileChangeListener {
 
     private static final String TAG = "LauncherTransition";
-    private static final int REFRESH_RATE_MS = 16;
+    private static final int STATUS_BAR_TRANSITION_DURATION = 120;
 
     private static final String CONTROL_REMOTE_APP_TRANSITION_PERMISSION =
             "android.permission.CONTROL_REMOTE_APP_TRANSITION_ANIMATIONS";
 
+    private static final int APP_LAUNCH_DURATION = 500;
+    // Use a shorter duration for x or y translation to create a curve effect
+    private static final int APP_LAUNCH_CURVED_DURATION = 233;
     private static final int RECENTS_LAUNCH_DURATION = 336;
-    private static final int LAUNCHER_RESUME_START_DELAY = 150;
+    private static final int LAUNCHER_RESUME_START_DELAY = 100;
     private static final int CLOSING_TRANSITION_DURATION_MS = 350;
 
     // Progress = 0: All apps is fully pulled up, Progress = 1: All apps is fully pulled down.
@@ -88,7 +98,9 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
 
     private final DragLayer mDragLayer;
     private final Launcher mLauncher;
-    private DeviceProfile mDeviceProfile;
+
+    private final Handler mHandler;
+    private final boolean mIsRtl;
 
     private final float mContentTransY;
     private final float mWorkspaceTransY;
@@ -96,17 +108,23 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
     private final float mRecentsTransY;
     private final float mRecentsScale;
 
+    private DeviceProfile mDeviceProfile;
     private View mFloatingView;
-    private boolean mIsRtl;
 
-    private LauncherTransitionAnimator mCurrentAnimator;
+    private final AnimatorListenerAdapter mReapplyStateListener = new AnimatorListenerAdapter() {
+        @Override
+        public void onAnimationEnd(Animator animation) {
+            mLauncher.getStateManager().reapplyState();
+        }
+    };
 
     public LauncherAppTransitionManagerImpl(Context context) {
         mLauncher = Launcher.getLauncher(context);
         mDragLayer = mLauncher.getDragLayer();
+        mHandler = new Handler(Looper.getMainLooper());
+        mIsRtl = Utilities.isRtl(mLauncher.getResources());
         mDeviceProfile = mLauncher.getDeviceProfile();
 
-        mIsRtl = Utilities.isRtl(mLauncher.getResources());
 
         Resources res = mLauncher.getResources();
         mContentTransY = res.getDimensionPixelSize(R.dimen.content_trans_y);
@@ -124,26 +142,6 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
         mDeviceProfile = dp;
     }
 
-    private void setCurrentAnimator(LauncherTransitionAnimator animator) {
-        if (isAnimating()) {
-            mCurrentAnimator.cancel();
-        }
-        mCurrentAnimator = animator;
-    }
-
-    @Override
-    public void finishLauncherAnimation() {
-        if (isAnimating()) {
-            mCurrentAnimator.finishLauncherAnimation();
-        }
-        mCurrentAnimator = null;
-    }
-
-    @Override
-    public boolean isAnimating() {
-        return mCurrentAnimator != null && mCurrentAnimator.isRunning();
-    }
-
     /**
      * @return ActivityOptions with remote animations that controls how the window of the opening
      *         targets are displayed.
@@ -152,57 +150,28 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
     public ActivityOptions getActivityLaunchOptions(Launcher launcher, View v) {
         if (hasControlRemoteAppTransitionPermission()) {
             try {
-                RemoteAnimationRunnerCompat runner = new LauncherAnimationRunner(mLauncher) {
+                RemoteAnimationRunnerCompat runner = new LauncherAnimationRunner(mHandler) {
+
                     @Override
-                    public void onAnimationStart(RemoteAnimationTargetCompat[] targets,
-                                                 Runnable finishedCallback) {
-                        // Post at front of queue ignoring sync barriers to make sure it gets
-                        // processed before the next frame.
-                        postAtFrontOfQueueAsynchronously(v.getHandler(), () -> {
-                            final boolean removeTrackingView;
-                            LauncherTransitionAnimator animator =
-                                    composeRecentsLaunchAnimator(v, targets);
-                            if (animator != null) {
-                                // We are animating the task view directly, do not remove it after
-                                removeTrackingView = false;
-                            } else {
-                                animator = composeAppLaunchAnimator(v, targets);
-                                // A new floating view is created for the animation, remove it after
-                                removeTrackingView = true;
-                            }
-
-                            setCurrentAnimator(animator);
-                            mAnimator = animator.getAnimatorSet();
-                            mAnimator.addListener(new AnimatorListenerAdapter() {
-                                @Override
-                                public void onAnimationEnd(Animator animation) {
-                                    // Reset launcher to normal state
-                                    v.setVisibility(View.VISIBLE);
-                                    if (removeTrackingView) {
-                                        ((ViewGroup) mDragLayer.getParent()).removeView(
-                                                mFloatingView);
-                                    }
-
-                                    mDragLayer.setAlpha(1f);
-                                    mDragLayer.setTranslationY(0f);
-
-                                    View appsView = mLauncher.getAppsView();
-                                    appsView.setAlpha(1f);
-                                    appsView.setTranslationY(0f);
-
-                                    finishedCallback.run();
-                                }
-                            });
-                            mAnimator.start();
-                            // Because t=0 has the app icon in its original spot, we can skip the
-                            // first frame and have the same movement one frame earlier.
-                            mAnimator.setCurrentPlayTime(REFRESH_RATE_MS);
-                        });
+                    public AnimatorSet getAnimator(RemoteAnimationTargetCompat[] targetCompats) {
+                        Animator[] anims = composeRecentsLaunchAnimator(v, targetCompats);
+                        AnimatorSet anim = new AnimatorSet();
+                        if (anims != null) {
+                            anim.playTogether(anims);
+                        } else {
+                            anim.play(getLauncherAnimators(v, targetCompats));
+                            anim.play(getWindowAnimators(v, targetCompats));
+                        }
+                        mLauncher.getStateManager().setCurrentAnimation(anim);
+                        return anim;
                     }
                 };
 
-                return ActivityOptionsCompat.makeRemoteAnimation(
-                        new RemoteAnimationAdapterCompat(runner, 500, 380));
+                int duration = findTaskViewToLaunch(launcher, v, null) != null
+                        ? RECENTS_LAUNCH_DURATION : APP_LAUNCH_DURATION;
+                int statusBarTransitionDelay = duration - STATUS_BAR_TRANSITION_DURATION;
+                return ActivityOptionsCompat.makeRemoteAnimation(new RemoteAnimationAdapterCompat(
+                        runner, duration, statusBarTransitionDelay));
             } catch (NoClassDefFoundError e) {
                 // Gracefully fall back to default launch options if the user's platform doesn't
                 // have the latest changes.
@@ -212,19 +181,44 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
     }
 
     /**
-     * Composes the animations for a launch from the recents list if possible.
+     * Try to find a TaskView that corresponds with the component of the launched view.
+     *
+     * If this method returns a non-null TaskView, it will be used in composeRecentsLaunchAnimation.
+     * Otherwise, we will assume we are using a normal app transition, but it's possible that the
+     * opening remote target (which we don't get until onAnimationStart) will resolve to a TaskView.
      */
-    private LauncherTransitionAnimator composeRecentsLaunchAnimator(View v,
-            RemoteAnimationTargetCompat[] targets) {
-        // Ensure recents is actually visible
-        if (!mLauncher.isInState(LauncherState.OVERVIEW)) {
-            return null;
+    private TaskView findTaskViewToLaunch(
+            BaseDraggingActivity activity, View v, RemoteAnimationTargetCompat[] targets) {
+        if (v instanceof TaskView) {
+            return (TaskView) v;
+        }
+        RecentsView recentsView = activity.getOverviewPanel();
+
+        // It's possible that the launched view can still be resolved to a visible task view, check
+        // the task id of the opening task and see if we can find a match.
+        if (v.getTag() instanceof ItemInfo) {
+            ItemInfo itemInfo = (ItemInfo) v.getTag();
+            ComponentName componentName = itemInfo.getTargetComponent();
+            if (componentName != null) {
+                for (int i = 0; i < recentsView.getChildCount(); i++) {
+                    TaskView taskView = (TaskView) recentsView.getPageAt(i);
+                    if (recentsView.isTaskViewVisible(taskView)) {
+                        Task task = taskView.getTask();
+                        if (componentName.equals(task.key.getComponent())) {
+                            return taskView;
+                        }
+                    }
+                }
+            }
         }
 
+        if (targets == null) {
+            return null;
+        }
         // Resolve the opening task id
         int openingTaskId = -1;
         for (RemoteAnimationTargetCompat target : targets) {
-            if (target.mode == RemoteAnimationTargetCompat.MODE_OPENING) {
+            if (target.mode == MODE_OPENING) {
                 openingTaskId = target.taskId;
                 break;
             }
@@ -237,15 +231,56 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
 
         // If the opening task id is not currently visible in overview, then fall back to normal app
         // icon launch animation
-        RecentsView recentsView = mLauncher.getOverviewPanel();
         TaskView taskView = recentsView.getTaskView(openingTaskId);
         if (taskView == null || !recentsView.isTaskViewVisible(taskView)) {
             return null;
         }
+        return taskView;
+    }
+
+    /**
+     * Composes the animations for a launch from the recents list if possible.
+     */
+    private Animator[] composeRecentsLaunchAnimator(View v,
+            RemoteAnimationTargetCompat[] targets) {
+        // Ensure recents is actually visible
+        if (!mLauncher.getStateManager().getState().overviewUi) {
+            return null;
+        }
+
+        RecentsView recentsView = mLauncher.getOverviewPanel();
+        boolean launcherClosing = launcherIsATargetWithMode(targets, MODE_CLOSING);
+        boolean skipLauncherChanges = !launcherClosing;
+
+        TaskView taskView = findTaskViewToLaunch(mLauncher, v, targets);
+        if (taskView == null) {
+            return null;
+        }
 
         // Found a visible recents task that matches the opening app, lets launch the app from there
-        return new LauncherTransitionAnimator(getRecentsLauncherAnimator(recentsView, taskView),
-                getRecentsWindowAnimator(taskView, targets));
+        Animator launcherAnim;
+        final AnimatorListenerAdapter windowAnimEndListener;
+        if (launcherClosing) {
+            launcherAnim = getRecentsLauncherAnimator(recentsView, taskView);
+            // Make sure recents gets fixed up by resetting task alphas and scales, etc.
+            windowAnimEndListener = mReapplyStateListener;
+        } else {
+            AnimatorPlaybackController controller =
+                    mLauncher.getStateManager()
+                            .createAnimationToNewWorkspace(NORMAL, RECENTS_LAUNCH_DURATION);
+            controller.dispatchOnStart();
+            launcherAnim = controller.getAnimationPlayer().setDuration(RECENTS_LAUNCH_DURATION);
+            windowAnimEndListener = new AnimatorListenerAdapter() {
+                @Override
+                public void onAnimationEnd(Animator animation) {
+                    mLauncher.getStateManager().goToState(NORMAL, false);
+                }
+            };
+        }
+
+        Animator windowAnim = getRecentsWindowAnimator(taskView, skipLauncherChanges, targets);
+        windowAnim.addListener(windowAnimEndListener);
+        return new Animator[] {launcherAnim, windowAnim};
     }
 
     /**
@@ -260,15 +295,16 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
         int launchedTaskIndex = recentsView.indexOfChild(v);
         int centerTaskIndex = recentsView.getCurrentPage();
         boolean launchingCenterTask = launchedTaskIndex == centerTaskIndex;
+        boolean isRtl = recentsView.isRtl();
         if (launchingCenterTask) {
-            if (launchedTaskIndex - 1 >= recentsView.getFirstTaskIndex()) {
+            if (launchedTaskIndex - 1 >= 0) {
                 TaskView adjacentPage1 = (TaskView) recentsView.getPageAt(launchedTaskIndex - 1);
                 ObjectAnimator adjacentTask1ScaleAndTranslate =
                         LauncherAnimUtils.ofPropertyValuesHolder(adjacentPage1,
                                 new PropertyListBuilder()
                                         .scale(adjacentPage1.getScaleX() * mRecentsScale)
                                         .translationY(mRecentsTransY)
-                                        .translationX(mIsRtl ? mRecentsTransX : -mRecentsTransX)
+                                        .translationX(isRtl ? mRecentsTransX : -mRecentsTransX)
                                         .build());
                 launcherAnimator.play(adjacentTask1ScaleAndTranslate);
             }
@@ -279,33 +315,31 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
                                 new PropertyListBuilder()
                                         .scale(adjacentTask2.getScaleX() * mRecentsScale)
                                         .translationY(mRecentsTransY)
-                                        .translationX(mIsRtl ? -mRecentsTransX : mRecentsTransX)
+                                        .translationX(isRtl ? -mRecentsTransX : mRecentsTransX)
                                         .build());
                 launcherAnimator.play(adjacentTask2ScaleAndTranslate);
             }
-        } else if (centerTaskIndex >= recentsView.getFirstTaskIndex()) {
+        } else {
             // We are launching an adjacent task, so parallax the center and other adjacent task.
             TaskView centerTask = (TaskView) recentsView.getPageAt(centerTaskIndex);
-            float translationX = Math.abs(v.getTranslationX());
-            ObjectAnimator centerTaskParallaxToRight =
+            float translationX = mRecentsTransX / 2;
+            ObjectAnimator centerTaskParallaxOffscreen =
                     LauncherAnimUtils.ofPropertyValuesHolder(centerTask,
                             new PropertyListBuilder()
-                                    .scale(v.getScaleX())
-                                    .translationX(mIsRtl ? -translationX : translationX)
+                                    .translationX(isRtl ? -translationX : translationX)
                                     .build());
-            launcherAnimator.play(centerTaskParallaxToRight);
+            launcherAnimator.play(centerTaskParallaxOffscreen);
             int otherAdjacentTaskIndex = centerTaskIndex + (centerTaskIndex - launchedTaskIndex);
-            if (otherAdjacentTaskIndex >= recentsView.getFirstTaskIndex()
+            if (otherAdjacentTaskIndex >= 0
                     && otherAdjacentTaskIndex < recentsView.getPageCount()) {
                 TaskView otherAdjacentTask = (TaskView) recentsView.getPageAt(
                         otherAdjacentTaskIndex);
-                ObjectAnimator otherAdjacentTaskParallaxToRight =
+                ObjectAnimator otherAdjacentTaskParallaxOffscreen =
                         LauncherAnimUtils.ofPropertyValuesHolder(otherAdjacentTask,
                                 new PropertyListBuilder()
-                                        .translationX(otherAdjacentTask.getTranslationX()
-                                                + (mIsRtl ? -translationX : translationX))
+                                        .translationX(isRtl ? -translationX : translationX)
                                         .build());
-                launcherAnimator.play(otherAdjacentTaskParallaxToRight);
+                launcherAnimator.play(otherAdjacentTaskParallaxOffscreen);
             }
         }
 
@@ -314,7 +348,7 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
         launcherAnimator.play(allAppsSlideOut);
 
         Workspace workspace = mLauncher.getWorkspace();
-        float[] workspaceScaleAndTranslation = LauncherState.NORMAL
+        float[] workspaceScaleAndTranslation = NORMAL
                 .getWorkspaceScaleAndTranslation(mLauncher);
         Animator recenterWorkspace = LauncherAnimUtils.ofPropertyValuesHolder(
                 workspace, new PropertyListBuilder()
@@ -324,9 +358,6 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
         launcherAnimator.play(recenterWorkspace);
         CellLayout currentWorkspacePage = (CellLayout) workspace.getPageAt(
                 workspace.getCurrentPage());
-        Animator hideWorkspaceScrim = ObjectAnimator.ofInt(
-                currentWorkspacePage.getScrimBackground(), DRAWABLE_ALPHA, 0);
-        launcherAnimator.play(hideWorkspaceScrim);
 
         launcherAnimator.setInterpolator(Interpolators.TOUCH_RESPONSE_INTERPOLATOR);
         launcherAnimator.setDuration(RECENTS_LAUNCH_DURATION);
@@ -337,7 +368,7 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
      * @return Animator that controls the window of the opening targets for the recents launch
      * animation.
      */
-    private ValueAnimator getRecentsWindowAnimator(TaskView v,
+    private ValueAnimator getRecentsWindowAnimator(TaskView v, boolean skipLauncherChanges,
             RemoteAnimationTargetCompat[] targets) {
         Rect taskViewBounds = new Rect();
         mDragLayer.getDescendantRectRelativeToSelf(v, taskViewBounds);
@@ -373,22 +404,23 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
                 final float percent = animation.getAnimatedFraction();
                 TaskWindowBounds tw = recentsInterpolator.interpolate(percent);
 
-                v.setScaleX(tw.taskScale);
-                v.setScaleY(tw.taskScale);
-                v.setTranslationX(tw.taskX);
-                v.setTranslationY(tw.taskY);
-                // Defer fading out the view until after the app window gets faded in
-                v.setAlpha(getValue(1f, 0f, 75, 75,
-                        appAnimator.getDuration() * percent, Interpolators.LINEAR));
+                if (!skipLauncherChanges) {
+                    v.setScaleX(tw.taskScale);
+                    v.setScaleY(tw.taskScale);
+                    v.setTranslationX(tw.taskX);
+                    v.setTranslationY(tw.taskY);
+                    // Defer fading out the view until after the app window gets faded in
+                    v.setAlpha(getValue(1f, 0f, 75, 75,
+                            appAnimator.getDuration() * percent, Interpolators.LINEAR));
+                }
 
                 matrix.setScale(tw.winScale, tw.winScale);
                 matrix.postTranslate(tw.winX, tw.winY);
                 crop.set(tw.winCrop);
 
                 // Fade in the app window.
-                float alphaDelay = 0;
                 float alphaDuration = 75;
-                float alpha = getValue(0f, 1f, alphaDelay, alphaDuration,
+                float alpha = getValue(0f, 1f, 0, alphaDuration,
                         appAnimator.getDuration() * percent, Interpolators.LINEAR);
 
                 TransactionCompat t = new TransactionCompat();
@@ -401,7 +433,10 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
                         matrix.postTranslate(target.position.x, target.position.y);
                         t.setMatrix(target.leash, matrix);
                         t.setWindowCrop(target.leash, crop);
-                        t.deferTransactionUntil(target.leash, surface, getNextFrameNumber(surface));
+
+                        if (!skipLauncherChanges) {
+                            t.deferTransactionUntil(target.leash, surface, frameNumber);
+                        }
                     }
                     if (isFirstFrame) {
                         t.show(target.leash);
@@ -413,25 +448,9 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
                 isFirstFrame = false;
             }
         });
-        appAnimator.addListener(new AnimatorListenerAdapter() {
-            @Override
-            public void onAnimationEnd(Animator animation) {
-                // Make sure recents gets fixed up by resetting task alphas and scales, etc.
-                mLauncher.getStateManager().reapplyState();
-            }
-        });
         return appAnimator;
     }
 
-    /**
-     * Composes the animations for a launch from an app icon.
-     */
-    private LauncherTransitionAnimator composeAppLaunchAnimator(View v,
-            RemoteAnimationTargetCompat[] targets) {
-        return new LauncherTransitionAnimator(getLauncherAnimators(v, targets),
-                getWindowAnimators(v, targets));
-    }
-
     /**
      * @return Animators that control the movements of the Launcher and icon of the opening target.
      */
@@ -462,7 +481,9 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
 
         if (mLauncher.isInState(LauncherState.ALL_APPS) && !mDeviceProfile.isVerticalBarLayout()) {
             // All Apps in portrait mode is full screen, so we only animate AllAppsContainerView.
-            View appsView = mLauncher.getAppsView();
+            final View appsView = mLauncher.getAppsView();
+            final float startAlpha = appsView.getAlpha();
+            final float startY = appsView.getTranslationY();
             appsView.setAlpha(alphas[0]);
             appsView.setTranslationY(trans[0]);
 
@@ -475,6 +496,14 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
 
             launcherAnimator.play(alpha);
             launcherAnimator.play(transY);
+
+            launcherAnimator.addListener(new AnimatorListenerAdapter() {
+                @Override
+                public void onAnimationEnd(Animator animation) {
+                    appsView.setAlpha(startAlpha);
+                    appsView.setTranslationY(startY);
+                }
+            });
         } else {
             mDragLayer.setAlpha(alphas[0]);
             mDragLayer.setTranslationY(trans[0]);
@@ -489,6 +518,13 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
 
             launcherAnimator.play(dragLayerAlpha);
             launcherAnimator.play(dragLayerTransY);
+            launcherAnimator.addListener(new AnimatorListenerAdapter() {
+                @Override
+                public void onAnimationEnd(Animator animation) {
+                    mDragLayer.setAlpha(1);
+                    mDragLayer.setTranslationY(0);
+                }
+            });
         }
         return launcherAnimator;
     }
@@ -497,33 +533,56 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
      * @return Animator that controls the icon used to launch the target.
      */
     private AnimatorSet getIconAnimator(View v) {
-        boolean isBubbleTextView = v instanceof BubbleTextView;
+        final boolean isBubbleTextView = v instanceof BubbleTextView;
         mFloatingView = new View(mLauncher);
         if (isBubbleTextView && v.getTag() instanceof ItemInfoWithIcon ) {
             // Create a copy of the app icon
-            ItemInfoWithIcon info = (ItemInfoWithIcon) v.getTag();
-            FastBitmapDrawable d = DrawableFactory.get(mLauncher).newIcon(info);
-            d.setIsDisabled(info.isDisabled());
-            mFloatingView.setBackground(d);
+            mFloatingView.setBackground(
+                    DrawableFactory.get(mLauncher).newIcon((ItemInfoWithIcon) v.getTag()));
         }
 
         // Position the floating view exactly on top of the original
         Rect rect = new Rect();
-        mDragLayer.getDescendantRectRelativeToSelf(v, rect);
-        int viewLocationStart = mIsRtl
-                ? mDeviceProfile.widthPx - rect.right
-                : rect.left;
+        final boolean fromDeepShortcutView = v.getParent() instanceof DeepShortcutView;
+        if (fromDeepShortcutView) {
+            // Deep shortcut views have their icon drawn in a separate view.
+            DeepShortcutView view = (DeepShortcutView) v.getParent();
+            mDragLayer.getDescendantRectRelativeToSelf(view.getIconView(), rect);
+        } else {
+            mDragLayer.getDescendantRectRelativeToSelf(v, rect);
+        }
+        int viewLocationLeft = rect.left;
         int viewLocationTop = rect.top;
 
-        if (isBubbleTextView) {
-            ((BubbleTextView) v).getIconBounds(rect);
+        float startScale = 1f;
+        if (isBubbleTextView && !fromDeepShortcutView) {
+            BubbleTextView btv = (BubbleTextView) v;
+            btv.getIconBounds(rect);
+            Drawable dr = btv.getIcon();
+            if (dr instanceof FastBitmapDrawable) {
+                startScale = ((FastBitmapDrawable) dr).getAnimatedScale();
+            }
+        } else {
+            rect.set(0, 0, rect.width(), rect.height());
         }
+        viewLocationLeft += rect.left;
+        viewLocationTop += rect.top;
+        int viewLocationStart = mIsRtl
+                ? mDeviceProfile.widthPx - rect.right
+                : viewLocationLeft;
         LayoutParams lp = new LayoutParams(rect.width(), rect.height());
         lp.ignoreInsets = true;
-        lp.setMarginStart(viewLocationStart + rect.left);
-        lp.topMargin = viewLocationTop + rect.top;
+        lp.setMarginStart(viewLocationStart);
+        lp.topMargin = viewLocationTop;
         mFloatingView.setLayoutParams(lp);
 
+        // Set the properties here already to make sure they'are available when running the first
+        // animation frame.
+        mFloatingView.setLeft(viewLocationLeft);
+        mFloatingView.setTop(viewLocationTop);
+        mFloatingView.setRight(viewLocationLeft + rect.width());
+        mFloatingView.setBottom(viewLocationTop + rect.height());
+
         // Swap the two views in place.
         ((ViewGroup) mDragLayer.getParent()).addView(mFloatingView);
         v.setVisibility(View.INVISIBLE);
@@ -544,8 +603,8 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
 
         // Adjust the duration to change the "curve" of the app icon to the center.
         boolean isBelowCenterY = lp.topMargin < centerY;
-        x.setDuration(isBelowCenterY ? 500 : 233);
-        y.setDuration(isBelowCenterY ? 233 : 500);
+        x.setDuration(isBelowCenterY ? APP_LAUNCH_DURATION : APP_LAUNCH_CURVED_DURATION);
+        y.setDuration(isBelowCenterY ? APP_LAUNCH_CURVED_DURATION : APP_LAUNCH_DURATION);
         x.setInterpolator(Interpolators.AGGRESSIVE_EASE);
         y.setInterpolator(Interpolators.AGGRESSIVE_EASE);
         appIconAnimatorSet.play(x);
@@ -556,14 +615,10 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
         float maxScaleX = mDeviceProfile.widthPx / (float) rect.width();
         float maxScaleY = mDeviceProfile.heightPx / (float) rect.height();
         float scale = Math.max(maxScaleX, maxScaleY);
-        ObjectAnimator sX = ObjectAnimator.ofFloat(mFloatingView, View.SCALE_X, 1f, scale);
-        ObjectAnimator sY = ObjectAnimator.ofFloat(mFloatingView, View.SCALE_Y, 1f, scale);
-        sX.setDuration(500);
-        sY.setDuration(500);
-        sX.setInterpolator(Interpolators.EXAGGERATED_EASE);
-        sY.setInterpolator(Interpolators.EXAGGERATED_EASE);
-        appIconAnimatorSet.play(sX);
-        appIconAnimatorSet.play(sY);
+        ObjectAnimator scaleAnim = ObjectAnimator
+                .ofFloat(mFloatingView, SCALE_PROPERTY, startScale, scale);
+        scaleAnim.setDuration(APP_LAUNCH_DURATION).setInterpolator(Interpolators.EXAGGERATED_EASE);
+        appIconAnimatorSet.play(scaleAnim);
 
         // Fade out the app icon.
         ObjectAnimator alpha = ObjectAnimator.ofFloat(mFloatingView, View.ALPHA, 1f, 0f);
@@ -572,6 +627,14 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
         alpha.setInterpolator(Interpolators.LINEAR);
         appIconAnimatorSet.play(alpha);
 
+        appIconAnimatorSet.addListener(new AnimatorListenerAdapter() {
+            @Override
+            public void onAnimationEnd(Animator animation) {
+                // Reset launcher to normal state
+                v.setVisibility(View.VISIBLE);
+                ((ViewGroup) mDragLayer.getParent()).removeView(mFloatingView);
+            }
+        });
         return appIconAnimatorSet;
     }
 
@@ -580,7 +643,11 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
      */
     private ValueAnimator getWindowAnimators(View v, RemoteAnimationTargetCompat[] targets) {
         Rect bounds = new Rect();
-        if (v instanceof BubbleTextView) {
+        if (v.getParent() instanceof DeepShortcutView) {
+            // Deep shortcut views have their icon drawn in a separate view.
+            DeepShortcutView view = (DeepShortcutView) v.getParent();
+            mDragLayer.getDescendantRectRelativeToSelf(view.getIconView(), bounds);
+        } else if (v instanceof BubbleTextView) {
             ((BubbleTextView) v).getIconBounds(bounds);
         } else {
             mDragLayer.getDescendantRectRelativeToSelf(v, bounds);
@@ -591,7 +658,7 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
         Matrix matrix = new Matrix();
 
         ValueAnimator appAnimator = ValueAnimator.ofFloat(0, 1);
-        appAnimator.setDuration(500);
+        appAnimator.setDuration(APP_LAUNCH_DURATION);
         appAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
             boolean isFirstFrame = true;
 
@@ -631,9 +698,8 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
                 matrix.postTranslate(transX0, transY0);
 
                 // Fade in the app window.
-                float alphaDelay = 0;
                 float alphaDuration = 60;
-                float alpha = getValue(0f, 1f, alphaDelay, alphaDuration,
+                float alpha = getValue(0f, 1f, 0, alphaDuration,
                         appAnimator.getDuration() * percent, Interpolators.LINEAR);
 
                 // Animate the window crop so that it starts off as a square, and then reveals
@@ -678,6 +744,7 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
             try {
                 RemoteAnimationDefinitionCompat definition = new RemoteAnimationDefinitionCompat();
                 definition.addRemoteAnimation(WindowManagerWrapper.TRANSIT_WALLPAPER_OPEN,
+                        WindowManagerWrapper.ACTIVITY_TYPE_STANDARD,
                         new RemoteAnimationAdapterCompat(getWallpaperOpenRunner(),
                                 CLOSING_TRANSITION_DURATION_MS, 0 /* statusBarTransitionDelay */));
 
@@ -705,40 +772,25 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
      *         ie. pressing home, swiping up from nav bar.
      */
     private RemoteAnimationRunnerCompat getWallpaperOpenRunner() {
-        return new LauncherAnimationRunner(mLauncher) {
+        return new LauncherAnimationRunner(mHandler) {
             @Override
-            public void onAnimationStart(RemoteAnimationTargetCompat[] targets,
-                                         Runnable finishedCallback) {
-                Handler handler = mLauncher.getWindow().getDecorView().getHandler();
-                postAtFrontOfQueueAsynchronously(handler, () -> {
-                    if ((Utilities.getPrefs(mLauncher)
-                            .getBoolean("pref_use_screenshot_for_swipe_up", false)
-                            && mLauncher.isInState(LauncherState.OVERVIEW))
-                            || !launcherIsATargetWithMode(targets, MODE_OPENING)) {
-                        // We use a separate transition for Overview mode. And we can skip the
-                        // animation in cases where Launcher is not in the set of opening targets.
-                        // This can happen when Launcher is already visible. ie. Closing a dialog.
-                        setCurrentAnimator(null);
-                        finishedCallback.run();
-                        return;
-                    }
+            public AnimatorSet getAnimator(RemoteAnimationTargetCompat[] targetCompats) {
+                if (mLauncher.getStateManager().getState().overviewUi) {
+                    // We use a separate transition for Overview mode.
+                    return null;
+                }
 
-                    LauncherTransitionAnimator animator = new LauncherTransitionAnimator(
-                            getLauncherResumeAnimation(), getClosingWindowAnimators(targets));
-                    setCurrentAnimator(animator);
-                    mAnimator = animator.getAnimatorSet();
-                    mAnimator.addListener(new AnimatorListenerAdapter() {
-                        @Override
-                        public void onAnimationEnd(Animator animation) {
-                            finishedCallback.run();
-                        }
-                    });
-                    mAnimator.start();
+                AnimatorSet anim = new AnimatorSet();
+                anim.play(getClosingWindowAnimators(targetCompats));
 
-                    // Because t=0 has the app icon in its original spot, we can skip the
-                    // first frame and have the same movement one frame earlier.
-                    mAnimator.setCurrentPlayTime(REFRESH_RATE_MS);
-                });
+                if (launcherIsATargetWithMode(targetCompats, MODE_OPENING)) {
+                    AnimatorSet contentAnimation = getLauncherResumeAnimation();
+                    anim.play(contentAnimation);
+
+                    // Only register the content animation for cancellation when state changes
+                    mLauncher.getStateManager().setCurrentAnimation(contentAnimation);
+                }
+                return anim;
             }
         };
     }
@@ -750,7 +802,7 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
         Matrix matrix = new Matrix();
         float height = mLauncher.getDeviceProfile().heightPx;
         float width = mLauncher.getDeviceProfile().widthPx;
-        float endX = (Utilities.isRtl(mLauncher.getResources()) ? -width : width) * 1.16f;
+        float endX = (mLauncher.<RecentsView>getOverviewPanel().isRtl() ? -width : width) * 1.16f;
 
         ValueAnimator closingAnimator = ValueAnimator.ofFloat(0, 1);
         closingAnimator.setDuration(CLOSING_TRANSITION_DURATION_MS);
@@ -809,12 +861,17 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
             return contentAnimator;
         } else {
             AnimatorSet workspaceAnimator = new AnimatorSet();
+
             mLauncher.getWorkspace().setTranslationY(mWorkspaceTransY);
-            mLauncher.getWorkspace().setAlpha(0f);
             workspaceAnimator.play(ObjectAnimator.ofFloat(mLauncher.getWorkspace(),
                     View.TRANSLATION_Y, mWorkspaceTransY, 0));
-            workspaceAnimator.play(ObjectAnimator.ofFloat(mLauncher.getWorkspace(), View.ALPHA,
-                    0, 1f));
+
+            View currentPage = ((CellLayout) mLauncher.getWorkspace()
+                    .getChildAt(mLauncher.getWorkspace().getCurrentPage()))
+                    .getShortcutsAndWidgets();
+            currentPage.setAlpha(0f);
+            workspaceAnimator.play(ObjectAnimator.ofFloat(currentPage, View.ALPHA, 0, 1f));
+
             workspaceAnimator.setStartDelay(LAUNCHER_RESUME_START_DELAY);
             workspaceAnimator.setDuration(333);
             workspaceAnimator.setInterpolator(Interpolators.FAST_OUT_SLOW_IN);
@@ -842,6 +899,8 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
             AnimatorSet resumeLauncherAnimation = new AnimatorSet();
             resumeLauncherAnimation.play(workspaceAnimator);
             resumeLauncherAnimation.playSequentially(allAppsSlideIn, allAppsOvershoot);
+
+            resumeLauncherAnimation.addListener(mReapplyStateListener);
             return resumeLauncherAnimation;
         }
     }

quickstep/src/com/android/launcher3/LauncherInitListener.java

@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3;
+
+import static com.android.launcher3.states.RotationHelper.REQUEST_LOCK;
+
+import android.annotation.TargetApi;
+import android.os.Build;
+
+import com.android.launcher3.states.InternalStateHandler;
+import com.android.quickstep.ActivityControlHelper.ActivityInitListener;
+
+import java.util.function.BiPredicate;
+
+@TargetApi(Build.VERSION_CODES.P)
+public class LauncherInitListener extends InternalStateHandler implements ActivityInitListener {
+
+    private final BiPredicate<Launcher, Boolean> mOnInitListener;
+
+    public LauncherInitListener(BiPredicate<Launcher, Boolean> onInitListener) {
+        mOnInitListener = onInitListener;
+    }
+
+    @Override
+    protected boolean init(Launcher launcher, boolean alreadyOnHome) {
+        // For the duration of the gesture, lock the screen orientation to ensure that we do not
+        // rotate mid-quickscrub
+        launcher.getRotationHelper().setStateHandlerRequest(REQUEST_LOCK);
+        return mOnInitListener.test(launcher, alreadyOnHome);
+    }
+
+    @Override
+    public void register() {
+        initWhenReady();
+    }
+
+    @Override
+    public void unregister() {
+        clearReference();
+    }
+}

quickstep/src/com/android/launcher3/LauncherTransitionAnimator.java

@@ -1,64 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.launcher3;
-
-import android.animation.Animator;
-import android.animation.AnimatorSet;
-
-/**
- * Creates an AnimatorSet consisting on one Animator for Launcher transition, and one Animator for
- * the Window transitions.
- *
- * Allows for ending the Launcher animator without ending the Window animator.
- */
-public class LauncherTransitionAnimator {
-
-    private AnimatorSet mAnimatorSet;
-    private Animator mLauncherAnimator;
-    private Animator mWindowAnimator;
-
-    LauncherTransitionAnimator(Animator launcherAnimator, Animator windowAnimator) {
-        if (launcherAnimator != null) {
-            mLauncherAnimator = launcherAnimator;
-        }
-        mWindowAnimator = windowAnimator;
-
-        mAnimatorSet = new AnimatorSet();
-        if (launcherAnimator != null) {
-            mAnimatorSet.play(launcherAnimator);
-        }
-        mAnimatorSet.play(windowAnimator);
-    }
-
-    public AnimatorSet getAnimatorSet() {
-        return mAnimatorSet;
-    }
-
-    public void cancel() {
-        mAnimatorSet.cancel();
-    }
-
-    public boolean isRunning() {
-        return mAnimatorSet.isRunning();
-    }
-
-    public void finishLauncherAnimation() {
-        if (mLauncherAnimator != null) {
-            mLauncherAnimator.end();
-        }
-    }
-}

quickstep/src/com/android/launcher3/uioverrides/AllAppsState.java

@@ -24,7 +24,7 @@ import android.view.View;
 import com.android.launcher3.AbstractFloatingView;
 import com.android.launcher3.Launcher;
 import com.android.launcher3.LauncherState;
-import com.android.launcher3.R;
+import com.android.launcher3.allapps.AllAppsContainerView;
 import com.android.launcher3.userevent.nano.LauncherLogProto.ContainerType;
 
 /**
@@ -32,7 +32,7 @@ import com.android.launcher3.userevent.nano.LauncherLogProto.ContainerType;
  */
 public class AllAppsState extends LauncherState {
 
-    private static final int STATE_FLAGS = FLAG_DISABLE_ACCESSIBILITY;
+    private static final int STATE_FLAGS = FLAG_DISABLE_ACCESSIBILITY | FLAG_ALL_APPS_SCRIM;
 
     private static final PageAlphaProvider PAGE_ALPHA_PROVIDER = new PageAlphaProvider(DEACCEL_2) {
         @Override
@@ -57,7 +57,8 @@ public class AllAppsState extends LauncherState {
 
     @Override
     public String getDescription(Launcher launcher) {
-        return launcher.getString(R.string.all_apps_button_label);
+        AllAppsContainerView appsView = launcher.getAppsView();
+        return appsView.getDescription();
     }
 
     @Override
@@ -82,8 +83,15 @@ public class AllAppsState extends LauncherState {
     }
 
     @Override
-    public float getHoseatAlpha(Launcher launcher) {
-        return 0;
+    public int getVisibleElements(Launcher launcher) {
+        return ALL_APPS_HEADER | ALL_APPS_HEADER_EXTRA | ALL_APPS_CONTENT;
+    }
+
+    @Override
+    public float[] getOverviewTranslationFactor(Launcher launcher) {
+        // Keep the same translation as in overview, so that we don't slide around when
+        // transitioning to All Apps.
+        return LauncherState.OVERVIEW.getOverviewTranslationFactor(launcher);
     }
 
     @Override

quickstep/src/com/android/launcher3/uioverrides/DragPauseDetector.java

@@ -1,92 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.android.launcher3.uioverrides;
-
-import com.android.launcher3.Alarm;
-import com.android.launcher3.OnAlarmListener;
-
-/**
- * Utility class to detect a pause during a drag.
- */
-public class DragPauseDetector implements OnAlarmListener {
-
-    private static final float MAX_VELOCITY_TO_PAUSE = 0.2f;
-    private static final long PAUSE_DURATION = 100;
-
-    private final Alarm mAlarm;
-    private final Runnable mOnPauseCallback;
-
-    private boolean mTriggered = false;
-    private int mDisabledFlags = 0;
-
-    public DragPauseDetector(Runnable onPauseCallback) {
-        mOnPauseCallback = onPauseCallback;
-
-        mAlarm = new Alarm();
-        mAlarm.setOnAlarmListener(this);
-        mAlarm.setAlarm(PAUSE_DURATION);
-    }
-
-    public void onDrag(float velocity) {
-        if (mTriggered || !isEnabled()) {
-            return;
-        }
-
-        if (Math.abs(velocity) > MAX_VELOCITY_TO_PAUSE) {
-            // Cancel any previous alarm and set a new alarm
-            mAlarm.setAlarm(PAUSE_DURATION);
-        }
-    }
-
-    @Override
-    public void onAlarm(Alarm alarm) {
-        if (!mTriggered && isEnabled()) {
-            mTriggered = true;
-            mOnPauseCallback.run();
-        }
-    }
-
-    public boolean isTriggered () {
-        return mTriggered;
-    }
-
-    public boolean isEnabled() {
-        return mDisabledFlags == 0;
-    }
-
-    public void addDisabledFlags(int flags) {
-        boolean wasEnabled = isEnabled();
-        mDisabledFlags |= flags;
-        resetAlarm(wasEnabled);
-    }
-
-    public void clearDisabledFlags(int flags) {
-        boolean wasEnabled = isEnabled();
-        mDisabledFlags  &= ~flags;
-        resetAlarm(wasEnabled);
-    }
-
-    private void resetAlarm(boolean wasEnabled) {
-        boolean isEnabled = isEnabled();
-        if (wasEnabled == isEnabled) {
-          // Nothing has changed
-        } if (isEnabled && !mTriggered) {
-            mAlarm.setAlarm(PAUSE_DURATION);
-        } else if (!isEnabled) {
-            mAlarm.cancelAlarm();
-        }
-    }
-}

quickstep/src/com/android/launcher3/uioverrides/EdgeSwipeController.java

@@ -1,171 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.android.launcher3.uioverrides;
-
-import static com.android.launcher3.LauncherState.NORMAL;
-import static com.android.launcher3.LauncherState.OVERVIEW;
-import static com.android.launcher3.touch.SwipeDetector.DIRECTION_NEGATIVE;
-import static com.android.launcher3.touch.SwipeDetector.DIRECTION_POSITIVE;
-import static com.android.launcher3.touch.SwipeDetector.HORIZONTAL;
-import static com.android.launcher3.touch.SwipeDetector.VERTICAL;
-import static com.android.quickstep.TouchInteractionService.EDGE_NAV_BAR;
-
-import android.graphics.Rect;
-import android.metrics.LogMaker;
-import android.view.MotionEvent;
-
-import com.android.launcher3.DeviceProfile;
-import com.android.launcher3.DeviceProfile.OnDeviceProfileChangeListener;
-import com.android.launcher3.Launcher;
-import com.android.launcher3.LauncherState;
-import com.android.launcher3.anim.SpringAnimationHandler;
-import com.android.launcher3.dragndrop.DragLayer;
-import com.android.launcher3.userevent.nano.LauncherLogProto.Action.Touch;
-import com.android.launcher3.userevent.nano.LauncherLogProto.Action.Direction;
-import com.android.launcher3.userevent.nano.LauncherLogProto.ContainerType;
-import com.android.launcher3.util.VerticalSwipeController;
-import com.android.quickstep.RecentsView;
-
-class EventLogTags {
-    private EventLogTags() {
-    }  // don't instantiate
-
-    /** 524292 sysui_multi_action (content|4) */
-    public static final int SYSUI_MULTI_ACTION = 524292;
-
-    public static void writeSysuiMultiAction(Object[] content) {
-        android.util.EventLog.writeEvent(SYSUI_MULTI_ACTION, content);
-    }
-}
-
-class MetricsLogger {
-    private static MetricsLogger sMetricsLogger;
-
-    private static MetricsLogger getLogger() {
-        if (sMetricsLogger == null) {
-            sMetricsLogger = new MetricsLogger();
-        }
-        return sMetricsLogger;
-    }
-
-    protected void saveLog(Object[] rep) {
-        EventLogTags.writeSysuiMultiAction(rep);
-    }
-
-    public void write(LogMaker content) {
-        if (content.getType() == 0/*MetricsEvent.TYPE_UNKNOWN*/) {
-            content.setType(4/*MetricsEvent.TYPE_ACTION*/);
-        }
-        saveLog(content.serialize());
-    }
-}
-
-/**
- * Extension of {@link VerticalSwipeController} to go from NORMAL to OVERVIEW.
- */
-public class EdgeSwipeController extends VerticalSwipeController implements
-        OnDeviceProfileChangeListener {
-
-    private static final Rect sTempRect = new Rect();
-
-    private final MetricsLogger mMetricsLogger = new MetricsLogger();
-
-    public EdgeSwipeController(Launcher l) {
-        super(l, NORMAL, OVERVIEW, l.getDeviceProfile().isVerticalBarLayout()
-                ? HORIZONTAL : VERTICAL);
-        l.addOnDeviceProfileChangeListener(this);
-    }
-
-    @Override
-    public void onDeviceProfileChanged(DeviceProfile dp) {
-        mDetector.updateDirection(dp.isVerticalBarLayout() ? HORIZONTAL : VERTICAL);
-    }
-
-    @Override
-    protected boolean shouldInterceptTouch(MotionEvent ev) {
-        return mLauncher.isInState(NORMAL) && (ev.getEdgeFlags() & EDGE_NAV_BAR) != 0;
-    }
-
-    @Override
-    protected int getSwipeDirection(MotionEvent ev) {
-        return isTransitionFlipped() ? DIRECTION_NEGATIVE : DIRECTION_POSITIVE;
-    }
-
-    public EdgeSwipeController(Launcher l, LauncherState baseState) {
-        super(l, baseState);
-    }
-
-    @Override
-    protected boolean isTransitionFlipped() {
-        return mLauncher.getDeviceProfile().isSeascape();
-    }
-
-    @Override
-    protected void onTransitionComplete(boolean wasFling, boolean stateChanged) {
-        if (stateChanged && mToState instanceof OverviewState) {
-            // Mimic ActivityMetricsLogger.logAppTransitionMultiEvents() logging for
-            // "Recents" activity for app transition tests.
-            final LogMaker builder = new LogMaker(761/*APP_TRANSITION*/);
-            builder.setPackageName("com.android.systemui");
-            builder.addTaggedData(871/*FIELD_CLASS_NAME*/,
-                    "com.android.systemui.recents.RecentsActivity");
-            builder.addTaggedData(319/*APP_TRANSITION_DELAY_MS*/,
-                    0/* zero time */);
-            mMetricsLogger.write(builder);
-
-            // Add user event logging for launcher pipeline
-            int direction = Direction.UP;
-            if (mLauncher.getDeviceProfile().isVerticalBarLayout()) {
-                direction = Direction.LEFT;
-                if (mLauncher.getDeviceProfile().isSeascape()) {
-                    direction = Direction.RIGHT;
-                }
-            }
-            mLauncher.getUserEventDispatcher().logStateChangeAction(
-                    wasFling ? Touch.FLING : Touch.SWIPE, direction,
-                    ContainerType.NAVBAR, ContainerType.WORKSPACE, // src target
-                    ContainerType.TASKSWITCHER,                    // dst target
-                    mLauncher.getWorkspace().getCurrentPage());
-        }
-    }
-
-    @Override
-    protected void initSprings() {
-        mSpringHandlers = new SpringAnimationHandler[0];
-    }
-
-    @Override
-    protected float getShiftRange() {
-        return getShiftRange(mLauncher);
-    }
-
-    public static float getShiftRange(Launcher launcher) {
-        RecentsView.getPageRect(launcher.getDeviceProfile(), launcher, sTempRect);
-        DragLayer dl = launcher.getDragLayer();
-        Rect insets = dl.getInsets();
-        DeviceProfile dp = launcher.getDeviceProfile();
-
-        if (dp.isVerticalBarLayout()) {
-            if (dp.isSeascape()) {
-                return insets.left + sTempRect.left;
-            } else {
-                return dl.getWidth() - sTempRect.right + insets.right;
-            }
-        } else {
-            return dl.getHeight() - sTempRect.bottom + insets.bottom;
-        }
-    }
-}

quickstep/src/com/android/launcher3/uioverrides/FastOverviewState.java

@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.uioverrides;
+
+import com.android.launcher3.AbstractFloatingView;
+import com.android.launcher3.Launcher;
+import com.android.quickstep.QuickScrubController;
+import com.android.quickstep.views.RecentsView;
+
+/**
+ * Extension of overview state used for QuickScrub
+ */
+public class FastOverviewState extends OverviewState {
+
+    private static final int STATE_FLAGS = FLAG_SHOW_SCRIM | FLAG_DISABLE_RESTORE
+            | FLAG_DISABLE_INTERACTION | FLAG_OVERVIEW_UI | FLAG_HIDE_BACK_BUTTON;
+
+    public FastOverviewState(int id) {
+        super(id, QuickScrubController.QUICK_SCRUB_START_DURATION, STATE_FLAGS);
+    }
+
+    @Override
+    public void onStateTransitionEnd(Launcher launcher) {
+        super.onStateTransitionEnd(launcher);
+        RecentsView recentsView = launcher.getOverviewPanel();
+        recentsView.getQuickScrubController().onFinishedTransitionToQuickScrub();
+    }
+
+    public void onStateEnabled(Launcher launcher) {
+        super.onStateEnabled(launcher);
+        AbstractFloatingView.closeAllOpenViews(launcher);
+    }
+
+    @Override
+    public int getVisibleElements(Launcher launcher) {
+        return NONE;
+    }
+
+    @Override
+    public float[] getOverviewTranslationFactor(Launcher launcher) {
+        return new float[] {0f, 0.5f};
+    }
+}

quickstep/src/com/android/launcher3/uioverrides/LandscapeEdgeSwipeController.java

@@ -0,0 +1,71 @@
+package com.android.launcher3.uioverrides;
+
+import static com.android.launcher3.LauncherState.NORMAL;
+import static com.android.launcher3.LauncherState.OVERVIEW;
+import static com.android.quickstep.TouchInteractionService.EDGE_NAV_BAR;
+
+import android.view.MotionEvent;
+
+import com.android.launcher3.AbstractFloatingView;
+import com.android.launcher3.Launcher;
+import com.android.launcher3.LauncherState;
+import com.android.launcher3.touch.AbstractStateChangeTouchController;
+import com.android.launcher3.touch.SwipeDetector;
+import com.android.launcher3.userevent.nano.LauncherLogProto.Action.Direction;
+import com.android.quickstep.util.SysuiEventLogger;
+
+/**
+ * Touch controller for handling edge swipes in landscape/seascape UI
+ */
+public class LandscapeEdgeSwipeController extends AbstractStateChangeTouchController {
+
+    public LandscapeEdgeSwipeController(Launcher l) {
+        super(l, SwipeDetector.HORIZONTAL);
+    }
+
+    @Override
+    protected boolean canInterceptTouch(MotionEvent ev) {
+        if (mCurrentAnimation != null) {
+            // If we are already animating from a previous state, we can intercept.
+            return true;
+        }
+        if (AbstractFloatingView.getTopOpenView(mLauncher) != null) {
+            return false;
+        }
+        return mLauncher.isInState(NORMAL) && (ev.getEdgeFlags() & EDGE_NAV_BAR) != 0;
+    }
+
+    @Override
+    protected int getSwipeDirection(MotionEvent ev) {
+        mFromState = NORMAL;
+        mToState = OVERVIEW;
+        return SwipeDetector.DIRECTION_BOTH;
+    }
+
+    @Override
+    protected float getShiftRange() {
+        return mLauncher.getDragLayer().getWidth();
+    }
+
+    @Override
+    protected float initCurrentAnimation() {
+        float range = getShiftRange();
+        long maxAccuracy = (long) (2 * range);
+        mCurrentAnimation = mLauncher.getStateManager()
+                .createAnimationToNewWorkspace(mToState, maxAccuracy);
+        return (mLauncher.getDeviceProfile().isSeascape() ? 2 : -2) / range;
+    }
+
+    @Override
+    protected int getDirectionForLog() {
+        return mLauncher.getDeviceProfile().isSeascape() ? Direction.RIGHT : Direction.LEFT;
+    }
+
+    @Override
+    protected void onSwipeInteractionCompleted(LauncherState targetState, int logAction) {
+        super.onSwipeInteractionCompleted(targetState, logAction);
+        if (mFromState == NORMAL && targetState == OVERVIEW) {
+            SysuiEventLogger.writeDummyRecentsTransition(0);
+        }
+    }
+}

quickstep/src/com/android/launcher3/uioverrides/LandscapeStatesTouchController.java

@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.uioverrides;
+
+import static com.android.launcher3.LauncherState.ALL_APPS;
+import static com.android.launcher3.LauncherState.NORMAL;
+import static com.android.launcher3.LauncherState.OVERVIEW;
+
+import android.view.MotionEvent;
+
+import com.android.launcher3.AbstractFloatingView;
+import com.android.launcher3.Launcher;
+import com.android.launcher3.LauncherState;
+import com.android.quickstep.TouchInteractionService;
+import com.android.quickstep.views.RecentsView;
+
+/**
+ * Touch controller from going from OVERVIEW to ALL_APPS
+ */
+public class LandscapeStatesTouchController extends PortraitStatesTouchController {
+
+    public LandscapeStatesTouchController(Launcher l) {
+        super(l);
+    }
+
+    @Override
+    protected boolean canInterceptTouch(MotionEvent ev) {
+        if (mCurrentAnimation != null) {
+            // If we are already animating from a previous state, we can intercept.
+            return true;
+        }
+        if (AbstractFloatingView.getTopOpenView(mLauncher) != null) {
+            return false;
+        }
+        if (mLauncher.isInState(ALL_APPS)) {
+            // In all-apps only listen if the container cannot scroll itself
+            return mLauncher.getAppsView().shouldContainerScroll(ev);
+        } else if (mLauncher.isInState(NORMAL)) {
+            return true;
+        } else if (mLauncher.isInState(OVERVIEW)) {
+            RecentsView rv = mLauncher.getOverviewPanel();
+            return ev.getY() > (rv.getBottom() - rv.getPaddingBottom());
+        } else {
+            return false;
+        }
+    }
+
+    protected LauncherState getTargetState() {
+        if (mLauncher.isInState(ALL_APPS)) {
+            // Should swipe down go to OVERVIEW instead?
+            return TouchInteractionService.isConnected() ?
+                    mLauncher.getStateManager().getLastState() : NORMAL;
+        } else {
+            return ALL_APPS;
+        }
+    }
+}

quickstep/src/com/android/launcher3/uioverrides/OverviewState.java

@@ -16,20 +16,18 @@
 package com.android.launcher3.uioverrides;
 
 import static com.android.launcher3.LauncherAnimUtils.OVERVIEW_TRANSITION_MS;
-import static com.android.launcher3.anim.Interpolators.ACCEL_2;
+import static com.android.launcher3.anim.Interpolators.DEACCEL_2;
+import static com.android.launcher3.states.RotationHelper.REQUEST_ROTATE;
 
-import android.content.Context;
 import android.graphics.Rect;
 import android.view.View;
 
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.Launcher;
 import com.android.launcher3.LauncherState;
-import com.android.launcher3.R;
-import com.android.launcher3.Utilities;
 import com.android.launcher3.Workspace;
 import com.android.launcher3.userevent.nano.LauncherLogProto.ContainerType;
-import com.android.quickstep.RecentsView;
+import com.android.quickstep.views.RecentsView;
 
 /**
  * Definition for overview state
@@ -37,27 +35,31 @@ import com.android.quickstep.RecentsView;
 public class OverviewState extends LauncherState {
 
     private static final int STATE_FLAGS = FLAG_SHOW_SCRIM | FLAG_WORKSPACE_ICONS_CAN_BE_DRAGGED
-            | FLAG_DISABLE_RESTORE;
+            | FLAG_DISABLE_RESTORE | FLAG_OVERVIEW_UI;
 
     public OverviewState(int id) {
-        super(id, ContainerType.TASKSWITCHER, OVERVIEW_TRANSITION_MS, STATE_FLAGS);
+        this(id, OVERVIEW_TRANSITION_MS, STATE_FLAGS);
+    }
+
+    protected OverviewState(int id, int transitionDuration, int stateFlags) {
+        super(id, ContainerType.TASKSWITCHER, transitionDuration, stateFlags);
     }
 
     @Override
     public float[] getWorkspaceScaleAndTranslation(Launcher launcher) {
         Rect pageRect = new Rect();
-        RecentsView.getScaledDownPageRect(launcher.getDeviceProfile(), launcher, pageRect);
-        RecentsView rv = launcher.getOverviewPanel();
+        RecentsView.getPageRect(launcher.getDeviceProfile(), launcher, pageRect);
 
         if (launcher.getWorkspace().getNormalChildWidth() <= 0 || pageRect.isEmpty()) {
             return super.getWorkspaceScaleAndTranslation(launcher);
         }
 
-        float overlap = 0;
-        if (rv.getCurrentPage() >= rv.getFirstTaskIndex()) {
-            overlap = launcher.getResources().getDimension(R.dimen.workspace_overview_offset_x);
-        }
-        return getScaleAndTranslationForPageRect(launcher, overlap, pageRect);
+        return getScaleAndTranslationForPageRect(launcher, pageRect);
+    }
+
+    @Override
+    public float[] getOverviewTranslationFactor(Launcher launcher) {
+        return new float[] {0f, 0f};
     }
 
     @Override
@@ -73,8 +75,8 @@ public class OverviewState extends LauncherState {
     }
 
     @Override
-    public float getVerticalProgress(Launcher launcher) {
-        return getVerticalProgress(launcher.getDeviceProfile(), launcher);
+    public void onStateTransitionEnd(Launcher launcher) {
+        launcher.getRotationHelper().setCurrentStateRequest(REQUEST_ROTATE);
     }
 
     @Override
@@ -83,51 +85,50 @@ public class OverviewState extends LauncherState {
     }
 
     public PageAlphaProvider getWorkspacePageAlphaProvider(Launcher launcher) {
-        final int centerPage = launcher.getWorkspace().getNextPage();
-        return new PageAlphaProvider(ACCEL_2) {
+        return new PageAlphaProvider(DEACCEL_2) {
             @Override
             public float getPageAlpha(int pageIndex) {
-                return  pageIndex != centerPage ? 0 : 1f;
+                return 0;
             }
         };
     }
 
-    public static float[] getScaleAndTranslationForPageRect(Launcher launcher, float offsetX,
-            Rect pageRect) {
+    public static float[] getScaleAndTranslationForPageRect(Launcher launcher, Rect pageRect) {
         Workspace ws = launcher.getWorkspace();
         float childWidth = ws.getNormalChildWidth();
-        float childHeight = ws.getNormalChildHeight();
 
-        float scale = pageRect.height() / childHeight;
+        float scale = pageRect.width() / childWidth;
         Rect insets = launcher.getDragLayer().getInsets();
 
         float halfHeight = ws.getExpectedHeight() / 2;
         float childTop = halfHeight - scale * (halfHeight - ws.getPaddingTop() - insets.top);
         float translationY = pageRect.top - childTop;
 
-        // Align the workspace horizontally centered with the task rect
-        float halfWidth = ws.getExpectedWidth() / 2;
-        float childCenter = halfWidth -
-                scale * (halfWidth - ws.getPaddingLeft() - insets.left - childWidth / 2);
-        float translationX = pageRect.centerX() - childCenter;
-
-        if (Utilities.isRtl(launcher.getResources())) {
-            translationX -= offsetX / scale;
-        } else {
-            translationX += offsetX / scale;
-        }
-
-        return new float[] {scale, translationX, translationY};
+        return new float[] {scale, 0, translationY};
     }
 
-    public static float getVerticalProgress(DeviceProfile grid, Context context) {
-        if (!grid.isVerticalBarLayout()) {
-            return 1f;
+    @Override
+    public int getVisibleElements(Launcher launcher) {
+        if (launcher.getDeviceProfile().isVerticalBarLayout()) {
+            return NONE;
+        } else {
+            return launcher.getAppsView().getFloatingHeaderView().hasVisibleContent()
+                    ? HOTSEAT_EXTRA | ALL_APPS_HEADER_EXTRA : HOTSEAT_ICONS | HOTSEAT_EXTRA;
         }
+    }
 
-        float total = grid.heightPx;
-        float searchHeight = total - grid.availableHeightPx +
-                context.getResources().getDimension(R.dimen.all_apps_search_box_full_height);
-        return 1 - (searchHeight / total);
+    @Override
+    public float getVerticalProgress(Launcher launcher) {
+        if ((getVisibleElements(launcher) & ALL_APPS_HEADER_EXTRA) == 0) {
+            // We have no all apps content, so we're still at the fully down progress.
+            return super.getVerticalProgress(launcher);
+        }
+        return 1 - (getDefaultSwipeHeight(launcher)
+                / launcher.getAllAppsController().getShiftRange());
+    }
+
+    public static float getDefaultSwipeHeight(Launcher launcher) {
+        DeviceProfile dp = launcher.getDeviceProfile();
+        return dp.allAppsCellHeightPx - dp.allAppsIconTextSizePx;
     }
 }

quickstep/src/com/android/launcher3/uioverrides/OverviewSwipeUpController.java

@@ -1,71 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.android.launcher3.uioverrides;
-
-import static com.android.launcher3.LauncherState.OVERVIEW;
-
-import android.view.MotionEvent;
-
-import com.android.launcher3.Launcher;
-import com.android.launcher3.touch.SwipeDetector;
-import com.android.launcher3.userevent.nano.LauncherLogProto.Action.Direction;
-import com.android.launcher3.userevent.nano.LauncherLogProto.Action.Touch;
-import com.android.launcher3.userevent.nano.LauncherLogProto.ContainerType;
-import com.android.launcher3.util.VerticalSwipeController;
-
-/**
- * Extension of {@link VerticalSwipeController} which allows swipe up from OVERVIEW to ALL_APPS
- * Note that the swipe down is handled by {@link TwoStepSwipeController}.
- */
-public class OverviewSwipeUpController extends VerticalSwipeController {
-
-    public OverviewSwipeUpController(Launcher l) {
-        super(l, OVERVIEW);
-    }
-
-    @Override
-    protected boolean shouldInterceptTouch(MotionEvent ev) {
-        if (!mLauncher.isInState(OVERVIEW)) {
-            return false;
-        }
-        if (mLauncher.getDeviceProfile().isVerticalBarLayout()) {
-            return ev.getY() >
-                    mLauncher.getDragLayer().getHeight() * OVERVIEW.getVerticalProgress(mLauncher);
-        } else {
-            return mLauncher.getDragLayer().isEventOverHotseat(ev);
-        }
-    }
-
-    @Override
-    protected int getSwipeDirection(MotionEvent ev) {
-        return SwipeDetector.DIRECTION_POSITIVE;
-    }
-
-    @Override
-    protected void onTransitionComplete(boolean wasFling, boolean stateChanged) {
-        if (stateChanged) {
-            // Transition complete. log the action
-            mLauncher.getUserEventDispatcher().logStateChangeAction(
-                    wasFling ? Touch.FLING : Touch.SWIPE,
-                    Direction.UP,
-                    ContainerType.HOTSEAT,
-                    ContainerType.TASKSWITCHER,
-                    ContainerType.ALLAPPS,
-                    mLauncher.getWorkspace().getCurrentPage());
-        }
-
-    }
-}

quickstep/src/com/android/launcher3/uioverrides/PortraitStatesTouchController.java

@@ -0,0 +1,291 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.uioverrides;
+
+import static com.android.launcher3.LauncherState.ALL_APPS;
+import static com.android.launcher3.LauncherState.NORMAL;
+import static com.android.launcher3.LauncherState.OVERVIEW;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_OVERVIEW_TRANSLATION;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_VERTICAL_PROGRESS;
+import static com.android.launcher3.anim.Interpolators.FAST_OUT_SLOW_IN;
+import static com.android.launcher3.anim.Interpolators.LINEAR;
+
+import android.animation.TimeInterpolator;
+import android.animation.ValueAnimator;
+import android.view.MotionEvent;
+import android.view.animation.Interpolator;
+
+import com.android.launcher3.AbstractFloatingView;
+import com.android.launcher3.DeviceProfile;
+import com.android.launcher3.Launcher;
+import com.android.launcher3.LauncherState;
+import com.android.launcher3.anim.AnimatorSetBuilder;
+import com.android.launcher3.touch.AbstractStateChangeTouchController;
+import com.android.launcher3.touch.SwipeDetector;
+import com.android.launcher3.userevent.nano.LauncherLogProto.ContainerType;
+import com.android.quickstep.TouchInteractionService;
+import com.android.quickstep.util.SysuiEventLogger;
+
+/**
+ * Touch controller for handling various state transitions in portrait UI.
+ */
+public class PortraitStatesTouchController extends AbstractStateChangeTouchController {
+
+    private static final float TOTAL_DISTANCE_MULTIPLIER = 2f;
+    private static final float LINEAR_SCALE_LIMIT = 1 / TOTAL_DISTANCE_MULTIPLIER;
+
+    // Much be greater than LINEAR_SCALE_LIMIT;
+    private static final float MAXIMUM_DISTANCE_FACTOR = 0.9f;
+
+    // Maximum amount to overshoot.
+    private static final float MAX_OVERSHOOT = 0.3f;
+
+    private static final double PI_BY_2 = Math.PI / 2;
+
+    private InterpolatorWrapper mAllAppsInterpolatorWrapper = new InterpolatorWrapper();
+
+    // If > 0, the animation progress is clamped at that value as long as user is dragging.
+    private float mClampProgressUpdate = -1;
+
+    // If true, we will finish the current animation instantly on second touch.
+    private boolean mFinishFastOnSecondTouch;
+
+    private final Interpolator mAllAppsDampedInterpolator = new Interpolator() {
+
+        private final double mAngleMultiplier = Math.PI /
+                (2 * (MAXIMUM_DISTANCE_FACTOR - LINEAR_SCALE_LIMIT));
+
+        @Override
+        public float getInterpolation(float v) {
+            if (v <= LINEAR_SCALE_LIMIT) {
+                return v * TOTAL_DISTANCE_MULTIPLIER;
+            }
+            float overshoot = (v - LINEAR_SCALE_LIMIT);
+            return (float) (1 + MAX_OVERSHOOT * Math.sin(overshoot * mAngleMultiplier));
+        }
+    };
+
+    private final Interpolator mOverviewBoundInterpolator = (v) -> {
+            if (v >= MAXIMUM_DISTANCE_FACTOR) {
+                return 1;
+            }
+            return FAST_OUT_SLOW_IN.getInterpolation(v / MAXIMUM_DISTANCE_FACTOR);
+    };
+
+    public PortraitStatesTouchController(Launcher l) {
+        super(l, SwipeDetector.VERTICAL);
+    }
+
+    @Override
+    protected boolean canInterceptTouch(MotionEvent ev) {
+        if (mCurrentAnimation != null) {
+            if (mFinishFastOnSecondTouch) {
+                // TODO: Animate to finish instead.
+                mCurrentAnimation.getAnimationPlayer().end();
+            }
+
+            // If we are already animating from a previous state, we can intercept.
+            return true;
+        }
+        if (mLauncher.isInState(ALL_APPS)) {
+            // In all-apps only listen if the container cannot scroll itself
+            if (!mLauncher.getAppsView().shouldContainerScroll(ev)) {
+                return false;
+            }
+        } else {
+            // For all other states, only listen if the event originated below the hotseat height
+            DeviceProfile dp = mLauncher.getDeviceProfile();
+            int hotseatHeight = dp.hotseatBarSizePx + dp.getInsets().bottom;
+            if (ev.getY() < (mLauncher.getDragLayer().getHeight() - hotseatHeight)) {
+                return false;
+            }
+        }
+        if (AbstractFloatingView.getTopOpenView(mLauncher) != null) {
+            return false;
+        }
+        return true;
+    }
+
+    @Override
+    protected int getSwipeDirection(MotionEvent ev) {
+        final int directionsToDetectScroll;
+        if (mLauncher.isInState(ALL_APPS)) {
+            directionsToDetectScroll = SwipeDetector.DIRECTION_NEGATIVE;
+            mStartContainerType = ContainerType.ALLAPPS;
+        } else if (mLauncher.isInState(NORMAL)) {
+            directionsToDetectScroll = SwipeDetector.DIRECTION_POSITIVE;
+            mStartContainerType = ContainerType.HOTSEAT;
+        } else if (mLauncher.isInState(OVERVIEW)) {
+            directionsToDetectScroll = SwipeDetector.DIRECTION_POSITIVE;
+            mStartContainerType = ContainerType.TASKSWITCHER;
+        } else {
+            return 0;
+        }
+        mFromState = mLauncher.getStateManager().getState();
+        mToState = getTargetState();
+        if (mFromState == mToState) {
+            return 0;
+        }
+        return directionsToDetectScroll;
+    }
+
+    protected LauncherState getTargetState() {
+        if (mLauncher.isInState(ALL_APPS)) {
+            // Should swipe down go to OVERVIEW instead?
+            return TouchInteractionService.isConnected() ?
+                    mLauncher.getStateManager().getLastState() : NORMAL;
+        } else if (mLauncher.isInState(OVERVIEW)) {
+            return ALL_APPS;
+        } else {
+            return TouchInteractionService.isConnected() ? OVERVIEW : ALL_APPS;
+        }
+    }
+
+    private AnimatorSetBuilder getNormalToOverviewAnimation() {
+        mAllAppsInterpolatorWrapper.baseInterpolator = mAllAppsDampedInterpolator;
+
+        AnimatorSetBuilder builder = new AnimatorSetBuilder();
+        builder.setInterpolator(ANIM_VERTICAL_PROGRESS, mAllAppsInterpolatorWrapper);
+
+        builder.setInterpolator(ANIM_OVERVIEW_TRANSLATION, mOverviewBoundInterpolator);
+        return builder;
+    }
+
+    @Override
+    protected void updateProgress(float fraction) {
+        if (mClampProgressUpdate > 0) {
+            mCurrentAnimation.setPlayFraction(Math.min(fraction, mClampProgressUpdate));
+        } else {
+            super.updateProgress(fraction);
+        }
+    }
+
+    @Override
+    protected float initCurrentAnimation() {
+        float range = getShiftRange();
+        long maxAccuracy = (long) (2 * range);
+
+        float startVerticalShift = mFromState.getVerticalProgress(mLauncher) * range;
+        float endVerticalShift = mToState.getVerticalProgress(mLauncher) * range;
+
+        float totalShift = endVerticalShift - startVerticalShift;
+
+        final AnimatorSetBuilder builder;
+
+        if (mFromState == NORMAL && mToState == OVERVIEW && totalShift != 0) {
+            builder = getNormalToOverviewAnimation();
+            totalShift = totalShift * TOTAL_DISTANCE_MULTIPLIER;
+            mClampProgressUpdate = MAXIMUM_DISTANCE_FACTOR;
+        } else {
+            builder = new AnimatorSetBuilder();
+            mClampProgressUpdate = -1;
+        }
+
+        mCurrentAnimation = mLauncher.getStateManager()
+                .createAnimationToNewWorkspace(mToState, builder, maxAccuracy);
+
+        if (totalShift == 0) {
+            totalShift = Math.signum(mFromState.ordinal - mToState.ordinal)
+                    * OverviewState.getDefaultSwipeHeight(mLauncher);
+        }
+        return 1 / totalShift;
+    }
+
+    @Override
+    protected void updateSwipeCompleteAnimation(ValueAnimator animator, long expectedDuration,
+            LauncherState targetState, float velocity, boolean isFling) {
+        if (mFromState == NORMAL && mToState == OVERVIEW && targetState == OVERVIEW) {
+            mFinishFastOnSecondTouch = true;
+
+            // Update all apps interpolator
+            float currentFraction = mCurrentAnimation.getProgressFraction();
+            float absVelocity = Math.abs(velocity);
+            float currentValue = mAllAppsDampedInterpolator.getInterpolation(currentFraction);
+
+            if (isFling && absVelocity > 1 && currentFraction < LINEAR_SCALE_LIMIT) {
+
+                // TODO: Clean up these magic calculations
+                // Linearly interpolate the max value based on the velocity.
+                float maxValue = Math.max(absVelocity > 4 ? 1 + MAX_OVERSHOOT :
+                        1 + (absVelocity - 1) * MAX_OVERSHOOT / 3,
+                        currentValue);
+                double angleToPeak = PI_BY_2 - Math.asin(currentValue / maxValue);
+
+                if (expectedDuration != 0 && angleToPeak != 0) {
+
+                    float distanceLeft = 1 - currentFraction;
+                    mAllAppsInterpolatorWrapper.baseInterpolator = (f) -> {
+                        float scaledF = (f - currentFraction) / distanceLeft;
+
+                        if (scaledF < 0.5f) {
+                            double angle = PI_BY_2 - angleToPeak + scaledF * angleToPeak / 0.5f;
+                            return (float) (maxValue * Math.sin(angle));
+                        }
+
+                        scaledF = ((scaledF - .5f) / .5f);
+                        double angle = PI_BY_2 + 3 * scaledF * PI_BY_2;
+                        float amplitude = (1 - scaledF) * (1 - scaledF) * (maxValue - 1);
+                        return 1 + (float) (amplitude * Math.sin(angle));
+                    };
+
+                    animator.setDuration(expectedDuration).setInterpolator(LINEAR);
+                    return;
+                }
+            }
+
+            if (currentFraction < LINEAR_SCALE_LIMIT) {
+                mAllAppsInterpolatorWrapper.baseInterpolator = LINEAR;
+                super.updateSwipeCompleteAnimation(animator, expectedDuration, targetState,
+                        velocity, isFling);
+                return;
+            }
+            float extraValue = mAllAppsDampedInterpolator.getInterpolation(currentFraction) - 1;
+            float distanceLeft = 1 - currentFraction;
+
+            animator.setFloatValues(currentFraction, 1);
+            mAllAppsInterpolatorWrapper.baseInterpolator = (f) -> {
+                float scaledF = (f - currentFraction) / distanceLeft;
+
+                double angle = scaledF * 1.5 * Math.PI;
+                float amplitude = (1 - scaledF) * (1 - scaledF) * extraValue;
+                return 1 + (float) (amplitude * Math.sin(angle));
+            };
+            animator.setDuration(200).setInterpolator(LINEAR);
+            return;
+        }
+        mFinishFastOnSecondTouch = false;
+        super.updateSwipeCompleteAnimation(animator, expectedDuration, targetState,
+                velocity, isFling);
+    }
+
+    @Override
+    protected void onSwipeInteractionCompleted(LauncherState targetState, int logAction) {
+        super.onSwipeInteractionCompleted(targetState, logAction);
+        if (mFromState == NORMAL && targetState == OVERVIEW) {
+            SysuiEventLogger.writeDummyRecentsTransition(0);
+        }
+    }
+
+    private static class InterpolatorWrapper implements Interpolator {
+
+        public TimeInterpolator baseInterpolator = LINEAR;
+
+        @Override
+        public float getInterpolation(float v) {
+            return baseInterpolator.getInterpolation(v);
+        }
+    }
+}

quickstep/src/com/android/launcher3/uioverrides/RecentsViewStateController.java

@@ -16,147 +16,84 @@
 package com.android.launcher3.uioverrides;
 
 import static com.android.launcher3.LauncherState.NORMAL;
-import static com.android.launcher3.LauncherState.OVERVIEW;
+import static com.android.launcher3.anim.AlphaUpdateListener.updateVisibility;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_OVERVIEW_TRANSLATION;
+import static com.android.launcher3.anim.Interpolators.LINEAR;
+import static com.android.launcher3.compat.AccessibilityManagerCompat.isAccessibilityEnabled;
+import static com.android.quickstep.views.LauncherRecentsView.TRANSLATION_X_FACTOR;
+import static com.android.quickstep.views.LauncherRecentsView.TRANSLATION_Y_FACTOR;
+import static com.android.quickstep.views.RecentsView.CONTENT_ALPHA;
 
-import android.animation.Animator;
-import android.animation.AnimatorListenerAdapter;
-import android.animation.ObjectAnimator;
-import android.view.View;
+import android.animation.ValueAnimator;
+import android.annotation.TargetApi;
+import android.os.Build;
 
 import com.android.launcher3.Launcher;
 import com.android.launcher3.LauncherState;
 import com.android.launcher3.LauncherStateManager.AnimationConfig;
 import com.android.launcher3.LauncherStateManager.StateHandler;
 import com.android.launcher3.PagedView;
-import com.android.launcher3.Utilities;
-import com.android.launcher3.anim.AnimationSuccessListener;
 import com.android.launcher3.anim.AnimatorSetBuilder;
-import com.android.launcher3.anim.Interpolators;
-import com.android.quickstep.AnimatedFloat;
-import com.android.quickstep.RecentsView;
-import com.android.quickstep.TaskView;
+import com.android.launcher3.anim.PropertySetter;
+import com.android.quickstep.views.LauncherRecentsView;
 
+@TargetApi(Build.VERSION_CODES.O)
 public class RecentsViewStateController implements StateHandler {
 
     private final Launcher mLauncher;
-    private final RecentsView mRecentsView;
-    private final WorkspaceCard mWorkspaceCard;
-
-    private final AnimatedFloat mTransitionProgress = new AnimatedFloat(this::onTransitionProgress);
-    // The fraction representing the visibility of the RecentsView. This allows delaying the
-    // overall transition while the RecentsView is being shown or hidden.
-    private final AnimatedFloat mVisibilityMultiplier = new AnimatedFloat(this::onVisibilityProgress);
-
-    private boolean mIsRecentsScrollingToFirstTask;
+    private final LauncherRecentsView mRecentsView;
 
     public RecentsViewStateController(Launcher launcher) {
         mLauncher = launcher;
         mRecentsView = launcher.getOverviewPanel();
-        mRecentsView.setStateController(this);
-
-        mWorkspaceCard = (WorkspaceCard) mRecentsView.getChildAt(0);
-        mWorkspaceCard.setup(launcher);
     }
 
     @Override
     public void setState(LauncherState state) {
-        mWorkspaceCard.setWorkspaceScrollingEnabled(state == OVERVIEW);
-        setVisibility(state == OVERVIEW);
-        setTransitionProgress(state == OVERVIEW ? 1 : 0);
-        if (state == OVERVIEW) {
-            for (int i = mRecentsView.getFirstTaskIndex(); i < mRecentsView.getPageCount(); i++) {
-                ((TaskView) mRecentsView.getPageAt(i)).resetVisualProperties();
-            }
-            mRecentsView.updateCurveProperties();
+        mRecentsView.setContentAlpha(state.overviewUi ? 1 : 0);
+        updateVisibility(mRecentsView, isAccessibilityEnabled(mLauncher));
+        float[] translationFactor = state.getOverviewTranslationFactor(mLauncher);
+        mRecentsView.setTranslationXFactor(translationFactor[0]);
+        mRecentsView.setTranslationYFactor(translationFactor[1]);
+        if (state.overviewUi) {
+            mRecentsView.resetTaskVisuals();
         }
     }
 
     @Override
     public void setStateWithAnimation(final LauncherState toState,
             AnimatorSetBuilder builder, AnimationConfig config) {
-        boolean settingEnabled = Utilities.getPrefs(mLauncher)
-            .getBoolean("pref_scroll_to_first_task", false);
-        mIsRecentsScrollingToFirstTask = mLauncher.isInState(NORMAL) && toState == OVERVIEW
-                && settingEnabled;
-        // TODO: Instead of animating the workspace translationX, move the contents
-        mWorkspaceCard.setWorkspaceScrollingEnabled(mIsRecentsScrollingToFirstTask);
 
         // Scroll to the workspace card before changing to the NORMAL state.
+        LauncherState fromState = mLauncher.getStateManager().getState();
         int currPage = mRecentsView.getCurrentPage();
-        if (toState == NORMAL && currPage != 0 && !config.userControlled) {
+        if (fromState.overviewUi && toState == NORMAL && currPage != 0 && !config.userControlled) {
             int maxSnapDuration = PagedView.SLOW_PAGE_SNAP_ANIMATION_DURATION;
             int durationPerPage = maxSnapDuration / 10;
             int snapDuration = Math.min(maxSnapDuration, durationPerPage * currPage);
             mRecentsView.snapToPage(0, snapDuration);
-            builder.setStartDelay(snapDuration);
+            // Let the snapping animation play for a bit before we translate off screen.
+            builder.setStartDelay(snapDuration / 4);
         }
 
-        ObjectAnimator progressAnim =
-                mTransitionProgress.animateToValue(toState == OVERVIEW ? 1 : 0);
-        progressAnim.setDuration(config.duration);
-        progressAnim.setInterpolator(Interpolators.LINEAR);
-        progressAnim.addListener(new AnimationSuccessListener() {
+        PropertySetter setter = config.getProperSetter(builder);
+        float[] translationFactor = toState.getOverviewTranslationFactor(mLauncher);
+        setter.setFloat(mRecentsView, TRANSLATION_X_FACTOR,
+                translationFactor[0],
+                builder.getInterpolator(ANIM_OVERVIEW_TRANSLATION, LINEAR));
+        setter.setFloat(mRecentsView, TRANSLATION_Y_FACTOR,
+                translationFactor[1],
+                builder.getInterpolator(ANIM_OVERVIEW_TRANSLATION, LINEAR));
+        setter.setFloat(mRecentsView, CONTENT_ALPHA, toState.overviewUi ? 1 : 0, LINEAR);
 
-            @Override
-            public void onAnimationSuccess(Animator animator) {
-                mWorkspaceCard.setWorkspaceScrollingEnabled(toState == OVERVIEW);
-                mRecentsView.setCurrentPage(mRecentsView.getPageNearestToCenterOfScreen());
-            }
-        });
-        builder.play(progressAnim);
-
-        ObjectAnimator visibilityAnim = animateVisibility(toState == OVERVIEW);
-        visibilityAnim.setDuration(config.duration);
-        visibilityAnim.setInterpolator(Interpolators.LINEAR);
-        builder.play(visibilityAnim);
-    }
-
-    public void setVisibility(boolean isVisible) {
-        mVisibilityMultiplier.cancelAnimation();
-        mRecentsView.setVisibility(isVisible ? View.VISIBLE : View.GONE);
-        mVisibilityMultiplier.updateValue(isVisible ? 1 : 0);
-    }
-
-    public ObjectAnimator animateVisibility(boolean isVisible) {
-        ObjectAnimator anim = mVisibilityMultiplier.animateToValue(isVisible ? 1 : 0);
-        if (isVisible) {
-            anim.addListener(new AnimatorListenerAdapter() {
-                @Override
-                public void onAnimationStart(Animator animation) {
-                    mRecentsView.setVisibility(View.VISIBLE);
-                }
-            });
-        } else {
-            anim.addListener(new AnimationSuccessListener() {
-                @Override
-                public void onAnimationSuccess(Animator animator) {
-                    mRecentsView.setVisibility(View.GONE);
-                }
+        if (toState.overviewUi) {
+            ValueAnimator updateAnim = ValueAnimator.ofFloat(0, 1);
+            updateAnim.addUpdateListener(valueAnimator -> {
+                // While animating into recents, update the visible task data as needed
+                mRecentsView.loadVisibleTaskData();
             });
+            updateAnim.setDuration(config.duration);
+            builder.play(updateAnim);
         }
-        return anim;
-    }
-
-    public void setTransitionProgress(float progress) {
-        mTransitionProgress.cancelAnimation();
-        mTransitionProgress.updateValue(progress);
-    }
-
-    private void onTransitionProgress() {
-        applyProgress();
-        if (mIsRecentsScrollingToFirstTask) {
-            int scrollForFirstTask = mRecentsView.getScrollForPage(mRecentsView.getFirstTaskIndex());
-            int scrollForPage0 = mRecentsView.getScrollForPage(0);
-            mRecentsView.setScrollX((int) (mTransitionProgress.value * scrollForFirstTask
-                    + (1 - mTransitionProgress.value) * scrollForPage0));
-        }
-    }
-
-    private void onVisibilityProgress() {
-        applyProgress();
-    }
-
-    private void applyProgress() {
-        mRecentsView.setAlpha(mTransitionProgress.value * mVisibilityMultiplier.value);
     }
 }

quickstep/src/com/android/launcher3/uioverrides/TaggedAnimatorSetBuilder.java

@@ -1,51 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.android.launcher3.uioverrides;
-
-import android.animation.Animator;
-import android.util.SparseArray;
-
-import com.android.launcher3.anim.AnimatorSetBuilder;
-
-import java.util.Collections;
-import java.util.List;
-
-public class TaggedAnimatorSetBuilder extends AnimatorSetBuilder {
-
-    /**
-     * Map of the index in {@link #mAnims} to tag. All the animations in {@link #mAnims} starting
-     * from this index correspond to the tag (until a new tag is specified for an index)
-     */
-    private final SparseArray<Object> mTags = new SparseArray<>();
-
-    @Override
-    public void startTag(Object obj) {
-        mTags.put(mAnims.size(), obj);
-    }
-
-    public List<Animator> getAnimationsForTag(Object tag) {
-        int startIndex = mTags.indexOfValue(tag);
-        if (startIndex < 0) {
-            return Collections.emptyList();
-        }
-        int startPos = mTags.keyAt(startIndex);
-
-        int endIndex = startIndex + 1;
-        int endPos = endIndex >= mTags.size() ? mAnims.size() : mTags.keyAt(endIndex);
-
-        return mAnims.subList(startPos, endPos);
-    }
-}

quickstep/src/com/android/launcher3/uioverrides/TaskViewTouchController.java

@@ -15,10 +15,12 @@
  */
 package com.android.launcher3.uioverrides;
 
+import static com.android.launcher3.LauncherState.OVERVIEW;
+import static com.android.launcher3.anim.Interpolators.scrollInterpolatorForVelocity;
+
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
 import android.animation.AnimatorSet;
-import android.animation.ObjectAnimator;
 import android.animation.ValueAnimator;
 import android.util.Log;
 import android.view.MotionEvent;
@@ -26,30 +28,21 @@ import android.view.View;
 
 import com.android.launcher3.AbstractFloatingView;
 import com.android.launcher3.Launcher;
-import com.android.launcher3.LauncherState;
 import com.android.launcher3.Utilities;
 import com.android.launcher3.anim.AnimatorPlaybackController;
 import com.android.launcher3.dragndrop.DragLayer;
 import com.android.launcher3.touch.SwipeDetector;
-import com.android.launcher3.userevent.nano.LauncherLogProto;
-import com.android.launcher3.userevent.nano.LauncherLogProto.ContainerType;
 import com.android.launcher3.userevent.nano.LauncherLogProto.Action.Direction;
 import com.android.launcher3.userevent.nano.LauncherLogProto.Action.Touch;
 import com.android.launcher3.util.TouchController;
-import com.android.quickstep.RecentsView;
-import com.android.quickstep.TaskView;
-
-import static com.android.launcher3.LauncherState.ALL_APPS;
-import static com.android.launcher3.LauncherState.NORMAL;
-import static com.android.launcher3.LauncherState.OVERVIEW;
-import static com.android.launcher3.anim.Interpolators.DEACCEL_1_5;
-import static com.android.launcher3.anim.Interpolators.LINEAR;
-import static com.android.launcher3.anim.Interpolators.scrollInterpolatorForVelocity;
+import com.android.quickstep.PendingAnimation;
+import com.android.quickstep.views.RecentsView;
+import com.android.quickstep.views.TaskView;
 
 /**
- * Touch controller for swipe interaction in Overview state
+ * Touch controller for handling task view card swipes
  */
-public class OverviewSwipeController extends AnimatorListenerAdapter
+public class TaskViewTouchController extends AnimatorListenerAdapter
         implements TouchController, SwipeDetector.Listener {
 
     private static final String TAG = "OverviewSwipeController";
@@ -65,20 +58,19 @@ public class OverviewSwipeController extends AnimatorListenerAdapter
     private final RecentsView mRecentsView;
     private final int[] mTempCords = new int[2];
 
+    private PendingAnimation mPendingAnimation;
     private AnimatorPlaybackController mCurrentAnimation;
     private boolean mCurrentAnimationIsGoingUp;
 
     private boolean mNoIntercept;
-    private boolean mSwipeDownEnabled;
 
     private float mDisplacementShift;
     private float mProgressMultiplier;
     private float mEndDisplacement;
-    private int mStartingTarget;
 
     private TaskView mTaskBeingDragged;
 
-    public OverviewSwipeController(Launcher launcher) {
+    public TaskViewTouchController(Launcher launcher) {
         mLauncher = launcher;
         mRecentsView = launcher.getOverviewPanel();
         mDetector = new SwipeDetector(launcher, this, SwipeDetector.VERTICAL);
@@ -95,15 +87,6 @@ public class OverviewSwipeController extends AnimatorListenerAdapter
         return mLauncher.isInState(OVERVIEW);
     }
 
-    private boolean isEventOverHotseat(MotionEvent ev) {
-        if (mLauncher.getDeviceProfile().isVerticalBarLayout()) {
-            return ev.getY() >
-                    mLauncher.getDragLayer().getHeight() * OVERVIEW.getVerticalProgress(mLauncher);
-        } else {
-            return mLauncher.getDragLayer().isEventOverHotseat(ev);
-        }
-    }
-
     @Override
     public void onAnimationCancel(Animator animation) {
         if (mCurrentAnimation != null && animation == mCurrentAnimation.getTarget()) {
@@ -130,30 +113,15 @@ public class OverviewSwipeController extends AnimatorListenerAdapter
                 ignoreSlopWhenSettling = true;
             } else {
                 mTaskBeingDragged = null;
-                mSwipeDownEnabled = true;
 
-                int currentPage = mRecentsView.getCurrentPage();
-                if (currentPage == 0) {
-                    // User is on home tile
+                View view = mRecentsView.getChildAt(mRecentsView.getCurrentPage());
+                if (view instanceof TaskView && mLauncher.getDragLayer().isEventOverView(view, ev)) {
+                    // The tile can be dragged down to open the task.
+                    mTaskBeingDragged = (TaskView) view;
                     directionsToDetectScroll = SwipeDetector.DIRECTION_BOTH;
                 } else {
-                    View view = mRecentsView.getChildAt(currentPage);
-                    if (mLauncher.getDragLayer().isEventOverView(view, ev) &&
-                            view instanceof TaskView) {
-                        // The tile can be dragged down to open the task.
-                        mTaskBeingDragged = (TaskView) view;
-                        directionsToDetectScroll = SwipeDetector.DIRECTION_BOTH;
-                        mStartingTarget = LauncherLogProto.ItemType.TASK;
-                    } else if (isEventOverHotseat(ev)) {
-                        // The hotseat is being dragged
-                        directionsToDetectScroll = SwipeDetector.DIRECTION_POSITIVE;
-                        mSwipeDownEnabled = false;
-                        mStartingTarget = ContainerType.HOTSEAT;
-                    } else {
-                        mNoIntercept = true;
-                        mStartingTarget = ContainerType.WORKSPACE;
-                        return false;
-                    }
+                    mNoIntercept = true;
+                    return false;
                 }
             }
 
@@ -175,9 +143,6 @@ public class OverviewSwipeController extends AnimatorListenerAdapter
     }
 
     private void reInitAnimationController(boolean goingUp) {
-        if (!goingUp && !mSwipeDownEnabled) {
-            goingUp = true;
-        }
         if (mCurrentAnimation != null && mCurrentAnimationIsGoingUp == goingUp) {
             // No need to init
             return;
@@ -185,44 +150,30 @@ public class OverviewSwipeController extends AnimatorListenerAdapter
         if (mCurrentAnimation != null) {
             mCurrentAnimation.setPlayFraction(0);
         }
+        if (mPendingAnimation != null) {
+            mPendingAnimation.finish(false);
+            mPendingAnimation = null;
+        }
+
         mCurrentAnimationIsGoingUp = goingUp;
         float range = mLauncher.getAllAppsController().getShiftRange();
         long maxDuration = (long) (2 * range);
         DragLayer dl = mLauncher.getDragLayer();
 
-        if (mTaskBeingDragged == null) {
-            // User is either going to all apps or home
-            mCurrentAnimation = mLauncher.getStateManager()
-                    .createAnimationToNewWorkspace(goingUp ? ALL_APPS : NORMAL, maxDuration);
-            if (goingUp) {
-                mEndDisplacement = -range;
-            } else {
-                mEndDisplacement = EdgeSwipeController.getShiftRange(mLauncher);
-            }
+        if (goingUp) {
+            mPendingAnimation = mRecentsView.createTaskDismissAnimation(mTaskBeingDragged,
+                    true /* animateTaskView */, true /* removeTask */, maxDuration);
+            mCurrentAnimation = AnimatorPlaybackController
+                    .wrap(mPendingAnimation.anim, maxDuration);
+            mEndDisplacement = -mTaskBeingDragged.getHeight();
         } else {
-            if (goingUp) {
-                AnimatorSet anim = new AnimatorSet();
-                ObjectAnimator translate = ObjectAnimator.ofFloat(
-                        mTaskBeingDragged, View.TRANSLATION_Y, -mTaskBeingDragged.getBottom());
-                translate.setInterpolator(LINEAR);
-                translate.setDuration(maxDuration);
-                anim.play(translate);
+            AnimatorSet anim = new AnimatorSet();
+            // TODO: Setup a zoom animation
+            mCurrentAnimation = AnimatorPlaybackController.wrap(anim, maxDuration);
 
-                ObjectAnimator alpha = ObjectAnimator.ofFloat(mTaskBeingDragged, View.ALPHA, 0);
-                alpha.setInterpolator(DEACCEL_1_5);
-                alpha.setDuration(maxDuration);
-                anim.play(alpha);
-                mCurrentAnimation = AnimatorPlaybackController.wrap(anim, maxDuration);
-                mEndDisplacement = -mTaskBeingDragged.getBottom();
-            } else {
-                AnimatorSet anim = new AnimatorSet();
-                // TODO: Setup a zoom animation
-                mCurrentAnimation = AnimatorPlaybackController.wrap(anim, maxDuration);
-
-                mTempCords[1] = mTaskBeingDragged.getHeight();
-                dl.getDescendantCoordRelativeToSelf(mTaskBeingDragged, mTempCords);
-                mEndDisplacement = dl.getHeight() - mTempCords[1];
-            }
+            mTempCords[1] = mTaskBeingDragged.getHeight();
+            dl.getDescendantCoordRelativeToSelf(mTaskBeingDragged, mTempCords);
+            mEndDisplacement = dl.getHeight() - mTempCords[1];
         }
 
         mCurrentAnimation.getTarget().addListener(this);
@@ -260,9 +211,7 @@ public class OverviewSwipeController extends AnimatorListenerAdapter
         if (fling) {
             logAction = Touch.FLING;
             boolean goingUp = velocity < 0;
-            if (!goingUp && !mSwipeDownEnabled) {
-                goingToEnd = false;
-            } else if (goingUp != mCurrentAnimationIsGoingUp) {
+            if (goingUp != mCurrentAnimationIsGoingUp) {
                 // In case the fling is in opposite direction, make sure if is close enough
                 // from the start position
                 if (mCurrentAnimation.getProgressFraction()
@@ -288,7 +237,6 @@ public class OverviewSwipeController extends AnimatorListenerAdapter
         float nextFrameProgress = Utilities.boundToRange(
                 progress + velocity * SINGLE_FRAME_MS / Math.abs(mEndDisplacement), 0f, 1f);
 
-
         mCurrentAnimation.setEndAction(() -> onCurrentAnimationEnd(goingToEnd, logAction));
 
         ValueAnimator anim = mCurrentAnimation.getAnimationPlayer();
@@ -299,27 +247,17 @@ public class OverviewSwipeController extends AnimatorListenerAdapter
     }
 
     private void onCurrentAnimationEnd(boolean wasSuccess, int logAction) {
-        if (mTaskBeingDragged == null) {
-            LauncherState state = wasSuccess ?
-                    (mCurrentAnimationIsGoingUp ? ALL_APPS : NORMAL) : OVERVIEW;
-            mLauncher.getStateManager().goToState(state, false);
-
-        } else if (wasSuccess) {
-            if (mCurrentAnimationIsGoingUp) {
-                mRecentsView.onTaskDismissed(mTaskBeingDragged);
-            } else {
+        if (mPendingAnimation != null) {
+            mPendingAnimation.finish(wasSuccess);
+            mPendingAnimation = null;
+        }
+        if (wasSuccess) {
+            if (!mCurrentAnimationIsGoingUp) {
                 mTaskBeingDragged.launchTask(false);
                 mLauncher.getUserEventDispatcher().logTaskLaunch(logAction,
                         Direction.DOWN, mTaskBeingDragged.getTask().getTopComponent());
             }
         }
-        if (mTaskBeingDragged == null || (wasSuccess && mCurrentAnimationIsGoingUp)) {
-            mLauncher.getUserEventDispatcher().logStateChangeAction(logAction,
-                    mCurrentAnimationIsGoingUp ? Direction.UP : Direction.DOWN,
-                    mStartingTarget, ContainerType.TASKSWITCHER,
-                    mLauncher.getStateManager().getState().containerType,
-                    mRecentsView.getCurrentPage());
-        }
         mDetector.finishedScrolling();
         mTaskBeingDragged = null;
         mCurrentAnimation = null;

quickstep/src/com/android/launcher3/uioverrides/TwoStepSwipeController.java

@@ -1,496 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.android.launcher3.uioverrides;
-
-import static com.android.launcher3.LauncherState.ALL_APPS;
-import static com.android.launcher3.LauncherState.NORMAL;
-import static com.android.launcher3.LauncherState.OVERVIEW;
-import static com.android.launcher3.anim.Interpolators.scrollInterpolatorForVelocity;
-import static com.android.launcher3.anim.SpringAnimationHandler.Y_DIRECTION;
-import static com.android.quickstep.TouchInteractionService.EDGE_NAV_BAR;
-
-import android.animation.Animator;
-import android.animation.AnimatorListenerAdapter;
-import android.animation.AnimatorSet;
-import android.animation.ValueAnimator;
-import android.animation.ValueAnimator.AnimatorUpdateListener;
-import android.support.animation.SpringAnimation;
-import android.util.Log;
-import android.view.MotionEvent;
-
-import com.android.launcher3.AbstractFloatingView;
-import com.android.launcher3.Launcher;
-import com.android.launcher3.LauncherState;
-import com.android.launcher3.LauncherStateManager;
-import com.android.launcher3.LauncherStateManager.AnimationConfig;
-import com.android.launcher3.LauncherStateManager.StateHandler;
-import com.android.launcher3.Utilities;
-import com.android.launcher3.allapps.AllAppsContainerView;
-import com.android.launcher3.anim.AnimationSuccessListener;
-import com.android.launcher3.anim.AnimatorPlaybackController;
-import com.android.launcher3.anim.AnimatorSetBuilder;
-import com.android.launcher3.anim.SpringAnimationHandler;
-import com.android.launcher3.config.FeatureFlags;
-import com.android.launcher3.touch.SwipeDetector;
-import com.android.launcher3.userevent.nano.LauncherLogProto.Action.Direction;
-import com.android.launcher3.userevent.nano.LauncherLogProto.Action.Touch;
-import com.android.launcher3.userevent.nano.LauncherLogProto.ContainerType;
-import com.android.launcher3.util.FloatRange;
-import com.android.launcher3.util.TouchController;
-import com.android.quickstep.TouchInteractionService;
-
-import java.util.ArrayList;
-
-/**
- * Handles vertical touch gesture on the DragLayer
- */
-public class TwoStepSwipeController extends AnimatorListenerAdapter
-        implements TouchController, SwipeDetector.Listener {
-
-    private static final String TAG = "TwoStepSwipeController";
-
-    private static final float RECATCH_REJECTION_FRACTION = .0875f;
-    private static final int SINGLE_FRAME_MS = 16;
-    private static final long QUICK_SNAP_TO_OVERVIEW_DURATION = 250;
-
-    // Progress after which the transition is assumed to be a success in case user does not fling
-    private static final float SUCCESS_TRANSITION_PROGRESS = 0.5f;
-
-    /**
-     * Index of the vertical swipe handles in {@link LauncherStateManager#getStateHandlers()}.
-     */
-    private static final int SWIPE_HANDLER_INDEX = 0;
-
-    /**
-     * Index of various UI handlers in {@link LauncherStateManager#getStateHandlers()} not related
-     * to vertical swipe.
-     */
-    private static final int OTHER_HANDLERS_START_INDEX = SWIPE_HANDLER_INDEX + 1;
-
-    // Swipe progress range (when starting from NORMAL state) where OVERVIEW state is allowed
-    private static final float MIN_PROGRESS_TO_OVERVIEW = 0.1f;
-    private static final float MAX_PROGRESS_TO_OVERVIEW = 0.4f;
-
-    private static final int FLAG_OVERVIEW_DISABLED_OUT_OF_RANGE = 1 << 0;
-    private static final int FLAG_OVERVIEW_DISABLED_FLING = 1 << 1;
-    private static final int FLAG_OVERVIEW_DISABLED_CANCEL_STATE = 1 << 2;
-    private static final int FLAG_OVERVIEW_DISABLED = 1 << 4;
-    private static final int FLAG_DISABLED_TWO_TARGETS = 1 << 5;
-    private static final int FLAG_DISABLED_BACK_TARGET = 1 << 6;
-
-    private final Launcher mLauncher;
-    private final SwipeDetector mDetector;
-
-    private boolean mNoIntercept;
-    private int mStartContainerType;
-
-    private DragPauseDetector mDragPauseDetector;
-    private FloatRange mOverviewProgressRange;
-    private TaggedAnimatorSetBuilder mTaggedAnimatorSetBuilder;
-    private AnimatorSet mQuickOverviewAnimation;
-    private boolean mAnimatingToOverview;
-    private CroppedAnimationController mCroppedAnimationController;
-
-    private AnimatorPlaybackController mCurrentAnimation;
-    private LauncherState mFromState;
-    private LauncherState mToState;
-
-    private float mStartProgress;
-    // Ratio of transition process [0, 1] to drag displacement (px)
-    private float mProgressMultiplier;
-
-    private SpringAnimationHandler[] mSpringHandlers;
-
-    public TwoStepSwipeController(Launcher l) {
-        mLauncher = l;
-        mDetector = new SwipeDetector(l, this, SwipeDetector.VERTICAL);
-    }
-
-    private boolean canInterceptTouch(MotionEvent ev) {
-        if (mCurrentAnimation != null) {
-            // If we are already animating from a previous state, we can intercept.
-            return true;
-        }
-        if (mLauncher.isInState(NORMAL)) {
-            if ((ev.getEdgeFlags() & EDGE_NAV_BAR) != 0 &&
-                    !mLauncher.getDeviceProfile().isVerticalBarLayout()) {
-                // On normal swipes ignore edge swipes
-                return false;
-            }
-        } else if (mLauncher.isInState(ALL_APPS)) {
-            if (!mLauncher.getAppsView().shouldContainerScroll(ev)) {
-                return false;
-            }
-        } else {
-            // Don't listen for the swipe gesture if we are already in some other state.
-            return false;
-        }
-        if (mAnimatingToOverview) {
-            return false;
-        }
-        if (AbstractFloatingView.getTopOpenView(mLauncher) != null) {
-            return false;
-        }
-
-        return true;
-    }
-
-    @Override
-    public void onAnimationCancel(Animator animation) {
-        if (mCurrentAnimation != null && animation == mCurrentAnimation.getOriginalTarget()) {
-            Log.e(TAG, "Who dare cancel the animation when I am in control", new Exception());
-            clearState();
-        }
-    }
-
-    private void initSprings() {
-        AllAppsContainerView appsView = mLauncher.getAppsView();
-
-        SpringAnimationHandler handler = appsView.getSpringAnimationHandler();
-        if (handler == null) {
-            mSpringHandlers = new SpringAnimationHandler[0];
-            return;
-        }
-
-        ArrayList<SpringAnimationHandler> handlers = new ArrayList<>();
-        handlers.add(handler);
-
-        SpringAnimation searchSpring = appsView.getSearchUiManager().getSpringForFling();
-        if (searchSpring != null) {
-            SpringAnimationHandler searchHandler =
-                    new SpringAnimationHandler(Y_DIRECTION, handler.getFactory());
-            searchHandler.add(searchSpring, true /* setDefaultValues */);
-            handlers.add(searchHandler);
-        }
-
-        mSpringHandlers = handlers.toArray(new SpringAnimationHandler[handlers.size()]);
-    }
-
-    @Override
-    public boolean onControllerInterceptTouchEvent(MotionEvent ev) {
-        if (ev.getAction() == MotionEvent.ACTION_DOWN) {
-            mNoIntercept = !canInterceptTouch(ev);
-            if (mNoIntercept) {
-                return false;
-            }
-
-            // Now figure out which direction scroll events the controller will start
-            // calling the callbacks.
-            final int directionsToDetectScroll;
-            boolean ignoreSlopWhenSettling = false;
-
-            if (mCurrentAnimation != null) {
-                if (mCurrentAnimation.getProgressFraction() > 1 - RECATCH_REJECTION_FRACTION) {
-                    directionsToDetectScroll = SwipeDetector.DIRECTION_POSITIVE;
-                } else if (mCurrentAnimation.getProgressFraction() < RECATCH_REJECTION_FRACTION ) {
-                    directionsToDetectScroll = SwipeDetector.DIRECTION_NEGATIVE;
-                } else {
-                    directionsToDetectScroll = SwipeDetector.DIRECTION_BOTH;
-                    ignoreSlopWhenSettling = true;
-                }
-            } else {
-                if (mLauncher.isInState(ALL_APPS)) {
-                    directionsToDetectScroll = SwipeDetector.DIRECTION_NEGATIVE;
-                    mStartContainerType = ContainerType.ALLAPPS;
-                } else {
-                    directionsToDetectScroll = SwipeDetector.DIRECTION_POSITIVE;
-                    mStartContainerType = mLauncher.getDragLayer().isEventOverHotseat(ev) ?
-                            ContainerType.HOTSEAT : ContainerType.WORKSPACE;
-                }
-            }
-
-            mDetector.setDetectableScrollConditions(
-                    directionsToDetectScroll, ignoreSlopWhenSettling);
-
-            if (mSpringHandlers == null) {
-                initSprings();
-            }
-        }
-
-        if (mNoIntercept) {
-            return false;
-        }
-
-        onControllerTouchEvent(ev);
-        return mDetector.isDraggingOrSettling();
-    }
-
-    @Override
-    public boolean onControllerTouchEvent(MotionEvent ev) {
-        for (SpringAnimationHandler h : mSpringHandlers) {
-            h.addMovement(ev);
-        }
-        return mDetector.onTouchEvent(ev);
-    }
-
-    @Override
-    public void onDragStart(boolean start) {
-        if (mCurrentAnimation == null) {
-            float range = getShiftRange();
-            long maxAccuracy = (long) (2 * range);
-
-            mDragPauseDetector = new DragPauseDetector(this::onDragPauseDetected);
-            mDragPauseDetector.addDisabledFlags(FLAG_OVERVIEW_DISABLED_OUT_OF_RANGE);
-            if (FeatureFlags.ENABLE_TWO_SWIPE_TARGETS) {
-                mDragPauseDetector.addDisabledFlags(FLAG_DISABLED_TWO_TARGETS);
-            }
-
-            mOverviewProgressRange = new FloatRange();
-            mOverviewProgressRange.start = mLauncher.isInState(NORMAL)
-                    ? MIN_PROGRESS_TO_OVERVIEW
-                    : 1 - MAX_PROGRESS_TO_OVERVIEW;
-            mOverviewProgressRange.end = mOverviewProgressRange.start
-                    + MAX_PROGRESS_TO_OVERVIEW - MIN_PROGRESS_TO_OVERVIEW;
-
-            // Build current animation
-            mFromState = mLauncher.getStateManager().getState();
-            mToState = mLauncher.isInState(ALL_APPS) ? NORMAL : ALL_APPS;
-
-            if (mToState == NORMAL && mLauncher.getStateManager().getLastState() == OVERVIEW) {
-                mToState = OVERVIEW;
-                mDragPauseDetector.addDisabledFlags(FLAG_DISABLED_BACK_TARGET);
-            }
-
-            mTaggedAnimatorSetBuilder = new TaggedAnimatorSetBuilder();
-            mCurrentAnimation = mLauncher.getStateManager().createAnimationToNewWorkspace(
-                    mToState, mTaggedAnimatorSetBuilder, maxAccuracy);
-
-            if (!TouchInteractionService.isConnected()) {
-                mDragPauseDetector.addDisabledFlags(FLAG_OVERVIEW_DISABLED);
-            }
-
-            mCurrentAnimation.getTarget().addListener(this);
-            mStartProgress = 0;
-            mProgressMultiplier = (mLauncher.isInState(ALL_APPS) ? 1 : -1) / range;
-            mCurrentAnimation.dispatchOnStart();
-        } else {
-            mCurrentAnimation.pause();
-            mStartProgress = mCurrentAnimation.getProgressFraction();
-
-            mDragPauseDetector.clearDisabledFlags(FLAG_OVERVIEW_DISABLED_FLING);
-            updatePauseDetectorRangeFlag();
-        }
-
-        for (SpringAnimationHandler h : mSpringHandlers) {
-            h.skipToEnd();
-        }
-    }
-
-    private float getShiftRange() {
-        return mLauncher.getAllAppsController().getShiftRange();
-    }
-
-    @Override
-    public boolean onDrag(float displacement, float velocity) {
-        float deltaProgress = mProgressMultiplier * displacement;
-        mCurrentAnimation.setPlayFraction(deltaProgress + mStartProgress);
-
-        updatePauseDetectorRangeFlag();
-        mDragPauseDetector.onDrag(velocity);
-
-        return true;
-    }
-
-    private void updatePauseDetectorRangeFlag() {
-        if (mOverviewProgressRange.contains(mCurrentAnimation.getProgressFraction())) {
-            mDragPauseDetector.clearDisabledFlags(FLAG_OVERVIEW_DISABLED_OUT_OF_RANGE);
-        } else {
-            mDragPauseDetector.addDisabledFlags(FLAG_OVERVIEW_DISABLED_OUT_OF_RANGE);
-        }
-    }
-
-    @Override
-    public void onDragEnd(float velocity, boolean fling) {
-        mDragPauseDetector.addDisabledFlags(FLAG_OVERVIEW_DISABLED_FLING);
-
-        final int logAction;
-        LauncherState targetState;
-        final float progress = mCurrentAnimation.getProgressFraction();
-
-        if (fling) {
-            logAction = Touch.FLING;
-            targetState = velocity < 0 ? ALL_APPS : mLauncher.getStateManager().getLastState();
-            // snap to top or bottom using the release velocity
-        } else {
-            logAction = Touch.SWIPE;
-            targetState = (progress > SUCCESS_TRANSITION_PROGRESS) ? mToState : mFromState;
-        }
-
-        if (fling && targetState == ALL_APPS) {
-            for (SpringAnimationHandler h : mSpringHandlers) {
-                // The icons are moving upwards, so we go to 0 from 1. (y-axis 1 is below 0.)
-                h.animateToFinalPosition(0 /* pos */, 1 /* startValue */);
-            }
-        }
-
-        float endProgress;
-
-        if (mDragPauseDetector.isTriggered() && targetState == NORMAL) {
-            targetState = OVERVIEW;
-            endProgress = OVERVIEW.getVerticalProgress(mLauncher);
-            if (mFromState == NORMAL) {
-                endProgress = 1 - endProgress;
-            }
-        } else if (targetState == mToState) {
-            endProgress = 1;
-        } else {
-            endProgress = 0;
-        }
-
-        LauncherState targetStateFinal = targetState;
-        mCurrentAnimation.setEndAction(() ->
-                onSwipeInteractionCompleted(targetStateFinal, logAction));
-
-        float nextFrameProgress = Utilities.boundToRange(
-                progress + velocity * SINGLE_FRAME_MS / getShiftRange(), 0f, 1f);
-
-        ValueAnimator anim = mCurrentAnimation.getAnimationPlayer();
-        anim.setFloatValues(nextFrameProgress, endProgress);
-        anim.setDuration(
-                SwipeDetector.calculateDuration(velocity, Math.abs(endProgress - progress)));
-        anim.setInterpolator(scrollInterpolatorForVelocity(velocity));
-        anim.start();
-    }
-
-    private void onSwipeInteractionCompleted(LauncherState targetState, int logAction) {
-        if (targetState != mFromState) {
-            // Transition complete. log the action
-            mLauncher.getUserEventDispatcher().logStateChangeAction(logAction,
-                    mToState == ALL_APPS ? Direction.UP : Direction.DOWN,
-                    mStartContainerType,
-                    mFromState.containerType,
-                    mToState.containerType,
-                    mLauncher.getWorkspace().getCurrentPage());
-        }
-        clearState();
-
-        // TODO: mQuickOverviewAnimation might still be running in which changing a state instantly
-        // may cause a jump. Animate the state change with a short duration in this case?
-        mLauncher.getStateManager().goToState(targetState, false /* animated */);
-    }
-
-    private void onDragPauseDetected() {
-        final ValueAnimator twoStepAnimator = ValueAnimator.ofFloat(0, 1);
-        twoStepAnimator.setDuration(mCurrentAnimation.getDuration());
-        StateHandler[] handlers = mLauncher.getStateManager().getStateHandlers();
-
-        // Change the current animation to only play the vertical handle
-        AnimatorSet anim = new AnimatorSet();
-        anim.playTogether(mTaggedAnimatorSetBuilder.getAnimationsForTag(
-                handlers[SWIPE_HANDLER_INDEX]));
-        anim.play(twoStepAnimator);
-        mCurrentAnimation = mCurrentAnimation.cloneFor(anim);
-
-        AnimatorSetBuilder builder = new AnimatorSetBuilder();
-        AnimationConfig config = new AnimationConfig();
-        config.duration = QUICK_SNAP_TO_OVERVIEW_DURATION;
-        for (int i = OTHER_HANDLERS_START_INDEX; i < handlers.length; i++) {
-            handlers[i].setStateWithAnimation(OVERVIEW, builder, config);
-        }
-        mQuickOverviewAnimation = builder.build();
-        mQuickOverviewAnimation.addListener(new AnimationSuccessListener() {
-            @Override
-            public void onAnimationSuccess(Animator animator) {
-                onQuickOverviewAnimationComplete(twoStepAnimator);
-            }
-        });
-        mQuickOverviewAnimation.start();
-    }
-
-    private void onQuickOverviewAnimationComplete(ValueAnimator animator) {
-        if (mAnimatingToOverview) {
-            return;
-        }
-
-        // For the remainder to the interaction, the user can either go to the ALL_APPS state or
-        // the OVERVIEW state.
-        // The remaining state handlers are on the OVERVIEW state. Create one animation towards the
-        // ALL_APPS state and only call it when the user moved above the current range.
-        AnimationConfig config = new AnimationConfig();
-        config.duration = (long) (2 * getShiftRange());
-        config.userControlled = true;
-
-        AnimatorSetBuilder builderToAllAppsState = new AnimatorSetBuilder();
-        StateHandler[] handlers = mLauncher.getStateManager().getStateHandlers();
-        for (int i = OTHER_HANDLERS_START_INDEX; i < handlers.length; i++) {
-            handlers[i].setStateWithAnimation(ALL_APPS, builderToAllAppsState, config);
-        }
-
-        mCroppedAnimationController = new CroppedAnimationController(
-                AnimatorPlaybackController.wrap(builderToAllAppsState.build(), config.duration),
-                new FloatRange(animator.getAnimatedFraction(), mToState == ALL_APPS ? 1 : 0));
-        animator.addUpdateListener(mCroppedAnimationController);
-    }
-
-    private void clearState() {
-        mCurrentAnimation = null;
-        mTaggedAnimatorSetBuilder = null;
-        if (mDragPauseDetector != null) {
-            mDragPauseDetector.addDisabledFlags(FLAG_OVERVIEW_DISABLED_CANCEL_STATE);
-        }
-        mDragPauseDetector = null;
-
-        if (mQuickOverviewAnimation != null) {
-            mQuickOverviewAnimation.cancel();
-            mQuickOverviewAnimation = null;
-        }
-        mCroppedAnimationController = null;
-        mAnimatingToOverview = false;
-
-        mDetector.finishedScrolling();
-    }
-
-    /**
-     * {@link AnimatorUpdateListener} which controls another animation for a fraction of range
-     */
-    private static class CroppedAnimationController implements AnimatorUpdateListener {
-
-        private final AnimatorPlaybackController mTarget;
-        private final FloatRange mRange;
-
-        CroppedAnimationController(AnimatorPlaybackController target, FloatRange range) {
-            mTarget = target;
-            mRange = range;
-        }
-
-
-        @Override
-        public void onAnimationUpdate(ValueAnimator valueAnimator) {
-            float fraction = valueAnimator.getAnimatedFraction();
-
-            if (mRange.start < mRange.end) {
-                if (fraction <= mRange.start) {
-                    mTarget.setPlayFraction(0);
-                } else if (fraction >= mRange.end) {
-                    mTarget.setPlayFraction(1);
-                } else {
-                    mTarget.setPlayFraction((fraction - mRange.start) / (mRange.end - mRange.start));
-                }
-            } else if (mRange.start > mRange.end) {
-                if (fraction >= mRange.start) {
-                    mTarget.setPlayFraction(0);
-                } else if (fraction <= mRange.end) {
-                    mTarget.setPlayFraction(1);
-                } else {
-                    mTarget.setPlayFraction((fraction - mRange.start) / (mRange.end - mRange.start));
-                }
-            } else {
-                // mRange.start == mRange.end
-                mTarget.setPlayFraction(0);
-            }
-        }
-    }
-}

quickstep/src/com/android/launcher3/uioverrides/UiFactory.java

@@ -16,41 +16,46 @@
 
 package com.android.launcher3.uioverrides;
 
-import static com.android.launcher3.LauncherState.NORMAL;
+import static com.android.launcher3.Utilities.getPrefs;
+import static com.android.quickstep.OverviewInteractionState.KEY_SWIPE_UP_ENABLED;
 
-import android.graphics.Bitmap;
-import android.graphics.Canvas;
-import android.graphics.PointF;
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.view.View;
 import android.view.View.AccessibilityDelegate;
 
+import com.android.launcher3.AbstractFloatingView;
+import com.android.launcher3.Hotseat;
 import com.android.launcher3.Launcher;
 import com.android.launcher3.LauncherStateManager.StateHandler;
-import com.android.launcher3.config.FeatureFlags;
-import com.android.launcher3.graphics.BitmapRenderer;
+import com.android.launcher3.R;
 import com.android.launcher3.util.TouchController;
 import com.android.quickstep.OverviewInteractionState;
-import com.android.quickstep.RecentsView;
-import com.android.systemui.shared.recents.view.RecentsTransition;
+import com.android.quickstep.RecentsModel;
+import com.android.quickstep.views.RecentsView;
 
 public class UiFactory {
 
-    private static final String CONTROL_REMOTE_APP_TRANSITION_PERMISSION =
-            "android.permission.CONTROL_REMOTE_APP_TRANSITION_ANIMATIONS";
-
-    public static final boolean USE_HARDWARE_BITMAP = false; // FeatureFlags.IS_DOGFOOD_BUILD;
-
     public static TouchController[] createTouchControllers(Launcher launcher) {
-        if (FeatureFlags.ENABLE_TWO_SWIPE_TARGETS) {
+        SharedPreferences prefs = getPrefs(launcher);
+        boolean swipeUpEnabled = prefs.getBoolean(KEY_SWIPE_UP_ENABLED, true);
+        if (!swipeUpEnabled) {
             return new TouchController[] {
-                    new IgnoreTouchesInQuickScrub(),
-                    new EdgeSwipeController(launcher),
-                    new TwoStepSwipeController(launcher),
-                    new OverviewSwipeController(launcher)};
+                    launcher.getDragController(),
+                    new LandscapeStatesTouchController(launcher),
+                    new TaskViewTouchController(launcher)};
+        }
+        if (launcher.getDeviceProfile().isVerticalBarLayout()) {
+            return new TouchController[] {
+                    launcher.getDragController(),
+                    new LandscapeStatesTouchController(launcher),
+                    new LandscapeEdgeSwipeController(launcher),
+                    new TaskViewTouchController(launcher)};
         } else {
             return new TouchController[] {
-                    new IgnoreTouchesInQuickScrub(),
-                    new TwoStepSwipeController(launcher),
-                    new OverviewSwipeController(launcher)};
+                    launcher.getDragController(),
+                    new PortraitStatesTouchController(launcher),
+                    new TaskViewTouchController(launcher)};
         }
     }
 
@@ -64,28 +69,41 @@ public class UiFactory {
                 new RecentsViewStateController(launcher)};
     }
 
-    public static void onWorkspaceLongPress(Launcher launcher, PointF touchPoint) {
-        OptionsPopupView.show(launcher, touchPoint.x, touchPoint.y);
-    }
-
     public static void onLauncherStateOrFocusChanged(Launcher launcher) {
-        OverviewInteractionState.setBackButtonVisible(launcher, launcher == null
-                || !launcher.isInState(NORMAL) || !launcher.hasWindowFocus());
-    }
-
-    public static Bitmap createFromRenderer(int width, int height, boolean forceSoftwareRenderer,
-            BitmapRenderer renderer) {
-        if (USE_HARDWARE_BITMAP && !forceSoftwareRenderer) {
-            return RecentsTransition.createHardwareBitmap(width, height, renderer::render);
-        } else {
-            Bitmap result = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
-            renderer.render(new Canvas(result));
-            return result;
+        boolean shouldBackButtonBeHidden = launcher != null
+                && launcher.getStateManager().getState().hideBackButton
+                && launcher.hasWindowFocus();
+        if (shouldBackButtonBeHidden) {
+            // Show the back button if there is a floating view visible.
+            shouldBackButtonBeHidden = AbstractFloatingView.getTopOpenView(launcher) == null;
         }
+        OverviewInteractionState.getInstance(launcher)
+                .setBackButtonVisible(!shouldBackButtonBeHidden);
     }
 
     public static void resetOverview(Launcher launcher) {
         RecentsView recents = launcher.getOverviewPanel();
         recents.reset();
     }
+
+    public static void onStart(Context context) {
+        RecentsModel model = RecentsModel.getInstance(context);
+        if (model != null) {
+            model.onStart();
+        }
+    }
+
+    public static void onTrimMemory(Context context, int level) {
+        RecentsModel model = RecentsModel.getInstance(context);
+        if (model != null) {
+            model.onTrimMemory(level);
+        }
+    }
+
+    public static View[] getHotseatExtraContent(Hotseat hotseat) {
+        return new View[] {
+                hotseat.findViewById(R.id.drag_indicator),
+                hotseat.findViewById(R.id.search_container_hotseat),
+        };
+    }
 }

quickstep/src/com/android/launcher3/uioverrides/WorkspaceCard.java

@@ -1,127 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.android.launcher3.uioverrides;
-
-import static com.android.launcher3.LauncherState.NORMAL;
-import static com.android.quickstep.RecentsView.SCROLL_TYPE_WORKSPACE;
-
-import android.content.Context;
-import android.graphics.Canvas;
-import android.graphics.Rect;
-import android.util.AttributeSet;
-import android.view.View;
-import android.view.View.OnClickListener;
-
-import com.android.launcher3.Launcher;
-import com.android.launcher3.R;
-import com.android.launcher3.Workspace;
-import com.android.quickstep.RecentsView;
-import com.android.quickstep.RecentsView.PageCallbacks;
-import com.android.quickstep.RecentsView.ScrollState;
-
-public class WorkspaceCard extends View implements PageCallbacks, OnClickListener {
-
-    private final Rect mTempRect = new Rect();
-
-    private Launcher mLauncher;
-    private Workspace mWorkspace;
-
-    private float mLinearInterpolationForPage2 = 1;
-    private float mTranslateXPage0, mTranslateXPage1;
-    private float mExtraScrollShift;
-
-    private boolean mIsWorkspaceScrollingEnabled;
-
-    public WorkspaceCard(Context context) {
-        this(context, null);
-    }
-
-    public WorkspaceCard(Context context, AttributeSet attrs) {
-        this(context, attrs, 0);
-    }
-
-    public WorkspaceCard(Context context, AttributeSet attrs, int defStyleAttr) {
-        super(context, attrs, defStyleAttr);
-        setOnClickListener(this);
-    }
-
-    /**
-     * Draw nothing.
-     */
-    @Override
-    public void draw(Canvas canvas) { }
-
-    @Override
-    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
-        super.onLayout(changed, left, top, right, bottom);
-
-        // Initiate data
-        mLinearInterpolationForPage2 = RecentsView.getScaledDownPageRect(
-                mLauncher.getDeviceProfile(), mLauncher, mTempRect);
-
-        float[] scale = OverviewState.getScaleAndTranslationForPageRect(mLauncher, 0, mTempRect);
-        mTranslateXPage0 = scale[1];
-        mTranslateXPage1 = OverviewState
-                .getScaleAndTranslationForPageRect(mLauncher,
-                        getResources().getDimension(R.dimen.workspace_overview_offset_x) / scale[0],
-                        mTempRect)[1];
-
-        mExtraScrollShift = 0;
-        if (mWorkspace != null && getWidth() > 0) {
-            float workspaceWidth = mWorkspace.getNormalChildWidth() * scale[0];
-            mExtraScrollShift = (workspaceWidth - getWidth()) / 2;
-            setScaleX(workspaceWidth / getWidth());
-        }
-    }
-
-    @Override
-    public void onClick(View view) {
-        mLauncher.getStateManager().goToState(NORMAL);
-    }
-
-    public void setup(Launcher launcher) {
-        mLauncher = launcher;
-        mWorkspace = mLauncher.getWorkspace();
-    }
-
-    public void setWorkspaceScrollingEnabled(boolean isEnabled) {
-        mIsWorkspaceScrollingEnabled = isEnabled;
-    }
-
-    @Override
-    public int onPageScroll(ScrollState scrollState) {
-        float factor = scrollState.linearInterpolation;
-        float translateX = scrollState.distanceFromScreenCenter;
-        if (mIsWorkspaceScrollingEnabled) {
-            float shift = factor * (mTranslateXPage1 - mTranslateXPage0);
-            mWorkspace.setTranslationX(shift + mTranslateXPage0);
-            translateX += shift;
-        }
-
-        setTranslationX(translateX);
-
-        // If the workspace card is still the first page, shift all the other pages.
-        if (scrollState.linearInterpolation > mLinearInterpolationForPage2) {
-            scrollState.prevPageExtraWidth = 0;
-        } else if (mLinearInterpolationForPage2 > 0) {
-            scrollState.prevPageExtraWidth = mExtraScrollShift *
-                    (1 - scrollState.linearInterpolation / mLinearInterpolationForPage2);
-        } else {
-            scrollState.prevPageExtraWidth = mExtraScrollShift;
-        }
-        return SCROLL_TYPE_WORKSPACE;
-    }
-}

quickstep/src/com/android/quickstep/ActivityControlHelper.java

@@ -0,0 +1,367 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.quickstep;
+
+import static com.android.launcher3.LauncherState.FAST_OVERVIEW;
+import static com.android.launcher3.LauncherState.OVERVIEW;
+import static com.android.launcher3.allapps.AllAppsTransitionController.ALL_APPS_PROGRESS;
+import static com.android.launcher3.anim.Interpolators.LINEAR;
+
+import android.animation.AnimatorSet;
+import android.animation.ObjectAnimator;
+import android.app.ActivityOptions;
+import android.content.Context;
+import android.content.Intent;
+import android.graphics.Rect;
+import android.os.Handler;
+import android.os.Looper;
+import android.support.annotation.Nullable;
+import android.support.annotation.UiThread;
+import android.view.View;
+
+import com.android.launcher3.BaseDraggingActivity;
+import com.android.launcher3.DeviceProfile;
+import com.android.launcher3.Launcher;
+import com.android.launcher3.LauncherAppState;
+import com.android.launcher3.LauncherInitListener;
+import com.android.launcher3.LauncherState;
+import com.android.launcher3.allapps.AllAppsTransitionController;
+import com.android.launcher3.anim.AnimatorPlaybackController;
+import com.android.launcher3.util.ViewOnDrawExecutor;
+import com.android.quickstep.views.LauncherLayoutListener;
+import com.android.quickstep.views.RecentsView;
+import com.android.quickstep.views.TaskView;
+import com.android.systemui.shared.system.ActivityManagerWrapper;
+import com.android.systemui.shared.system.ActivityOptionsCompat;
+import com.android.systemui.shared.system.AssistDataReceiver;
+import com.android.systemui.shared.system.RecentsAnimationListener;
+import com.android.systemui.shared.system.RemoteAnimationAdapterCompat;
+
+import java.util.function.BiPredicate;
+
+/**
+ * Utility class which abstracts out the logical differences between Launcher and RecentsActivity.
+ */
+public interface ActivityControlHelper<T extends BaseDraggingActivity> {
+
+    LayoutListener createLayoutListener(T activity);
+
+    void onQuickstepGestureStarted(T activity, boolean activityVisible);
+
+    void onQuickInteractionStart(T activity, boolean activityVisible);
+
+    void executeOnNextDraw(T activity, TaskView targetView, Runnable action);
+
+    void onTransitionCancelled(T activity, boolean activityVisible);
+
+    int getSwipeUpDestinationAndLength(DeviceProfile dp, Context context, Rect outRect);
+
+    void onSwipeUpComplete(T activity);
+
+    void prepareRecentsUI(T activity, boolean activityVisible);
+
+    AnimatorPlaybackController createControllerForVisibleActivity(T activity);
+
+    AnimatorPlaybackController createControllerForHiddenActivity(T activity, int transitionLength);
+
+    ActivityInitListener createActivityInitListener(BiPredicate<T, Boolean> onInitListener);
+
+    void startRecents(Context context, Intent intent, AssistDataReceiver assistDataReceiver,
+            RecentsAnimationListener remoteAnimationListener);
+
+    @UiThread
+    @Nullable
+    RecentsView getVisibleRecentsView();
+
+    @UiThread
+    boolean switchToRecentsIfVisible();
+
+    class LauncherActivityControllerHelper implements ActivityControlHelper<Launcher> {
+
+        @Override
+        public LayoutListener createLayoutListener(Launcher activity) {
+            return new LauncherLayoutListener(activity);
+        }
+
+        @Override
+        public void onQuickstepGestureStarted(Launcher activity, boolean activityVisible) {
+            activity.onQuickstepGestureStarted(activityVisible);
+        }
+
+        @Override
+        public void onQuickInteractionStart(Launcher activity, boolean activityVisible) {
+            activity.getStateManager().goToState(FAST_OVERVIEW, activityVisible);
+        }
+
+        @Override
+        public void executeOnNextDraw(Launcher activity, TaskView targetView, Runnable action) {
+            ViewOnDrawExecutor executor = new ViewOnDrawExecutor() {
+                @Override
+                public void onViewDetachedFromWindow(View v) {
+                    if (!isCompleted()) {
+                        runAllTasks();
+                    }
+                }
+            };
+            executor.attachTo(activity, targetView, false /* waitForLoadAnimation */);
+            executor.execute(action);
+        }
+
+        @Override
+        public int getSwipeUpDestinationAndLength(DeviceProfile dp, Context context, Rect outRect) {
+            RecentsView.getPageRect(dp, context, outRect);
+            if (dp.isVerticalBarLayout()) {
+                Rect targetInsets = dp.getInsets();
+                int hotseatInset = dp.isSeascape() ? targetInsets.left : targetInsets.right;
+                return dp.hotseatBarSizePx + dp.hotseatBarSidePaddingPx + hotseatInset;
+            } else {
+                return dp.heightPx - outRect.bottom;
+            }
+        }
+
+        @Override
+        public void onTransitionCancelled(Launcher activity, boolean activityVisible) {
+            LauncherState startState = activity.getStateManager().getRestState();
+            activity.getStateManager().goToState(startState, activityVisible);
+        }
+
+        @Override
+        public void onSwipeUpComplete(Launcher activity) {
+            // Re apply state in case we did something funky during the transition.
+            activity.getStateManager().reapplyState();
+        }
+
+        @Override
+        public void prepareRecentsUI(Launcher activity, boolean activityVisible) {
+            LauncherState startState = activity.getStateManager().getState();
+            if (startState.disableRestore) {
+                startState = activity.getStateManager().getRestState();
+            }
+            activity.getStateManager().setRestState(startState);
+
+            if (!activityVisible) {
+                // Since the launcher is not visible, we can safely reset the scroll position.
+                // This ensures then the next swipe up to all-apps starts from scroll 0.
+                activity.getAppsView().reset(false /* animate */);
+                activity.getStateManager().goToState(OVERVIEW, false);
+
+                // Optimization, hide the all apps view to prevent layout while initializing
+                activity.getAppsView().getContentView().setVisibility(View.GONE);
+            }
+        }
+
+        @Override
+        public AnimatorPlaybackController createControllerForVisibleActivity(Launcher activity) {
+            DeviceProfile dp = activity.getDeviceProfile();
+            long accuracy = 2 * Math.max(dp.widthPx, dp.heightPx);
+            return activity.getStateManager().createAnimationToNewWorkspace(OVERVIEW, accuracy);
+        }
+
+        @Override
+        public AnimatorPlaybackController createControllerForHiddenActivity(
+                Launcher activity, int transitionLength) {
+            AllAppsTransitionController controller = activity.getAllAppsController();
+            AnimatorSet anim = new AnimatorSet();
+            if (activity.getDeviceProfile().isVerticalBarLayout()) {
+                // TODO:
+            } else {
+                float scrollRange = Math.max(controller.getShiftRange(), 1);
+                float progressDelta = (transitionLength / scrollRange);
+
+                float endProgress = OVERVIEW.getVerticalProgress(activity);
+                float startProgress = endProgress + progressDelta;
+                ObjectAnimator shiftAnim = ObjectAnimator.ofFloat(
+                        controller, ALL_APPS_PROGRESS, startProgress, endProgress);
+                shiftAnim.setInterpolator(LINEAR);
+                anim.play(shiftAnim);
+            }
+
+            // TODO: Link this animation to state animation, so that it is cancelled
+            // automatically on state change
+            anim.setDuration(transitionLength * 2);
+            return AnimatorPlaybackController.wrap(anim, transitionLength * 2);
+        }
+
+        @Override
+        public ActivityInitListener createActivityInitListener(
+                BiPredicate<Launcher, Boolean> onInitListener) {
+            return new LauncherInitListener(onInitListener);
+        }
+
+        @Override
+        public void startRecents(Context context, Intent intent,
+                AssistDataReceiver assistDataReceiver,
+                RecentsAnimationListener remoteAnimationListener) {
+            ActivityManagerWrapper.getInstance().startRecentsActivity(
+                    intent, assistDataReceiver, remoteAnimationListener, null, null);
+        }
+
+        @Nullable
+        @UiThread
+        private Launcher getVisibleLaucher() {
+            LauncherAppState app = LauncherAppState.getInstanceNoCreate();
+            if (app == null) {
+                return null;
+            }
+            Launcher launcher = (Launcher) app.getModel().getCallback();
+            return (launcher != null) && launcher.isStarted() && launcher.hasWindowFocus() ?
+                    launcher : null;
+        }
+
+        @Nullable
+        @Override
+        public RecentsView getVisibleRecentsView() {
+            Launcher launcher = getVisibleLaucher();
+            return launcher != null && launcher.isInState(OVERVIEW)
+                    ? launcher.getOverviewPanel() : null;
+        }
+
+        @Override
+        public boolean switchToRecentsIfVisible() {
+            Launcher launcher = getVisibleLaucher();
+            if (launcher != null) {
+                launcher.getStateManager().goToState(OVERVIEW);
+                return true;
+            }
+            return false;
+        }
+    }
+
+    class FallbackActivityControllerHelper implements ActivityControlHelper<RecentsActivity> {
+
+        @Override
+        public void onQuickstepGestureStarted(RecentsActivity activity, boolean activityVisible) {
+            // TODO:
+        }
+
+        @Override
+        public void onQuickInteractionStart(RecentsActivity activity, boolean activityVisible) {
+            // TODO:
+        }
+
+        @Override
+        public void executeOnNextDraw(RecentsActivity activity, TaskView targetView,
+                Runnable action) {
+            // TODO:
+            new Handler(Looper.getMainLooper()).post(action);
+        }
+
+        @Override
+        public void onTransitionCancelled(RecentsActivity activity, boolean activityVisible) {
+            // TODO:
+        }
+
+        @Override
+        public int getSwipeUpDestinationAndLength(DeviceProfile dp, Context context, Rect outRect) {
+            FallbackRecentsView.getCenterPageRect(dp, context, outRect);
+            if (dp.isVerticalBarLayout()) {
+                Rect targetInsets = dp.getInsets();
+                int hotseatInset = dp.isSeascape() ? targetInsets.left : targetInsets.right;
+                return dp.hotseatBarSizePx + dp.hotseatBarSidePaddingPx + hotseatInset;
+            } else {
+                return dp.heightPx - outRect.bottom;
+            }
+        }
+
+        @Override
+        public void onSwipeUpComplete(RecentsActivity activity) {
+            // TODO:
+        }
+
+        @Override
+        public void prepareRecentsUI(RecentsActivity activity, boolean activityVisible) {
+            // TODO:
+        }
+
+        @Override
+        public AnimatorPlaybackController createControllerForVisibleActivity(
+                RecentsActivity activity) {
+            DeviceProfile dp = activity.getDeviceProfile();
+            return createControllerForHiddenActivity(activity, Math.max(dp.widthPx, dp.heightPx));
+        }
+
+        @Override
+        public AnimatorPlaybackController createControllerForHiddenActivity(
+                RecentsActivity activity, int transitionLength) {
+            // We do not animate anything. Create a empty controller
+            AnimatorSet anim = new AnimatorSet();
+            return AnimatorPlaybackController.wrap(anim, transitionLength * 2);
+        }
+
+        @Override
+        public LayoutListener createLayoutListener(RecentsActivity activity) {
+            // We do not change anything as part of layout changes in fallback activity. Return a
+            // default layout listener.
+            return new LayoutListener() {
+                @Override
+                public void open() { }
+
+                @Override
+                public void setHandler(WindowTransformSwipeHandler handler) { }
+
+                @Override
+                public void finish() { }
+            };
+        }
+
+        @Override
+        public ActivityInitListener createActivityInitListener(
+                BiPredicate<RecentsActivity, Boolean> onInitListener) {
+            return new RecentsActivityTracker(onInitListener);
+        }
+
+        @Override
+        public void startRecents(Context context, Intent intent,
+                AssistDataReceiver assistDataReceiver,
+                final RecentsAnimationListener remoteAnimationListener) {
+            ActivityOptions options =
+                    ActivityOptionsCompat.makeRemoteAnimation(new RemoteAnimationAdapterCompat(
+                            new FallbackActivityOptions(remoteAnimationListener), 10000, 10000));
+            context.startActivity(intent, options.toBundle());
+        }
+
+        @Nullable
+        @Override
+        public RecentsView getVisibleRecentsView() {
+            RecentsActivity activity = RecentsActivityTracker.getCurrentActivity();
+            if (activity != null && activity.hasWindowFocus()) {
+                return activity.getOverviewPanel();
+            }
+            return null;
+        }
+
+        @Override
+        public boolean switchToRecentsIfVisible() {
+            return false;
+        }
+    }
+
+    interface LayoutListener {
+
+        void open();
+
+        void setHandler(WindowTransformSwipeHandler handler);
+
+        void finish();
+    }
+
+    interface ActivityInitListener {
+
+        void register();
+
+        void unregister();
+    }
+}

quickstep/src/com/android/quickstep/AnimatedFloat.java

@@ -77,6 +77,12 @@ public class AnimatedFloat {
         }
     }
 
+    public void finishAnimation() {
+        if (mValueAnimator != null && mValueAnimator.isRunning()) {
+            mValueAnimator.end();
+        }
+    }
+
     public ObjectAnimator getCurrentAnimation() {
         return mValueAnimator;
     }

quickstep/src/com/android/quickstep/BaseSwipeInteractionHandler.java

@@ -1,49 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.android.quickstep;
-
-import android.support.annotation.WorkerThread;
-
-import com.android.launcher3.states.InternalStateHandler;
-import com.android.quickstep.TouchConsumer.InteractionType;
-
-public abstract class BaseSwipeInteractionHandler extends InternalStateHandler {
-
-    protected Runnable mGestureEndCallback;
-
-    public void setGestureEndCallback(Runnable gestureEndCallback) {
-        mGestureEndCallback = gestureEndCallback;
-    }
-
-    public void reset() {}
-
-    @WorkerThread
-    public abstract void onGestureStarted();
-
-    @WorkerThread
-    public abstract void onGestureEnded(float endVelocity);
-
-    public abstract void updateInteractionType(@InteractionType int interactionType);
-
-    @WorkerThread
-    public abstract void onQuickScrubEnd();
-
-    @WorkerThread
-    public abstract void onQuickScrubProgress(float progress);
-
-    @WorkerThread
-    public abstract void updateDisplacement(float displacement);
-}

quickstep/src/com/android/quickstep/DeferredTouchConsumer.java

@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.quickstep;
+
+import android.annotation.TargetApi;
+import android.os.Build;
+import android.view.Choreographer;
+import android.view.MotionEvent;
+import android.view.VelocityTracker;
+
+/**
+ * A TouchConsumer which defers all events on the UIThread until the consumer is created.
+ */
+@TargetApi(Build.VERSION_CODES.P)
+public class DeferredTouchConsumer implements TouchConsumer {
+
+    private final VelocityTracker mVelocityTracker;
+    private final DeferredTouchProvider mTouchProvider;
+
+    private MotionEventQueue mMyQueue;
+    private TouchConsumer mTarget;
+
+    public DeferredTouchConsumer(DeferredTouchProvider touchProvider) {
+        mVelocityTracker = VelocityTracker.obtain();
+        mTouchProvider = touchProvider;
+    }
+
+    @Override
+    public void accept(MotionEvent event) {
+        mTarget.accept(event);
+    }
+
+    @Override
+    public void reset() {
+        mTarget.reset();
+    }
+
+    @Override
+    public void updateTouchTracking(int interactionType) {
+        mTarget.updateTouchTracking(interactionType);
+    }
+
+    @Override
+    public void onQuickScrubEnd() {
+        mTarget.onQuickScrubEnd();
+    }
+
+    @Override
+    public void onQuickScrubProgress(float progress) {
+        mTarget.onQuickScrubProgress(progress);
+    }
+
+    @Override
+    public void preProcessMotionEvent(MotionEvent ev) {
+        mVelocityTracker.addMovement(ev);
+    }
+
+    @Override
+    public Choreographer getIntrimChoreographer(MotionEventQueue queue) {
+        mMyQueue = queue;
+        return null;
+    }
+
+    @Override
+    public void deferInit() {
+        mTarget = mTouchProvider.createTouchConsumer(mVelocityTracker);
+        mTarget.getIntrimChoreographer(mMyQueue);
+    }
+
+    @Override
+    public boolean forceToLauncherConsumer() {
+        return mTarget.forceToLauncherConsumer();
+    }
+
+    @Override
+    public boolean deferNextEventToMainThread() {
+        // If our target is still null, defer the next target as well
+        TouchConsumer target = mTarget;
+        return target == null ? true : target.deferNextEventToMainThread();
+    }
+
+    public interface DeferredTouchProvider {
+
+        TouchConsumer createTouchConsumer(VelocityTracker tracker);
+    }
+}

quickstep/src/com/android/quickstep/FallbackActivityOptions.java

@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.quickstep;
+
+import android.graphics.Rect;
+import android.util.Log;
+
+import com.android.systemui.shared.recents.model.ThumbnailData;
+import com.android.systemui.shared.system.RecentsAnimationControllerCompat;
+import com.android.systemui.shared.system.RecentsAnimationListener;
+import com.android.systemui.shared.system.RemoteAnimationRunnerCompat;
+import com.android.systemui.shared.system.RemoteAnimationTargetCompat;
+import com.android.systemui.shared.system.WindowManagerWrapper;
+
+/**
+ * Temporary class to create activity options to emulate recents transition for fallback activtiy.
+ */
+public class FallbackActivityOptions implements RemoteAnimationRunnerCompat {
+
+    private final RecentsAnimationListener mListener;
+
+    public FallbackActivityOptions(RecentsAnimationListener listener) {
+        mListener = listener;
+    }
+
+    @Override
+    public void onAnimationStart(RemoteAnimationTargetCompat[] targetCompats,
+            Runnable runnable) {
+        DummyRecentsAnimationControllerCompat dummyRecentsAnim =
+                new DummyRecentsAnimationControllerCompat(runnable);
+
+        Rect insets = new Rect();
+        WindowManagerWrapper.getInstance().getStableInsets(insets);
+        mListener.onAnimationStart(dummyRecentsAnim, targetCompats, insets, null);
+    }
+
+    @Override
+    public void onAnimationCancelled() {
+        mListener.onAnimationCanceled();
+    }
+
+    private static class DummyRecentsAnimationControllerCompat
+            extends RecentsAnimationControllerCompat {
+
+        final Runnable mFinishCallback;
+
+        public DummyRecentsAnimationControllerCompat(Runnable finishCallback) {
+            mFinishCallback = finishCallback;
+        }
+
+        @Override
+        public ThumbnailData screenshotTask(int taskId) {
+            return new ThumbnailData();
+        }
+
+        @Override
+        public void setInputConsumerEnabled(boolean enabled) { }
+
+        @Override
+        public void setAnimationTargetsBehindSystemBars(boolean behindSystemBars) { }
+
+        @Override
+        public void finish(boolean toHome) {
+            if (toHome) {
+                mFinishCallback.run();
+            }
+        }
+    }
+}

quickstep/src/com/android/quickstep/FallbackRecentsView.java

@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.quickstep;
+
+import android.content.Context;
+import android.graphics.Rect;
+import android.util.AttributeSet;
+
+import com.android.launcher3.DeviceProfile;
+import com.android.launcher3.Insettable;
+import com.android.quickstep.views.RecentsView;
+
+public class FallbackRecentsView extends RecentsView<RecentsActivity> implements Insettable {
+
+    public FallbackRecentsView(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public FallbackRecentsView(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+        setOverviewStateEnabled(true);
+    }
+
+    @Override
+    protected void onAllTasksRemoved() {
+        mActivity.finish();
+    }
+
+    @Override
+    public void setInsets(Rect insets) {
+        mInsets.set(insets);
+        DeviceProfile dp = mActivity.getDeviceProfile();
+        Rect padding = getPadding(dp, getContext());
+        verticalCenter(padding, dp);
+        setPadding(padding.left, padding.top, padding.right, padding.bottom);
+    }
+
+    private static void verticalCenter(Rect padding, DeviceProfile dp) {
+        Rect insets = dp.getInsets();
+        int totalSpace = (padding.top + padding.bottom - insets.top - insets.bottom) / 2;
+        padding.top = insets.top + totalSpace;
+        padding.bottom = insets.bottom + totalSpace;
+    }
+
+    public static void getCenterPageRect(DeviceProfile grid, Context context, Rect outRect) {
+        Rect targetPadding = getPadding(grid, context);
+        verticalCenter(targetPadding, grid);
+        Rect insets = grid.getInsets();
+        outRect.set(
+                targetPadding.left + insets.left,
+                targetPadding.top + insets.top,
+                grid.widthPx - targetPadding.right - insets.right,
+                grid.heightPx - targetPadding.bottom - insets.bottom);
+    }
+}

quickstep/src/com/android/quickstep/InstantAppResolverImpl.java

@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.quickstep;
+
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.InstantAppInfo;
+import android.content.pm.PackageManager;
+import android.util.Log;
+
+import com.android.launcher3.AppInfo;
+import com.android.launcher3.util.InstantAppResolver;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Implementation of InstantAppResolver using platform APIs
+ */
+@SuppressWarnings("unused")
+public class InstantAppResolverImpl extends InstantAppResolver {
+
+    private static final String TAG = "InstantAppResolverImpl";
+    public static final String COMPONENT_CLASS_MARKER = "@instantapp";
+
+    private final PackageManager mPM;
+
+    public InstantAppResolverImpl(Context context)
+            throws NoSuchMethodException, ClassNotFoundException {
+        mPM = context.getPackageManager();
+    }
+
+    @Override
+    public boolean isInstantApp(ApplicationInfo info) {
+        return info.isInstantApp();
+    }
+
+    @Override
+    public boolean isInstantApp(AppInfo info) {
+        ComponentName cn = info.getTargetComponent();
+        return cn != null && cn.getClassName().equals(COMPONENT_CLASS_MARKER);
+    }
+
+    @Override
+    public List<ApplicationInfo> getInstantApps() {
+        try {
+            List<ApplicationInfo> result = new ArrayList<>();
+            for (InstantAppInfo iai : mPM.getInstantApps()) {
+                ApplicationInfo info = iai.getApplicationInfo();
+                if (info != null) {
+                    result.add(info);
+                }
+            }
+            return result;
+        } catch (SecurityException se) {
+            Log.w(TAG, "getInstantApps failed. Launcher may not be the default home app.", se);
+        } catch (Exception e) {
+            Log.e(TAG, "Error calling API: getInstantApps", e);
+        }
+        return super.getInstantApps();
+    }
+}

quickstep/src/com/android/quickstep/LauncherSearchIndexablesProvider.java

@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.quickstep;
+
+import android.annotation.TargetApi;
+import android.content.Intent;
+import android.content.pm.LauncherApps;
+import android.content.pm.ResolveInfo;
+import android.content.res.TypedArray;
+import android.content.res.XmlResourceParser;
+import android.database.Cursor;
+import android.database.MatrixCursor;
+import android.os.Build;
+import android.provider.SearchIndexablesContract.XmlResource;
+import android.provider.SearchIndexablesProvider;
+import android.util.Xml;
+
+import com.android.launcher3.R;
+import com.android.launcher3.graphics.IconShapeOverride;
+
+import org.xmlpull.v1.XmlPullParser;
+import org.xmlpull.v1.XmlPullParserException;
+
+import java.io.IOException;
+
+import static android.provider.SearchIndexablesContract.INDEXABLES_RAW_COLUMNS;
+import static android.provider.SearchIndexablesContract.INDEXABLES_XML_RES_COLUMNS;
+import static android.provider.SearchIndexablesContract.NON_INDEXABLES_KEYS_COLUMNS;
+
+@TargetApi(Build.VERSION_CODES.O)
+public class LauncherSearchIndexablesProvider extends SearchIndexablesProvider {
+    @Override
+    public boolean onCreate() {
+        return true;
+    }
+
+    @Override
+    public Cursor queryXmlResources(String[] strings) {
+        MatrixCursor cursor = new MatrixCursor(INDEXABLES_XML_RES_COLUMNS);
+        ResolveInfo settingsActivity = getContext().getPackageManager().resolveActivity(
+                new Intent(Intent.ACTION_APPLICATION_PREFERENCES)
+                        .setPackage(getContext().getPackageName()), 0);
+        cursor.newRow()
+                .add(XmlResource.COLUMN_XML_RESID, R.xml.indexable_launcher_prefs)
+                .add(XmlResource.COLUMN_INTENT_ACTION, Intent.ACTION_APPLICATION_PREFERENCES)
+                .add(XmlResource.COLUMN_INTENT_TARGET_PACKAGE, getContext().getPackageName())
+                .add(XmlResource.COLUMN_INTENT_TARGET_CLASS, settingsActivity.activityInfo.name);
+        return cursor;
+    }
+
+    @Override
+    public Cursor queryRawData(String[] projection) {
+        return new MatrixCursor(INDEXABLES_RAW_COLUMNS);
+    }
+
+    @Override
+    public Cursor queryNonIndexableKeys(String[] projection) {
+        MatrixCursor cursor = new MatrixCursor(NON_INDEXABLES_KEYS_COLUMNS);
+        if (!getContext().getSystemService(LauncherApps.class).hasShortcutHostPermission()) {
+            // We are not the current launcher. Hide all preferences
+            try (XmlResourceParser parser = getContext().getResources()
+                    .getXml(R.xml.indexable_launcher_prefs)) {
+                final int depth = parser.getDepth();
+                final int[] attrs = new int[] { android.R.attr.key };
+                int type;
+                while (((type = parser.next()) != XmlPullParser.END_TAG ||
+                        parser.getDepth() > depth) && type != XmlPullParser.END_DOCUMENT) {
+                    if (type == XmlPullParser.START_TAG) {
+                        TypedArray a = getContext().obtainStyledAttributes(
+                                Xml.asAttributeSet(parser), attrs);
+                        cursor.addRow(new String[] {a.getString(0)});
+                        a.recycle();
+                    }
+                }
+            } catch (IOException |XmlPullParserException e) {
+                throw new RuntimeException(e);
+            }
+        } else if (!IconShapeOverride.isSupported(getContext())) {
+            cursor.addRow(new String[] {IconShapeOverride.KEY_PREFERENCE});
+        }
+        return cursor;
+    }
+}

quickstep/src/com/android/quickstep/MotionEventQueue.java

@@ -19,9 +19,7 @@ import static android.view.MotionEvent.ACTION_CANCEL;
 import static android.view.MotionEvent.ACTION_MASK;
 import static android.view.MotionEvent.ACTION_MOVE;
 import static android.view.MotionEvent.ACTION_POINTER_INDEX_SHIFT;
-
 import static com.android.quickstep.TouchConsumer.INTERACTION_QUICK_SCRUB;
-import static com.android.quickstep.TouchConsumer.INTERACTION_QUICK_SWITCH;
 
 import android.annotation.TargetApi;
 import android.os.Build;
@@ -43,16 +41,18 @@ public class MotionEventQueue {
 
     private static final int ACTION_VIRTUAL = ACTION_MASK - 1;
 
-    private static final int ACTION_QUICK_SWITCH =
-            ACTION_VIRTUAL | (1 << ACTION_POINTER_INDEX_SHIFT);
     private static final int ACTION_QUICK_SCRUB_START =
-            ACTION_VIRTUAL | (2 << ACTION_POINTER_INDEX_SHIFT);
+            ACTION_VIRTUAL | (1 << ACTION_POINTER_INDEX_SHIFT);
     private static final int ACTION_QUICK_SCRUB_PROGRESS =
-            ACTION_VIRTUAL | (3 << ACTION_POINTER_INDEX_SHIFT);
+            ACTION_VIRTUAL | (2 << ACTION_POINTER_INDEX_SHIFT);
     private static final int ACTION_QUICK_SCRUB_END =
-            ACTION_VIRTUAL | (4 << ACTION_POINTER_INDEX_SHIFT);
+            ACTION_VIRTUAL | (3 << ACTION_POINTER_INDEX_SHIFT);
     private static final int ACTION_RESET =
+            ACTION_VIRTUAL | (4 << ACTION_POINTER_INDEX_SHIFT);
+    private static final int ACTION_DEFER_INIT =
             ACTION_VIRTUAL | (5 << ACTION_POINTER_INDEX_SHIFT);
+    private static final int ACTION_SHOW_OVERVIEW_FROM_ALT_TAB =
+            ACTION_VIRTUAL | (6 << ACTION_POINTER_INDEX_SHIFT);
 
     private final EventArray mEmptyArray = new EventArray();
     private final Object mExecutionLock = new Object();
@@ -76,10 +76,10 @@ public class MotionEventQueue {
     public MotionEventQueue(Choreographer choreographer, TouchConsumer consumer) {
         mMainChoreographer = choreographer;
         mConsumer = consumer;
-
         mCurrentChoreographer = mMainChoreographer;
         mCurrentRunnable = mMainFrameCallback;
-        setInterimChoreographerLocked(consumer.getIntrimChoreographer(this));
+
+        setInterimChoreographer(consumer.getIntrimChoreographer(this));
     }
 
     public void setInterimChoreographer(Choreographer choreographer) {
@@ -141,9 +141,6 @@ public class MotionEventQueue {
                 MotionEvent event = array.get(i);
                 if (event.getActionMasked() == ACTION_VIRTUAL) {
                     switch (event.getAction()) {
-                        case ACTION_QUICK_SWITCH:
-                            mConsumer.updateTouchTracking(INTERACTION_QUICK_SWITCH);
-                            break;
                         case ACTION_QUICK_SCRUB_START:
                             mConsumer.updateTouchTracking(INTERACTION_QUICK_SCRUB);
                             break;
@@ -156,6 +153,13 @@ public class MotionEventQueue {
                         case ACTION_RESET:
                             mConsumer.reset();
                             break;
+                        case ACTION_DEFER_INIT:
+                            mConsumer.deferInit();
+                            break;
+                        case ACTION_SHOW_OVERVIEW_FROM_ALT_TAB:
+                            mConsumer.onShowOverviewFromAltTab();
+                            mConsumer.updateTouchTracking(INTERACTION_QUICK_SCRUB);
+                            break;
                         default:
                             Log.e(TAG, "Invalid virtual event: " + event.getAction());
                     }
@@ -184,14 +188,14 @@ public class MotionEventQueue {
         queueNoPreProcess(MotionEvent.obtain(0, 0, action, progress, 0, 0));
     }
 
-    public void onQuickSwitch() {
-        queueVirtualAction(ACTION_QUICK_SWITCH, 0);
-    }
-
     public void onQuickScrubStart() {
         queueVirtualAction(ACTION_QUICK_SCRUB_START, 0);
     }
 
+    public void onOverviewShownFromAltTab() {
+        queueVirtualAction(ACTION_SHOW_OVERVIEW_FROM_ALT_TAB, 0);
+    }
+
     public void onQuickScrubProgress(float progress) {
         queueVirtualAction(ACTION_QUICK_SCRUB_PROGRESS, progress);
     }
@@ -204,6 +208,14 @@ public class MotionEventQueue {
         queueVirtualAction(ACTION_RESET, 0);
     }
 
+    public void deferInit() {
+        queueVirtualAction(ACTION_DEFER_INIT, 0);
+    }
+
+    public TouchConsumer getConsumer() {
+        return mConsumer;
+    }
+
     private static class EventArray extends ArrayList<MotionEvent> {
 
         public int lastEventAction = ACTION_CANCEL;

quickstep/src/com/android/quickstep/NavBarSwipeInteractionHandler.java

@@ -1,392 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.android.quickstep;
-
-
-import static com.android.quickstep.TouchConsumer.INTERACTION_NORMAL;
-import static com.android.quickstep.TouchConsumer.INTERACTION_QUICK_SCRUB;
-import static com.android.quickstep.TouchConsumer.INTERACTION_QUICK_SWITCH;
-import static com.android.quickstep.TouchConsumer.isInteractionQuick;
-
-import android.animation.Animator;
-import android.animation.ObjectAnimator;
-import android.animation.RectEvaluator;
-import android.annotation.TargetApi;
-import android.app.ActivityManager.RunningTaskInfo;
-import android.app.ActivityOptions;
-import android.content.Context;
-import android.content.res.Resources;
-import android.graphics.Bitmap;
-import android.graphics.Rect;
-import android.os.Build;
-import android.support.annotation.UiThread;
-import android.view.View;
-import android.view.ViewTreeObserver.OnPreDrawListener;
-
-import com.android.launcher3.AbstractFloatingView;
-import com.android.launcher3.DeviceProfile;
-import com.android.launcher3.Hotseat;
-import com.android.launcher3.Launcher;
-import com.android.launcher3.Launcher.OnResumeCallback;
-import com.android.launcher3.LauncherAppState;
-import com.android.launcher3.LauncherState;
-import com.android.launcher3.R;
-import com.android.launcher3.Utilities;
-import com.android.launcher3.allapps.AllAppsTransitionController;
-import com.android.launcher3.anim.AnimationSuccessListener;
-import com.android.launcher3.anim.Interpolators;
-import com.android.launcher3.util.Preconditions;
-import com.android.launcher3.util.TraceHelper;
-import com.android.quickstep.TouchConsumer.InteractionType;
-import com.android.systemui.shared.recents.model.RecentsTaskLoadPlan;
-import com.android.systemui.shared.recents.model.Task;
-import com.android.systemui.shared.system.ActivityManagerWrapper;
-import com.android.systemui.shared.system.WindowManagerWrapper;
-
-@TargetApi(Build.VERSION_CODES.O)
-public class NavBarSwipeInteractionHandler extends BaseSwipeInteractionHandler implements
-        OnResumeCallback {
-
-    private static final int STATE_LAUNCHER_READY = 1 << 0;
-    private static final int STATE_ACTIVITY_MULTIPLIER_COMPLETE = 1 << 4;
-    private static final int STATE_SCALED_SNAPSHOT_RECENTS = 1 << 5;
-    private static final int STATE_SCALED_SNAPSHOT_APP = 1 << 6;
-
-    private static final long MAX_SWIPE_DURATION = 200;
-    private static final long MIN_SWIPE_DURATION = 80;
-
-    // Ideal velocity for a smooth transition
-    private static final float PIXEL_PER_MS = 2f;
-
-    private static final float MIN_PROGRESS_FOR_OVERVIEW = 0.5f;
-
-    private final Rect mStableInsets = new Rect();
-    private final Rect mSourceRect = new Rect();
-    private final Rect mTargetRect = new Rect();
-    private final Rect mCurrentRect = new Rect();
-    private final RectEvaluator mRectEvaluator = new RectEvaluator(mCurrentRect);
-
-    // Shift in the range of [0, 1].
-    // 0 => preview snapShot is completely visible, and hotseat is completely translated down
-    // 1 => preview snapShot is completely aligned with the recents view and hotseat is completely
-    // visible.
-    private final AnimatedFloat mCurrentShift = new AnimatedFloat(this::updateFinalShift);
-
-    // Activity multiplier in the range of [0, 1]. When the activity becomes visible, this is
-    // animated to 1, so allow for a smooth transition.
-    private final AnimatedFloat mActivityMultiplier = new AnimatedFloat(this::updateFinalShift);
-
-    private final int mRunningTaskId;
-    private final Context mContext;
-
-    private final MultiStateCallback mStateCallback;
-
-    private Launcher mLauncher;
-    private SnapshotDragView mDragView;
-    private RecentsView mRecentsView;
-    private QuickScrubController mQuickScrubController;
-    private Hotseat mHotseat;
-
-    private boolean mWasLauncherAlreadyVisible;
-
-    private boolean mLauncherReady;
-    private boolean mTouchEndHandled;
-    private float mCurrentDisplacement;
-
-    private @InteractionType int mInteractionType;
-    private boolean mStartedQuickScrubFromHome;
-
-    private Bitmap mTaskSnapshot;
-
-    NavBarSwipeInteractionHandler(RunningTaskInfo runningTaskInfo, Context context,
-            @InteractionType int interactionType) {
-        mContext = context;
-        mInteractionType = interactionType;
-        mRunningTaskId = runningTaskInfo.id;
-        WindowManagerWrapper.getInstance().getStableInsets(mStableInsets);
-
-        DeviceProfile dp = LauncherAppState.getIDP(mContext).getDeviceProfile(mContext);
-        // TODO: If in multi window mode, dp = dp.getMultiWindowProfile()
-        dp = dp.copy(mContext);
-        // TODO: Use different insets for multi-window mode
-        dp.updateInsets(mStableInsets);
-        RecentsView.getPageRect(dp, mContext, mTargetRect);
-        mSourceRect.set(0, 0, dp.widthPx - mStableInsets.left - mStableInsets.right,
-                dp.heightPx - mStableInsets.top - mStableInsets.bottom);
-
-        // Build the state callback
-        mStateCallback = new MultiStateCallback();
-        mStateCallback.addCallback(STATE_LAUNCHER_READY, this::onLauncherReady);
-        mStateCallback.addCallback(STATE_SCALED_SNAPSHOT_APP, this::resumeLastTask);
-        mStateCallback.addCallback(
-                STATE_SCALED_SNAPSHOT_RECENTS | STATE_ACTIVITY_MULTIPLIER_COMPLETE,
-                this::onAnimationToLauncherComplete);
-        mStateCallback.addCallback(STATE_LAUNCHER_READY | STATE_SCALED_SNAPSHOT_APP,
-                this::cleanupLauncher);
-    }
-
-    private void onLauncherReady() {
-        mLauncherReady = true;
-        executeFrameUpdate();
-
-        long duration = Math.min(MAX_SWIPE_DURATION,
-                Math.max((long) (-mCurrentDisplacement / PIXEL_PER_MS), MIN_SWIPE_DURATION));
-        if (mCurrentShift.getCurrentAnimation() != null) {
-            ObjectAnimator anim = mCurrentShift.getCurrentAnimation();
-            long theirDuration = anim.getDuration() - anim.getCurrentPlayTime();
-
-            // TODO: Find a better heuristic
-            duration = (duration + theirDuration) / 2;
-        }
-        ObjectAnimator anim = mActivityMultiplier.animateToValue(1)
-                .setDuration(duration);
-        anim.addListener(new AnimationSuccessListener() {
-            @Override
-            public void onAnimationSuccess(Animator animator) {
-                mStateCallback.setState(STATE_ACTIVITY_MULTIPLIER_COMPLETE);
-            }
-        });
-        anim.start();
-    }
-
-    public void setTaskSnapshot(Bitmap taskSnapshot) {
-        mTaskSnapshot = taskSnapshot;
-    }
-
-    @Override
-    public void onLauncherResume() {
-        TraceHelper.partitionSection("TouchInt", "Launcher On resume");
-        mDragView.getViewTreeObserver().addOnPreDrawListener(new OnPreDrawListener() {
-            @Override
-            public boolean onPreDraw() {
-                mDragView.getViewTreeObserver().removeOnPreDrawListener(this);
-                mStateCallback.setState(STATE_LAUNCHER_READY);
-                TraceHelper.partitionSection("TouchInt", "Launcher drawn");
-                return true;
-            }
-        });
-    }
-
-    @Override
-    protected boolean init(Launcher launcher, boolean alreadyOnHome) {
-        launcher.setOnResumeCallback(this);
-        mLauncher = launcher;
-        mRecentsView = launcher.getOverviewPanel();
-        mRecentsView.showTask(mRunningTaskId);
-        mHotseat = mLauncher.getHotseat();
-        mWasLauncherAlreadyVisible = alreadyOnHome;
-
-        AbstractFloatingView.closeAllOpenViews(mLauncher, alreadyOnHome);
-        mLauncher.getStateManager().goToState(LauncherState.OVERVIEW, alreadyOnHome);
-
-        mDragView = new SnapshotDragView(mLauncher, mTaskSnapshot);
-        mLauncher.getDragLayer().addView(mDragView);
-        mDragView.setPivotX(0);
-        mDragView.setPivotY(0);
-
-        if (isInteractionQuick(mInteractionType)) {
-            updateUiForQuickScrub();
-        }
-
-        // Optimization
-        if (!mLauncher.getDeviceProfile().isVerticalBarLayout()) {
-            // All-apps search box is visible in vertical bar layout.
-            mLauncher.getAppsView().setVisibility(View.GONE);
-        }
-        TraceHelper.partitionSection("TouchInt", "Launcher on new intent");
-        return false;
-    }
-
-    public void updateInteractionType(@InteractionType int interactionType) {
-        Preconditions.assertUIThread();
-        if (mInteractionType != INTERACTION_NORMAL) {
-            throw new IllegalArgumentException(
-                    "Can't change interaction type from " + mInteractionType);
-        }
-        if (!isInteractionQuick(interactionType)) {
-            throw new IllegalArgumentException(
-                    "Can't change interaction type to " + interactionType);
-        }
-        mInteractionType = interactionType;
-
-        if (mLauncher != null) {
-            updateUiForQuickScrub();
-        }
-    }
-
-    private void updateUiForQuickScrub() {
-        mStartedQuickScrubFromHome = mWasLauncherAlreadyVisible;
-        mQuickScrubController = mRecentsView.getQuickScrubController();
-        mQuickScrubController.onQuickScrubStart(mStartedQuickScrubFromHome);
-        animateToProgress(1f, MAX_SWIPE_DURATION);
-        if (mStartedQuickScrubFromHome) {
-            mDragView.setVisibility(View.INVISIBLE);
-        }
-    }
-
-    @UiThread
-    public void updateDisplacement(float displacement) {
-        mCurrentDisplacement = displacement;
-        executeFrameUpdate();
-    }
-
-    private void executeFrameUpdate() {
-        if (mLauncherReady) {
-            final float displacement = -mCurrentDisplacement;
-            int hotseatSize = getHotseatSize();
-            float translation = Utilities.boundToRange(displacement, 0, hotseatSize);
-            float shift = hotseatSize == 0 ? 0 : translation / hotseatSize;
-            mCurrentShift.updateValue(shift);
-        }
-    }
-
-    @UiThread
-    private void updateFinalShift() {
-        if (!mLauncherReady || mStartedQuickScrubFromHome) {
-            return;
-        }
-
-        float shift = mCurrentShift.value * mActivityMultiplier.value;
-
-        AllAppsTransitionController controller = mLauncher.getAllAppsController();
-        float range = getHotseatSize() / controller.getShiftRange();
-        controller.setProgress(1 + (1 - shift) * range);
-
-        mRectEvaluator.evaluate(shift, mSourceRect, mTargetRect);
-
-        float scale = (float) mCurrentRect.width() / mSourceRect.width();
-        mDragView.setTranslationX(mCurrentRect.left - mStableInsets.left * scale * shift);
-        mDragView.setTranslationY(mCurrentRect.top - mStableInsets.top * scale * shift);
-        mDragView.setScaleX(scale);
-        mDragView.setScaleY(scale);
-        //  TODO: mDragView.getViewBounds().setClipLeft((int) (mStableInsets.left * shift));
-        mDragView.getViewBounds().setClipTop((int) (mStableInsets.top * shift));
-        // TODO: mDragView.getViewBounds().setClipRight((int) (mStableInsets.right * shift));
-        mDragView.getViewBounds().setClipBottom((int) (mStableInsets.bottom * shift));
-    }
-
-    private int getHotseatSize() {
-        return mLauncher.getDeviceProfile().isVerticalBarLayout()
-                ? mHotseat.getWidth() : mHotseat.getHeight();
-    }
-
-    @Override
-    public void onGestureStarted() { }
-
-    @UiThread
-    public void onGestureEnded(float endVelocity) {
-        if (mTouchEndHandled) {
-            return;
-        }
-        mTouchEndHandled = true;
-
-        Resources res = mContext.getResources();
-        float flingThreshold = res.getDimension(R.dimen.quickstep_fling_threshold_velocity);
-        boolean isFling = Math.abs(endVelocity) > flingThreshold;
-
-        long duration = MAX_SWIPE_DURATION;
-        final float endShift;
-        if (!isFling) {
-            endShift = mCurrentShift.value >= MIN_PROGRESS_FOR_OVERVIEW ? 1 : 0;
-        } else {
-            endShift = endVelocity < 0 ? 1 : 0;
-            float minFlingVelocity = res.getDimension(R.dimen.quickstep_fling_min_velocity);
-            if (Math.abs(endVelocity) > minFlingVelocity && mLauncherReady) {
-                float distanceToTravel = (endShift - mCurrentShift.value) * getHotseatSize();
-
-                // we want the page's snap velocity to approximately match the velocity at
-                // which the user flings, so we scale the duration by a value near to the
-                // derivative of the scroll interpolator at zero, ie. 5.
-                duration = 5 * Math.round(1000 * Math.abs(distanceToTravel / endVelocity));
-            }
-        }
-
-        animateToProgress(endShift, duration);
-    }
-
-    /** Animates to the given progress, where 0 is the current app and 1 is overview. */
-    private void animateToProgress(float progress, long duration) {
-        ObjectAnimator anim = mCurrentShift.animateToValue(progress).setDuration(duration);
-        anim.setInterpolator(Interpolators.SCROLL);
-        anim.addListener(new AnimationSuccessListener() {
-            @Override
-            public void onAnimationSuccess(Animator animator) {
-                mStateCallback.setState((Float.compare(mCurrentShift.value, 0) == 0)
-                        ? STATE_SCALED_SNAPSHOT_APP : STATE_SCALED_SNAPSHOT_RECENTS);
-            }
-        });
-        anim.start();
-    }
-
-    @UiThread
-    private void resumeLastTask() {
-        RecentsTaskLoadPlan loadPlan = RecentsModel.getInstance(mContext).getLastLoadPlan();
-        if (loadPlan != null) {
-            Task task = loadPlan.getTaskStack().findTaskWithId(mRunningTaskId);
-            if (task != null) {
-                ActivityOptions opts = ActivityOptions.makeCustomAnimation(mContext, 0, 0);
-                ActivityManagerWrapper.getInstance().startActivityFromRecentsAsync(task.key, opts,
-                        null, null);
-            }
-        }
-    }
-
-    public void reset() {
-        mCurrentShift.cancelAnimation();
-        if (mGestureEndCallback != null) {
-            mGestureEndCallback.run();
-        }
-    }
-
-    private void cleanupLauncher() {
-        reset();
-
-        // TODO: These should be done as part of ActivityOptions#OnAnimationStarted
-        mLauncher.getStateManager().reapplyState();
-        mLauncher.setOnResumeCallback(() -> mDragView.close(false));
-    }
-
-    private void onAnimationToLauncherComplete() {
-        reset();
-
-        mDragView.close(false);
-        View currentRecentsPage = mRecentsView.getPageAt(mRecentsView.getCurrentPage());
-        if (currentRecentsPage instanceof TaskView) {
-            ((TaskView) currentRecentsPage).animateIconToScale(1f);
-        }
-        if (mInteractionType == INTERACTION_QUICK_SWITCH) {
-            if (mQuickScrubController != null) {
-                mQuickScrubController.onQuickSwitch();
-            }
-        }
-    }
-
-    public void onQuickScrubEnd() {
-        if (mQuickScrubController != null) {
-            mQuickScrubController.onQuickScrubEnd();
-        } else {
-            // TODO:
-        }
-    }
-
-    public void onQuickScrubProgress(float progress) {
-        if (mQuickScrubController != null) {
-            mQuickScrubController.onQuickScrubProgress(progress);
-        } else {
-            // TODO:
-        }
-    }
-}

quickstep/src/com/android/quickstep/NormalizedIconLoader.java

@@ -16,19 +16,20 @@
 package com.android.quickstep;
 
 import android.annotation.TargetApi;
+import android.app.ActivityManager.TaskDescription;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.pm.ActivityInfo;
 import android.content.res.Resources;
 import android.graphics.drawable.Drawable;
 import android.os.Build;
-import android.os.Build.VERSION_CODES;
 import android.os.UserHandle;
 import android.util.LruCache;
 import android.util.SparseArray;
 
 import com.android.launcher3.FastBitmapDrawable;
 import com.android.launcher3.graphics.BitmapInfo;
+import com.android.launcher3.graphics.DrawableFactory;
 import com.android.launcher3.graphics.LauncherIcons;
 import com.android.systemui.shared.recents.model.IconLoader;
 import com.android.systemui.shared.recents.model.TaskKeyLruCache;
@@ -40,11 +41,13 @@ import com.android.systemui.shared.recents.model.TaskKeyLruCache;
 public class NormalizedIconLoader extends IconLoader {
 
     private final SparseArray<BitmapInfo> mDefaultIcons = new SparseArray<>();
+    private final DrawableFactory mDrawableFactory;
     private LauncherIcons mLauncherIcons;
 
     public NormalizedIconLoader(Context context, TaskKeyLruCache<Drawable> iconCache,
             LruCache<ComponentName, ActivityInfo> activityInfoCache) {
         super(context, iconCache, activityInfoCache);
+        mDrawableFactory = DrawableFactory.get(context);
     }
 
     @Override
@@ -53,7 +56,7 @@ public class NormalizedIconLoader extends IconLoader {
             BitmapInfo info = mDefaultIcons.get(userId);
             if (info == null) {
                 info = getBitmapInfo(Resources.getSystem()
-                        .getDrawable(android.R.drawable.sym_def_app_icon), userId);
+                        .getDrawable(android.R.drawable.sym_def_app_icon), userId, 0, false);
                 mDefaultIcons.put(userId, info);
             }
 
@@ -62,23 +65,31 @@ public class NormalizedIconLoader extends IconLoader {
     }
 
     @Override
-    protected Drawable createBadgedDrawable(Drawable drawable, int userId) {
-        return new FastBitmapDrawable(getBitmapInfo(drawable, userId));
+    protected Drawable createBadgedDrawable(Drawable drawable, int userId, TaskDescription desc) {
+        return new FastBitmapDrawable(getBitmapInfo(drawable, userId, desc.getPrimaryColor(),
+                false));
     }
 
-    private synchronized BitmapInfo getBitmapInfo(Drawable drawable, int userId) {
+    private synchronized BitmapInfo getBitmapInfo(Drawable drawable, int userId,
+            int primaryColor, boolean isInstantApp) {
         if (mLauncherIcons == null) {
             mLauncherIcons = LauncherIcons.obtain(mContext);
         }
 
+        mLauncherIcons.setWrapperBackgroundColor(primaryColor);
         // User version code O, so that the icon is always wrapped in an adaptive icon container.
         return mLauncherIcons.createBadgedIconBitmap(drawable, UserHandle.of(userId),
-                Build.VERSION_CODES.O);
+                Build.VERSION_CODES.O, isInstantApp);
     }
 
     @Override
-    protected Drawable getBadgedActivityIcon(ActivityInfo activityInfo, int userId) {
-        return createBadgedDrawable(
-                activityInfo.loadUnbadgedIcon(mContext.getPackageManager()), userId);
+    protected Drawable getBadgedActivityIcon(ActivityInfo activityInfo, int userId,
+            TaskDescription desc) {
+        BitmapInfo bitmapInfo = getBitmapInfo(
+                activityInfo.loadUnbadgedIcon(mContext.getPackageManager()),
+                userId,
+                desc.getPrimaryColor(),
+                activityInfo.applicationInfo.isInstantApp());
+        return mDrawableFactory.newIcon(bitmapInfo, activityInfo);
     }
 }

quickstep/src/com/android/quickstep/OtherActivityTouchConsumer.java

@@ -21,27 +21,20 @@ import static android.view.MotionEvent.ACTION_MOVE;
 import static android.view.MotionEvent.ACTION_POINTER_UP;
 import static android.view.MotionEvent.ACTION_UP;
 import static android.view.MotionEvent.INVALID_POINTER_ID;
-
-import static com.android.quickstep.RemoteRunnable.executeSafely;
 import static com.android.systemui.shared.system.NavigationBarCompat.HIT_TARGET_BACK;
-import static com.android.systemui.shared.system.NavigationBarCompat.HIT_TARGET_NONE;
+import static com.android.systemui.shared.system.NavigationBarCompat.HIT_TARGET_OVERVIEW;
 
+import android.annotation.TargetApi;
 import android.app.ActivityManager.RunningTaskInfo;
-import android.app.ActivityOptions;
 import android.content.Context;
 import android.content.ContextWrapper;
 import android.content.Intent;
-import android.graphics.Bitmap;
-import android.graphics.Bitmap.Config;
-import android.graphics.Color;
-import android.graphics.Point;
 import android.graphics.PointF;
 import android.graphics.Rect;
-import android.metrics.LogMaker;
+import android.os.Build;
 import android.os.Bundle;
 import android.os.Looper;
 import android.os.SystemClock;
-import android.util.Log;
 import android.view.Choreographer;
 import android.view.Display;
 import android.view.MotionEvent;
@@ -51,9 +44,7 @@ import android.view.ViewConfiguration;
 import android.view.WindowManager;
 
 import com.android.launcher3.MainThreadExecutor;
-import com.android.launcher3.Utilities;
 import com.android.launcher3.util.TraceHelper;
-import com.android.systemui.shared.recents.ISystemUiProxy;
 import com.android.systemui.shared.system.ActivityManagerWrapper;
 import com.android.systemui.shared.system.AssistDataReceiver;
 import com.android.systemui.shared.system.BackgroundExecutor;
@@ -63,87 +54,60 @@ import com.android.systemui.shared.system.RecentsAnimationListener;
 import com.android.systemui.shared.system.RemoteAnimationTargetCompat;
 import com.android.systemui.shared.system.WindowManagerWrapper;
 
+import java.util.Arrays;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
 
-class EventLogTags {
-    private EventLogTags() {
-    }  // don't instantiate
-
-    /** 524292 sysui_multi_action (content|4) */
-    public static final int SYSUI_MULTI_ACTION = 524292;
-
-    public static void writeSysuiMultiAction(Object[] content) {
-        android.util.EventLog.writeEvent(SYSUI_MULTI_ACTION, content);
-    }
-}
-
-class MetricsLogger {
-    private static MetricsLogger sMetricsLogger;
-
-    private static MetricsLogger getLogger() {
-        if (sMetricsLogger == null) {
-            sMetricsLogger = new MetricsLogger();
-        }
-        return sMetricsLogger;
-    }
-
-    protected void saveLog(Object[] rep) {
-        EventLogTags.writeSysuiMultiAction(rep);
-    }
-
-    public void write(LogMaker content) {
-        if (content.getType() == 0/*MetricsEvent.TYPE_UNKNOWN*/) {
-            content.setType(4/*MetricsEvent.TYPE_ACTION*/);
-        }
-        saveLog(content.serialize());
-    }
-}
-
 /**
  * Touch consumer for handling events originating from an activity other than Launcher
  */
+@TargetApi(Build.VERSION_CODES.P)
 public class OtherActivityTouchConsumer extends ContextWrapper implements TouchConsumer {
-    private static final String TAG = "ActivityTouchConsumer";
 
     private static final long LAUNCHER_DRAW_TIMEOUT_MS = 150;
+    private static final int[] DEFERRED_HIT_TARGETS = false
+            ? new int[] {HIT_TARGET_BACK, HIT_TARGET_OVERVIEW} : new int[] {HIT_TARGET_BACK};
 
     private final RunningTaskInfo mRunningTask;
     private final RecentsModel mRecentsModel;
     private final Intent mHomeIntent;
-    private final ISystemUiProxy mISystemUiProxy;
+    private final ActivityControlHelper mActivityControlHelper;
     private final MainThreadExecutor mMainThreadExecutor;
     private final Choreographer mBackgroundThreadChoreographer;
 
+    private final boolean mIsDeferredDownTarget;
     private final PointF mDownPos = new PointF();
     private final PointF mLastPos = new PointF();
     private int mActivePointerId = INVALID_POINTER_ID;
     private boolean mTouchThresholdCrossed;
     private int mTouchSlop;
     private float mStartDisplacement;
-    private BaseSwipeInteractionHandler mInteractionHandler;
+    private WindowTransformSwipeHandler mInteractionHandler;
     private int mDisplayRotation;
     private Rect mStableInsets = new Rect();
-    private @HitTarget int mDownHitTarget = HIT_TARGET_NONE;
 
     private VelocityTracker mVelocityTracker;
     private MotionEventQueue mEventQueue;
-
-    private final MetricsLogger mMetricsLogger = new MetricsLogger();
+    private boolean mIsGoingToHome;
 
     public OtherActivityTouchConsumer(Context base, RunningTaskInfo runningTaskInfo,
-            RecentsModel recentsModel, Intent homeIntent, ISystemUiProxy systemUiProxy,
+            RecentsModel recentsModel, Intent homeIntent, ActivityControlHelper activityControl,
             MainThreadExecutor mainThreadExecutor, Choreographer backgroundThreadChoreographer,
-            @HitTarget int downHitTarget) {
+            @HitTarget int downHitTarget, VelocityTracker velocityTracker) {
         super(base);
         mRunningTask = runningTaskInfo;
         mRecentsModel = recentsModel;
         mHomeIntent = homeIntent;
-        mVelocityTracker = VelocityTracker.obtain();
-        mISystemUiProxy = systemUiProxy;
+        mVelocityTracker = velocityTracker;
+        mActivityControlHelper = activityControl;
         mMainThreadExecutor = mainThreadExecutor;
         mBackgroundThreadChoreographer = backgroundThreadChoreographer;
-        mDownHitTarget = downHitTarget;
+        mIsDeferredDownTarget = Arrays.binarySearch(DEFERRED_HIT_TARGETS, downHitTarget) >= 0;
+    }
+
+    @Override
+    public void onShowOverviewFromAltTab() {
+        startTouchTrackingForWindowAnimation(SystemClock.uptimeMillis());
     }
 
     @Override
@@ -162,7 +126,7 @@ public class OtherActivityTouchConsumer extends ContextWrapper implements TouchC
 
                 // Start the window animation on down to give more time for launcher to draw if the
                 // user didn't start the gesture over the back button
-                if (!isUsingScreenShot() && mDownHitTarget != HIT_TARGET_BACK) {
+                if (!mIsDeferredDownTarget) {
                     startTouchTrackingForWindowAnimation(ev.getEventTime());
                 }
 
@@ -202,14 +166,11 @@ public class OtherActivityTouchConsumer extends ContextWrapper implements TouchC
                     if (mTouchThresholdCrossed) {
                         mStartDisplacement = Math.signum(displacement) * mTouchSlop;
 
-                        if (isUsingScreenShot()) {
-                            startTouchTrackingForScreenshotAnimation();
-                        } else if (mDownHitTarget == HIT_TARGET_BACK) {
+                        if (mIsDeferredDownTarget) {
                             // If we deferred starting the window animation on touch down, then
                             // start tracking now
                             startTouchTrackingForWindowAnimation(ev.getEventTime());
                         }
-
                         notifyGestureStarted();
                     }
                 } else if (mInteractionHandler != null) {
@@ -235,11 +196,6 @@ public class OtherActivityTouchConsumer extends ContextWrapper implements TouchC
         }
         // Notify the handler that the gesture has actually started
         mInteractionHandler.onGestureStarted();
-
-        // Notify the system that we have started tracking the event
-        if (mISystemUiProxy != null) {
-            executeSafely(mISystemUiProxy::onRecentsAnimationStarted);
-        }
     }
 
     private boolean isNavBarOnRight() {
@@ -250,69 +206,10 @@ public class OtherActivityTouchConsumer extends ContextWrapper implements TouchC
         return mDisplayRotation == Surface.ROTATION_270 && mStableInsets.left > 0;
     }
 
-    private boolean isUsingScreenShot() {
-        return Utilities.getPrefs(this).getBoolean("pref_use_screenshot_for_swipe_up", false);
-    }
-
-    /**
-     * Called when the gesture has started.
-     */
-    private void startTouchTrackingForScreenshotAnimation() {
-        // Create the shared handler
-        final NavBarSwipeInteractionHandler handler =
-                new NavBarSwipeInteractionHandler(mRunningTask, this, INTERACTION_NORMAL);
-
-        TraceHelper.partitionSection("TouchInt", "Thershold crossed ");
-
-        // Start the recents activity on a background thread
-        BackgroundExecutor.get().submit(() -> {
-            // Get the snap shot before
-            handler.setTaskSnapshot(getCurrentTaskSnapshot());
-
-            // Start the launcher activity with our custom handler
-            Intent homeIntent = handler.addToIntent(new Intent(mHomeIntent));
-            startActivity(homeIntent, ActivityOptions.makeCustomAnimation(this, 0, 0).toBundle());
-            TraceHelper.partitionSection("TouchInt", "Home started");
-        });
-
-        // Preload the plan
-        mRecentsModel.loadTasks(mRunningTask.id, null);
-        mInteractionHandler = handler;
-        mInteractionHandler.setGestureEndCallback(mEventQueue::reset);
-    }
-
-    private Bitmap getCurrentTaskSnapshot() {
-        TraceHelper.beginSection("TaskSnapshot");
-        // TODO: We are using some hardcoded layers for now, to best approximate the activity layers
-        Point displaySize = new Point();
-        Display display = getSystemService(WindowManager.class).getDefaultDisplay();
-        display.getRealSize(displaySize);
-        int rotation = display.getRotation();
-        // The rotation is backwards in landscape, so flip it.
-        if (rotation == Surface.ROTATION_270) {
-            rotation = Surface.ROTATION_90;
-        } else if (rotation == Surface.ROTATION_90) {
-            rotation = Surface.ROTATION_270;
-        }
-        try {
-            return mISystemUiProxy.screenshot(new Rect(), displaySize.x, displaySize.y, 0, 100000,
-                    false, rotation).toBitmap();
-        } catch (Exception e) {
-            Log.e(TAG, "Error capturing snapshot", e);
-
-            // Return a dummy bitmap
-            Bitmap bitmap = Bitmap.createBitmap(displaySize.x, displaySize.y, Config.RGB_565);
-            bitmap.eraseColor(Color.WHITE);
-            return bitmap;
-        } finally {
-            TraceHelper.endSection("TaskSnapshot");
-        }
-    }
-
     private void startTouchTrackingForWindowAnimation(long touchTimeMs) {
         // Create the shared handler
-        final WindowTransformSwipeHandler handler =
-                new WindowTransformSwipeHandler(mRunningTask, this);
+        final WindowTransformSwipeHandler handler = new WindowTransformSwipeHandler(
+                mRunningTask, this, touchTimeMs, mActivityControlHelper);
 
         // Preload the plan
         mRecentsModel.loadTasks(mRunningTask.id, null);
@@ -329,8 +226,7 @@ public class OtherActivityTouchConsumer extends ContextWrapper implements TouchC
         handler.initWhenReady();
 
         TraceHelper.beginSection("RecentsController");
-        Runnable startActivity = () -> ActivityManagerWrapper.getInstance()
-                .startRecentsActivity(mHomeIntent,
+        Runnable startActivity = () -> mActivityControlHelper.startRecents(this, mHomeIntent,
                 new AssistDataReceiver() {
                     @Override
                     public void onHandleAssistData(Bundle bundle) {
@@ -350,16 +246,6 @@ public class OtherActivityTouchConsumer extends ContextWrapper implements TouchC
                             TraceHelper.endSection("RecentsController", "Finishing no handler");
                             controller.finish(false /* toHome */);
                         }
-
-                        // Mimic ActivityMetricsLogger.logAppTransitionMultiEvents() logging for
-                        // "Recents" activity for app transition tests.
-                        final LogMaker builder = new LogMaker(761/*APP_TRANSITION*/);
-                        builder.setPackageName("com.android.systemui");
-                        builder.addTaggedData(871/*FIELD_CLASS_NAME*/,
-                                "com.android.systemui.recents.RecentsActivity");
-                        builder.addTaggedData(319/*APP_TRANSITION_DELAY_MS*/,
-                                SystemClock.uptimeMillis() - touchTimeMs);
-                        mMetricsLogger.write(builder);
                     }
 
                     public void onAnimationCanceled() {
@@ -369,7 +255,7 @@ public class OtherActivityTouchConsumer extends ContextWrapper implements TouchC
                             handler.onRecentsAnimationCanceled();
                         }
                     }
-                }, null, null);
+                });
 
         if (Looper.myLooper() != Looper.getMainLooper()) {
             startActivity.run();
@@ -398,7 +284,7 @@ public class OtherActivityTouchConsumer extends ContextWrapper implements TouchC
                     : isNavBarOnLeft() ? -mVelocityTracker.getXVelocity(mActivePointerId)
                             : mVelocityTracker.getYVelocity(mActivePointerId);
             mInteractionHandler.onGestureEnded(velocity);
-        } else if (!isUsingScreenShot()) {
+        } else {
             // Since we start touch tracking on DOWN, we may reach this state without actually
             // starting the gesture. In that case, just cleanup immediately.
             reset();
@@ -415,8 +301,9 @@ public class OtherActivityTouchConsumer extends ContextWrapper implements TouchC
     public void reset() {
         // Clean up the old interaction handler
         if (mInteractionHandler != null) {
-            final BaseSwipeInteractionHandler handler = mInteractionHandler;
+            final WindowTransformSwipeHandler handler = mInteractionHandler;
             mInteractionHandler = null;
+            mIsGoingToHome = handler.mIsGoingToHome;
             mMainThreadExecutor.execute(handler::reset);
         }
     }
@@ -424,24 +311,15 @@ public class OtherActivityTouchConsumer extends ContextWrapper implements TouchC
     @Override
     public void updateTouchTracking(int interactionType) {
         notifyGestureStarted();
-
-        if (isUsingScreenShot()) {
-            mMainThreadExecutor.execute(() -> {
-                if (mInteractionHandler != null) {
-                    mInteractionHandler.updateInteractionType(interactionType);
-                }
-            });
-        } else {
-            if (mInteractionHandler != null) {
-                mInteractionHandler.updateInteractionType(interactionType);
-            }
+        if (mInteractionHandler != null) {
+            mInteractionHandler.updateInteractionType(interactionType);
         }
     }
 
     @Override
     public Choreographer getIntrimChoreographer(MotionEventQueue queue) {
         mEventQueue = queue;
-        return isUsingScreenShot() ? null : mBackgroundThreadChoreographer;
+        return mBackgroundThreadChoreographer;
     }
 
     @Override
@@ -471,4 +349,15 @@ public class OtherActivityTouchConsumer extends ContextWrapper implements TouchC
            }
         }
     }
+
+    @Override
+    public boolean forceToLauncherConsumer() {
+        return mIsGoingToHome;
+    }
+
+    @Override
+    public boolean deferNextEventToMainThread() {
+        // TODO: Consider also check if the eventQueue is using mainThread of not.
+        return mInteractionHandler != null;
+    }
 }

quickstep/src/com/android/quickstep/OverviewCommandHelper.java

@@ -0,0 +1,369 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.quickstep;
+
+import static com.android.launcher3.LauncherState.OVERVIEW;
+
+import android.animation.Animator;
+import android.animation.ValueAnimator;
+import android.annotation.TargetApi;
+import android.app.ActivityManager.RecentTaskInfo;
+import android.app.ActivityManager.RunningTaskInfo;
+import android.app.ActivityOptions;
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.ResolveInfo;
+import android.graphics.Point;
+import android.graphics.Rect;
+import android.graphics.RectF;
+import android.os.Build;
+import android.os.Bundle;
+import android.os.SystemClock;
+import android.os.UserHandle;
+import android.support.annotation.UiThread;
+import android.support.annotation.WorkerThread;
+import android.util.SparseArray;
+import android.view.ViewConfiguration;
+
+import com.android.launcher3.AbstractFloatingView;
+import com.android.launcher3.Launcher;
+import com.android.launcher3.LauncherAppState;
+import com.android.launcher3.MainThreadExecutor;
+import com.android.launcher3.Utilities;
+import com.android.launcher3.anim.AnimationSuccessListener;
+import com.android.launcher3.anim.Interpolators;
+import com.android.launcher3.states.InternalStateHandler;
+import com.android.launcher3.util.TraceHelper;
+import com.android.quickstep.ActivityControlHelper.FallbackActivityControllerHelper;
+import com.android.quickstep.ActivityControlHelper.LauncherActivityControllerHelper;
+import com.android.quickstep.views.RecentsView;
+import com.android.quickstep.views.TaskView;
+import com.android.systemui.shared.recents.view.AppTransitionAnimationSpecCompat;
+import com.android.systemui.shared.recents.view.AppTransitionAnimationSpecsFuture;
+import com.android.systemui.shared.recents.view.RecentsTransition;
+import com.android.systemui.shared.system.ActivityManagerWrapper;
+import com.android.systemui.shared.system.AssistDataReceiver;
+import com.android.systemui.shared.system.BackgroundExecutor;
+import com.android.systemui.shared.system.RecentsAnimationControllerCompat;
+import com.android.systemui.shared.system.RecentsAnimationListener;
+import com.android.systemui.shared.system.RemoteAnimationTargetCompat;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.function.Consumer;
+
+/**
+ * Helper class to handle various atomic commands for switching between Overview.
+ */
+@TargetApi(Build.VERSION_CODES.P)
+public class OverviewCommandHelper extends InternalStateHandler {
+
+    private static final int RID_RESET_SWIPE_HANDLER = 0;
+    private static final int RID_CANCEL_CONTROLLER = 1;
+    private static final int RID_CANCEL_ZOOM_OUT_ANIMATION = 2;
+
+    private static final long RECENTS_LAUNCH_DURATION = 150;
+
+    private static final String TAG = "OverviewCommandHelper";
+    private static final boolean DEBUG_START_FALLBACK_ACTIVITY = false;
+
+    private final Context mContext;
+    private final ActivityManagerWrapper mAM;
+    private final RecentsModel mRecentsModel;
+    private final MainThreadExecutor mMainThreadExecutor;
+
+    public final Intent homeIntent;
+    public final ComponentName launcher;
+
+    private final SparseArray<Runnable> mCurrentCommandFinishRunnables = new SparseArray<>();
+    // Monotonically increasing command ids.
+    private int mCurrentCommandId = 0;
+
+    private long mLastToggleTime;
+    private WindowTransformSwipeHandler mWindowTransformSwipeHandler;
+
+    private final Point mWindowSize = new Point();
+    private final Rect mTaskTargetRect = new Rect();
+    private final RectF mTempTaskTargetRect = new RectF();
+
+    public OverviewCommandHelper(Context context) {
+        mContext = context;
+        mAM = ActivityManagerWrapper.getInstance();
+        mMainThreadExecutor = new MainThreadExecutor();
+        mRecentsModel = RecentsModel.getInstance(mContext);
+
+        homeIntent = new Intent(Intent.ACTION_MAIN)
+                .addCategory(Intent.CATEGORY_HOME)
+                .setPackage(context.getPackageName())
+                .setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+        ResolveInfo info = context.getPackageManager().resolveActivity(homeIntent, 0);
+
+        if (DEBUG_START_FALLBACK_ACTIVITY) {
+            launcher = new ComponentName(context, RecentsActivity.class);
+            homeIntent.addCategory(Intent.CATEGORY_DEFAULT)
+                    .removeCategory(Intent.CATEGORY_HOME);
+        } else {
+            launcher = new ComponentName(context.getPackageName(), info.activityInfo.name);
+        }
+
+        // Clear the packageName as system can fail to dedupe it b/64108432
+        homeIntent.setComponent(launcher).setPackage(null);
+    }
+
+    private void openRecents() {
+        Intent intent = addToIntent(new Intent(homeIntent));
+        mContext.startActivity(intent);
+        initWhenReady();
+    }
+
+    @UiThread
+    private void addFinishCommand(int requestId, int id, Runnable action) {
+        if (requestId < mCurrentCommandId) {
+            action.run();
+        } else {
+            mCurrentCommandFinishRunnables.put(id, action);
+        }
+    }
+
+    @UiThread
+    private void clearFinishCommand(int requestId, int id) {
+        if (requestId == mCurrentCommandId) {
+            mCurrentCommandFinishRunnables.remove(id);
+        }
+    }
+
+    @UiThread
+    private void initSwipeHandler(ActivityControlHelper helper, long time,
+            Consumer<WindowTransformSwipeHandler> onAnimationInitCallback) {
+        final int commandId = mCurrentCommandId;
+        RunningTaskInfo taskInfo = ActivityManagerWrapper.getInstance().getRunningTask();
+        final WindowTransformSwipeHandler handler =
+                new WindowTransformSwipeHandler(taskInfo, mContext, time, helper);
+
+        // Preload the plan
+        mRecentsModel.loadTasks(taskInfo.id, null);
+        mWindowTransformSwipeHandler = handler;
+
+        mTempTaskTargetRect.setEmpty();
+        handler.setGestureEndCallback(() -> {
+            if (mWindowTransformSwipeHandler == handler) {
+                mWindowTransformSwipeHandler = null;
+                mTempTaskTargetRect.setEmpty();
+            }
+            clearFinishCommand(commandId, RID_RESET_SWIPE_HANDLER);
+            clearFinishCommand(commandId, RID_CANCEL_CONTROLLER);
+        });
+        handler.initWhenReady();
+        addFinishCommand(commandId, RID_RESET_SWIPE_HANDLER, handler::reset);
+
+        TraceHelper.beginSection(TAG);
+        Runnable startActivity = () -> helper.startRecents(mContext, homeIntent,
+                new AssistDataReceiver() {
+                    @Override
+                    public void onHandleAssistData(Bundle bundle) {
+                        mRecentsModel.preloadAssistData(taskInfo.id, bundle);
+                    }
+                },
+                new RecentsAnimationListener() {
+                    public void onAnimationStart(
+                            RecentsAnimationControllerCompat controller,
+                            RemoteAnimationTargetCompat[] apps, Rect homeContentInsets,
+                            Rect minimizedHomeBounds) {
+                        if (mWindowTransformSwipeHandler == handler) {
+                            TraceHelper.partitionSection(TAG, "Received");
+                            handler.onRecentsAnimationStart(controller, apps, homeContentInsets,
+                                    minimizedHomeBounds);
+                            mTempTaskTargetRect.set(handler.getTargetRect(mWindowSize));
+
+                            mMainThreadExecutor.execute(() -> {
+                                addFinishCommand(commandId,
+                                        RID_CANCEL_CONTROLLER, () -> controller.finish(true));
+                                if (commandId == mCurrentCommandId) {
+                                    onAnimationInitCallback.accept(handler);
+                                }
+                            });
+                        } else {
+                            TraceHelper.endSection(TAG, "Finishing no handler");
+                            controller.finish(false /* toHome */);
+                        }
+                    }
+
+                    public void onAnimationCanceled() {
+                        TraceHelper.endSection(TAG, "Cancelled: " + handler);
+                        if (mWindowTransformSwipeHandler == handler) {
+                            handler.onRecentsAnimationCanceled();
+                        }
+                    }
+                });
+
+        // We should almost always get touch-town on background thread. This is an edge case
+        // when the background Choreographer has not yet initialized.
+        BackgroundExecutor.get().submit(startActivity);
+    }
+
+    @UiThread
+    private void startZoomOutAnim(final WindowTransformSwipeHandler handler) {
+        final int commandId = mCurrentCommandId;
+        ValueAnimator anim = ValueAnimator.ofInt(0, -handler.getTransitionLength());
+        anim.addUpdateListener((a) -> handler.updateDisplacement((Integer) a.getAnimatedValue()));
+        anim.addListener(new AnimationSuccessListener() {
+            @Override
+            public void onAnimationSuccess(Animator animator) {
+                handler.onGestureEnded(0);
+                clearFinishCommand(commandId, RID_CANCEL_ZOOM_OUT_ANIMATION);
+            }
+        });
+        handler.onGestureStarted();
+        anim.setDuration(RECENTS_LAUNCH_DURATION);
+        anim.setInterpolator(Interpolators.AGGRESSIVE_EASE);
+        anim.start();
+        addFinishCommand(commandId, RID_CANCEL_ZOOM_OUT_ANIMATION, anim::cancel);
+    }
+
+    public void onOverviewToggle() {
+        long time = SystemClock.elapsedRealtime();
+        mMainThreadExecutor.execute(() -> {
+            long elapsedTime = time - mLastToggleTime;
+            mLastToggleTime = time;
+
+            mCurrentCommandId++;
+            mTempTaskTargetRect.round(mTaskTargetRect);
+            boolean isQuickTap = elapsedTime < ViewConfiguration.getDoubleTapTimeout();
+            int runnableCount = mCurrentCommandFinishRunnables.size();
+            if (runnableCount > 0) {
+                for (int i = 0; i < runnableCount; i++) {
+                    mCurrentCommandFinishRunnables.valueAt(i).run();
+                }
+                mCurrentCommandFinishRunnables.clear();
+                isQuickTap = true;
+            }
+
+            ActivityControlHelper helper = getActivityControlHelper();
+            RecentsView recents = helper.getVisibleRecentsView();
+            if (recents != null) {
+                int childCount = recents.getChildCount();
+                if (childCount != 0) {
+                    ((TaskView) recents.getChildAt(childCount >= 2 ? 1 : 0)).launchTask(true);
+                }
+
+                // There are not enough tasks. Skip
+                return;
+            }
+
+            if (isQuickTap) {
+                // Focus last task. Start is on background thread so that all ActivityManager calls
+                // are serialized
+                BackgroundExecutor.get().submit(this::startLastTask);
+                return;
+            }
+            if (helper.switchToRecentsIfVisible()) {
+                return;
+            }
+
+            initSwipeHandler(helper, time, this::startZoomOutAnim);
+        });
+    }
+
+    public void onOverviewShown() {
+        getLauncher().runOnUiThread(() -> {
+                    if (isOverviewAlmostVisible()) {
+                        final RecentsView rv = getLauncher().getOverviewPanel();
+                        rv.snapToTaskAfterNext();
+                    } else {
+                        openRecents();
+                    }
+                }
+        );
+    }
+
+    public void onOverviewHidden() {
+        getLauncher().runOnUiThread(() -> {
+                    if (isOverviewAlmostVisible()) {
+                        final RecentsView rv = getLauncher().getOverviewPanel();
+                        rv.launchNextTask();
+                    }
+                }
+        );
+    }
+
+    @WorkerThread
+    private void startLastTask() {
+        // TODO: This should go through recents model.
+        List<RecentTaskInfo> tasks = mAM.getRecentTasks(2, UserHandle.myUserId());
+        if (tasks.size() > 1) {
+            RecentTaskInfo rti = tasks.get(1);
+
+            final ActivityOptions options;
+            if (!mTaskTargetRect.isEmpty()) {
+                final Rect targetRect = new Rect(mTaskTargetRect);
+                targetRect.offset(Utilities.isRtl(mContext.getResources())
+                        ? - mTaskTargetRect.width() : mTaskTargetRect.width(), 0);
+                final AppTransitionAnimationSpecCompat specCompat =
+                        new AppTransitionAnimationSpecCompat(rti.id, null, targetRect);
+                AppTransitionAnimationSpecsFuture specFuture =
+                        new AppTransitionAnimationSpecsFuture(mMainThreadExecutor.getHandler()) {
+
+                    @Override
+                    public List<AppTransitionAnimationSpecCompat> composeSpecs() {
+                        return Collections.singletonList(specCompat);
+                    }
+                };
+                options = RecentsTransition.createAspectScaleAnimation(mContext,
+                        mMainThreadExecutor.getHandler(), true /* scaleUp */,
+                        specFuture, () -> {});
+            } else {
+                options = ActivityOptions.makeBasic();
+            }
+            mAM.startActivityFromRecents(rti.id, options);
+        }
+    }
+
+    private boolean isOverviewAlmostVisible() {
+        if (clearReference()) {
+            return true;
+        }
+        if (!mAM.getRunningTask().topActivity.equals(launcher)) {
+            return false;
+        }
+        Launcher launcher = getLauncher();
+        return launcher != null && launcher.isStarted() && launcher.isInState(OVERVIEW);
+    }
+
+    private Launcher getLauncher() {
+        return (Launcher) LauncherAppState.getInstance(mContext).getModel().getCallback();
+    }
+
+    @Override
+    protected boolean init(Launcher launcher, boolean alreadyOnHome) {
+        AbstractFloatingView.closeAllOpenViews(launcher, alreadyOnHome);
+        launcher.getStateManager().goToState(OVERVIEW, alreadyOnHome);
+        clearReference();
+        return false;
+    }
+
+    public boolean isUsingFallbackActivity() {
+        return DEBUG_START_FALLBACK_ACTIVITY;
+    }
+
+    public ActivityControlHelper getActivityControlHelper() {
+        if (DEBUG_START_FALLBACK_ACTIVITY) {
+            return new FallbackActivityControllerHelper();
+        } else {
+            return new LauncherActivityControllerHelper();
+        }
+    }
+}

quickstep/src/com/android/quickstep/OverviewInteractionState.java

@@ -15,18 +15,28 @@
  */
 package com.android.quickstep;
 
+import static com.android.launcher3.Utilities.getPrefs;
+import static com.android.systemui.shared.system.NavigationBarCompat.FLAG_DISABLE_QUICK_SCRUB;
+import static com.android.systemui.shared.system.NavigationBarCompat.FLAG_DISABLE_SWIPE_UP;
 import static com.android.systemui.shared.system.NavigationBarCompat.FLAG_HIDE_BACK_BUTTON;
+import static com.android.systemui.shared.system.NavigationBarCompat.FLAG_SHOW_OVERVIEW_BUTTON;
 
 import android.content.Context;
+import android.content.SharedPreferences;
+import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
 import android.os.Handler;
 import android.os.Looper;
 import android.os.Message;
 import android.os.RemoteException;
+import android.support.annotation.WorkerThread;
 import android.util.Log;
 
+import com.android.launcher3.MainThreadExecutor;
 import com.android.launcher3.util.UiThreadHelper;
 import com.android.systemui.shared.recents.ISystemUiProxy;
 
+import java.util.concurrent.ExecutionException;
+
 /**
  * Sets overview interaction flags, such as:
  *
@@ -37,55 +47,109 @@ import com.android.systemui.shared.recents.ISystemUiProxy;
  *
  * @see com.android.systemui.shared.system.NavigationBarCompat.InteractionType and associated flags.
  */
-public class OverviewInteractionState {
+public class OverviewInteractionState implements OnSharedPreferenceChangeListener {
 
     private static final String TAG = "OverviewFlags";
-    private static final Handler sUiHandler = new Handler(Looper.getMainLooper()) {
-        @Override
-        public void handleMessage(Message msg) {
-            updateOverviewInteractionFlag((Context) msg.obj, msg.what, msg.arg1 == 1);
-        }
-    };
-    private static final Handler sBackgroundHandler = new Handler(
-            UiThreadHelper.getBackgroundLooper()) {
-        @Override
-        public void handleMessage(Message msg) {
-            ISystemUiProxy systemUiProxy = (ISystemUiProxy) msg.obj;
-            int flags = msg.what;
-            try {
-                systemUiProxy.setInteractionState(flags);
-            } catch (RemoteException e) {
-                Log.w(TAG, "Unable to update overview interaction flags", e);
+
+    // We do not need any synchronization for this variable as its only written on UI thread.
+    private static OverviewInteractionState INSTANCE;
+
+    public static OverviewInteractionState getInstance(final Context context) {
+        if (INSTANCE == null) {
+            if (Looper.myLooper() == Looper.getMainLooper()) {
+                INSTANCE = new OverviewInteractionState(context.getApplicationContext());
+            } else {
+                try {
+                    return new MainThreadExecutor().submit(
+                            () -> OverviewInteractionState.getInstance(context)).get();
+                } catch (InterruptedException|ExecutionException e) {
+                    throw new RuntimeException(e);
+                }
             }
         }
-    };
-
-    private static int sFlags;
-
-    public static void setBackButtonVisible(Context context, boolean visible) {
-        updateFlagOnUi(context, FLAG_HIDE_BACK_BUTTON, !visible);
+        return INSTANCE;
     }
 
-    private static void updateFlagOnUi(Context context, int flag, boolean enabled) {
-        sUiHandler.removeMessages(flag);
-        sUiHandler.sendMessage(sUiHandler.obtainMessage(flag, enabled ? 1 : 0, 0, context));
+    public static final String KEY_SWIPE_UP_ENABLED = "pref_enable_quickstep";
+
+    private static final int MSG_SET_PROXY = 200;
+    private static final int MSG_SET_BACK_BUTTON_VISIBLE = 201;
+    private static final int MSG_SET_SWIPE_UP_ENABLED = 202;
+
+    private final Handler mUiHandler;
+    private final Handler mBgHandler;
+
+    // These are updated on the background thread
+    private ISystemUiProxy mISystemUiProxy;
+    private boolean mBackButtonVisible = true;
+    private boolean mSwipeUpEnabled = true;
+
+    private OverviewInteractionState(Context context) {
+        mUiHandler = new Handler(this::handleUiMessage);
+        mBgHandler = new Handler(UiThreadHelper.getBackgroundLooper(), this::handleBgMessage);
+
+        SharedPreferences prefs = getPrefs(context);
+        prefs.registerOnSharedPreferenceChangeListener(this);
+        onSharedPreferenceChanged(prefs, KEY_SWIPE_UP_ENABLED);
     }
 
-    private static void updateOverviewInteractionFlag(Context context, int flag, boolean enabled) {
-        if (enabled) {
-            sFlags |= flag;
-        } else {
-            sFlags &= ~flag;
+    @Override
+    public void onSharedPreferenceChanged(SharedPreferences prefs, String s) {
+        if (KEY_SWIPE_UP_ENABLED.equals(s)) {
+            mUiHandler.removeMessages(MSG_SET_SWIPE_UP_ENABLED);
+            boolean swipeUpEnabled = prefs.getBoolean(s, true);
+            mUiHandler.obtainMessage(MSG_SET_SWIPE_UP_ENABLED,
+                    swipeUpEnabled ? 1 : 0, 0).sendToTarget();
         }
+    }
 
-        ISystemUiProxy systemUiProxy = RecentsModel.getInstance(context).getSystemUiProxy();
-        if (systemUiProxy == null) {
-            Log.w(TAG, "Unable to update overview interaction flags; not bound to service");
+    public void setBackButtonVisible(boolean visible) {
+        mUiHandler.removeMessages(MSG_SET_BACK_BUTTON_VISIBLE);
+        mUiHandler.obtainMessage(MSG_SET_BACK_BUTTON_VISIBLE, visible ? 1 : 0, 0)
+                .sendToTarget();
+    }
+
+    public void setSystemUiProxy(ISystemUiProxy proxy) {
+        mBgHandler.obtainMessage(MSG_SET_PROXY, proxy).sendToTarget();
+    }
+
+    private boolean handleUiMessage(Message msg) {
+        mBgHandler.obtainMessage(msg.what, msg.arg1, msg.arg2).sendToTarget();
+        return true;
+    }
+
+    private boolean handleBgMessage(Message msg) {
+        switch (msg.what) {
+            case MSG_SET_PROXY:
+                mISystemUiProxy = (ISystemUiProxy) msg.obj;
+                break;
+            case MSG_SET_BACK_BUTTON_VISIBLE:
+                mBackButtonVisible = msg.arg1 != 0;
+                break;
+            case MSG_SET_SWIPE_UP_ENABLED:
+                mSwipeUpEnabled = msg.arg1 != 0;
+                break;
+        }
+        applyFlags();
+        return true;
+    }
+
+    @WorkerThread
+    private void applyFlags() {
+        if (mISystemUiProxy == null) {
             return;
         }
-        // If we aren't already setting these flags, do so now on the background thread.
-        if (!sBackgroundHandler.hasMessages(sFlags)) {
-            sBackgroundHandler.sendMessage(sBackgroundHandler.obtainMessage(sFlags, systemUiProxy));
+
+        int flags;
+        if (mSwipeUpEnabled) {
+            flags = mBackButtonVisible ? 0 : FLAG_HIDE_BACK_BUTTON;
+        } else {
+            flags = FLAG_DISABLE_SWIPE_UP | FLAG_DISABLE_QUICK_SCRUB | FLAG_SHOW_OVERVIEW_BUTTON;
+        }
+        try {
+            mISystemUiProxy.setInteractionState(flags);
+        } catch (RemoteException e) {
+            Log.w(TAG, "Unable to update overview interaction flags", e);
         }
     }
 }

quickstep/src/com/android/quickstep/PendingAnimation.java

@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.quickstep;
+
+import android.animation.AnimatorSet;
+import android.annotation.TargetApi;
+import android.os.Build;
+
+import java.util.ArrayList;
+import java.util.function.Consumer;
+
+/**
+ * Utility class to keep track of a running animation.
+ *
+ * This class allows attaching end callbacks to an animation is intended to be used with
+ * {@link com.android.launcher3.anim.AnimatorPlaybackController}, since in that case
+ * AnimationListeners are not properly dispatched.
+ */
+@TargetApi(Build.VERSION_CODES.O)
+public class PendingAnimation {
+
+    private final ArrayList<Consumer<Boolean>> mEndListeners = new ArrayList<>();
+
+    public final AnimatorSet anim;
+
+    public PendingAnimation(AnimatorSet anim) {
+        this.anim = anim;
+    }
+
+    public void finish(boolean isSuccess) {
+        for (Consumer<Boolean> listeners : mEndListeners) {
+            listeners.accept(isSuccess);
+        }
+        mEndListeners.clear();
+    }
+
+    public void addEndListener(Consumer<Boolean> listener) {
+        mEndListeners.add(listener);
+    }
+}

quickstep/src/com/android/quickstep/QuickScrubController.java

@@ -19,13 +19,14 @@ package com.android.quickstep;
 import android.view.HapticFeedbackConstants;
 
 import com.android.launcher3.Alarm;
-import com.android.launcher3.Launcher;
+import com.android.launcher3.BaseActivity;
 import com.android.launcher3.OnAlarmListener;
 import com.android.launcher3.Utilities;
-import com.android.launcher3.userevent.nano.LauncherLogProto;
 import com.android.launcher3.userevent.nano.LauncherLogProto.Action.Touch;
-import com.android.launcher3.userevent.nano.LauncherLogProto.ControlType;
 import com.android.launcher3.userevent.nano.LauncherLogProto.ContainerType;
+import com.android.launcher3.userevent.nano.LauncherLogProto.ControlType;
+import com.android.quickstep.views.RecentsView;
+import com.android.quickstep.views.TaskView;
 
 /**
  * Responds to quick scrub callbacks to page through and launch recent tasks.
@@ -35,8 +36,7 @@ import com.android.launcher3.userevent.nano.LauncherLogProto.ContainerType;
  */
 public class QuickScrubController implements OnAlarmListener {
 
-    public static final int QUICK_SWITCH_START_DURATION = 133;
-    public static final int QUICK_SWITCH_SNAP_DURATION = 120;
+    public static final int QUICK_SCRUB_START_DURATION = 210;
 
     private static final boolean ENABLE_AUTO_ADVANCE = true;
     private static final int NUM_QUICK_SCRUB_SECTIONS = 3;
@@ -47,15 +47,16 @@ public class QuickScrubController implements OnAlarmListener {
 
     private final Alarm mAutoAdvanceAlarm;
     private final RecentsView mRecentsView;
-    private final Launcher mLauncher;
+    private final BaseActivity mActivity;
 
     private boolean mInQuickScrub;
     private int mQuickScrubSection;
-    private int mStartPage;
+    private boolean mStartedFromHome;
     private boolean mHasAlarmRun;
+    private boolean mFinishedTransitionToQuickScrub;
 
-    public QuickScrubController(Launcher launcher, RecentsView recentsView) {
-        mLauncher = launcher;
+    public QuickScrubController(BaseActivity activity, RecentsView recentsView) {
+        mActivity = activity;
         mRecentsView = recentsView;
         if (ENABLE_AUTO_ADVANCE) {
             mAutoAdvanceAlarm = new Alarm();
@@ -65,10 +66,13 @@ public class QuickScrubController implements OnAlarmListener {
 
     public void onQuickScrubStart(boolean startingFromHome) {
         mInQuickScrub = true;
-        mStartPage = startingFromHome ? 0 : mRecentsView.getFirstTaskIndex();
+        mStartedFromHome = startingFromHome;
         mQuickScrubSection = 0;
         mHasAlarmRun = false;
-        mLauncher.getUserEventDispatcher().resetActionDurationMillis();
+        mFinishedTransitionToQuickScrub = false;
+
+        snapToNextTaskIfAvailable();
+        mActivity.getUserEventDispatcher().resetActionDurationMillis();
     }
 
     public void onQuickScrubEnd() {
@@ -78,10 +82,12 @@ public class QuickScrubController implements OnAlarmListener {
         }
         int page = mRecentsView.getNextPage();
         Runnable launchTaskRunnable = () -> {
-            if (page < mRecentsView.getFirstTaskIndex()) {
-                mRecentsView.getPageAt(page).performClick();
+            TaskView taskView = ((TaskView) mRecentsView.getPageAt(page));
+            if (taskView != null) {
+                taskView.launchTask(true);
             } else {
-                ((TaskView) mRecentsView.getPageAt(page)).launchTask(true);
+                // Break out of quick scrub so user can interact with launcher.
+                mActivity.onBackPressed();
             }
         };
         int snapDuration = Math.abs(page - mRecentsView.getPageNearestToCenterOfScreen())
@@ -93,8 +99,8 @@ public class QuickScrubController implements OnAlarmListener {
             // No page move needed, just launch it
             launchTaskRunnable.run();
         }
-        mLauncher.getUserEventDispatcher().logActionOnControl(Touch.DRAGDROP,
-                ControlType.QUICK_SCRUB_BUTTON, null, mStartPage == 0 ?
+        mActivity.getUserEventDispatcher().logActionOnControl(Touch.DRAGDROP,
+                ControlType.QUICK_SCRUB_BUTTON, null, mStartedFromHome ?
                         ContainerType.WORKSPACE : ContainerType.APP);
     }
 
@@ -102,7 +108,9 @@ public class QuickScrubController implements OnAlarmListener {
         int quickScrubSection = Math.round(progress * NUM_QUICK_SCRUB_SECTIONS);
         if (quickScrubSection != mQuickScrubSection) {
             int pageToGoTo = mRecentsView.getNextPage() + quickScrubSection - mQuickScrubSection;
-            goToPageWithHaptic(pageToGoTo);
+            if (mFinishedTransitionToQuickScrub) {
+                goToPageWithHaptic(pageToGoTo);
+            }
             if (ENABLE_AUTO_ADVANCE) {
                 if (quickScrubSection == NUM_QUICK_SCRUB_SECTIONS || quickScrubSection == 0) {
                     mAutoAdvanceAlarm.setAlarm(mHasAlarmRun
@@ -115,39 +123,24 @@ public class QuickScrubController implements OnAlarmListener {
         }
     }
 
-    public void onQuickSwitch() {
-        for (int i = mRecentsView.getFirstTaskIndex(); i < mRecentsView.getPageCount(); i++) {
-            TaskView taskView = (TaskView) mRecentsView.getPageAt(i);
-            if (taskView.getTask().key.id != mRecentsView.getRunningTaskId()) {
-                Runnable launchTaskRunnable = () -> taskView.launchTask(true);
-                if (mRecentsView.snapToPage(i, QUICK_SWITCH_SNAP_DURATION)) {
-                    // Snap to the new page then launch it
-                    mRecentsView.setNextPageSwitchRunnable(launchTaskRunnable);
-                } else {
-                    // No need to move page, just launch task directly
-                    launchTaskRunnable.run();
-                }
-                break;
-            }
-        }
-        mLauncher.getUserEventDispatcher().logActionOnControl(Touch.FLING,
-                ControlType.QUICK_SCRUB_BUTTON, null, mStartPage == 0 ?
-                        ContainerType.WORKSPACE : ContainerType.APP);
+    public void onFinishedTransitionToQuickScrub() {
+        mFinishedTransitionToQuickScrub = true;
     }
 
-    public void snapToPageForCurrentQuickScrubSection() {
-        if (mInQuickScrub) {
-            goToPageWithHaptic(mRecentsView.getFirstTaskIndex() + mQuickScrubSection);
+    public void snapToNextTaskIfAvailable() {
+        if (mInQuickScrub && mRecentsView.getChildCount() > 0) {
+            int toPage = mStartedFromHome ? 0 : mRecentsView.getNextPage() + 1;
+            mRecentsView.snapToPage(toPage, QUICK_SCRUB_START_DURATION);
         }
     }
 
     private void goToPageWithHaptic(int pageToGoTo) {
-        pageToGoTo = Utilities.boundToRange(pageToGoTo, mStartPage, mRecentsView.getPageCount() - 1);
+        pageToGoTo = Utilities.boundToRange(pageToGoTo, 0, mRecentsView.getPageCount() - 1);
         if (pageToGoTo != mRecentsView.getNextPage()) {
             int duration = Math.abs(pageToGoTo - mRecentsView.getNextPage())
-                    * QUICKSCRUB_SNAP_DURATION_PER_PAGE;
+                            * QUICKSCRUB_SNAP_DURATION_PER_PAGE;
             mRecentsView.snapToPage(pageToGoTo, duration);
-            mRecentsView.performHapticFeedback(HapticFeedbackConstants.KEYBOARD_TAP,
+            mRecentsView.performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY,
                     HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING);
         }
     }
@@ -158,7 +151,7 @@ public class QuickScrubController implements OnAlarmListener {
         if (mQuickScrubSection == NUM_QUICK_SCRUB_SECTIONS
                 && currPage < mRecentsView.getPageCount() - 1) {
             goToPageWithHaptic(currPage + 1);
-        } else if (mQuickScrubSection == 0 && currPage > mStartPage) {
+        } else if (mQuickScrubSection == 0 && currPage > 0) {
             goToPageWithHaptic(currPage - 1);
         }
         mHasAlarmRun = true;

quickstep/src/com/android/quickstep/RecentsActivity.java

@@ -15,34 +15,88 @@
  */
 package com.android.quickstep;
 
-import android.app.ListActivity;
+import android.app.ActivityOptions;
 import android.os.Bundle;
-import android.os.UserHandle;
-import android.support.annotation.Nullable;
-import android.widget.ArrayAdapter;
+import android.view.View;
 
-import com.android.systemui.shared.recents.model.RecentsTaskLoadPlan;
-import com.android.systemui.shared.recents.model.RecentsTaskLoadPlan.PreloadOptions;
-import com.android.systemui.shared.recents.model.RecentsTaskLoader;
-import com.android.systemui.shared.recents.model.Task;
+import com.android.launcher3.BaseDraggingActivity;
+import com.android.launcher3.InvariantDeviceProfile;
+import com.android.launcher3.ItemInfo;
+import com.android.launcher3.LauncherAppState;
+import com.android.launcher3.R;
+import com.android.launcher3.badge.BadgeInfo;
+import com.android.launcher3.uioverrides.UiFactory;
+import com.android.launcher3.views.BaseDragLayer;
 
 /**
  * A simple activity to show the recently launched tasks
  */
-public class RecentsActivity extends ListActivity {
+public class RecentsActivity extends BaseDraggingActivity {
 
-    private ArrayAdapter<Task> mAdapter;
+    private RecentsRootView mRecentsRootView;
+    private FallbackRecentsView mFallbackRecentsView;
 
     @Override
-    protected void onCreate(@Nullable Bundle savedInstanceState) {
+    protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
-        RecentsTaskLoadPlan plan = new RecentsTaskLoadPlan(this);
-        plan.preloadPlan(new PreloadOptions(), new RecentsTaskLoader(this, 1, 1, 0), -1,
-                UserHandle.myUserId());
+        // In case we are reusing IDP, create a copy so that we dont conflict with Launcher
+        // activity.
+        LauncherAppState appState = LauncherAppState.getInstanceNoCreate();
+        setDeviceProfile(appState != null
+                ? appState.getInvariantDeviceProfile().getDeviceProfile(this).copy(this)
+                : new InvariantDeviceProfile(this).getDeviceProfile(this));
 
-        mAdapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1);
-        mAdapter.addAll(plan.getTaskStack().getTasks());
-        setListAdapter(mAdapter);
+        setContentView(R.layout.fallback_recents_activity);
+        mRecentsRootView = findViewById(R.id.drag_layer);
+        mFallbackRecentsView = findViewById(R.id.overview_panel);
+
+        RecentsActivityTracker.onRecentsActivityCreate(this);
+    }
+
+    @Override
+    public BaseDragLayer getDragLayer() {
+        return mRecentsRootView;
+    }
+
+    @Override
+    public View getRootView() {
+        return mRecentsRootView;
+    }
+
+    @Override
+    public <T extends View> T getOverviewPanel() {
+        return (T) mFallbackRecentsView;
+    }
+
+    @Override
+    public BadgeInfo getBadgeInfoForItem(ItemInfo info) {
+        return null;
+    }
+
+    @Override
+    public ActivityOptions getActivityLaunchOptions(View v, boolean useDefaultLaunchOptions) {
+        return null;
+    }
+
+    @Override
+    public void invalidateParent(ItemInfo info) { }
+
+    @Override
+    protected void onStart() {
+        super.onStart();
+        UiFactory.onStart(this);
+    }
+
+    @Override
+    public void onTrimMemory(int level) {
+        super.onTrimMemory(level);
+        UiFactory.onTrimMemory(this, level);
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        RecentsActivityTracker.onRecentsActivityDestroy(this);
     }
 }

quickstep/src/com/android/quickstep/RecentsActivityTracker.java

@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.quickstep;
+
+import android.annotation.TargetApi;
+import android.os.Build;
+
+import com.android.quickstep.ActivityControlHelper.ActivityInitListener;
+
+import java.lang.ref.WeakReference;
+import java.util.function.BiPredicate;
+
+/**
+ * Utility class to track create/destroy for RecentsActivity
+ */
+@TargetApi(Build.VERSION_CODES.P)
+public class RecentsActivityTracker implements ActivityInitListener {
+
+    private static final Object LOCK = new Object();
+    private static WeakReference<RecentsActivityTracker> sTracker = new WeakReference<>(null);
+    private static WeakReference<RecentsActivity> sCurrentActivity = new WeakReference<>(null);
+
+    private final BiPredicate<RecentsActivity, Boolean> mOnInitListener;
+
+    public RecentsActivityTracker(BiPredicate<RecentsActivity, Boolean> onInitListener) {
+        mOnInitListener = onInitListener;
+    }
+
+    @Override
+    public void register() {
+        synchronized (LOCK) {
+            sTracker = new WeakReference<>(this);
+        }
+    }
+
+    @Override
+    public void unregister() {
+        synchronized (LOCK) {
+            if (sTracker.get() == this) {
+                sTracker.clear();
+            }
+        }
+    }
+
+    public static void onRecentsActivityCreate(RecentsActivity activity) {
+        synchronized (LOCK) {
+            RecentsActivityTracker tracker = sTracker.get();
+            if (tracker != null && tracker.mOnInitListener.test(activity, false)) {
+                sTracker.clear();
+            }
+            sCurrentActivity = new WeakReference<>(activity);
+        }
+    }
+
+    public static void onRecentsActivityDestroy(RecentsActivity activity) {
+        synchronized (LOCK) {
+            if (sCurrentActivity.get() == activity) {
+                sCurrentActivity.clear();
+            }
+        }
+    }
+
+    public static RecentsActivity getCurrentActivity() {
+        synchronized (LOCK) {
+            return sCurrentActivity.get();
+        }
+    }
+}

quickstep/src/com/android/quickstep/RecentsModel.java

@@ -16,6 +16,8 @@
 package com.android.quickstep;
 
 import android.annotation.TargetApi;
+import android.app.ActivityManager;
+import android.content.ComponentCallbacks2;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.pm.ActivityInfo;
@@ -28,6 +30,7 @@ import android.os.UserHandle;
 import android.support.annotation.WorkerThread;
 import android.util.LruCache;
 import android.util.SparseArray;
+import android.view.accessibility.AccessibilityManager;
 
 import com.android.launcher3.MainThreadExecutor;
 import com.android.launcher3.R;
@@ -51,7 +54,6 @@ import java.util.function.Consumer;
  */
 @TargetApi(Build.VERSION_CODES.O)
 public class RecentsModel extends TaskStackChangeListener {
-
     // We do not need any synchronization for this variable as its only written on UI thread.
     private static RecentsModel INSTANCE;
 
@@ -83,10 +85,17 @@ public class RecentsModel extends TaskStackChangeListener {
     private int mTaskChangeId;
     private ISystemUiProxy mSystemUiProxy;
     private boolean mClearAssistCacheOnStackChange = true;
+    private final boolean mPreloadTasksInBackground;
+    private final AccessibilityManager mAccessibilityManager;
 
     private RecentsModel(Context context) {
         mContext = context;
 
+        ActivityManager activityManager =
+                (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
+        mPreloadTasksInBackground = !activityManager.isLowRamDevice();
+        mMainThreadExecutor = new MainThreadExecutor();
+
         Resources res = context.getResources();
         mRecentsTaskLoader = new RecentsTaskLoader(mContext,
                 res.getInteger(R.integer.config_recentsMaxThumbnailCacheSize),
@@ -100,12 +109,11 @@ public class RecentsModel extends TaskStackChangeListener {
             }
         };
         mRecentsTaskLoader.startLoader(mContext);
-
-        mMainThreadExecutor = new MainThreadExecutor();
         ActivityManagerWrapper.getInstance().registerTaskStackListener(this);
 
         mTaskChangeId = 1;
         loadTasks(-1, null);
+        mAccessibilityManager = context.getSystemService(AccessibilityManager.class);
     }
 
     public RecentsTaskLoader getRecentsTaskLoader() {
@@ -135,7 +143,7 @@ public class RecentsModel extends TaskStackChangeListener {
             // Preload the plan
             RecentsTaskLoadPlan loadPlan = new RecentsTaskLoadPlan(mContext);
             PreloadOptions opts = new PreloadOptions();
-            opts.loadTitles = false;
+            opts.loadTitles = mAccessibilityManager.isEnabled();
             loadPlan.preloadPlan(opts, mRecentsTaskLoader, taskId, UserHandle.myUserId());
             // Set the load plan on UI thread
             mMainThreadExecutor.execute(() -> {
@@ -162,6 +170,31 @@ public class RecentsModel extends TaskStackChangeListener {
         }
     }
 
+    @Override
+    public void onTaskStackChangedBackground() {
+        int userId = UserHandle.myUserId();
+        if (!mPreloadTasksInBackground || !checkCurrentUserId(userId, false /* debug */)) {
+            // TODO: Only register this for the current user
+            return;
+        }
+
+        // Preload a fixed number of task icons/thumbnails in the background
+        ActivityManager.RunningTaskInfo runningTaskInfo =
+                ActivityManagerWrapper.getInstance().getRunningTask();
+        RecentsTaskLoadPlan plan = new RecentsTaskLoadPlan(mContext);
+        RecentsTaskLoadPlan.Options launchOpts = new RecentsTaskLoadPlan.Options();
+        launchOpts.runningTaskId = runningTaskInfo != null ? runningTaskInfo.id : -1;
+        launchOpts.numVisibleTasks = 2;
+        launchOpts.numVisibleTaskThumbnails = 2;
+        launchOpts.onlyLoadForCache = true;
+        launchOpts.onlyLoadPausedActivities = true;
+        launchOpts.loadThumbnails = true;
+        PreloadOptions preloadOpts = new PreloadOptions();
+        preloadOpts.loadTitles = mAccessibilityManager.isEnabled();
+        plan.preloadPlan(preloadOpts, mRecentsTaskLoader, -1, userId);
+        mRecentsTaskLoader.loadTasks(plan, launchOpts);
+    }
+
     public boolean isLoadPlanValid(int resultId) {
         return mTaskChangeId == resultId;
     }
@@ -178,6 +211,19 @@ public class RecentsModel extends TaskStackChangeListener {
         return mSystemUiProxy;
     }
 
+    public void onStart() {
+        mRecentsTaskLoader.startLoader(mContext);
+        mRecentsTaskLoader.getHighResThumbnailLoader().setVisible(true);
+    }
+
+    public void onTrimMemory(int level) {
+        if (level == ComponentCallbacks2.TRIM_MEMORY_UI_HIDDEN) {
+            // We already stop the loader in UI_HIDDEN, so stop the high res loader as well
+            mRecentsTaskLoader.getHighResThumbnailLoader().setVisible(false);
+        }
+        mRecentsTaskLoader.onTrimMemory(level);
+    }
+
     @WorkerThread
     public void preloadAssistData(int taskId, Bundle data) {
         mMainThreadExecutor.execute(() -> {

quickstep/src/com/android/quickstep/RecentsRootView.java

@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.quickstep;
+
+import android.annotation.TargetApi;
+import android.content.Context;
+import android.graphics.Rect;
+import android.util.AttributeSet;
+
+import com.android.launcher3.BaseActivity;
+import com.android.launcher3.R;
+import com.android.launcher3.util.Themes;
+import com.android.launcher3.util.TouchController;
+import com.android.launcher3.views.BaseDragLayer;
+
+public class RecentsRootView extends BaseDragLayer<RecentsActivity> {
+
+    private final BaseActivity mActivity;
+
+    public RecentsRootView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        mActivity = BaseActivity.fromContext(context);
+        mControllers = new TouchController[0];
+    }
+
+    @TargetApi(23)
+    @Override
+    protected boolean fitSystemWindows(Rect insets) {
+        // Update device profile before notifying the children.
+        mActivity.getDeviceProfile().updateInsets(insets);
+        setInsets(insets);
+        return true; // I'll take it from here
+    }
+
+    @Override
+    public void setInsets(Rect insets) {
+        // If the insets haven't changed, this is a no-op. Avoid unnecessary layout caused by
+        // modifying child layout params.
+        if (!insets.equals(mInsets)) {
+            super.setInsets(insets);
+        }
+        setBackground(insets.top == 0 ? null
+                : Themes.getAttrDrawable(getContext(), R.attr.workspaceStatusBarScrim));
+    }
+}

quickstep/src/com/android/quickstep/RecentsView.java

@@ -1,564 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.quickstep;
-
-import static com.android.launcher3.LauncherState.NORMAL;
-import static com.android.launcher3.LauncherState.OVERVIEW;
-import static com.android.quickstep.TaskView.CURVE_FACTOR;
-import static com.android.quickstep.TaskView.CURVE_INTERPOLATOR;
-
-import android.animation.LayoutTransition;
-import android.content.Context;
-import android.graphics.Bitmap;
-import android.graphics.BitmapShader;
-import android.graphics.Canvas;
-import android.graphics.Matrix;
-import android.graphics.Paint;
-import android.graphics.PorterDuff.Mode;
-import android.graphics.PorterDuffXfermode;
-import android.graphics.Rect;
-import android.graphics.Shader;
-import android.graphics.Shader.TileMode;
-import android.graphics.drawable.BitmapDrawable;
-import android.graphics.drawable.Drawable;
-import android.util.AttributeSet;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.widget.FrameLayout;
-
-import com.android.launcher3.DeviceProfile;
-import com.android.launcher3.Insettable;
-import com.android.launcher3.Launcher;
-import com.android.launcher3.PagedView;
-import com.android.launcher3.R;
-import com.android.launcher3.Utilities;
-import com.android.launcher3.uioverrides.OverviewState;
-import com.android.launcher3.uioverrides.RecentsViewStateController;
-import com.android.systemui.shared.recents.model.RecentsTaskLoadPlan;
-import com.android.systemui.shared.recents.model.RecentsTaskLoader;
-import com.android.systemui.shared.recents.model.Task;
-import com.android.systemui.shared.recents.model.TaskStack;
-import com.android.systemui.shared.recents.model.ThumbnailData;
-import com.android.systemui.shared.system.ActivityManagerWrapper;
-import com.android.systemui.shared.system.TaskStackChangeListener;
-import com.android.systemui.shared.system.WindowManagerWrapper;
-
-import java.util.ArrayList;
-
-/**
- * A list of recent tasks.
- */
-public class RecentsView extends PagedView implements Insettable {
-
-    private static final Rect sTempStableInsets = new Rect();
-
-    public static final int SCROLL_TYPE_NONE = 0;
-    public static final int SCROLL_TYPE_TASK = 1;
-    public static final int SCROLL_TYPE_WORKSPACE = 2;
-
-    private final Launcher mLauncher;
-    private QuickScrubController mQuickScrubController;
-    private final ScrollState mScrollState = new ScrollState();
-    private boolean mOverviewStateEnabled;
-    private boolean mTaskStackListenerRegistered;
-    private LayoutTransition mLayoutTransition;
-    private Runnable mNextPageSwitchRunnable;
-
-    /**
-     * TODO: Call reloadIdNeeded in onTaskStackChanged.
-     */
-    private TaskStackChangeListener mTaskStackListener = new TaskStackChangeListener() {
-        @Override
-        public void onTaskSnapshotChanged(int taskId, ThumbnailData snapshot) {
-            for (int i = mFirstTaskIndex; i < getChildCount(); i++) {
-                final TaskView taskView = (TaskView) getChildAt(i);
-                if (taskView.getTask().key.id == taskId) {
-                    taskView.getThumbnail().setThumbnail(taskView.getTask(), snapshot);
-                    return;
-                }
-            }
-        }
-    };
-
-    private RecentsViewStateController mStateController;
-    private int mFirstTaskIndex;
-
-    private final RecentsModel mModel;
-    private int mLoadPlanId = -1;
-
-    // Only valid until the launcher state changes to NORMAL
-    private int mRunningTaskId = -1;
-
-    private Bitmap mScrim;
-    private Paint mFadePaint;
-    private Shader mFadeShader;
-    private Matrix mFadeMatrix;
-    private boolean mScrimOnLeft;
-
-    private boolean mFirstTaskIconScaledDown = false;
-
-    public RecentsView(Context context) {
-        this(context, null);
-    }
-
-    public RecentsView(Context context, AttributeSet attrs) {
-        this(context, attrs, 0);
-    }
-
-    public RecentsView(Context context, AttributeSet attrs, int defStyleAttr) {
-        super(context, attrs, defStyleAttr);
-        setPageSpacing(getResources().getDimensionPixelSize(R.dimen.recents_page_spacing));
-        enableFreeScroll(true);
-        setupLayoutTransition();
-        setClipToOutline(true);
-
-        mLauncher = Launcher.getLauncher(context);
-        mQuickScrubController = new QuickScrubController(mLauncher, this);
-        mModel = RecentsModel.getInstance(context);
-
-        mScrollState.isRtl = mIsRtl;
-    }
-
-    public TaskView updateThumbnail(int taskId, ThumbnailData thumbnailData) {
-        for (int i = mFirstTaskIndex; i < getChildCount(); i++) {
-            final TaskView taskView = (TaskView) getChildAt(i);
-            if (taskView.getTask().key.id == taskId) {
-                taskView.onTaskDataLoaded(taskView.getTask(), thumbnailData);
-                taskView.setAlpha(1);
-                return taskView;
-            }
-        }
-        return null;
-    }
-
-    private void setupLayoutTransition() {
-        // We want to show layout transitions when pages are deleted, to close the gap.
-        mLayoutTransition = new LayoutTransition();
-        mLayoutTransition.enableTransitionType(LayoutTransition.DISAPPEARING);
-        mLayoutTransition.enableTransitionType(LayoutTransition.CHANGE_DISAPPEARING);
-
-        mLayoutTransition.disableTransitionType(LayoutTransition.APPEARING);
-        mLayoutTransition.disableTransitionType(LayoutTransition.CHANGE_APPEARING);
-        setLayoutTransition(mLayoutTransition);
-    }
-
-    @Override
-    protected void onFinishInflate() {
-        super.onFinishInflate();
-        mFirstTaskIndex = getPageCount();
-    }
-
-    @Override
-    protected void onWindowVisibilityChanged(int visibility) {
-        super.onWindowVisibilityChanged(visibility);
-        updateTaskStackListenerState();
-    }
-
-    @Override
-    protected void onAttachedToWindow() {
-        super.onAttachedToWindow();
-        updateTaskStackListenerState();
-    }
-
-    @Override
-    protected void onDetachedFromWindow() {
-        super.onDetachedFromWindow();
-        updateTaskStackListenerState();
-    }
-
-    @Override
-    public void setInsets(Rect insets) {
-        mInsets.set(insets);
-        DeviceProfile dp = Launcher.getLauncher(getContext()).getDeviceProfile();
-        Rect padding = getPadding(dp, getContext());
-        FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) getLayoutParams();
-        lp.bottomMargin = padding.bottom;
-        setLayoutParams(lp);
-
-        setPadding(padding.left, padding.top, padding.right, 0);
-
-        if (dp.isVerticalBarLayout()) {
-            boolean wasScrimOnLeft = mScrimOnLeft;
-            mScrimOnLeft = dp.isSeascape();
-
-            if (mScrim == null || wasScrimOnLeft != mScrimOnLeft) {
-                Drawable scrim = getContext().getDrawable(mScrimOnLeft
-                        ? R.drawable.recents_horizontal_scrim_left
-                        : R.drawable.recents_horizontal_scrim_right);
-                if (scrim instanceof BitmapDrawable) {
-                    mScrim = ((BitmapDrawable) scrim).getBitmap();
-                    mFadePaint = new Paint();
-                    mFadePaint.setXfermode(new PorterDuffXfermode(Mode.DST_IN));
-                    mFadeShader = new BitmapShader(mScrim, TileMode.CLAMP, TileMode.REPEAT);
-                    mFadeMatrix = new Matrix();
-                } else {
-                    mScrim = null;
-                }
-            }
-        } else {
-            mScrim = null;
-            mFadePaint = null;
-            mFadeShader = null;
-            mFadeMatrix = null;
-        }
-    }
-
-    public int getFirstTaskIndex() {
-        return mFirstTaskIndex;
-    }
-
-    public boolean isTaskViewVisible(TaskView tv) {
-        // For now, just check if it's the active task or an adjacent task
-        return Math.abs(indexOfChild(tv) - getNextPage()) <= 1;
-    }
-
-    public TaskView getTaskView(int taskId) {
-        for (int i = getFirstTaskIndex(); i < getChildCount(); i++) {
-            TaskView tv = (TaskView) getChildAt(i);
-            if (tv.getTask().key.id == taskId) {
-                return tv;
-            }
-        }
-        return null;
-    }
-
-    public void setStateController(RecentsViewStateController stateController) {
-        mStateController = stateController;
-    }
-
-    public RecentsViewStateController getStateController() {
-        return mStateController;
-    }
-
-    public void setOverviewStateEnabled(boolean enabled) {
-        mOverviewStateEnabled = enabled;
-        updateTaskStackListenerState();
-    }
-
-    public void setNextPageSwitchRunnable(Runnable r) {
-        mNextPageSwitchRunnable = r;
-    }
-
-    @Override
-    protected void onPageEndTransition() {
-        super.onPageEndTransition();
-        if (mNextPageSwitchRunnable != null) {
-            mNextPageSwitchRunnable.run();
-            mNextPageSwitchRunnable = null;
-        }
-    }
-
-    private void applyLoadPlan(RecentsTaskLoadPlan loadPlan) {
-        final RecentsTaskLoader loader = mModel.getRecentsTaskLoader();
-        TaskStack stack = loadPlan != null ? loadPlan.getTaskStack() : null;
-        if (stack == null) {
-            removeAllViews();
-            return;
-        }
-
-        int oldChildCount = getChildCount();
-
-        // Ensure there are as many views as there are tasks in the stack (adding and trimming as
-        // necessary)
-        final LayoutInflater inflater = LayoutInflater.from(getContext());
-        final ArrayList<Task> tasks = new ArrayList<>(stack.getTasks());
-        setLayoutTransition(null);
-
-        final int requiredChildCount = tasks.size() + mFirstTaskIndex;
-        for (int i = getChildCount(); i < requiredChildCount; i++) {
-            final TaskView taskView = (TaskView) inflater.inflate(R.layout.task, this, false);
-            addView(taskView);
-        }
-        while (getChildCount() > requiredChildCount) {
-            final TaskView taskView = (TaskView) getChildAt(getChildCount() - 1);
-            removeView(taskView);
-            loader.unloadTaskData(taskView.getTask());
-        }
-        setLayoutTransition(mLayoutTransition);
-
-        // Rebind and reset all task views
-        for (int i = tasks.size() - 1; i >= 0; i--) {
-            final Task task = tasks.get(i);
-            final TaskView taskView = (TaskView) getChildAt(tasks.size() - i - 1 + mFirstTaskIndex);
-            taskView.bind(task);
-            taskView.resetVisualProperties();
-            loader.loadTaskData(task);
-        }
-        updateCurveProperties();
-        applyIconScale(false /* animate */);
-
-        if (oldChildCount != getChildCount()) {
-            mQuickScrubController.snapToPageForCurrentQuickScrubSection();
-        }
-    }
-
-    private void updateTaskStackListenerState() {
-        boolean registerStackListener = mOverviewStateEnabled && isAttachedToWindow()
-                && getWindowVisibility() == VISIBLE;
-        if (registerStackListener != mTaskStackListenerRegistered) {
-            if (registerStackListener) {
-                ActivityManagerWrapper.getInstance()
-                        .registerTaskStackListener(mTaskStackListener);
-                reloadIfNeeded();
-            } else {
-                ActivityManagerWrapper.getInstance()
-                        .unregisterTaskStackListener(mTaskStackListener);
-            }
-            mTaskStackListenerRegistered = registerStackListener;
-        }
-    }
-
-    private static Rect getPadding(DeviceProfile profile, Context context) {
-        WindowManagerWrapper.getInstance().getStableInsets(sTempStableInsets);
-        Rect padding = new Rect(profile.workspacePadding);
-
-        float taskWidth = profile.widthPx - sTempStableInsets.left - sTempStableInsets.right;
-        float taskHeight = profile.heightPx - sTempStableInsets.top - sTempStableInsets.bottom;
-
-        float overviewHeight, overviewWidth;
-        if (profile.isVerticalBarLayout()) {
-            // Use the same padding on both sides for symmetry.
-            float availableWidth = taskWidth - 2 * Math.max(padding.left, padding.right);
-            float availableHeight = profile.availableHeightPx - padding.top
-                    - sTempStableInsets.top - Math.max(padding.bottom,
-                    profile.heightPx * (1 - OverviewState.getVerticalProgress(profile, context)));
-            float scaledRatio = Math.min(availableWidth / taskWidth, availableHeight / taskHeight);
-            overviewHeight = taskHeight * scaledRatio;
-            overviewWidth = taskWidth * scaledRatio;
-
-        } else {
-            overviewHeight = profile.availableHeightPx - padding.top - padding.bottom
-                    - sTempStableInsets.top;
-            overviewWidth = taskWidth * overviewHeight / taskHeight;
-        }
-
-        padding.bottom = profile.availableHeightPx - padding.top - sTempStableInsets.top
-                - Math.round(overviewHeight);
-        padding.left = padding.right = (int) ((profile.availableWidthPx - overviewWidth) / 2);
-        return padding;
-    }
-
-    /**
-     * Sets the {@param outRect} to match the position of the first tile such that it is scaled
-     * down to match the 2nd taskView.
-     * @return returns the factor which determines the scaling factor for the second task.
-     */
-    public static float getScaledDownPageRect(DeviceProfile dp, Context context, Rect outRect) {
-        getPageRect(dp, context, outRect);
-
-        int pageSpacing = context.getResources()
-                .getDimensionPixelSize(R.dimen.recents_page_spacing);
-        float halfScreenWidth = dp.widthPx * 0.5f;
-        float halfPageWidth = outRect.width() * 0.5f;
-        float pageCenter = outRect.right + pageSpacing + halfPageWidth;
-        float distanceFromCenter = Math.abs(halfScreenWidth - pageCenter);
-        float distanceToReachEdge = halfScreenWidth + halfPageWidth + pageSpacing;
-        float linearInterpolation = Math.min(1, distanceFromCenter / distanceToReachEdge);
-
-        float scale = 1 - CURVE_INTERPOLATOR.getInterpolation(linearInterpolation) * CURVE_FACTOR;
-
-        int topMargin = context.getResources()
-                .getDimensionPixelSize(R.dimen.task_thumbnail_top_margin);
-        outRect.top -= topMargin;
-        Utilities.scaleRectAboutCenter(outRect, scale);
-        outRect.top += (int) (scale * topMargin);
-        return linearInterpolation;
-    }
-
-    public static void getPageRect(DeviceProfile grid, Context context, Rect outRect) {
-        Rect targetPadding = getPadding(grid, context);
-        Rect insets = grid.getInsets();
-        outRect.set(
-                targetPadding.left + insets.left,
-                targetPadding.top + insets.top,
-                grid.widthPx - targetPadding.right - insets.right,
-                grid.heightPx - targetPadding.bottom - insets.bottom);
-        outRect.top += context.getResources()
-                .getDimensionPixelSize(R.dimen.task_thumbnail_top_margin);
-    }
-
-    @Override
-    public void computeScroll() {
-        super.computeScroll();
-        updateCurveProperties();
-    }
-
-    /**
-     * Scales and adjusts translation of adjacent pages as if on a curved carousel.
-     */
-    public void updateCurveProperties() {
-        if (getPageCount() == 0 || getPageAt(0).getMeasuredWidth() == 0) {
-            return;
-        }
-        final int halfPageWidth = mScrollState.halfPageWidth = getNormalChildWidth() / 2;
-        mScrollState.lastScrollType = SCROLL_TYPE_NONE;
-        final int screenCenter = mInsets.left + getPaddingLeft() + getScrollX() + halfPageWidth;
-        final int halfScreenWidth = getMeasuredWidth() / 2;
-        final int pageSpacing = mPageSpacing;
-
-        final int pageCount = getPageCount();
-        for (int i = 0; i < pageCount; i++) {
-            View page = getPageAt(i);
-            int pageCenter = page.getLeft() + halfPageWidth;
-            mScrollState.distanceFromScreenCenter = screenCenter - pageCenter;
-            float distanceToReachEdge = halfScreenWidth + halfPageWidth + pageSpacing;
-            mScrollState.linearInterpolation = Math.min(1,
-                    Math.abs(mScrollState.distanceFromScreenCenter) / distanceToReachEdge);
-            mScrollState.lastScrollType = ((PageCallbacks) page).onPageScroll(mScrollState);
-        }
-    }
-
-    public void onTaskDismissed(TaskView taskView) {
-        ActivityManagerWrapper.getInstance().removeTask(taskView.getTask().key.id);
-        removeView(taskView);
-        if (getTaskCount() == 0) {
-            mLauncher.getStateManager().goToState(NORMAL);
-        }
-    }
-
-    public void reset() {
-        mRunningTaskId = -1;
-        setCurrentPage(0);
-    }
-
-    public int getTaskCount() {
-        return getChildCount() - mFirstTaskIndex;
-    }
-
-    public int getRunningTaskId() {
-        return mRunningTaskId;
-    }
-
-    /**
-     * Reloads the view if anything in recents changed.
-     */
-    public void reloadIfNeeded() {
-        if (!mModel.isLoadPlanValid(mLoadPlanId)) {
-            mLoadPlanId = mModel.loadTasks(mRunningTaskId, this::applyLoadPlan);
-        }
-    }
-
-    /**
-     * Ensures that the first task in the view represents {@param task} and reloads the view
-     * if needed. This allows the swipe-up gesture to assume that the first tile always
-     * corresponds to the correct task.
-     * All subsequent calls to reload will keep the task as the first item until {@link #reset()}
-     * is called.
-     * Also scrolls the view to this task
-     */
-    public void showTask(int runningTaskId) {
-        boolean needsReload = false;
-        if (getTaskCount() == 0) {
-            needsReload = true;
-            // Add an empty view for now
-            setLayoutTransition(null);
-            final TaskView taskView = (TaskView) LayoutInflater.from(getContext())
-                    .inflate(R.layout.task, this, false);
-            addView(taskView, mFirstTaskIndex);
-            setLayoutTransition(mLayoutTransition);
-        }
-        if (!needsReload) {
-            needsReload = !mModel.isLoadPlanValid(mLoadPlanId);
-        }
-        if (needsReload) {
-            mLoadPlanId = mModel.loadTasks(runningTaskId, this::applyLoadPlan);
-        }
-        mRunningTaskId = runningTaskId;
-        setCurrentPage(mFirstTaskIndex);
-        if (mCurrentPage >= mFirstTaskIndex) {
-            getPageAt(mCurrentPage).setAlpha(0);
-        }
-    }
-
-    public QuickScrubController getQuickScrubController() {
-        return mQuickScrubController;
-    }
-
-    public void setFirstTaskIconScaledDown(boolean isScaledDown, boolean animate) {
-        if (mFirstTaskIconScaledDown == isScaledDown) {
-            return;
-        }
-        mFirstTaskIconScaledDown = isScaledDown;
-        applyIconScale(animate);
-    }
-
-    private void applyIconScale(boolean animate) {
-        float scale = mFirstTaskIconScaledDown ? 0 : 1;
-        TaskView firstTask = (TaskView) getChildAt(mFirstTaskIndex);
-        if (firstTask != null) {
-            if (animate) {
-                firstTask.animateIconToScale(scale);
-            } else {
-                firstTask.setIconScale(scale);
-            }
-        }
-    }
-
-    @Override
-    public void draw(Canvas canvas) {
-        if (mScrim == null) {
-            super.draw(canvas);
-            return;
-        }
-
-        final int flags = Canvas.HAS_ALPHA_LAYER_SAVE_FLAG;
-
-        int length = mScrim.getWidth();
-        int height = getHeight();
-        int saveCount = canvas.getSaveCount();
-
-        int scrimLeft;
-        if (mScrimOnLeft) {
-            scrimLeft = getScrollX();
-        } else {
-            scrimLeft = getScrollX() + getWidth() - length;
-        }
-        canvas.saveLayer(scrimLeft, 0, scrimLeft + length, height, null, flags);
-        super.draw(canvas);
-
-        mFadeMatrix.setTranslate(scrimLeft, 0);
-        mFadeShader.setLocalMatrix(mFadeMatrix);
-        mFadePaint.setShader(mFadeShader);
-        canvas.drawRect(scrimLeft, 0, scrimLeft + length, height, mFadePaint);
-        canvas.restoreToCount(saveCount);
-    }
-
-    public interface PageCallbacks {
-
-        /**
-         * Updates the page UI based on scroll params and returns the type of scroll
-         * effect performed.
-         *
-         * @see #SCROLL_TYPE_NONE
-         * @see #SCROLL_TYPE_TASK
-         * @see #SCROLL_TYPE_WORKSPACE
-         */
-        int onPageScroll(ScrollState scrollState);
-    }
-
-    public static class ScrollState {
-
-        public boolean isRtl;
-        public int lastScrollType;
-
-        public int halfPageWidth;
-        public float distanceFromScreenCenter;
-        public float linearInterpolation;
-
-        public float prevPageExtraWidth;
-    }
-}

quickstep/src/com/android/quickstep/SimpleTaskView.java

@@ -1,52 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.android.quickstep;
-
-import android.content.Context;
-import android.graphics.Point;
-import android.util.AttributeSet;
-import android.view.View;
-import android.view.WindowManager;
-
-/**
- * A simple view which keeps its size proportional to the display size
- */
-public class SimpleTaskView extends View {
-
-    private static final Point sTempPoint = new Point();
-
-    public SimpleTaskView(Context context) {
-        super(context);
-    }
-
-    public SimpleTaskView(Context context, AttributeSet attrs) {
-        super(context, attrs);
-    }
-
-    public SimpleTaskView(Context context, AttributeSet attrs, int defStyleAttr) {
-        super(context, attrs, defStyleAttr);
-    }
-
-    @Override
-    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
-        int height = MeasureSpec.getSize(heightMeasureSpec);
-        getContext().getSystemService(WindowManager.class)
-                .getDefaultDisplay().getRealSize(sTempPoint);
-
-        int width = (int) ((float) height * sTempPoint.x / sTempPoint.y);
-        setMeasuredDimension(width, height);
-    }
-}

quickstep/src/com/android/quickstep/SnapshotDragView.java

@@ -1,92 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.android.quickstep;
-
-import android.graphics.Bitmap;
-import android.graphics.Canvas;
-import android.graphics.Rect;
-import android.view.MotionEvent;
-
-import com.android.launcher3.AbstractFloatingView;
-import com.android.launcher3.Insettable;
-import com.android.launcher3.Launcher;
-import com.android.systemui.shared.recents.view.AnimateableViewBounds;
-
-/**
- * Floating view which shows the task snapshot allowing it to be dragged and placed.
- */
-public class SnapshotDragView extends AbstractFloatingView implements Insettable {
-
-    private final Launcher mLauncher;
-    private final Bitmap mSnapshot;
-    private final AnimateableViewBounds mViewBounds;
-
-    public SnapshotDragView(Launcher launcher, Bitmap snapshot) {
-        super(launcher, null);
-        mLauncher = launcher;
-        mSnapshot = snapshot;
-        mViewBounds = new AnimateableViewBounds(this, 0);
-        setWillNotDraw(false);
-        setClipToOutline(true);
-        setOutlineProvider(mViewBounds);
-    }
-
-    AnimateableViewBounds getViewBounds() {
-        return mViewBounds;
-    }
-
-    @Override
-    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
-        if (mSnapshot != null) {
-            setMeasuredDimension(mSnapshot.getWidth(), mSnapshot.getHeight());
-        } else {
-            super.onMeasure(widthMeasureSpec, heightMeasureSpec);
-        }
-    }
-
-    @Override
-    public void setInsets(Rect insets) {
-
-    }
-
-    @Override
-    protected void onDraw(Canvas canvas) {
-        if (mSnapshot != null) {
-            canvas.drawBitmap(mSnapshot, 0, 0, null);
-        }
-    }
-
-    @Override
-    public boolean onControllerInterceptTouchEvent(MotionEvent ev) {
-        return false;
-    }
-
-    @Override
-    protected void handleClose(boolean animate) {
-        // We dont suupport animate.
-        mLauncher.getDragLayer().removeView(this);
-    }
-
-    @Override
-    public void logActionCommand(int command) {
-        // We should probably log the weather
-    }
-
-    @Override
-    protected boolean isOfType(int type) {
-        return (type & TYPE_QUICKSTEP_PREVIEW) != 0;
-    }
-}

quickstep/src/com/android/quickstep/TaskSystemShortcut.java

@@ -16,27 +16,41 @@
 
 package com.android.quickstep;
 
-import android.app.ActivityOptions;
 import android.content.ComponentName;
 import android.content.Intent;
+import android.graphics.Bitmap;
+import android.graphics.Color;
+import android.graphics.Rect;
 import android.os.Handler;
 import android.os.Looper;
 import android.os.RemoteException;
 import android.os.UserHandle;
 import android.util.Log;
 import android.view.View;
+import android.view.ViewTreeObserver.OnPreDrawListener;
 
+import com.android.launcher3.AbstractFloatingView;
+import com.android.launcher3.BaseDraggingActivity;
+import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.ItemInfo;
-import com.android.launcher3.Launcher;
 import com.android.launcher3.R;
 import com.android.launcher3.ShortcutInfo;
 import com.android.launcher3.popup.SystemShortcut;
 import com.android.launcher3.util.InstantAppResolver;
+import com.android.quickstep.views.RecentsView;
+import com.android.quickstep.views.TaskThumbnailView;
+import com.android.quickstep.views.TaskView;
 import com.android.systemui.shared.recents.ISystemUiProxy;
 import com.android.systemui.shared.recents.model.Task;
+import com.android.systemui.shared.recents.view.AppTransitionAnimationSpecCompat;
+import com.android.systemui.shared.recents.view.AppTransitionAnimationSpecsFuture;
+import com.android.systemui.shared.recents.view.RecentsTransition;
 import com.android.systemui.shared.system.ActivityManagerWrapper;
 import com.android.systemui.shared.system.ActivityOptionsCompat;
+import com.android.systemui.shared.system.WindowManagerWrapper;
 
+import java.util.Collections;
+import java.util.List;
 import java.util.function.Consumer;
 
 /**
@@ -58,11 +72,12 @@ public class TaskSystemShortcut<T extends SystemShortcut> extends SystemShortcut
     }
 
     @Override
-    public View.OnClickListener getOnClickListener(Launcher launcher, ItemInfo itemInfo) {
+    public View.OnClickListener getOnClickListener(
+            BaseDraggingActivity activity, ItemInfo itemInfo) {
         return null;
     }
 
-    public View.OnClickListener getOnClickListener(final Launcher launcher, final TaskView view) {
+    public View.OnClickListener getOnClickListener(BaseDraggingActivity activity, TaskView view) {
         Task task = view.getTask();
 
         ShortcutInfo dummyInfo = new ShortcutInfo();
@@ -70,14 +85,14 @@ public class TaskSystemShortcut<T extends SystemShortcut> extends SystemShortcut
         ComponentName component = task.getTopComponent();
         dummyInfo.intent.setComponent(component);
         dummyInfo.user = UserHandle.of(task.key.userId);
-        dummyInfo.title = TaskUtils.getTitle(launcher, task);
+        dummyInfo.title = TaskUtils.getTitle(activity, task);
 
-        return getOnClickListenerForTask(launcher, task, dummyInfo);
+        return getOnClickListenerForTask(activity, task, dummyInfo);
     }
 
-    protected View.OnClickListener getOnClickListenerForTask(final Launcher launcher,
-            final Task task, final ItemInfo dummyInfo) {
-        return mSystemShortcut.getOnClickListener(launcher, dummyInfo);
+    protected View.OnClickListener getOnClickListenerForTask(
+            BaseDraggingActivity activity, Task task, ItemInfo dummyInfo) {
+        return mSystemShortcut.getOnClickListener(activity, dummyInfo);
     }
 
     public static class AppInfo extends TaskSystemShortcut<SystemShortcut.AppInfo> {
@@ -86,9 +101,13 @@ public class TaskSystemShortcut<T extends SystemShortcut> extends SystemShortcut
         }
     }
 
-    public static class SplitScreen extends TaskSystemShortcut {
+    public static class SplitScreen extends TaskSystemShortcut implements OnPreDrawListener,
+            DeviceProfile.OnDeviceProfileChangeListener, View.OnLayoutChangeListener {
 
         private Handler mHandler;
+        private RecentsView mRecentsView;
+        private TaskView mTaskView;
+        private BaseDraggingActivity mActivity;
 
         public SplitScreen() {
             super(R.drawable.ic_split_screen, R.string.recent_task_option_split_screen);
@@ -96,30 +115,95 @@ public class TaskSystemShortcut<T extends SystemShortcut> extends SystemShortcut
         }
 
         @Override
-        public View.OnClickListener getOnClickListener(Launcher launcher, TaskView taskView) {
-            if (launcher.getDeviceProfile().isMultiWindowMode) {
+        public View.OnClickListener getOnClickListener(
+                BaseDraggingActivity activity, TaskView taskView) {
+            if (activity.getDeviceProfile().isMultiWindowMode) {
                 return null;
             }
             final Task task  = taskView.getTask();
+            final int taskId = task.key.id;
             if (!task.isDockable) {
                 return null;
             }
+            mActivity = activity;
+            mRecentsView = activity.getOverviewPanel();
+            mTaskView = taskView;
+            final TaskThumbnailView thumbnailView = taskView.getThumbnail();
             return (v -> {
-                final ActivityOptions options = ActivityOptionsCompat.makeSplitScreenOptions(true);
-                final Consumer<Boolean> resultCallback = success -> {
-                    if (success) {
-                        launcher.<RecentsView>getOverviewPanel().removeView(taskView);
-                    }
-                };
-                ActivityManagerWrapper.getInstance().startActivityFromRecentsAsync(
-                        task.key, options, resultCallback, mHandler);
+                AbstractFloatingView.closeOpenViews(activity, true,
+                        AbstractFloatingView.TYPE_ALL & ~AbstractFloatingView.TYPE_REBIND_SAFE);
 
-                // TODO improve transition; see:
-                // DockedFirstAnimationFrameEvent
-                // RecentsTransitionHelper#composeDockAnimationSpec
-                // WindowManagerWrapper#overridePendingAppTransitionMultiThumbFuture
+                if (ActivityManagerWrapper.getInstance().startActivityFromRecents(taskId,
+                        ActivityOptionsCompat.makeSplitScreenOptions(true))) {
+                    ISystemUiProxy sysUiProxy = RecentsModel.getInstance(activity).getSystemUiProxy();
+                    try {
+                        sysUiProxy.onSplitScreenInvoked();
+                    } catch (RemoteException e) {
+                        Log.w(TAG, "Failed to notify SysUI of split screen: ", e);
+                        return;
+                    }
+
+                    // Add a device profile change listener to kick off animating the side tasks
+                    // once we enter multiwindow mode and relayout
+                    activity.addOnDeviceProfileChangeListener(this);
+
+                    final Runnable animStartedListener = () -> {
+                        // Hide the task view and wait for the window to be resized
+                        // TODO: Consider animating in launcher and do an in-place start activity
+                        //       afterwards
+                        mRecentsView.addIgnoreResetTask(mTaskView);
+                        mTaskView.setAlpha(0f);
+                        mTaskView.getViewTreeObserver().addOnPreDrawListener(SplitScreen.this);
+                    };
+
+                    final int[] position = new int[2];
+                    thumbnailView.getLocationOnScreen(position);
+                    final int width = (int) (thumbnailView.getWidth() * taskView.getScaleX());
+                    final int height = (int) (thumbnailView.getHeight() * taskView.getScaleY());
+                    final Rect taskBounds = new Rect(position[0], position[1],
+                            position[0] + width, position[1] + height);
+
+                    Bitmap thumbnail = RecentsTransition.drawViewIntoHardwareBitmap(
+                            taskBounds.width(), taskBounds.height(), thumbnailView, 1f,
+                            Color.BLACK);
+                    AppTransitionAnimationSpecsFuture future =
+                            new AppTransitionAnimationSpecsFuture(mHandler) {
+                        @Override
+                        public List<AppTransitionAnimationSpecCompat> composeSpecs() {
+                            return Collections.singletonList(new AppTransitionAnimationSpecCompat(
+                                    taskId, thumbnail, taskBounds));
+                        }
+                    };
+                    WindowManagerWrapper.getInstance().overridePendingAppTransitionMultiThumbFuture(
+                            future, animStartedListener, mHandler, true /* scaleUp */);
+                }
             });
         }
+
+        @Override
+        public boolean onPreDraw() {
+            mTaskView.getViewTreeObserver().removeOnPreDrawListener(this);
+            WindowManagerWrapper.getInstance().endProlongedAnimations();
+            return true;
+        }
+
+        @Override
+        public void onDeviceProfileChanged(DeviceProfile dp) {
+            mActivity.removeOnDeviceProfileChangeListener(this);
+            if (dp.isMultiWindowMode) {
+                mTaskView.getRootView().addOnLayoutChangeListener(this);
+            }
+        }
+
+        @Override
+        public void onLayoutChange(View v, int l, int t, int r, int b,
+                int oldL, int oldT, int oldR, int oldB) {
+            mTaskView.getRootView().removeOnLayoutChangeListener(this);
+            mRecentsView.removeIgnoreResetTask(mTaskView);
+
+            // Start animating in the side pages once launcher has been resized
+            mRecentsView.dismissTask(mTaskView, false, false);
+        }
     }
 
     public static class Pin extends TaskSystemShortcut {
@@ -132,12 +216,17 @@ public class TaskSystemShortcut<T extends SystemShortcut> extends SystemShortcut
         }
 
         @Override
-        public View.OnClickListener getOnClickListener(Launcher launcher, TaskView taskView) {
-            ISystemUiProxy sysUiProxy = RecentsModel.getInstance(launcher).getSystemUiProxy();
+        public View.OnClickListener getOnClickListener(
+                BaseDraggingActivity activity, TaskView taskView) {
+            ISystemUiProxy sysUiProxy = RecentsModel.getInstance(activity).getSystemUiProxy();
             if (sysUiProxy == null) {
                 return null;
             }
-            if (!ActivityManagerWrapper.getInstance().isLockToAppEnabled()) {
+            if (!ActivityManagerWrapper.getInstance().isScreenPinningEnabled()) {
+                return null;
+            }
+            if (ActivityManagerWrapper.getInstance().isLockToAppActive()) {
+                // We shouldn't be able to pin while an app is locked.
                 return null;
             }
             return view -> {
@@ -161,11 +250,11 @@ public class TaskSystemShortcut<T extends SystemShortcut> extends SystemShortcut
         }
 
         @Override
-        protected View.OnClickListener getOnClickListenerForTask(Launcher launcher, Task task,
-                ItemInfo itemInfo) {
-            if (InstantAppResolver.newInstance(launcher).isInstantApp(launcher,
+        protected View.OnClickListener getOnClickListenerForTask(
+                BaseDraggingActivity activity, Task task, ItemInfo itemInfo) {
+            if (InstantAppResolver.newInstance(activity).isInstantApp(activity,
                         task.getTopComponent().getPackageName())) {
-                return mSystemShortcut.createOnClickListener(launcher, itemInfo);
+                return mSystemShortcut.createOnClickListener(activity, itemInfo);
             }
             return null;
         }

quickstep/src/com/android/quickstep/TaskUtils.java

@@ -16,12 +16,12 @@
 
 package com.android.quickstep;
 
+import android.content.Context;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageManager;
 import android.os.UserHandle;
 import android.util.Log;
 
-import com.android.launcher3.Launcher;
 import com.android.launcher3.compat.LauncherAppsCompat;
 import com.android.launcher3.compat.UserManagerCompat;
 import com.android.systemui.shared.recents.model.Task;
@@ -34,10 +34,10 @@ public class TaskUtils {
 
     private static final String TAG = "TaskUtils";
 
-    public static CharSequence getTitle(Launcher launcher, Task task) {
-        LauncherAppsCompat launcherAppsCompat = LauncherAppsCompat.getInstance(launcher);
-        UserManagerCompat userManagerCompat = UserManagerCompat.getInstance(launcher);
-        PackageManager packageManager = launcher.getPackageManager();
+    public static CharSequence getTitle(Context context, Task task) {
+        LauncherAppsCompat launcherAppsCompat = LauncherAppsCompat.getInstance(context);
+        UserManagerCompat userManagerCompat = UserManagerCompat.getInstance(context);
+        PackageManager packageManager = context.getPackageManager();
         UserHandle user = UserHandle.of(task.key.userId);
         ApplicationInfo applicationInfo = launcherAppsCompat.getApplicationInfo(
             task.getTopComponent().getPackageName(), 0, user);

quickstep/src/com/android/quickstep/TouchConsumer.java

@@ -21,8 +21,6 @@ import android.support.annotation.IntDef;
 import android.view.Choreographer;
 import android.view.MotionEvent;
 
-import com.android.systemui.shared.system.NavigationBarCompat.HitTarget;
-
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.util.function.Consumer;
@@ -31,21 +29,14 @@ import java.util.function.Consumer;
 @FunctionalInterface
 public interface TouchConsumer extends Consumer<MotionEvent> {
 
-    static boolean isInteractionQuick(@InteractionType int interactionType) {
-        return interactionType == INTERACTION_QUICK_SCRUB ||
-                interactionType == INTERACTION_QUICK_SWITCH;
-    }
-
     @IntDef(flag = true, value = {
             INTERACTION_NORMAL,
-            INTERACTION_QUICK_SWITCH,
             INTERACTION_QUICK_SCRUB
     })
     @Retention(RetentionPolicy.SOURCE)
     @interface InteractionType {}
     int INTERACTION_NORMAL = 0;
-    int INTERACTION_QUICK_SWITCH = 1;
-    int INTERACTION_QUICK_SCRUB = 2;
+    int INTERACTION_QUICK_SCRUB = 1;
 
     default void reset() { }
 
@@ -64,4 +55,16 @@ public interface TouchConsumer extends Consumer<MotionEvent> {
     default Choreographer getIntrimChoreographer(MotionEventQueue queue) {
         return null;
     }
+
+    default void deferInit() { }
+
+    default boolean deferNextEventToMainThread() {
+        return false;
+    }
+
+    default boolean forceToLauncherConsumer() {
+        return false;
+    }
+
+    default void onShowOverviewFromAltTab() {}
 }

quickstep/src/com/android/quickstep/TouchInteractionService.java

@@ -21,15 +21,14 @@ import static android.view.MotionEvent.ACTION_MOVE;
 import static android.view.MotionEvent.ACTION_POINTER_DOWN;
 import static android.view.MotionEvent.ACTION_POINTER_UP;
 import static android.view.MotionEvent.ACTION_UP;
-import static com.android.launcher3.LauncherState.OVERVIEW;
-import static com.android.quickstep.QuickScrubController.QUICK_SWITCH_START_DURATION;
+import static com.android.launcher3.LauncherState.FAST_OVERVIEW;
+import static com.android.launcher3.LauncherState.NORMAL;
+import static com.android.systemui.shared.system.NavigationBarCompat.HIT_TARGET_NONE;
 
 import android.annotation.TargetApi;
 import android.app.ActivityManager.RunningTaskInfo;
 import android.app.Service;
-import android.content.ComponentName;
 import android.content.Intent;
-import android.content.pm.ResolveInfo;
 import android.graphics.PointF;
 import android.os.Build;
 import android.os.Handler;
@@ -40,15 +39,17 @@ import android.util.Log;
 import android.util.SparseArray;
 import android.view.Choreographer;
 import android.view.MotionEvent;
+import android.view.VelocityTracker;
 import android.view.View;
 import android.view.ViewConfiguration;
 
 import com.android.launcher3.Launcher;
 import com.android.launcher3.LauncherAppState;
+import com.android.launcher3.LauncherState;
 import com.android.launcher3.MainThreadExecutor;
 import com.android.launcher3.R;
-import com.android.launcher3.uioverrides.UiFactory;
 import com.android.launcher3.util.TraceHelper;
+import com.android.quickstep.views.RecentsView;
 import com.android.systemui.shared.recents.IOverviewProxy;
 import com.android.systemui.shared.recents.ISystemUiProxy;
 import com.android.systemui.shared.system.ActivityManagerWrapper;
@@ -60,6 +61,8 @@ import com.android.systemui.shared.system.NavigationBarCompat.HitTarget;
 @TargetApi(Build.VERSION_CODES.O)
 public class TouchInteractionService extends Service {
 
+    public static final boolean DEBUG_OPEN_OVERVIEW_VIA_ALT_TAB = false;
+
     private static final SparseArray<String> sMotionEventNames;
 
     static {
@@ -83,7 +86,7 @@ public class TouchInteractionService extends Service {
         @Override
         public void onPreMotionEvent(@HitTarget int downHitTarget) throws RemoteException {
             TraceHelper.beginSection("SysUiBinder");
-            onBinderPreMotionEvent(downHitTarget);
+            setupTouchConsumer(downHitTarget);
             TraceHelper.partitionSection("SysUiBinder", "Down target " + downHitTarget);
         }
 
@@ -103,21 +106,12 @@ public class TouchInteractionService extends Service {
             mRecentsModel.setSystemUiProxy(mISystemUiProxy);
             RemoteRunnable.executeSafely(() -> mISystemUiProxy.setRecentsOnboardingText(
                     getResources().getString(R.string.recents_swipe_up_onboarding)));
-            Launcher launcher = (Launcher) LauncherAppState.getInstance(
-                    TouchInteractionService.this).getModel().getCallback();
-            UiFactory.onLauncherStateOrFocusChanged(launcher);
-        }
-
-        @Override
-        public void onQuickSwitch() {
-            mEventQueue.onQuickSwitch();
-            TraceHelper.endSection("SysUiBinder", "onQuickSwitch");
+            mOverviewInteractionState.setSystemUiProxy(mISystemUiProxy);
         }
 
         @Override
         public void onQuickScrubStart() {
             mEventQueue.onQuickScrubStart();
-            sQuickScrubEnabled = true;
             TraceHelper.partitionSection("SysUiBinder", "onQuickScrubStart");
         }
 
@@ -130,35 +124,57 @@ public class TouchInteractionService extends Service {
         public void onQuickScrubEnd() {
             mEventQueue.onQuickScrubEnd();
             TraceHelper.endSection("SysUiBinder", "onQuickScrubEnd");
-            sQuickScrubEnabled = false;
+        }
+
+        @Override
+        public void onOverviewToggle() {
+            mOverviewCommandHelper.onOverviewToggle();
+        }
+
+        @Override
+        public void onOverviewShown(boolean triggeredFromAltTab) {
+            if (DEBUG_OPEN_OVERVIEW_VIA_ALT_TAB) {
+                if (triggeredFromAltTab) {
+                    setupTouchConsumer(HIT_TARGET_NONE);
+                    mEventQueue.onOverviewShownFromAltTab();
+                }
+            }
+        }
+
+        @Override
+        public void onOverviewHidden(boolean triggeredFromAltTab, boolean triggeredFromHomeKey) {
+            if (DEBUG_OPEN_OVERVIEW_VIA_ALT_TAB) {
+                if (triggeredFromAltTab && !triggeredFromHomeKey) {
+                    // onOverviewShownFromAltTab initiates quick scrub. Ending it here.
+                    mEventQueue.onQuickScrubEnd();
+                }
+            }
+        }
+
+        @Override
+        public void onQuickStep(MotionEvent motionEvent) {
+
         }
     };
 
     private final TouchConsumer mNoOpTouchConsumer = (ev) -> {};
 
     private static boolean sConnected = false;
-    private static boolean sQuickScrubEnabled = false;
 
     public static boolean isConnected() {
         return sConnected;
     }
 
-    public static boolean isQuickScrubEnabled() {
-        return sQuickScrubEnabled;
-    }
-
     private ActivityManagerWrapper mAM;
-    private RunningTaskInfo mRunningTask;
     private RecentsModel mRecentsModel;
-    private Intent mHomeIntent;
-    private ComponentName mLauncher;
     private MotionEventQueue mEventQueue;
     private MainThreadExecutor mMainThreadExecutor;
     private ISystemUiProxy mISystemUiProxy;
+    private OverviewCommandHelper mOverviewCommandHelper;
+    private OverviewInteractionState mOverviewInteractionState;
 
     private Choreographer mMainThreadChoreographer;
     private Choreographer mBackgroundThreadChoreographer;
-    private MotionEventQueue mNoOpEventQueue;
 
     @Override
     public void onCreate() {
@@ -166,19 +182,10 @@ public class TouchInteractionService extends Service {
         mAM = ActivityManagerWrapper.getInstance();
         mRecentsModel = RecentsModel.getInstance(this);
         mMainThreadExecutor = new MainThreadExecutor();
-
-        mHomeIntent = new Intent(Intent.ACTION_MAIN)
-                .addCategory(Intent.CATEGORY_HOME)
-                .setPackage(getPackageName())
-                .setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-        ResolveInfo info = getPackageManager().resolveActivity(mHomeIntent, 0);
-        mLauncher = new ComponentName(getPackageName(), info.activityInfo.name);
-        // Clear the packageName as system can fail to dedupe it b/64108432
-        mHomeIntent.setComponent(mLauncher).setPackage(null);
-
+        mOverviewCommandHelper = new OverviewCommandHelper(this);
         mMainThreadChoreographer = Choreographer.getInstance();
-        mNoOpEventQueue = new MotionEventQueue(mMainThreadChoreographer, mNoOpTouchConsumer);
-        mEventQueue = mNoOpEventQueue;
+        mEventQueue = new MotionEventQueue(mMainThreadChoreographer, mNoOpTouchConsumer);
+        mOverviewInteractionState = OverviewInteractionState.getInstance(this);
 
         sConnected = true;
 
@@ -190,7 +197,6 @@ public class TouchInteractionService extends Service {
     @Override
     public void onDestroy() {
         sConnected = false;
-        sQuickScrubEnabled = false;
         super.onDestroy();
     }
 
@@ -200,32 +206,47 @@ public class TouchInteractionService extends Service {
         return mMyBinder;
     }
 
-    private void onBinderPreMotionEvent(@HitTarget int downHitTarget) {
-        mRunningTask = mAM.getRunningTask();
-
+    private void setupTouchConsumer(@HitTarget int downHitTarget) {
         mEventQueue.reset();
-
-        if (mRunningTask == null) {
-            mEventQueue = mNoOpEventQueue;
-        } else if (mRunningTask.topActivity.equals(mLauncher)) {
-            mEventQueue = getLauncherEventQueue();
-        } else {
+        TouchConsumer oldConsumer = mEventQueue.getConsumer();
+        if (oldConsumer.deferNextEventToMainThread()) {
             mEventQueue = new MotionEventQueue(mMainThreadChoreographer,
-                    new OtherActivityTouchConsumer(this, mRunningTask, mRecentsModel,
-                    mHomeIntent, mISystemUiProxy, mMainThreadExecutor,
-                    mBackgroundThreadChoreographer, downHitTarget));
+                    new DeferredTouchConsumer((v) -> getCurrentTouchConsumer(downHitTarget,
+                            oldConsumer.forceToLauncherConsumer(), v)));
+            mEventQueue.deferInit();
+        } else {
+            mEventQueue = new MotionEventQueue(
+                    mMainThreadChoreographer, getCurrentTouchConsumer(downHitTarget, false, null));
         }
     }
 
-    private MotionEventQueue getLauncherEventQueue() {
+    private TouchConsumer getCurrentTouchConsumer(
+            @HitTarget int downHitTarget, boolean forceToLauncher, VelocityTracker tracker) {
+        RunningTaskInfo runningTaskInfo = mAM.getRunningTask();
+
+        if (runningTaskInfo == null && !forceToLauncher) {
+            return mNoOpTouchConsumer;
+        } else if (forceToLauncher ||
+                runningTaskInfo.topActivity.equals(mOverviewCommandHelper.launcher)) {
+            return getLauncherConsumer();
+        } else {
+            if (tracker == null) {
+                tracker = VelocityTracker.obtain();
+            }
+            return new OtherActivityTouchConsumer(this, runningTaskInfo, mRecentsModel,
+                            mOverviewCommandHelper.homeIntent,
+                            mOverviewCommandHelper.getActivityControlHelper(), mMainThreadExecutor,
+                            mBackgroundThreadChoreographer, downHitTarget, tracker);
+        }
+    }
+
+    private TouchConsumer getLauncherConsumer() {
         Launcher launcher = (Launcher) LauncherAppState.getInstance(this).getModel().getCallback();
         if (launcher == null) {
-            return mNoOpEventQueue;
+            return mNoOpTouchConsumer;
         }
-
         View target = launcher.getDragLayer();
-        return new MotionEventQueue(mMainThreadChoreographer,
-                new LauncherTouchConsumer(launcher, target));
+        return new LauncherTouchConsumer(launcher, target);
     }
 
     private static class LauncherTouchConsumer implements TouchConsumer {
@@ -307,16 +328,11 @@ public class TouchInteractionService extends Service {
             if (mInvalidated) {
                 return;
             }
-            if (TouchConsumer.isInteractionQuick(interactionType)) {
+            if (interactionType == INTERACTION_QUICK_SCRUB) {
                 Runnable action = () -> {
-                    Runnable onComplete = null;
-                    if (interactionType == INTERACTION_QUICK_SCRUB) {
-                        mQuickScrubController.onQuickScrubStart(true);
-                    } else if (interactionType == INTERACTION_QUICK_SWITCH) {
-                        onComplete = mQuickScrubController::onQuickSwitch;
-                    }
-                    mLauncher.getStateManager().goToState(OVERVIEW, true, 0,
-                            QUICK_SWITCH_START_DURATION, onComplete);
+                    LauncherState fromState = mLauncher.getStateManager().getState();
+                    mLauncher.getStateManager().goToState(FAST_OVERVIEW, true);
+                    mQuickScrubController.onQuickScrubStart(fromState == NORMAL);
                 };
 
                 if (mLauncher.getWorkspace().runOnOverlayHidden(action)) {

quickstep/src/com/android/quickstep/WindowTransformSwipeHandler.java

@@ -15,24 +15,20 @@
  */
 package com.android.quickstep;
 
-import static com.android.launcher3.LauncherState.OVERVIEW;
-import static com.android.launcher3.allapps.AllAppsTransitionController.ALL_APPS_PROGRESS;
+import static com.android.launcher3.anim.Interpolators.ACCEL_2;
 import static com.android.launcher3.anim.Interpolators.LINEAR;
-import static com.android.quickstep.QuickScrubController.QUICK_SWITCH_START_DURATION;
+import static com.android.quickstep.QuickScrubController.QUICK_SCRUB_START_DURATION;
 import static com.android.quickstep.TouchConsumer.INTERACTION_NORMAL;
 import static com.android.quickstep.TouchConsumer.INTERACTION_QUICK_SCRUB;
-import static com.android.quickstep.TouchConsumer.INTERACTION_QUICK_SWITCH;
-import static com.android.quickstep.TouchConsumer.isInteractionQuick;
-import static com.android.systemui.shared.recents.utilities.Utilities.postAtFrontOfQueueAsynchronously;
+import static com.android.systemui.shared.recents.utilities.Utilities
+        .postAtFrontOfQueueAsynchronously;
 import static com.android.systemui.shared.system.RemoteAnimationTargetCompat.MODE_CLOSING;
 
 import android.animation.Animator;
-import android.animation.AnimatorSet;
 import android.animation.ObjectAnimator;
 import android.annotation.TargetApi;
 import android.app.ActivityManager.RunningTaskInfo;
 import android.content.Context;
-import android.content.pm.ActivityInfo;
 import android.content.res.Resources;
 import android.graphics.Matrix;
 import android.graphics.Matrix.ScaleToFit;
@@ -42,21 +38,21 @@ import android.graphics.RectF;
 import android.os.Build;
 import android.os.Handler;
 import android.os.Looper;
+import android.os.SystemClock;
 import android.support.annotation.UiThread;
 import android.support.annotation.WorkerThread;
 import android.util.Log;
 import android.view.View;
 import android.view.ViewTreeObserver.OnDrawListener;
+import android.view.animation.Interpolator;
 
 import com.android.launcher3.AbstractFloatingView;
+import com.android.launcher3.BaseDraggingActivity;
 import com.android.launcher3.DeviceProfile;
-import com.android.launcher3.Launcher;
 import com.android.launcher3.LauncherAppState;
-import com.android.launcher3.LauncherState;
 import com.android.launcher3.MainThreadExecutor;
 import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
-import com.android.launcher3.allapps.AllAppsTransitionController;
 import com.android.launcher3.anim.AnimationSuccessListener;
 import com.android.launcher3.anim.AnimatorPlaybackController;
 import com.android.launcher3.anim.Interpolators;
@@ -65,11 +61,16 @@ import com.android.launcher3.userevent.nano.LauncherLogProto.Action.Direction;
 import com.android.launcher3.userevent.nano.LauncherLogProto.Action.Touch;
 import com.android.launcher3.userevent.nano.LauncherLogProto.ContainerType;
 import com.android.launcher3.util.TraceHelper;
-import com.android.launcher3.util.ViewOnDrawExecutor;
+import com.android.quickstep.ActivityControlHelper.ActivityInitListener;
+import com.android.quickstep.ActivityControlHelper.LayoutListener;
 import com.android.quickstep.TouchConsumer.InteractionType;
+import com.android.quickstep.util.SysuiEventLogger;
+import com.android.quickstep.views.RecentsView;
+import com.android.quickstep.views.TaskView;
 import com.android.systemui.shared.recents.model.ThumbnailData;
 import com.android.systemui.shared.recents.utilities.RectFEvaluator;
 import com.android.systemui.shared.system.InputConsumerController;
+import com.android.systemui.shared.system.LatencyTrackerCompat;
 import com.android.systemui.shared.system.RecentsAnimationControllerCompat;
 import com.android.systemui.shared.system.RemoteAnimationTargetCompat;
 import com.android.systemui.shared.system.TransactionCompat;
@@ -78,7 +79,7 @@ import com.android.systemui.shared.system.WindowManagerWrapper;
 import java.util.StringJoiner;
 
 @TargetApi(Build.VERSION_CODES.O)
-public class WindowTransformSwipeHandler extends BaseSwipeInteractionHandler {
+public class WindowTransformSwipeHandler<T extends BaseDraggingActivity> {
     private static final String TAG = WindowTransformSwipeHandler.class.getSimpleName();
     private static final boolean DEBUG_STATES = false;
 
@@ -101,9 +102,8 @@ public class WindowTransformSwipeHandler extends BaseSwipeInteractionHandler {
 
     // States for quick switch/scrub
     private static final int STATE_SWITCH_TO_SCREENSHOT_COMPLETE = 1 << 10;
-    private static final int STATE_QUICK_SWITCH = 1 << 11;
-    private static final int STATE_QUICK_SCRUB_START = 1 << 12;
-    private static final int STATE_QUICK_SCRUB_END = 1 << 13;
+    private static final int STATE_QUICK_SCRUB_START = 1 << 11;
+    private static final int STATE_QUICK_SCRUB_END = 1 << 12;
 
     private static final int LAUNCHER_UI_STATES =
             STATE_LAUNCHER_PRESENT | STATE_LAUNCHER_DRAWN | STATE_ACTIVITY_MULTIPLIER_COMPLETE
@@ -152,6 +152,8 @@ public class WindowTransformSwipeHandler extends BaseSwipeInteractionHandler {
     // The clip rect in source app window coordinates
     private final Rect mClipRect = new Rect();
     private final RectFEvaluator mRectFEvaluator = new RectFEvaluator();
+    protected Runnable mGestureEndCallback;
+    protected boolean mIsGoingToHome;
     private DeviceProfile mDp;
     private int mTransitionDragLength;
 
@@ -165,12 +167,14 @@ public class WindowTransformSwipeHandler extends BaseSwipeInteractionHandler {
 
     private final Context mContext;
     private final int mRunningTaskId;
+    private final ActivityControlHelper<T> mActivityControlHelper;
+    private final ActivityInitListener mActivityInitListener;
 
     private MultiStateCallback mStateCallback;
     private AnimatorPlaybackController mLauncherTransitionController;
 
-    private Launcher mLauncher;
-    private LauncherLayoutListener mLauncherLayoutListener;
+    private T mActivity;
+    private LayoutListener mLayoutListener;
     private RecentsView mRecentsView;
     private QuickScrubController mQuickScrubController;
 
@@ -189,11 +193,21 @@ public class WindowTransformSwipeHandler extends BaseSwipeInteractionHandler {
 
     private final RecentsAnimationWrapper mRecentsAnimationWrapper = new RecentsAnimationWrapper();
     private Matrix mTmpMatrix = new Matrix();
+    private final long mTouchTimeMs;
+    private long mLauncherFrameDrawnTime;
 
-    WindowTransformSwipeHandler(RunningTaskInfo runningTaskInfo, Context context) {
+    WindowTransformSwipeHandler(RunningTaskInfo runningTaskInfo, Context context, long touchTimeMs,
+            ActivityControlHelper<T> controller) {
         mContext = context;
         mRunningTaskId = runningTaskInfo.id;
-        mInputConsumer.registerInputConsumer();
+        mTouchTimeMs = touchTimeMs;
+        mActivityControlHelper = controller;
+        mActivityInitListener = mActivityControlHelper
+                .createActivityInitListener(this::onActivityInit);
+
+        // Register the input consumer on the UI thread, to ensure that it runs after any pending
+        // unregister calls
+        mMainExecutor.execute(mInputConsumer::registerInputConsumer);
         initStateCallbacks();
     }
 
@@ -236,13 +250,10 @@ public class WindowTransformSwipeHandler extends BaseSwipeInteractionHandler {
         mStateCallback.addCallback(STATE_LAUNCHER_PRESENT | STATE_HANDLER_INVALIDATED,
                 this::invalidateHandlerWithLauncher);
 
-        mStateCallback.addCallback(STATE_LAUNCHER_PRESENT | STATE_QUICK_SWITCH,
-                this::onQuickInteractionStart);
         mStateCallback.addCallback(STATE_LAUNCHER_PRESENT | STATE_QUICK_SCRUB_START,
-                this::onQuickInteractionStart);
-
-        mStateCallback.addCallback(STATE_LAUNCHER_PRESENT | STATE_SWITCH_TO_SCREENSHOT_COMPLETE
-                | STATE_QUICK_SWITCH, this::switchToFinalAppAfterQuickSwitch);
+                this::onQuickScrubStart);
+        mStateCallback.addCallback(STATE_LAUNCHER_PRESENT | STATE_QUICK_SCRUB_START
+                | STATE_SCALED_CONTROLLER_RECENTS, this::onFinishedTransitionToQuickScrub);
         mStateCallback.addCallback(STATE_LAUNCHER_PRESENT | STATE_SWITCH_TO_SCREENSHOT_COMPLETE
                 | STATE_QUICK_SCRUB_END, this::switchToFinalAppAfterQuickScrub);
     }
@@ -263,7 +274,8 @@ public class WindowTransformSwipeHandler extends BaseSwipeInteractionHandler {
                 mSourceStackBounds.height() - mSourceInsets.bottom);
 
         Rect tempRect = new Rect();
-        RecentsView.getPageRect(dp, mContext, tempRect);
+        mTransitionDragLength = mActivityControlHelper
+                .getSwipeUpDestinationAndLength(dp, mContext, tempRect);
 
         mTargetRect.set(tempRect);
         mTargetRect.offset(mHomeStackBounds.left - mSourceStackBounds.left,
@@ -284,14 +296,15 @@ public class WindowTransformSwipeHandler extends BaseSwipeInteractionHandler {
                 Math.max(mSourceStackBounds.width() - scaledTargetRect.right, 0),
                 Math.max(mSourceStackBounds.height() - scaledTargetRect.bottom, 0));
         mSourceRect.set(scaledTargetRect);
+    }
 
-        Rect targetInsets = dp.getInsets();
-        if (dp.isVerticalBarLayout()) {
-            int hotseatInset = dp.isSeascape() ? targetInsets.left : targetInsets.right;
-            mTransitionDragLength = dp.hotseatBarSizePx + dp.hotseatBarSidePaddingPx + hotseatInset;
-        } else {
-            mTransitionDragLength = dp.heightPx - tempRect.bottom;
-        }
+    public int getTransitionLength() {
+        return mTransitionDragLength;
+    }
+
+    public RectF getTargetRect(Point outWindowSize) {
+        outWindowSize.set(mDp.widthPx, mDp.heightPx);
+        return mInitialTargetRect;
     }
 
     private long getFadeInDuration() {
@@ -306,39 +319,39 @@ public class WindowTransformSwipeHandler extends BaseSwipeInteractionHandler {
         }
     }
 
-    @Override
-    protected boolean init(final Launcher launcher, boolean alreadyOnHome) {
-        if (launcher == mLauncher) {
+    public void initWhenReady() {
+        mActivityInitListener.register();
+    }
+
+    private boolean onActivityInit(final T activity, Boolean alreadyOnHome) {
+        if (mActivity == activity) {
             return true;
         }
-        if (mLauncher != null) {
+        if (mActivity != null) {
             // The launcher may have been recreated as a result of device rotation.
             int oldState = mStateCallback.getState() & ~LAUNCHER_UI_STATES;
             initStateCallbacks();
             mStateCallback.setState(oldState);
-            mLauncherLayoutListener.setHandler(null);
+            mLayoutListener.setHandler(null);
         }
         mWasLauncherAlreadyVisible = alreadyOnHome;
-        mLauncher = launcher;
+        mActivity = activity;
 
-        // For the duration of the gesture, lock the screen orientation to ensure that we do not
-        // rotate mid-quickscrub
-        mLauncher.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LOCKED);
-        mRecentsView = mLauncher.getOverviewPanel();
+        mRecentsView = activity.getOverviewPanel();
         mQuickScrubController = mRecentsView.getQuickScrubController();
-        mLauncherLayoutListener = new LauncherLayoutListener(mLauncher);
+        mLayoutListener = mActivityControlHelper.createLayoutListener(mActivity);
 
         mStateCallback.setState(STATE_LAUNCHER_PRESENT);
         if (alreadyOnHome) {
-            onLauncherStart(launcher);
+            onLauncherStart(activity);
         } else {
-            launcher.setOnStartCallback(this::onLauncherStart);
+            activity.setOnStartCallback(this::onLauncherStart);
         }
         return true;
     }
 
-    private void onLauncherStart(final Launcher launcher) {
-        if (mLauncher != launcher) {
+    private void onLauncherStart(final T activity) {
+        if (mActivity != activity) {
             return;
         }
         if ((mStateCallback.getState() & STATE_HANDLER_INVALIDATED) != 0) {
@@ -346,31 +359,20 @@ public class WindowTransformSwipeHandler extends BaseSwipeInteractionHandler {
         }
 
         mStateCallback.setState(STATE_LAUNCHER_STARTED);
-        LauncherState startState = mLauncher.getStateManager().getState();
-        if (startState.disableRestore) {
-            startState = mLauncher.getStateManager().getRestState();
-        }
-        mLauncher.getStateManager().setRestState(startState);
+        mActivityControlHelper.prepareRecentsUI(mActivity, mWasLauncherAlreadyVisible);
+        AbstractFloatingView.closeAllOpenViews(activity, mWasLauncherAlreadyVisible);
 
-        AbstractFloatingView.closeAllOpenViews(mLauncher, mWasLauncherAlreadyVisible);
-
-
-        if (mWasLauncherAlreadyVisible && !mLauncher.getAppTransitionManager().isAnimating()) {
-            DeviceProfile dp = mLauncher.getDeviceProfile();
-            long accuracy = 2 * Math.max(dp.widthPx, dp.heightPx);
-            mLauncherTransitionController = mLauncher.getStateManager()
-                    .createAnimationToNewWorkspace(OVERVIEW, accuracy);
+        if (mWasLauncherAlreadyVisible) {
+            mLauncherTransitionController = mActivityControlHelper
+                    .createControllerForVisibleActivity(activity);
             mLauncherTransitionController.dispatchOnStart();
             mLauncherTransitionController.setPlayFraction(mCurrentShift.value);
 
             mStateCallback.setState(STATE_ACTIVITY_MULTIPLIER_COMPLETE | STATE_LAUNCHER_DRAWN);
         } else {
             TraceHelper.beginSection("WTS-init");
-            mLauncher.getStateManager().goToState(OVERVIEW, false);
-            TraceHelper.partitionSection("WTS-init", "State changed");
-
             // TODO: Implement a better animation for fading in
-            View rootView = mLauncher.getRootView();
+            View rootView = activity.getRootView();
             rootView.setAlpha(0);
             rootView.getViewTreeObserver().addOnDrawListener(new OnDrawListener() {
 
@@ -379,21 +381,18 @@ public class WindowTransformSwipeHandler extends BaseSwipeInteractionHandler {
                     TraceHelper.endSection("WTS-init", "Launcher frame is drawn");
                     rootView.post(() ->
                             rootView.getViewTreeObserver().removeOnDrawListener(this));
-                    if (launcher != mLauncher) {
+                    if (activity != mActivity) {
                         return;
                     }
 
                     mStateCallback.setState(STATE_LAUNCHER_DRAWN);
                 }
             });
-
-            // Optimization, hide the all apps view to prevent layout while initializing
-            mLauncher.getAppsView().setVisibility(View.GONE);
         }
 
         mRecentsView.showTask(mRunningTaskId);
         mRecentsView.setFirstTaskIconScaledDown(true /* isScaledDown */, false /* animate */);
-        mLauncherLayoutListener.open();
+        mLayoutListener.open();
     }
 
     public void setLauncherOnDrawCallback(Runnable callback) {
@@ -401,7 +400,7 @@ public class WindowTransformSwipeHandler extends BaseSwipeInteractionHandler {
     }
 
     private void launcherFrameDrawn() {
-        View rootView = mLauncher.getRootView();
+        View rootView = mActivity.getRootView();
         if (rootView.getAlpha() < 1) {
             if (mGestureStarted) {
                 final MultiStateCallback callback = mStateCallback;
@@ -416,11 +415,19 @@ public class WindowTransformSwipeHandler extends BaseSwipeInteractionHandler {
         if (mLauncherDrawnCallback != null) {
             mLauncherDrawnCallback.run();
         }
+        mLauncherFrameDrawnTime = SystemClock.uptimeMillis();
     }
 
     private void initializeLauncherAnimationController() {
-        mLauncherLayoutListener.setHandler(this);
+        mLayoutListener.setHandler(this);
         onLauncherLayoutChanged();
+
+        final long transitionDelay = mLauncherFrameDrawnTime - mTouchTimeMs;
+        SysuiEventLogger.writeDummyRecentsTransition(transitionDelay);
+
+        if (LatencyTrackerCompat.isEnabled(mContext)) {
+            LatencyTrackerCompat.logToggleRecents((int) transitionDelay);
+        }
     }
 
     public void updateInteractionType(@InteractionType int interactionType) {
@@ -428,21 +435,16 @@ public class WindowTransformSwipeHandler extends BaseSwipeInteractionHandler {
             throw new IllegalArgumentException(
                     "Can't change interaction type from " + mInteractionType);
         }
-        if (!isInteractionQuick(interactionType)) {
+        if (interactionType != INTERACTION_QUICK_SCRUB) {
             throw new IllegalArgumentException(
                     "Can't change interaction type to " + interactionType);
         }
         mInteractionType = interactionType;
 
-        setStateOnUiThread(interactionType == INTERACTION_QUICK_SWITCH
-                ? STATE_QUICK_SWITCH : STATE_QUICK_SCRUB_START);
+        setStateOnUiThread(STATE_QUICK_SCRUB_START);
 
         // Start the window animation without waiting for launcher.
-        animateToProgress(1f, QUICK_SWITCH_START_DURATION);
-    }
-
-    private void onQuickInteractionStart() {
-        mQuickScrubController.onQuickScrubStart(false);
+        animateToProgress(1f, QUICK_SCRUB_START_DURATION);
     }
 
     @WorkerThread
@@ -455,32 +457,14 @@ public class WindowTransformSwipeHandler extends BaseSwipeInteractionHandler {
     }
 
     /**
-     * Called by {@link #mLauncherLayoutListener} when launcher layout changes
+     * Called by {@link #mLayoutListener} when launcher layout changes
      */
     public void onLauncherLayoutChanged() {
-        initTransitionEndpoints(mLauncher.getDeviceProfile());
+        initTransitionEndpoints(mActivity.getDeviceProfile());
 
         if (!mWasLauncherAlreadyVisible) {
-            float startProgress;
-            AllAppsTransitionController controller = mLauncher.getAllAppsController();
-
-            if (mLauncher.getDeviceProfile().isVerticalBarLayout()) {
-                startProgress = 1;
-            } else {
-                float scrollRange = Math.max(controller.getShiftRange(), 1);
-                startProgress = (mTransitionDragLength / scrollRange) + 1;
-            }
-            AnimatorSet anim = new AnimatorSet();
-            ObjectAnimator shiftAnim = ObjectAnimator.ofFloat(controller, ALL_APPS_PROGRESS,
-                    startProgress, OVERVIEW.getVerticalProgress(mLauncher));
-            shiftAnim.setInterpolator(LINEAR);
-            anim.play(shiftAnim);
-
-            // TODO: Link this animation to state animation, so that it is cancelled
-            // automatically on state change
-            anim.setDuration(mTransitionDragLength * 2);
-            mLauncherTransitionController =
-                    AnimatorPlaybackController.wrap(anim, mTransitionDragLength * 2);
+            mLauncherTransitionController = mActivityControlHelper
+                    .createControllerForHiddenActivity(mActivity, mTransitionDragLength);
             mLauncherTransitionController.setPlayFraction(mCurrentShift.value);
         }
     }
@@ -493,7 +477,12 @@ public class WindowTransformSwipeHandler extends BaseSwipeInteractionHandler {
             if (mRecentsAnimationWrapper.controller != null) {
                 RectF currentRect;
                 synchronized (mTargetRect) {
-                    currentRect = mRectFEvaluator.evaluate(shift, mSourceRect, mTargetRect);
+                    Interpolator interpolator = mInteractionType == INTERACTION_QUICK_SCRUB
+                            ? ACCEL_2 : LINEAR;
+                    float interpolated = interpolator.getInterpolation(shift);
+                    currentRect = mRectFEvaluator.evaluate(interpolated, mSourceRect, mTargetRect);
+                    // Stay lined up with the center of the target, since it moves for quick scrub.
+                    currentRect.offset(mTargetRect.centerX() - currentRect.centerX(), 0);
                 }
 
                 mClipRect.left = (int) (mSourceWindowClipInsets.left * shift);
@@ -509,8 +498,13 @@ public class WindowTransformSwipeHandler extends BaseSwipeInteractionHandler {
                 for (RemoteAnimationTargetCompat app : mRecentsAnimationWrapper.targets) {
                     if (app.mode == MODE_CLOSING) {
                         transaction.setMatrix(app.leash, mTmpMatrix)
-                                .setWindowCrop(app.leash, mClipRect)
-                                .show(app.leash);
+                                .setWindowCrop(app.leash, mClipRect);
+
+                        if (app.isNotInRecents) {
+                            transaction.setAlpha(app.leash, 1 - shift);
+                        }
+
+                        transaction.show(app.leash);
                     }
                 }
                 transaction.apply();
@@ -525,17 +519,21 @@ public class WindowTransformSwipeHandler extends BaseSwipeInteractionHandler {
                 mLauncherTransitionController.setPlayFraction(shift);
 
                 // Make sure the window follows the first task if it moves, e.g. during quick scrub.
-                int firstTaskIndex = mRecentsView.getFirstTaskIndex();
-                View firstTask = mRecentsView.getPageAt(firstTaskIndex);
-                int scrollForFirstTask = mRecentsView.getScrollForPage(firstTaskIndex);
+                View firstTask = mRecentsView.getPageAt(0);
+                int scrollForFirstTask = mRecentsView.getScrollForPage(0);
                 int offsetFromFirstTask = (scrollForFirstTask - mRecentsView.getScrollX());
-                if (offsetFromFirstTask != 0) {
-                    synchronized (mTargetRect) {
-                        mTargetRect.set(mInitialTargetRect);
-                        Utilities.scaleRectFAboutCenter(mTargetRect, firstTask.getScaleX());
-                        float offsetX = offsetFromFirstTask + firstTask.getTranslationX();
-                        mTargetRect.offset(offsetX, 0);
-                    }
+                synchronized (mTargetRect) {
+                    mTargetRect.set(mInitialTargetRect);
+                    Utilities.scaleRectFAboutCenter(mTargetRect, firstTask.getScaleX());
+                    float offsetX = offsetFromFirstTask + firstTask.getTranslationX();
+                    float offsetY = mRecentsView.getTranslationY();
+                    mTargetRect.offset(offsetX, offsetY);
+                }
+                if (mRecentsAnimationWrapper.controller != null) {
+
+                    // TODO: This logic is spartanic!
+                    mRecentsAnimationWrapper.controller.setAnimationTargetsBehindSystemBars(
+                            shift < 0.12f);
                 }
             };
             if (Looper.getMainLooper() == Looper.myLooper()) {
@@ -583,14 +581,13 @@ public class WindowTransformSwipeHandler extends BaseSwipeInteractionHandler {
                 }
             }
         }
-
         mRecentsAnimationWrapper.setController(controller, apps);
         setStateOnUiThread(STATE_APP_CONTROLLER_RECEIVED);
     }
 
     public void onRecentsAnimationCanceled() {
         mRecentsAnimationWrapper.setController(null, null);
-        clearReference();
+        mActivityInitListener.unregister();
         setStateOnUiThread(STATE_GESTURE_CANCELLED | STATE_HANDLER_INVALIDATED);
     }
 
@@ -606,9 +603,10 @@ public class WindowTransformSwipeHandler extends BaseSwipeInteractionHandler {
      * on both background and UI threads
      */
     private void notifyGestureStarted() {
-        final Launcher curLauncher = mLauncher;
-        if (curLauncher != null) {
-            curLauncher.onQuickstepGestureStarted(mWasLauncherAlreadyVisible);
+        final T curActivity = mActivity;
+        if (curActivity != null) {
+            mActivityControlHelper.onQuickstepGestureStarted(
+                    curActivity, mWasLauncherAlreadyVisible);
         }
     }
 
@@ -658,13 +656,14 @@ public class WindowTransformSwipeHandler extends BaseSwipeInteractionHandler {
 
     /** Animates to the given progress, where 0 is the current app and 1 is overview. */
     private void animateToProgress(float progress, long duration) {
+        mIsGoingToHome = Float.compare(progress, 1) == 0;
         ObjectAnimator anim = mCurrentShift.animateToValue(progress).setDuration(duration);
         anim.setInterpolator(Interpolators.SCROLL);
         anim.addListener(new AnimationSuccessListener() {
             @Override
             public void onAnimationSuccess(Animator animator) {
-                setStateOnUiThread((Float.compare(mCurrentShift.value, 0) == 0)
-                        ? STATE_SCALED_CONTROLLER_APP : STATE_SCALED_CONTROLLER_RECENTS);
+                setStateOnUiThread(mIsGoingToHome ?
+                        STATE_SCALED_CONTROLLER_RECENTS : STATE_SCALED_CONTROLLER_APP);
             }
         });
         anim.start();
@@ -685,30 +684,26 @@ public class WindowTransformSwipeHandler extends BaseSwipeInteractionHandler {
     }
 
     private void invalidateHandler() {
-        mCurrentShift.cancelAnimation();
+        mCurrentShift.finishAnimation();
 
         if (mGestureEndCallback != null) {
             mGestureEndCallback.run();
         }
 
-        clearReference();
+        mActivityInitListener.unregister();
         mInputConsumer.unregisterInputConsumer();
     }
 
     private void invalidateHandlerWithLauncher() {
         mLauncherTransitionController = null;
-        mLauncherLayoutListener.setHandler(null);
-        mLauncherLayoutListener.close(false);
+        mLayoutListener.finish();
 
-        // Restore the requested orientation to the user preference after the gesture has ended
-        mLauncher.updateRequestedOrientation();
         mRecentsView.setFirstTaskIconScaledDown(false /* isScaledDown */, false /* animate */);
     }
 
     private void resetStateForAnimationCancel() {
-        LauncherState startState = mLauncher.getStateManager().getRestState();
-        boolean animate = mWasLauncherAlreadyVisible || mGestureStarted;
-        mLauncher.getStateManager().goToState(startState, animate);
+        boolean wasVisible = mWasLauncherAlreadyVisible || mGestureStarted;
+        mActivityControlHelper.onTransitionCancelled(mActivity, wasVisible);
     }
 
     public void layoutListenerClosed() {
@@ -737,17 +732,8 @@ public class WindowTransformSwipeHandler extends BaseSwipeInteractionHandler {
                         if (taskView != null) {
                             // Defer finishing the animation until the next launcher frame with the
                             // new thumbnail
-                            ViewOnDrawExecutor executor = new ViewOnDrawExecutor() {
-                                @Override
-                                public void onViewDetachedFromWindow(View v) {
-                                    if (!isCompleted()) {
-                                        runAllTasks();
-                                    }
-                                }
-                            };
-                            executor.attachTo(mLauncher, taskView,
-                                    false /* waitForLoadAnimation */);
-                            executor.execute(finishTransitionRunnable);
+                            mActivityControlHelper.executeOnNextDraw(mActivity, taskView,
+                                    finishTransitionRunnable);
                             finishTransitionPosted = true;
                         }
                     }
@@ -763,8 +749,7 @@ public class WindowTransformSwipeHandler extends BaseSwipeInteractionHandler {
     }
 
     private void setupLauncherUiAfterSwipeUpAnimation() {
-        // Re apply state in case we did something funky during the transition.
-        mLauncher.getStateManager().reapplyState();
+        mActivityControlHelper.onSwipeUpComplete(mActivity);
 
         // Animate the first icon.
         mRecentsView.setFirstTaskIconScaledDown(false /* isScaledDown */, true /* animate */);
@@ -772,21 +757,13 @@ public class WindowTransformSwipeHandler extends BaseSwipeInteractionHandler {
         reset();
     }
 
-    public void onQuickScrubEnd() {
-        setStateOnUiThread(STATE_QUICK_SCRUB_END);
+    private void onQuickScrubStart() {
+        mActivityControlHelper.onQuickInteractionStart(mActivity, mWasLauncherAlreadyVisible);
+        mQuickScrubController.onQuickScrubStart(false);
     }
 
-    private void switchToFinalAppAfterQuickSwitch() {
-        mQuickScrubController.onQuickSwitch();
-    }
-
-    private void switchToFinalAppAfterQuickScrub() {
-        mQuickScrubController.onQuickScrubEnd();
-
-        // Normally this is handled in reset(), but since we are still scrubbing after the
-        // transition into recents, we need to defer the handler invalidation for quick scrub until
-        // after the gesture ends
-        setStateOnUiThread(STATE_HANDLER_INVALIDATED);
+    private void onFinishedTransitionToQuickScrub() {
+        mQuickScrubController.onFinishedTransitionToQuickScrub();
     }
 
     public void onQuickScrubProgress(float progress) {
@@ -799,6 +776,19 @@ public class WindowTransformSwipeHandler extends BaseSwipeInteractionHandler {
         mQuickScrubController.onQuickScrubProgress(progress);
     }
 
+    public void onQuickScrubEnd() {
+        setStateOnUiThread(STATE_QUICK_SCRUB_END);
+    }
+
+    private void switchToFinalAppAfterQuickScrub() {
+        mQuickScrubController.onQuickScrubEnd();
+
+        // Normally this is handled in reset(), but since we are still scrubbing after the
+        // transition into recents, we need to defer the handler invalidation for quick scrub until
+        // after the gesture ends
+        setStateOnUiThread(STATE_HANDLER_INVALIDATED);
+    }
+
     private void debugNewState(int stateFlag) {
         if (!DEBUG_STATES) {
             return;
@@ -818,4 +808,8 @@ public class WindowTransformSwipeHandler extends BaseSwipeInteractionHandler {
         Log.d(TAG, "[" + System.identityHashCode(this) + "] Adding " + stateFlagStr + " to "
                 + currentStateStr);
     }
+
+    public void setGestureEndCallback(Runnable gestureEndCallback) {
+        mGestureEndCallback = gestureEndCallback;
+    }
 }

quickstep/src/com/android/quickstep/util/SysuiEventLogger.java

@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.quickstep.util;
+
+import android.metrics.LogMaker;
+import android.util.EventLog;
+
+/**
+ * Utility class for writing logs on behalf of systemUI
+ */
+public class SysuiEventLogger {
+
+    /** 524292 sysui_multi_action (content|4) */
+    public static final int SYSUI_MULTI_ACTION = 524292;
+
+    private static void write(LogMaker content) {
+        if (content.getType() == 0/*MetricsEvent.TYPE_UNKNOWN*/) {
+            content.setType(4/*MetricsEvent.TYPE_ACTION*/);
+        }
+        EventLog.writeEvent(SYSUI_MULTI_ACTION, content.serialize());
+    }
+
+    public static void writeDummyRecentsTransition(long transitionDelay) {
+        // Mimic ActivityMetricsLogger.logAppTransitionMultiEvents() logging for
+        // "Recents" activity for app transition tests for the app-to-recents case.
+        final LogMaker builder = new LogMaker(761/*APP_TRANSITION*/);
+        builder.setPackageName("com.android.systemui");
+        builder.addTaggedData(871/*FIELD_CLASS_NAME*/,
+                "com.android.systemui.recents.RecentsActivity");
+        builder.addTaggedData(319/*APP_TRANSITION_DELAY_MS*/,
+                transitionDelay);
+        write(builder);
+    }
+}

quickstep/src/com/android/quickstep/views/LauncherLayoutListener.java

@@ -13,7 +13,9 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.android.quickstep;
+package com.android.quickstep.views;
+
+import static com.android.launcher3.states.RotationHelper.REQUEST_NONE;
 
 import android.graphics.Rect;
 import android.view.MotionEvent;
@@ -21,11 +23,14 @@ import android.view.MotionEvent;
 import com.android.launcher3.AbstractFloatingView;
 import com.android.launcher3.Insettable;
 import com.android.launcher3.Launcher;
+import com.android.quickstep.ActivityControlHelper.LayoutListener;
+import com.android.quickstep.WindowTransformSwipeHandler;
 
 /**
  * Floating view which shows the task snapshot allowing it to be dragged and placed.
  */
-public class LauncherLayoutListener extends AbstractFloatingView implements Insettable {
+public class LauncherLayoutListener extends AbstractFloatingView
+        implements Insettable, LayoutListener {
 
     private final Launcher mLauncher;
     private WindowTransformSwipeHandler mHandler;
@@ -36,6 +41,7 @@ public class LauncherLayoutListener extends AbstractFloatingView implements Inse
         setVisibility(INVISIBLE);
     }
 
+    @Override
     public void setHandler(WindowTransformSwipeHandler handler) {
         mHandler = handler;
     }
@@ -65,6 +71,7 @@ public class LauncherLayoutListener extends AbstractFloatingView implements Inse
         }
     }
 
+    @Override
     public void open() {
         if (!mIsOpen) {
             mLauncher.getDragLayer().addView(this);
@@ -86,4 +93,11 @@ public class LauncherLayoutListener extends AbstractFloatingView implements Inse
     protected boolean isOfType(int type) {
         return (type & TYPE_QUICKSTEP_PREVIEW) != 0;
     }
+
+    @Override
+    public void finish() {
+        setHandler(null);
+        close(false);
+        mLauncher.getRotationHelper().setStateHandlerRequest(REQUEST_NONE);
+    }
 }

quickstep/src/com/android/quickstep/views/LauncherRecentsView.java

@@ -0,0 +1,129 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.quickstep.views;
+
+import static com.android.launcher3.LauncherState.NORMAL;
+
+import android.annotation.TargetApi;
+import android.content.Context;
+import android.graphics.Rect;
+import android.os.Build;
+import android.util.AttributeSet;
+import android.util.FloatProperty;
+import android.widget.FrameLayout;
+
+import com.android.launcher3.DeviceProfile;
+import com.android.launcher3.Insettable;
+import com.android.launcher3.Launcher;
+import com.android.launcher3.R;
+
+/**
+ * {@link RecentsView} used in Launcher activity
+ */
+@TargetApi(Build.VERSION_CODES.O)
+public class LauncherRecentsView extends RecentsView<Launcher> implements Insettable {
+
+    public static final FloatProperty<LauncherRecentsView> TRANSLATION_X_FACTOR =
+            new FloatProperty<LauncherRecentsView>("translationXFactor") {
+
+                @Override
+                public void setValue(LauncherRecentsView view, float v) {
+                    view.setTranslationXFactor(v);
+                }
+
+                @Override
+                public Float get(LauncherRecentsView view) {
+                    return view.mTranslationXFactor;
+                }
+            };
+
+    public static final FloatProperty<LauncherRecentsView> TRANSLATION_Y_FACTOR =
+            new FloatProperty<LauncherRecentsView>("translationYFactor") {
+
+                @Override
+                public void setValue(LauncherRecentsView view, float v) {
+                    view.setTranslationYFactor(v);
+                }
+
+                @Override
+                public Float get(LauncherRecentsView view) {
+                    return view.mTranslationYFactor;
+                }
+            };
+
+    private float mTranslationXFactor;
+    private float mTranslationYFactor;
+    private Rect mPagePadding = new Rect();
+
+    public LauncherRecentsView(Context context) {
+        this(context, null);
+    }
+
+    public LauncherRecentsView(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public LauncherRecentsView(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+        setContentAlpha(0);
+    }
+
+    @Override
+    public void setInsets(Rect insets) {
+        mInsets.set(insets);
+        DeviceProfile dp = mActivity.getDeviceProfile();
+        Rect padding = getPadding(dp, getContext());
+        FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) getLayoutParams();
+        lp.bottomMargin = padding.bottom;
+        setLayoutParams(lp);
+
+        setPadding(padding.left, padding.top, padding.right, 0);
+        mPagePadding.set(padding);
+        mPagePadding.top += getResources().getDimensionPixelSize(R.dimen.task_thumbnail_top_margin);
+    }
+
+    @Override
+    protected void onAllTasksRemoved() {
+        mActivity.getStateManager().goToState(NORMAL);
+    }
+
+    @Override
+    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
+        super.onLayout(changed, left, top, right, bottom);
+
+        int width = right - left;
+        setTranslationX(mTranslationXFactor * (mIsRtl ? -width : width));
+        setTranslationYFactor(mTranslationYFactor);
+    }
+
+    public void setTranslationXFactor(float translationFactor) {
+        mTranslationXFactor = translationFactor;
+        setTranslationX(translationFactor * (mIsRtl ? -getWidth() : getWidth()));
+    }
+
+    public float getTranslationXFactor() {
+        return mTranslationXFactor;
+    }
+
+    public void setTranslationYFactor(float translationFactor) {
+        mTranslationYFactor = translationFactor;
+        setTranslationY(mTranslationYFactor * (mPagePadding.bottom - mPagePadding.top));
+    }
+
+    public float getTranslationYFactor() {
+        return mTranslationYFactor;
+    }
+}

quickstep/src/com/android/quickstep/views/RecentsView.java

@@ -0,0 +1,711 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.quickstep.views;
+
+import static com.android.launcher3.anim.Interpolators.ACCEL;
+import static com.android.launcher3.anim.Interpolators.ACCEL_2;
+import static com.android.launcher3.anim.Interpolators.FAST_OUT_SLOW_IN;
+import static com.android.launcher3.anim.Interpolators.LINEAR;
+
+import android.animation.AnimatorSet;
+import android.animation.ObjectAnimator;
+import android.animation.TimeInterpolator;
+import android.animation.ValueAnimator;
+import android.annotation.TargetApi;
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
+import android.graphics.Rect;
+import android.os.Build;
+import android.util.ArraySet;
+import android.util.AttributeSet;
+import android.util.FloatProperty;
+import android.util.SparseBooleanArray;
+import android.view.KeyEvent;
+import android.view.LayoutInflater;
+import android.view.View;
+
+import com.android.launcher3.BaseActivity;
+import com.android.launcher3.DeviceProfile;
+import com.android.launcher3.PagedView;
+import com.android.launcher3.R;
+import com.android.launcher3.Utilities;
+import com.android.launcher3.anim.AnimatorPlaybackController;
+import com.android.launcher3.config.FeatureFlags;
+import com.android.quickstep.PendingAnimation;
+import com.android.quickstep.QuickScrubController;
+import com.android.quickstep.RecentsModel;
+import com.android.systemui.shared.recents.model.RecentsTaskLoadPlan;
+import com.android.systemui.shared.recents.model.RecentsTaskLoader;
+import com.android.systemui.shared.recents.model.Task;
+import com.android.systemui.shared.recents.model.TaskStack;
+import com.android.systemui.shared.recents.model.ThumbnailData;
+import com.android.systemui.shared.system.ActivityManagerWrapper;
+import com.android.systemui.shared.system.TaskStackChangeListener;
+import com.android.systemui.shared.system.WindowManagerWrapper;
+
+import java.util.ArrayList;
+
+/**
+ * A list of recent tasks.
+ */
+@TargetApi(Build.VERSION_CODES.P)
+public abstract class RecentsView<T extends BaseActivity>
+        extends PagedView implements OnSharedPreferenceChangeListener {
+
+    public static final FloatProperty<RecentsView> CONTENT_ALPHA =
+            new FloatProperty<RecentsView>("contentAlpha") {
+
+
+        @Override
+        public void setValue(RecentsView recentsView, float v) {
+            recentsView.setContentAlpha(v);
+        }
+
+        @Override
+        public Float get(RecentsView recentsView) {
+            return recentsView.mContentAlpha;
+        }
+    };
+
+    private static final String PREF_FLIP_RECENTS = "pref_flip_recents";
+    private static final int DISMISS_TASK_DURATION = 300;
+
+    private static final Rect sTempStableInsets = new Rect();
+
+    protected final T mActivity;
+    private final QuickScrubController mQuickScrubController;
+    private final float mFastFlingVelocity;
+    private final RecentsModel mModel;
+
+    private final ScrollState mScrollState = new ScrollState();
+    // Keeps track of the previously known visible tasks for purposes of loading/unloading task data
+    private final SparseBooleanArray mHasVisibleTaskData = new SparseBooleanArray();
+
+    /**
+     * TODO: Call reloadIdNeeded in onTaskStackChanged.
+     */
+    private final TaskStackChangeListener mTaskStackListener = new TaskStackChangeListener() {
+        @Override
+        public void onTaskSnapshotChanged(int taskId, ThumbnailData snapshot) {
+            for (int i = 0; i < getChildCount(); i++) {
+                final TaskView taskView = (TaskView) getChildAt(i);
+                if (taskView.getTask().key.id == taskId) {
+                    taskView.getThumbnail().setThumbnail(taskView.getTask(), snapshot);
+                    return;
+                }
+            }
+        }
+    };
+
+    private int mLoadPlanId = -1;
+
+    // Only valid until the launcher state changes to NORMAL
+    private int mRunningTaskId = -1;
+
+    private boolean mFirstTaskIconScaledDown = false;
+
+    private boolean mOverviewStateEnabled;
+    private boolean mTaskStackListenerRegistered;
+    private Runnable mNextPageSwitchRunnable;
+
+    private PendingAnimation mPendingAnimation;
+
+    private float mContentAlpha = 1;
+
+    // Keeps track of task views whose visual state should not be reset
+    private ArraySet<TaskView> mIgnoreResetTaskViews = new ArraySet<>();
+
+    public RecentsView(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+        setPageSpacing(getResources().getDimensionPixelSize(R.dimen.recents_page_spacing));
+        enableFreeScroll(true);
+        setClipToOutline(true);
+
+        mFastFlingVelocity = getResources()
+                .getDimensionPixelSize(R.dimen.recents_fast_fling_velocity);
+        mActivity = (T) BaseActivity.fromContext(context);
+        mQuickScrubController = new QuickScrubController(mActivity, this);
+        mModel = RecentsModel.getInstance(context);
+
+        onSharedPreferenceChanged(Utilities.getPrefs(context), PREF_FLIP_RECENTS);
+    }
+
+    @Override
+    public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String s) {
+        if (s.equals(PREF_FLIP_RECENTS)) {
+            mIsRtl = Utilities.isRtl(getResources());
+            if (sharedPreferences.getBoolean(PREF_FLIP_RECENTS, false)) {
+                mIsRtl = !mIsRtl;
+            }
+            setLayoutDirection(mIsRtl ? View.LAYOUT_DIRECTION_RTL : View.LAYOUT_DIRECTION_LTR);
+        }
+    }
+
+    public boolean isRtl() {
+        return mIsRtl;
+    }
+
+    public TaskView updateThumbnail(int taskId, ThumbnailData thumbnailData) {
+        for (int i = 0; i < getChildCount(); i++) {
+            final TaskView taskView = (TaskView) getChildAt(i);
+            if (taskView.getTask().key.id == taskId) {
+                taskView.onTaskDataLoaded(taskView.getTask(), thumbnailData);
+                taskView.setAlpha(1);
+                return taskView;
+            }
+        }
+        return null;
+    }
+
+    @Override
+    protected void onWindowVisibilityChanged(int visibility) {
+        super.onWindowVisibilityChanged(visibility);
+        updateTaskStackListenerState();
+    }
+
+    @Override
+    protected void onAttachedToWindow() {
+        super.onAttachedToWindow();
+        updateTaskStackListenerState();
+        Utilities.getPrefs(getContext()).registerOnSharedPreferenceChangeListener(this);
+    }
+
+    @Override
+    protected void onDetachedFromWindow() {
+        super.onDetachedFromWindow();
+        updateTaskStackListenerState();
+        Utilities.getPrefs(getContext()).unregisterOnSharedPreferenceChangeListener(this);
+    }
+
+    @Override
+    public void onViewRemoved(View child) {
+        super.onViewRemoved(child);
+
+        // Clear the task data for the removed child if it was visible
+        Task task = ((TaskView) child).getTask();
+        if (mHasVisibleTaskData.get(task.key.id)) {
+            mHasVisibleTaskData.delete(task.key.id);
+            RecentsTaskLoader loader = mModel.getRecentsTaskLoader();
+            loader.unloadTaskData(task);
+            loader.getHighResThumbnailLoader().onTaskInvisible(task);
+        }
+    }
+
+    public boolean isTaskViewVisible(TaskView tv) {
+        // For now, just check if it's the active task or an adjacent task
+        return Math.abs(indexOfChild(tv) - getNextPage()) <= 1;
+    }
+
+    public TaskView getTaskView(int taskId) {
+        for (int i = 0; i < getChildCount(); i++) {
+            TaskView tv = (TaskView) getChildAt(i);
+            if (tv.getTask().key.id == taskId) {
+                return tv;
+            }
+        }
+        return null;
+    }
+
+    public void setOverviewStateEnabled(boolean enabled) {
+        mOverviewStateEnabled = enabled;
+        updateTaskStackListenerState();
+    }
+
+    public void setNextPageSwitchRunnable(Runnable r) {
+        mNextPageSwitchRunnable = r;
+    }
+
+    @Override
+    protected void onPageEndTransition() {
+        super.onPageEndTransition();
+        if (mNextPageSwitchRunnable != null) {
+            mNextPageSwitchRunnable.run();
+            mNextPageSwitchRunnable = null;
+        }
+    }
+
+    private void applyLoadPlan(RecentsTaskLoadPlan loadPlan) {
+        if (mPendingAnimation != null) {
+            mPendingAnimation.addEndListener((b) -> applyLoadPlan(loadPlan));
+            return;
+        }
+        TaskStack stack = loadPlan != null ? loadPlan.getTaskStack() : null;
+        if (stack == null) {
+            removeAllViews();
+            return;
+        }
+
+        int oldChildCount = getChildCount();
+
+        // Ensure there are as many views as there are tasks in the stack (adding and trimming as
+        // necessary)
+        final LayoutInflater inflater = LayoutInflater.from(getContext());
+        final ArrayList<Task> tasks = new ArrayList<>(stack.getTasks());
+
+        final int requiredChildCount = tasks.size();
+        for (int i = getChildCount(); i < requiredChildCount; i++) {
+            final TaskView taskView = (TaskView) inflater.inflate(R.layout.task, this, false);
+            addView(taskView);
+        }
+        while (getChildCount() > requiredChildCount) {
+            final TaskView taskView = (TaskView) getChildAt(getChildCount() - 1);
+            removeView(taskView);
+        }
+
+        // Unload existing visible task data
+        unloadVisibleTaskData();
+
+        // Rebind and reset all task views
+        for (int i = requiredChildCount - 1; i >= 0; i--) {
+            final int pageIndex = requiredChildCount - i - 1;
+            final Task task = tasks.get(i);
+            final TaskView taskView = (TaskView) getChildAt(pageIndex);
+            taskView.bind(task);
+        }
+        resetTaskVisuals();
+        applyIconScale(false /* animate */);
+
+        if (oldChildCount != getChildCount()) {
+            mQuickScrubController.snapToNextTaskIfAvailable();
+        }
+    }
+
+    public void resetTaskVisuals() {
+        for (int i = getChildCount() - 1; i >= 0; i--) {
+            TaskView taskView = (TaskView) getChildAt(i);
+            if (!mIgnoreResetTaskViews.contains(taskView)) {
+                taskView.resetVisualProperties();
+            }
+        }
+
+        updateCurveProperties();
+        // Update the set of visible task's data
+        loadVisibleTaskData();
+    }
+
+    private void updateTaskStackListenerState() {
+        boolean registerStackListener = mOverviewStateEnabled && isAttachedToWindow()
+                && getWindowVisibility() == VISIBLE;
+        if (registerStackListener != mTaskStackListenerRegistered) {
+            if (registerStackListener) {
+                ActivityManagerWrapper.getInstance()
+                        .registerTaskStackListener(mTaskStackListener);
+                reloadIfNeeded();
+            } else {
+                ActivityManagerWrapper.getInstance()
+                        .unregisterTaskStackListener(mTaskStackListener);
+            }
+            mTaskStackListenerRegistered = registerStackListener;
+        }
+    }
+
+    protected static Rect getPadding(DeviceProfile profile, Context context) {
+        WindowManagerWrapper.getInstance().getStableInsets(sTempStableInsets);
+        Rect padding = new Rect(profile.workspacePadding);
+
+        float taskWidth = profile.widthPx - sTempStableInsets.left - sTempStableInsets.right;
+        float taskHeight = profile.heightPx - sTempStableInsets.top - sTempStableInsets.bottom;
+
+        float overviewHeight, overviewWidth;
+        if (profile.isVerticalBarLayout()) {
+            float maxPadding = Math.max(padding.left, padding.right);
+
+            // Use the same padding on both sides for symmetry.
+            float availableWidth = taskWidth - 2 * maxPadding;
+            float availableHeight = profile.availableHeightPx - padding.top - padding.bottom
+                    - sTempStableInsets.top;
+            float scaledRatio = Math.min(availableWidth / taskWidth, availableHeight / taskHeight);
+            overviewHeight = taskHeight * scaledRatio;
+            overviewWidth = taskWidth * scaledRatio;
+
+        } else {
+            overviewHeight = profile.availableHeightPx - padding.top - padding.bottom
+                    - sTempStableInsets.top;
+            overviewWidth = taskWidth * overviewHeight / taskHeight;
+        }
+
+        padding.bottom = profile.availableHeightPx - padding.top - sTempStableInsets.top
+                - Math.round(overviewHeight);
+        padding.left = padding.right = (int) ((profile.availableWidthPx - overviewWidth) / 2);
+        return padding;
+    }
+
+    public static void getPageRect(DeviceProfile grid, Context context, Rect outRect) {
+        Rect targetPadding = getPadding(grid, context);
+        Rect insets = grid.getInsets();
+        outRect.set(
+                targetPadding.left + insets.left,
+                targetPadding.top + insets.top,
+                grid.widthPx - targetPadding.right - insets.right,
+                grid.heightPx - targetPadding.bottom - insets.bottom);
+        outRect.top += context.getResources()
+                .getDimensionPixelSize(R.dimen.task_thumbnail_top_margin);
+    }
+
+    @Override
+    protected boolean computeScrollHelper() {
+        boolean scrolling = super.computeScrollHelper();
+        boolean isFlingingFast = false;
+        updateCurveProperties();
+        if (scrolling || (mTouchState == TOUCH_STATE_SCROLLING)) {
+            if (scrolling) {
+                // Check if we are flinging quickly to disable high res thumbnail loading
+                isFlingingFast = mScroller.getCurrVelocity() > mFastFlingVelocity;
+            }
+
+            // After scrolling, update the visible task's data
+            loadVisibleTaskData();
+        }
+
+        // Update the high res thumbnail loader
+        RecentsTaskLoader loader = mModel.getRecentsTaskLoader();
+        loader.getHighResThumbnailLoader().setFlingingFast(isFlingingFast);
+        return scrolling;
+    }
+
+    /**
+     * Scales and adjusts translation of adjacent pages as if on a curved carousel.
+     */
+    public void updateCurveProperties() {
+        if (getPageCount() == 0 || getPageAt(0).getMeasuredWidth() == 0) {
+            return;
+        }
+        final int halfPageWidth = getNormalChildWidth() / 2;
+        final int screenCenter = mInsets.left + getPaddingLeft() + getScrollX() + halfPageWidth;
+        final int halfScreenWidth = getMeasuredWidth() / 2;
+        final int pageSpacing = mPageSpacing;
+
+        final int pageCount = getPageCount();
+        for (int i = 0; i < pageCount; i++) {
+            View page = getPageAt(i);
+            float pageCenter = page.getLeft() + page.getTranslationX() + halfPageWidth;
+            float distanceFromScreenCenter = screenCenter - pageCenter;
+            float distanceToReachEdge = halfScreenWidth + halfPageWidth + pageSpacing;
+            mScrollState.linearInterpolation = Math.min(1,
+                    Math.abs(distanceFromScreenCenter) / distanceToReachEdge);
+            ((PageCallbacks) page).onPageScroll(mScrollState);
+        }
+    }
+
+    /**
+     * Iterates through all thet asks, and loads the associated task data for newly visible tasks,
+     * and unloads the associated task data for tasks that are no longer visible.
+     */
+    public void loadVisibleTaskData() {
+        RecentsTaskLoader loader = mModel.getRecentsTaskLoader();
+        int centerPageIndex = getPageNearestToCenterOfScreen();
+        int lower = Math.max(0, centerPageIndex - 2);
+        int upper = Math.min(centerPageIndex + 2, getChildCount() - 1);
+        int numChildren = getChildCount();
+
+        // Update the task data for the in/visible children
+        for (int i = 0; i < numChildren; i++) {
+            TaskView taskView = (TaskView) getChildAt(i);
+            Task task = taskView.getTask();
+            boolean visible = lower <= i && i <= upper;
+            if (visible) {
+                if (!mHasVisibleTaskData.get(task.key.id)) {
+                    loader.loadTaskData(task);
+                    loader.getHighResThumbnailLoader().onTaskVisible(task);
+                }
+                mHasVisibleTaskData.put(task.key.id, visible);
+            } else {
+                if (mHasVisibleTaskData.get(task.key.id)) {
+                    loader.unloadTaskData(task);
+                    loader.getHighResThumbnailLoader().onTaskInvisible(task);
+                }
+                mHasVisibleTaskData.delete(task.key.id);
+            }
+        }
+    }
+
+    /**
+     * Unloads any associated data from the currently visible tasks
+     */
+    private void unloadVisibleTaskData() {
+        RecentsTaskLoader loader = mModel.getRecentsTaskLoader();
+        for (int i = 0; i < mHasVisibleTaskData.size(); i++) {
+            if (mHasVisibleTaskData.valueAt(i)) {
+                TaskView taskView = getTaskView(mHasVisibleTaskData.keyAt(i));
+                Task task = taskView.getTask();
+                loader.unloadTaskData(task);
+                loader.getHighResThumbnailLoader().onTaskInvisible(task);
+            }
+        }
+        mHasVisibleTaskData.clear();
+    }
+
+
+    protected abstract void onAllTasksRemoved();
+
+    public void reset() {
+        unloadVisibleTaskData();
+        mRunningTaskId = -1;
+        setCurrentPage(0);
+    }
+
+    /**
+     * Reloads the view if anything in recents changed.
+     */
+    public void reloadIfNeeded() {
+        if (!mModel.isLoadPlanValid(mLoadPlanId)) {
+            mLoadPlanId = mModel.loadTasks(mRunningTaskId, this::applyLoadPlan);
+        }
+    }
+
+    /**
+     * Ensures that the first task in the view represents {@param task} and reloads the view
+     * if needed. This allows the swipe-up gesture to assume that the first tile always
+     * corresponds to the correct task.
+     * All subsequent calls to reload will keep the task as the first item until {@link #reset()}
+     * is called.
+     * Also scrolls the view to this task
+     */
+    public void showTask(int runningTaskId) {
+        boolean needsReload = false;
+        if (getChildCount() == 0) {
+            needsReload = true;
+            // Add an empty view for now
+            final TaskView taskView = (TaskView) LayoutInflater.from(getContext())
+                    .inflate(R.layout.task, this, false);
+            addView(taskView, 0);
+        }
+        mRunningTaskId = runningTaskId;
+        setCurrentPage(0);
+        if (!needsReload) {
+            needsReload = !mModel.isLoadPlanValid(mLoadPlanId);
+        }
+        if (needsReload) {
+            mLoadPlanId = mModel.loadTasks(runningTaskId, this::applyLoadPlan);
+        } else {
+            loadVisibleTaskData();
+        }
+        getPageAt(mCurrentPage).setAlpha(0);
+    }
+
+    public QuickScrubController getQuickScrubController() {
+        return mQuickScrubController;
+    }
+
+    public void setFirstTaskIconScaledDown(boolean isScaledDown, boolean animate) {
+        if (mFirstTaskIconScaledDown == isScaledDown) {
+            return;
+        }
+        mFirstTaskIconScaledDown = isScaledDown;
+        applyIconScale(animate);
+    }
+
+    private void applyIconScale(boolean animate) {
+        float scale = mFirstTaskIconScaledDown ? 0 : 1;
+        TaskView firstTask = (TaskView) getChildAt(0);
+        if (firstTask != null) {
+            if (animate) {
+                firstTask.animateIconToScale(scale);
+            } else {
+                firstTask.setIconScale(scale);
+            }
+        }
+    }
+
+    public interface PageCallbacks {
+
+        /**
+         * Updates the page UI based on scroll params.
+         */
+        default void onPageScroll(ScrollState scrollState) {};
+    }
+
+    public static class ScrollState {
+
+        /**
+         * The progress from 0 to 1, where 0 is the center
+         * of the screen and 1 is the edge of the screen.
+         */
+        public float linearInterpolation;
+    }
+
+    public void addIgnoreResetTask(TaskView taskView) {
+        mIgnoreResetTaskViews.add(taskView);
+    }
+
+    public void removeIgnoreResetTask(TaskView taskView) {
+        mIgnoreResetTaskViews.remove(taskView);
+    }
+
+    public PendingAnimation createTaskDismissAnimation(TaskView taskView, boolean animateTaskView,
+            boolean removeTask, long duration) {
+        if (FeatureFlags.IS_DOGFOOD_BUILD && mPendingAnimation != null) {
+            throw new IllegalStateException("Another pending animation is still running");
+        }
+        AnimatorSet anim = new AnimatorSet();
+        PendingAnimation pendingAnimation = new PendingAnimation(anim);
+
+        int count = getChildCount();
+        if (count == 0) {
+            return pendingAnimation;
+        }
+
+        int[] oldScroll = new int[count];
+        getPageScrolls(oldScroll, false, SIMPLE_SCROLL_LOGIC);
+
+        int[] newScroll = new int[count];
+        getPageScrolls(newScroll, false, (v) -> v.getVisibility() != GONE && v != taskView);
+
+        int maxScrollDiff = 0;
+        int lastPage = mIsRtl ? 0 : count - 1;
+        if (getChildAt(lastPage) == taskView) {
+            if (count > 1) {
+                int secondLastPage = mIsRtl ? 1 : count - 2;
+                maxScrollDiff = oldScroll[lastPage] - newScroll[secondLastPage];
+            }
+        }
+
+        boolean needsCurveUpdates = false;
+        for (int i = 0; i < count; i++) {
+            View child = getChildAt(i);
+            if (child == taskView) {
+                if (animateTaskView) {
+                    addAnim(ObjectAnimator.ofFloat(taskView, ALPHA, 0), duration, ACCEL_2, anim);
+                    addAnim(ObjectAnimator.ofFloat(taskView, TRANSLATION_Y, -taskView.getHeight()),
+                            duration, LINEAR, anim);
+                }
+            } else {
+                int scrollDiff = newScroll[i] - oldScroll[i] + maxScrollDiff;
+                if (scrollDiff != 0) {
+                    addAnim(ObjectAnimator.ofFloat(child, TRANSLATION_X, scrollDiff),
+                            duration, ACCEL, anim);
+                    needsCurveUpdates = true;
+                }
+            }
+        }
+
+        if (needsCurveUpdates) {
+            ValueAnimator va = ValueAnimator.ofFloat(0, 1);
+            va.addUpdateListener((a) -> updateCurveProperties());
+            anim.play(va);
+        }
+
+        // Add a tiny bit of translation Z, so that it draws on top of other views
+        if (animateTaskView) {
+            taskView.setTranslationZ(0.1f);
+        }
+
+        mPendingAnimation = pendingAnimation;
+        mPendingAnimation.addEndListener((isSuccess) -> {
+           if (isSuccess) {
+               if (removeTask) {
+                   ActivityManagerWrapper.getInstance().removeTask(taskView.getTask().key.id);
+               }
+               removeView(taskView);
+               if (getChildCount() == 0) {
+                   onAllTasksRemoved();
+               }
+           }
+           resetTaskVisuals();
+           mPendingAnimation = null;
+        });
+        return pendingAnimation;
+    }
+
+    private static void addAnim(ObjectAnimator anim, long duration,
+            TimeInterpolator interpolator, AnimatorSet set) {
+        anim.setDuration(duration).setInterpolator(interpolator);
+        set.play(anim);
+    }
+
+    private void snapToPageRelative(int delta) {
+        snapToPage((getNextPage() + getPageCount() + delta) % getPageCount());
+    }
+
+    @Override
+    public void onVisibilityAggregated(boolean isVisible) {
+        super.onVisibilityAggregated(isVisible);
+        if (isVisible && !isFocused()) {
+            // Having focus, even in touch mode, keeps us from losing [Alt+]Tab by preventing
+            // switching to keyboard mode.
+            requestFocus();
+        }
+    }
+
+    public void dismissTask(TaskView taskView, boolean animateTaskView, boolean removeTask) {
+        PendingAnimation pendingAnim = createTaskDismissAnimation(taskView, animateTaskView,
+                removeTask, DISMISS_TASK_DURATION);
+        AnimatorPlaybackController controller = AnimatorPlaybackController.wrap(
+                pendingAnim.anim, DISMISS_TASK_DURATION);
+        controller.dispatchOnStart();
+        controller.setEndAction(() -> pendingAnim.finish(true));
+        controller.getAnimationPlayer().setInterpolator(FAST_OUT_SLOW_IN);
+        controller.start();
+    }
+
+    @Override
+    public boolean dispatchKeyEvent(KeyEvent event) {
+        if (event.getAction() == KeyEvent.ACTION_DOWN) {
+            switch (event.getKeyCode()) {
+                case KeyEvent.KEYCODE_TAB:
+                    snapToPageRelative(event.isShiftPressed() ? -1 : 1);
+                    return true;
+                case KeyEvent.KEYCODE_DPAD_RIGHT:
+                    snapToPageRelative(mIsRtl ? -1 : 1);
+                    return true;
+                case KeyEvent.KEYCODE_DPAD_LEFT:
+                    snapToPageRelative(mIsRtl ? 1 : -1);
+                    return true;
+                case KeyEvent.KEYCODE_DEL:
+                case KeyEvent.KEYCODE_FORWARD_DEL:
+                    dismissTask((TaskView) getChildAt(getNextPage()), true /*animateTaskView*/,
+                            true /*removeTask*/);
+                    return true;
+                case KeyEvent.KEYCODE_NUMPAD_DOT:
+                    if (event.isAltPressed()) {
+                        // Numpad DEL pressed while holding Alt.
+                        dismissTask((TaskView) getChildAt(getNextPage()), true /*animateTaskView*/,
+                                true /*removeTask*/);
+                        return true;
+                    }
+            }
+        }
+        return super.dispatchKeyEvent(event);
+    }
+
+    public void snapToTaskAfterNext() {
+        snapToPageRelative(1);
+    }
+
+    public void launchNextTask() {
+        final TaskView nextTask = (TaskView) getChildAt(getNextPage());
+        nextTask.launchTask(true);
+    }
+
+    public void setContentAlpha(float alpha) {
+        if (mContentAlpha == alpha) {
+            return;
+        }
+        mContentAlpha = alpha;
+        for (int i = getChildCount() - 1; i >= 0; i--) {
+            getChildAt(i).setAlpha(alpha);
+        }
+        setVisibility(alpha > 0 ? VISIBLE : GONE);
+    }
+
+    @Override
+    public void onViewAdded(View child) {
+        super.onViewAdded(child);
+        child.setAlpha(mContentAlpha);
+    }
+}

quickstep/src/com/android/quickstep/views/TaskMenuView.java

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.android.quickstep;
+package com.android.quickstep.views;
 
 import android.animation.Animator;
 import android.animation.AnimatorSet;
@@ -32,14 +32,16 @@ import android.view.animation.AccelerateDecelerateInterpolator;
 import android.widget.TextView;
 
 import com.android.launcher3.AbstractFloatingView;
-import com.android.launcher3.Launcher;
+import com.android.launcher3.BaseDraggingActivity;
 import com.android.launcher3.LauncherAnimUtils;
 import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
 import com.android.launcher3.anim.AnimationSuccessListener;
 import com.android.launcher3.anim.RoundedRectRevealOutlineProvider;
-import com.android.launcher3.dragndrop.DragLayer;
 import com.android.launcher3.shortcuts.DeepShortcutView;
+import com.android.launcher3.views.BaseDragLayer;
+import com.android.quickstep.TaskSystemShortcut;
+import com.android.quickstep.TaskUtils;
 
 /**
  * Contains options for a recent task when long-pressing its icon.
@@ -58,7 +60,7 @@ public class TaskMenuView extends AbstractFloatingView {
 
     private static final long OPEN_CLOSE_DURATION = 220;
 
-    private Launcher mLauncher;
+    private BaseDraggingActivity mActivity;
     private TextView mTaskIconAndName;
     private AnimatorSet mOpenCloseAnimator;
     private TaskView mTaskView;
@@ -70,7 +72,7 @@ public class TaskMenuView extends AbstractFloatingView {
     public TaskMenuView(Context context, AttributeSet attrs, int defStyleAttr) {
         super(context, attrs, defStyleAttr);
 
-        mLauncher = Launcher.getLauncher(context);
+        mActivity = BaseDraggingActivity.fromContext(context);
         setClipToOutline(true);
         setOutlineProvider(new ViewOutlineProvider() {
             @Override
@@ -90,7 +92,7 @@ public class TaskMenuView extends AbstractFloatingView {
     @Override
     public boolean onControllerInterceptTouchEvent(MotionEvent ev) {
         if (ev.getAction() == MotionEvent.ACTION_DOWN) {
-            DragLayer dl = mLauncher.getDragLayer();
+            BaseDragLayer dl = mActivity.getDragLayer();
             if (!dl.isEventOverView(this, ev)) {
                 // TODO: log this once we have a new container type for it?
                 close(true);
@@ -120,9 +122,9 @@ public class TaskMenuView extends AbstractFloatingView {
     }
 
     public static boolean showForTask(TaskView taskView) {
-        Launcher launcher = Launcher.getLauncher(taskView.getContext());
-        final TaskMenuView taskMenuView = (TaskMenuView) launcher.getLayoutInflater().inflate(
-                        R.layout.task_menu, launcher.getDragLayer(), false);
+        BaseDraggingActivity activity = BaseDraggingActivity.fromContext(taskView.getContext());
+        final TaskMenuView taskMenuView = (TaskMenuView) activity.getLayoutInflater().inflate(
+                        R.layout.task_menu, activity.getDragLayer(), false);
         return taskMenuView.populateAndShowForTask(taskView);
     }
 
@@ -130,7 +132,7 @@ public class TaskMenuView extends AbstractFloatingView {
         if (isAttachedToWindow()) {
             return false;
         }
-        mLauncher.getDragLayer().addView(this);
+        mActivity.getDragLayer().addView(this);
         mTaskView = taskView;
         addMenuOptions(mTaskView);
         orientAroundTaskView(mTaskView);
@@ -143,11 +145,11 @@ public class TaskMenuView extends AbstractFloatingView {
         int iconSize = getResources().getDimensionPixelSize(R.dimen.task_thumbnail_icon_size);
         icon.setBounds(0, 0, iconSize, iconSize);
         mTaskIconAndName.setCompoundDrawables(null, icon, null, null);
-        mTaskIconAndName.setText(TaskUtils.getTitle(mLauncher, taskView.getTask()));
+        mTaskIconAndName.setText(TaskUtils.getTitle(getContext(), taskView.getTask()));
         mTaskIconAndName.setOnClickListener(v -> close(true));
 
         for (TaskSystemShortcut menuOption : MENU_OPTIONS) {
-            OnClickListener onClickListener = menuOption.getOnClickListener(mLauncher, taskView);
+            OnClickListener onClickListener = menuOption.getOnClickListener(mActivity, taskView);
             if (onClickListener != null) {
                 addMenuOption(menuOption, onClickListener);
             }
@@ -155,7 +157,7 @@ public class TaskMenuView extends AbstractFloatingView {
     }
 
     private void addMenuOption(TaskSystemShortcut menuOption, OnClickListener onClickListener) {
-        DeepShortcutView menuOptionView = (DeepShortcutView) mLauncher.getLayoutInflater().inflate(
+        DeepShortcutView menuOptionView = (DeepShortcutView) mActivity.getLayoutInflater().inflate(
                 R.layout.system_shortcut, this, false);
         menuOptionView.getIconView().setBackgroundResource(menuOption.iconResId);
         menuOptionView.getBubbleText().setText(menuOption.labelResId);
@@ -165,8 +167,8 @@ public class TaskMenuView extends AbstractFloatingView {
 
     private void orientAroundTaskView(TaskView taskView) {
         measure(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED);
-        mLauncher.getDragLayer().getDescendantRectRelativeToSelf(taskView, sTempRect);
-        Rect insets = mLauncher.getDragLayer().getInsets();
+        mActivity.getDragLayer().getDescendantRectRelativeToSelf(taskView, sTempRect);
+        Rect insets = mActivity.getDragLayer().getInsets();
         int x = sTempRect.left + (sTempRect.width() - getMeasuredWidth()) / 2 - insets.left;
         setX(Utilities.isRtl(getResources()) ? -x : x);
         setY(sTempRect.top - mTaskIconAndName.getPaddingTop() - insets.top);
@@ -209,7 +211,7 @@ public class TaskMenuView extends AbstractFloatingView {
 
     private void closeComplete() {
         mIsOpen = false;
-        mLauncher.getDragLayer().removeView(this);
+        mActivity.getDragLayer().removeView(this);
     }
 
     private RoundedRectRevealOutlineProvider createOpenCloseOutlineProvider() {

quickstep/src/com/android/quickstep/views/TaskThumbnailView.java

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.android.quickstep;
+package com.android.quickstep.views;
 
 import android.content.Context;
 import android.content.res.Configuration;
@@ -33,9 +33,10 @@ import android.graphics.Shader;
 import android.util.AttributeSet;
 import android.view.View;
 
+import com.android.launcher3.BaseActivity;
 import com.android.launcher3.DeviceProfile;
-import com.android.launcher3.Launcher;
 import com.android.launcher3.R;
+import com.android.quickstep.TaskOverlayFactory;
 import com.android.quickstep.TaskOverlayFactory.TaskOverlay;
 import com.android.systemui.shared.recents.model.Task;
 import com.android.systemui.shared.recents.model.ThumbnailData;
@@ -74,6 +75,7 @@ public class TaskThumbnailView extends View {
         mCornerRadius = getResources().getDimension(R.dimen.task_corner_radius);
         mFadeLength = getResources().getDimension(R.dimen.task_fade_length);
         mOverlay = TaskOverlayFactory.get(context).createOverlay(this);
+        mPaint.setFilterBitmap(true);
     }
 
     public void bind() {
@@ -151,7 +153,8 @@ public class TaskThumbnailView extends View {
             } else {
                 final Configuration configuration =
                         getContext().getApplicationContext().getResources().getConfiguration();
-                final DeviceProfile profile = Launcher.getLauncher(getContext()).getDeviceProfile();
+                final DeviceProfile profile = BaseActivity.fromContext(getContext())
+                        .getDeviceProfile();
                 if (configuration.orientation == mThumbnailData.orientation) {
                     // If we are in the same orientation as the screenshot, just scale it to the
                     // width of the task view

quickstep/src/com/android/quickstep/views/TaskView.java

@@ -14,10 +14,7 @@
  * limitations under the License.
  */
 
-package com.android.quickstep;
-
-import static com.android.quickstep.RecentsView.SCROLL_TYPE_TASK;
-import static com.android.quickstep.RecentsView.SCROLL_TYPE_WORKSPACE;
+package com.android.quickstep.views;
 
 import android.animation.TimeInterpolator;
 import android.app.ActivityOptions;
@@ -31,10 +28,10 @@ import android.view.ViewOutlineProvider;
 import android.widget.FrameLayout;
 import android.widget.ImageView;
 
-import com.android.launcher3.Launcher;
+import com.android.launcher3.BaseDraggingActivity;
 import com.android.launcher3.R;
-import com.android.quickstep.RecentsView.PageCallbacks;
-import com.android.quickstep.RecentsView.ScrollState;
+import com.android.quickstep.views.RecentsView.PageCallbacks;
+import com.android.quickstep.views.RecentsView.ScrollState;
 import com.android.systemui.shared.recents.model.Task;
 import com.android.systemui.shared.recents.model.Task.TaskCallbacks;
 import com.android.systemui.shared.recents.model.ThumbnailData;
@@ -47,17 +44,20 @@ import java.util.function.Consumer;
  */
 public class TaskView extends FrameLayout implements TaskCallbacks, PageCallbacks {
 
-    /** Designates how "curvy" the carousel is from 0 to 1, where 0 is a straight line. */
-    public static final float CURVE_FACTOR = 0.25f;
-    /** A circular curve of x from 0 to 1, where 0 is the center of the screen and 1 is the edge. */
-    public static final TimeInterpolator CURVE_INTERPOLATOR
-            = x -> (float) (1 - Math.sqrt(1 - Math.pow(x, 2)));
+    /** A curve of x from 0 to 1, where 0 is the center of the screen and 1 is the edge. */
+    private static final TimeInterpolator CURVE_INTERPOLATOR
+            = x -> (float) -Math.cos(x * Math.PI) / 2f + .5f;
 
     /**
      * The alpha of a black scrim on a page in the carousel as it leaves the screen.
      * In the resting position of the carousel, the adjacent pages have about half this scrim.
      */
-    private static final float MAX_PAGE_SCRIM_ALPHA = 0.8f;
+    private static final float MAX_PAGE_SCRIM_ALPHA = 0.4f;
+
+    /**
+     * How much to scale down pages near the edge of the screen.
+     */
+    private static final float EDGE_SCALE_DOWN_FACTOR = 0.03f;
 
     private static final long SCALE_ICON_DURATION = 120;
 
@@ -96,6 +96,7 @@ public class TaskView extends FrameLayout implements TaskCallbacks, PageCallback
         mTask = task;
         mSnapshotView.bind();
         task.addCallback(this);
+        setContentDescription(task.titleDescription);
     }
 
     public Task getTask() {
@@ -115,7 +116,8 @@ public class TaskView extends FrameLayout implements TaskCallbacks, PageCallback
         if (mTask != null) {
             final ActivityOptions opts;
             if (animate) {
-                opts = Launcher.getLauncher(getContext()).getActivityLaunchOptions(this, false);
+                opts = BaseDraggingActivity.fromContext(getContext())
+                        .getActivityLaunchOptions(this, false);
             } else {
                 opts = ActivityOptions.makeCustomAnimation(getContext(), 0, 0);
             }
@@ -159,38 +161,26 @@ public class TaskView extends FrameLayout implements TaskCallbacks, PageCallback
         setScaleY(1f);
         setTranslationX(0f);
         setTranslationY(0f);
+        setTranslationZ(0);
         setAlpha(1f);
     }
 
     @Override
-    public int onPageScroll(ScrollState scrollState) {
+    public void onPageScroll(ScrollState scrollState) {
         float curveInterpolation =
                 CURVE_INTERPOLATOR.getInterpolation(scrollState.linearInterpolation);
-        float scale = 1 - curveInterpolation * CURVE_FACTOR;
-        setScaleX(scale);
-        setScaleY(scale);
-
-        // Make sure the biggest card (i.e. the one in front) shows on top of the adjacent ones.
-        setTranslationZ(scale);
 
         mSnapshotView.setDimAlpha(1 - curveInterpolation * MAX_PAGE_SCRIM_ALPHA);
 
-        float translation =
-                scrollState.distanceFromScreenCenter * curveInterpolation * CURVE_FACTOR;
+        float scale = 1 - curveInterpolation * EDGE_SCALE_DOWN_FACTOR;
+        setScaleX(scale);
+        setScaleY(scale);
+    }
 
-        if (scrollState.lastScrollType == SCROLL_TYPE_WORKSPACE) {
-            // Make sure that the task cards do not overlap with the workspace card
-            float min = scrollState.halfPageWidth * (1 - scale);
-            if (scrollState.isRtl) {
-                setTranslationX(Math.min(translation, min) - scrollState.prevPageExtraWidth);
-            } else {
-                setTranslationX(Math.max(translation, -min) + scrollState.prevPageExtraWidth);
-            }
-        } else {
-            setTranslationX(translation);
-        }
-        scrollState.prevPageExtraWidth = 0;
-        return SCROLL_TYPE_TASK;
+    @Override
+    public boolean hasOverlappingRendering() {
+        // TODO: Clip-out the icon region from the thumbnail, since they are overlapping.
+        return false;
     }
 
     private static final class TaskOutlineProvider extends ViewOutlineProvider {

res/drawable-v24/ic_setup_shadow.xml

@@ -15,5 +15,5 @@
 -->
 <com.android.launcher3.graphics.ShadowDrawable
     xmlns:android="http://schemas.android.com/apk/res/android"
-    android:src="@drawable/ic_info_no_shadow"
+    android:src="@drawable/ic_setting"
     android:elevation="@dimen/drop_target_shadow_elevation" />

res/drawable/bg_all_apps_searchbox.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2016 The Android Open Source Project
+<!-- Copyright (C) 2018 The Android Open Source Project
 
      Licensed under the Apache License, Version 2.0 (the "License");
      you may not use this file except in compliance with the License.
@@ -13,8 +13,7 @@
      See the License for the specific language governing permissions and
      limitations under the License.
 -->
-<shape xmlns:android="http://schemas.android.com/apk/res/android"
-       android:shape="rectangle">
-    <solid android:color="?android:attr/colorAccent" />
-    <size android:height="1dp" />
+<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
+    <solid android:color="?attr/popupColorPrimary" />
+    <corners android:radius="2dp" />
 </shape>

res/drawable/ic_drag_indicator.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2018 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:height="2dp"
+        android:width="16dp"
+        android:viewportHeight="2.0"
+        android:viewportWidth="16.0">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M1,0h14c0.55,0,1,0.45,1,1s-0.45,1-1,1H1C0.45,2,0,1.55,0,1S0.45,0,1,0z"/>
+</vector>

res/drawable/ic_setting.xml

@@ -17,9 +17,10 @@ Copyright (C) 2016 The Android Open Source Project
         android:width="@dimen/options_menu_icon_size"
         android:height="@dimen/options_menu_icon_size"
         android:viewportWidth="48.0"
-        android:viewportHeight="48.0">
+        android:viewportHeight="48.0"
+        android:tint="?android:attr/textColorPrimary" >
     <path
-        android:fillColor="?android:attr/textColorPrimary"
+        android:fillColor="#FFFFFFFF"
         android:pathData="M42.8,28.4l-3.88-2.9c0.06-0.5,0.08-1,0.08-1.52s-0.02-1.02-0.08-1.52l3.88-2.86c0.84-0.62,1.04-1.88,
         0.48-2.82l-3.2-5.52c-0.56-0.96-1.76-1.4-2.72-1l-4.28,1.82c-0.96-0.74-2.02-1.36-3.14-1.84l-0.54-4.4C29.28,4.8,28.28,4,
         27.18,4h-6.36c-1.1,0-2.1,0.8-2.22,1.84l-0.52,4.38c-1.14,0.48-2.2,1.1-3.16,1.84l-4.28-1.82c-0.96-0.4-2.16,0.04-2.72,

res/layout/all_apps.xml

@@ -29,20 +29,13 @@
 
     <include layout="@layout/all_apps_rv_layout" />
 
-    <include layout="@layout/all_apps_fast_scroller" />
-
     <include layout="@layout/all_apps_floating_header" />
 
     <!-- Note: we are reusing/repurposing a system attribute for search layout, because of a
      platform bug, which prevents using custom attributes in <include> tag -->
     <include
         android:id="@id/search_container_all_apps"
-        layout="?android:attr/keyboardLayout"/>
+        layout="@layout/search_container_all_apps"/>
 
-    <View
-        android:id="@+id/nav_bar_bg"
-        android:layout_width="match_parent"
-        android:layout_height="0dp"
-        android:layout_alignParentBottom="true"
-        android:background="?attr/allAppsNavBarScrimColor" />
+    <include layout="@layout/all_apps_fast_scroller" />
 </com.android.launcher3.allapps.AllAppsContainerView>

res/layout/all_apps_fast_scroller.xml

@@ -21,8 +21,8 @@
         android:id="@+id/fast_scroller_popup"
         style="@style/FastScrollerPopup"
         android:layout_alignParentEnd="true"
-        android:layout_below="@+id/search_container_all_apps"
-        android:layout_marginEnd="@dimen/fastscroll_popup_margin" />
+        android:layout_marginEnd="@dimen/fastscroll_popup_margin"
+        android:layout_marginTop="@dimen/all_apps_search_bar_field_height_and_margin" />
 
     <com.android.launcher3.views.RecyclerViewFastScroller
         android:id="@+id/fast_scroller"
@@ -30,8 +30,8 @@
         android:layout_height="wrap_content"
         android:layout_alignParentBottom="true"
         android:layout_alignParentEnd="true"
-        android:layout_below="@+id/search_container_all_apps"
         android:layout_marginEnd="@dimen/fastscroll_end_margin"
+        android:layout_marginTop="@dimen/all_apps_search_bar_field_height_and_margin"
         launcher:canThumbDetach="true" />
 
 </merge>

res/layout/all_apps_floating_header.xml

@@ -18,10 +18,10 @@
     android:id="@+id/all_apps_header"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    android:layout_below="@id/search_container_all_apps"
+    android:layout_marginTop="@dimen/all_apps_search_bar_field_height_and_margin"
     android:clipToPadding="false"
-    android:paddingTop="@dimen/all_apps_header_top_padding"
-    android:orientation="vertical" >
+    android:orientation="vertical"
+    android:paddingTop="@dimen/all_apps_header_top_padding" >
 
     <com.android.launcher3.allapps.PersonalWorkSlidingTabStrip
         android:id="@+id/tabs"

res/layout/all_apps_rv_layout.xml

@@ -19,8 +19,7 @@
     android:id="@+id/apps_list_view"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:layout_below="@id/search_container_all_apps"
+    android:layout_marginTop="@dimen/all_apps_search_bar_field_height_and_margin"
     android:clipToPadding="false"
     android:descendantFocusability="afterDescendants"
-    android:focusable="true"
-    android:overScrollMode="never" />
+    android:focusable="true" />

res/layout/all_apps_tabs.xml

@@ -20,9 +20,8 @@
     android:id="@+id/all_apps_tabs_view_pager"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:layout_below="@id/search_container_all_apps"
     android:layout_gravity="center_horizontal|top"
-    android:layout_marginTop="@dimen/all_apps_header_tab_height"
+    android:layout_marginTop="@dimen/all_apps_tabs_top_margin"
     android:clipChildren="true"
     android:clipToPadding="false"
     android:descendantFocusability="afterDescendants"

res/layout/deep_shortcut.xml

@@ -35,7 +35,6 @@
         android:textColor="?android:attr/textColorPrimary"
         android:fontFamily="sans-serif"
         launcher:layoutHorizontal="true"
-        launcher:deferShadowGeneration="true"
         launcher:iconDisplay="shortcut_popup"
         launcher:iconSizeOverride="@dimen/deep_shortcut_icon_size" />
 

res/layout/drop_target_bar.xml

@@ -32,18 +32,8 @@
         android:gravity="center"
         android:text="@string/remove_drop_target_label" />
 
-    <!-- App Info -->
-    <com.android.launcher3.InfoDropTarget
-        android:id="@+id/info_target_text"
-        style="@style/DropTargetButton"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_gravity="center"
-        android:gravity="center"
-        android:text="@string/app_info_drop_target_label" />
-
     <!-- Uninstall target -->
-    <com.android.launcher3.UninstallDropTarget
+    <com.android.launcher3.SecondaryDropTarget
         android:id="@+id/uninstall_target_text"
         style="@style/DropTargetButton"
         android:layout_width="wrap_content"

res/layout/hotseat.xml

@@ -17,6 +17,16 @@
     android:theme="@style/HomeScreenElementTheme"
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:launcher="http://schemas.android.com/apk/res-auto">
+
+    <ImageView
+        android:id="@+id/drag_indicator"
+        android:layout_width="@dimen/hotseat_drag_indicator_height"
+        android:layout_height="@dimen/hotseat_drag_indicator_height"
+        android:src="@drawable/ic_drag_indicator"
+        android:tint="?attr/workspaceTextColor"
+        android:scaleType="centerInside"
+        android:layout_gravity="top|center_horizontal"/>
+
     <com.android.launcher3.CellLayout
         android:id="@+id/layout"
         android:layout_width="wrap_content"

res/layout/launcher.xml

@@ -44,18 +44,6 @@
             layout="@layout/overview_panel"
             android:visibility="gone" />
 
-        <com.android.launcher3.views.AllAppsScrim
-            android:id="@+id/all_apps_scrim"
-            android:layout_width="match_parent"
-            android:layout_height="match_parent" />
-
-        <!-- DO NOT CHANGE THE ID -->
-        <include
-            android:id="@+id/hotseat"
-            layout="@layout/hotseat"
-            android:layout_width="match_parent"
-            android:layout_height="match_parent" />
-
         <!-- Keep these behind the workspace so that they are not visible when
          we go into AllApps -->
         <com.android.launcher3.pageindicators.WorkspacePageIndicator
@@ -74,6 +62,13 @@
             android:layout_width="match_parent"
             android:layout_height="match_parent"
             android:visibility="invisible" />
+
+        <!-- DO NOT CHANGE THE ID -->
+        <include
+            android:id="@+id/hotseat"
+            layout="@layout/hotseat"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent" />
     </com.android.launcher3.dragndrop.DragLayer>
 
 </com.android.launcher3.LauncherRootView>

res/layout/launcher_preference.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2017 The Android Open Source Project
+<!-- Copyright (C) 2018 The Android Open Source Project
 
      Licensed under the Apache License, Version 2.0 (the "License");
      you may not use this file except in compliance with the License.
@@ -14,10 +14,14 @@
      limitations under the License.
 -->
 
-<com.android.launcher3.graphics.GradientView
+<com.android.launcher3.views.HighlightableListView
     xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:launcher="http://schemas.android.com/apk/res-auto"
-    android:id="@+id/gradient_bg"
+    android:id="@android:id/list"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    launcher:layout_ignoreInsets="true" />
+    android:cacheColorHint="@android:color/transparent"
+    android:clipToPadding="false"
+    android:drawSelectorOnTop="false"
+    android:orientation="vertical"
+    android:scrollbarAlwaysDrawVerticalTrack="true"
+    android:scrollbarStyle="outsideOverlay" />

res/layout/longpress_options_menu.xml

@@ -13,7 +13,7 @@
      See the License for the specific language governing permissions and
      limitations under the License.
 -->
-<com.android.launcher3.uioverrides.OptionsPopupView
+<com.android.launcher3.views.OptionsPopupView
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:launcher="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
@@ -94,4 +94,4 @@
 
     </FrameLayout>
 
-</com.android.launcher3.uioverrides.OptionsPopupView>
+</com.android.launcher3.views.OptionsPopupView>

res/layout/overview_panel.xml

@@ -14,61 +14,7 @@
      See the License for the specific language governing permissions and
      limitations under the License.
 -->
-<com.android.launcher3.uioverrides.OverviewPanel
+<Space
       xmlns:android="http://schemas.android.com/apk/res/android"
-      android:theme="@style/HomeScreenElementTheme"
-      android:layout_width="match_parent"
-      android:layout_height="wrap_content"
-      android:layout_gravity="center_horizontal|bottom"
-      android:gravity="top"
-      android:orientation="horizontal">
-
-    <TextView
-        android:id="@+id/wallpaper_button"
-        android:layout_width="0dp"
-        android:layout_height="wrap_content"
-        android:layout_weight="1"
-        android:drawablePadding="4dp"
-        android:drawableTop="@drawable/ic_wallpaper"
-        android:drawableTint="?attr/workspaceTextColor"
-        android:fontFamily="sans-serif-condensed"
-        android:gravity="center_horizontal"
-        android:stateListAnimator="@animator/overview_button_anim"
-        android:text="@string/wallpaper_button_text"
-        android:textAllCaps="true"
-        android:textColor="?attr/workspaceTextColor"
-        android:textSize="12sp" />
-
-    <TextView
-        android:id="@+id/widget_button"
-        android:layout_width="0dp"
-        android:layout_height="wrap_content"
-        android:layout_weight="1"
-        android:drawablePadding="4dp"
-        android:drawableTop="@drawable/ic_widget"
-        android:drawableTint="?attr/workspaceTextColor"
-        android:fontFamily="sans-serif-condensed"
-        android:gravity="center_horizontal"
-        android:stateListAnimator="@animator/overview_button_anim"
-        android:text="@string/widget_button_text"
-        android:textAllCaps="true"
-        android:textColor="?attr/workspaceTextColor"
-        android:textSize="12sp" />
-
-    <TextView
-        android:id="@+id/settings_button"
-        android:layout_width="0dp"
-        android:layout_height="wrap_content"
-        android:layout_weight="1"
-        android:drawablePadding="4dp"
-        android:drawableTop="@drawable/ic_setting"
-        android:drawableTint="?attr/workspaceTextColor"
-        android:fontFamily="sans-serif-condensed"
-        android:gravity="center_horizontal"
-        android:stateListAnimator="@animator/overview_button_anim"
-        android:text="@string/settings_button_text"
-        android:textAllCaps="true"
-        android:textColor="?attr/workspaceTextColor"
-        android:textSize="12sp" />
-
-</com.android.launcher3.uioverrides.OverviewPanel>
+      android:layout_width="0dp"
+      android:layout_height="0dp" />

res/layout/search_container_all_apps.xml

@@ -17,53 +17,23 @@
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@id/search_container_all_apps"
     android:layout_width="match_parent"
-    android:layout_height="@dimen/all_apps_search_bar_height"
-    android:layout_gravity="center|top"
-    android:layout_marginBottom="-8dp"
-    android:gravity="center|bottom"
-    android:paddingLeft="@dimen/dynamic_grid_edge_margin"
-    android:paddingRight="@dimen/dynamic_grid_edge_margin"
-    android:saveEnabled="false" >
-
-    <!--
-      Note: The following relation should always be true so that the shadows are aligned properly
-      search_box_input.layout_marginBottom
-            == search_divider.layout_marginBottom
-            == - (search_container.layout_marginBottom)
-            >= 5dp
-    -->
-    <com.android.launcher3.ExtendedEditText
-        android:id="@+id/search_box_input"
-        android:layout_width="match_parent"
-        android:layout_height="@dimen/all_apps_search_bar_field_height"
-        android:layout_gravity="bottom"
-        android:layout_marginBottom="8dp"
-        android:background="@android:color/transparent"
-        android:focusableInTouchMode="true"
-        android:gravity="center"
-        android:hint="@string/all_apps_search_bar_hint"
-        android:imeOptions="actionSearch|flagNoExtractUi"
-        android:inputType="text|textNoSuggestions|textCapWords"
-        android:maxLines="1"
-        android:saveEnabled="false"
-        android:scrollHorizontally="true"
-        android:singleLine="true"
-        android:textColor="?android:attr/textColorSecondary"
-        android:textColorHint="@drawable/all_apps_search_hint"
-        android:textSize="16sp" />
-
-    <!-- This needs to be a container with a view, to simulate a scrolling effect for the header.
-         We translate the header down, and its content up by the same amount, so that it gets
-         clipped by the parent, making it look like the divider was scrolled out of the view. -->
-    <FrameLayout
-        android:id="@+id/search_divider"
-        android:layout_width="match_parent"
-        android:layout_height="1dp"
-        android:layout_gravity="bottom"
-        android:layout_marginBottom="8dp" >
-        <View
-            android:layout_width="match_parent"
-            android:layout_height="1dp"
-            android:background="@drawable/all_apps_search_divider"/>
-    </FrameLayout>
-</com.android.launcher3.allapps.search.AppsSearchContainerLayout>
+    android:layout_height="@dimen/all_apps_search_bar_field_height"
+    android:layout_centerHorizontal="true"
+    android:layout_gravity="top|center_horizontal"
+    android:layout_marginTop="8dp"
+    android:background="@drawable/bg_all_apps_searchbox"
+    android:elevation="1dp"
+    android:focusableInTouchMode="true"
+    android:gravity="center"
+    android:hint="@string/all_apps_search_bar_hint"
+    android:imeOptions="actionSearch|flagNoExtractUi"
+    android:inputType="text|textNoSuggestions|textCapWords"
+    android:maxLines="1"
+    android:padding="8dp"
+    android:saveEnabled="false"
+    android:scrollHorizontally="true"
+    android:singleLine="true"
+    android:textColor="?android:attr/textColorSecondary"
+    android:textColorHint="@drawable/all_apps_search_hint"
+    android:textSize="16sp"
+    android:translationY="24dp" />

res/layout/system_shortcut.xml

@@ -34,7 +34,6 @@
         android:fontFamily="sans-serif"
         launcher:iconDisplay="shortcut_popup"
         launcher:layoutHorizontal="true"
-        launcher:deferShadowGeneration="true"
         android:focusable="false" />
 
     <View

res/layout/widgets_full_sheet.xml

@@ -20,11 +20,6 @@
     android:orientation="vertical"
     android:theme="?attr/widgetsTheme" >
 
-    <com.android.launcher3.graphics.GradientView
-        android:id="@+id/gradient_bg"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent" />
-
     <com.android.launcher3.views.TopRoundedCornerView
         android:id="@+id/container"
         android:layout_width="match_parent"
@@ -36,29 +31,22 @@
             android:id="@+id/widgets_list_view"
             android:layout_width="match_parent"
             android:layout_height="match_parent"
-            android:clipToPadding="false"
-            />
+            android:clipToPadding="false" />
 
         <!-- Fast scroller popup -->
         <TextView
             android:id="@+id/fast_scroller_popup"
             style="@style/FastScrollerPopup"
-            android:layout_gravity="top|end"
+            android:layout_alignParentEnd="true"
+            android:layout_alignParentTop="true"
             android:layout_marginEnd="@dimen/fastscroll_popup_margin" />
 
         <com.android.launcher3.views.RecyclerViewFastScroller
             android:id="@+id/fast_scroller"
             android:layout_width="@dimen/fastscroll_width"
             android:layout_height="match_parent"
-            android:layout_gravity="end"
+            android:layout_alignParentEnd="true"
+            android:layout_alignParentTop="true"
             android:layout_marginEnd="@dimen/fastscroll_end_margin" />
-
-        <View
-            android:id="@+id/nav_bar_bg"
-            android:layout_width="match_parent"
-            android:layout_height="0dp"
-            android:layout_gravity="bottom"
-            android:background="?attr/allAppsNavBarScrimColor"
-            android:focusable="false"  />
     </com.android.launcher3.views.TopRoundedCornerView>
 </com.android.launcher3.widget.WidgetsFullSheet>

res/layout/widgets_list_row_view.xml

@@ -31,7 +31,6 @@
         android:layout_height="@dimen/widget_section_height"
         android:background="?android:attr/colorPrimary"
         android:drawablePadding="@dimen/widget_section_horizontal_padding"
-        android:ellipsize="end"
         android:focusable="true"
         android:gravity="start|center_vertical"
         android:paddingBottom="@dimen/widget_section_vertical_padding"
@@ -42,7 +41,6 @@
         android:textColor="?android:attr/textColorPrimary"
         android:textSize="16sp"
         android:textAlignment="viewStart"
-        launcher:deferShadowGeneration="true"
         launcher:iconDisplay="widget_section"
         launcher:iconSizeOverride="@dimen/widget_section_icon_size"
         launcher:layoutHorizontal="true" />

res/layout/work_tab_bottom_user_education_view.xml

@@ -20,6 +20,7 @@
     android:layout_gravity="bottom"
     android:background="?android:attr/colorAccent"
     android:elevation="2dp"
+    android:focusable="true"
     android:orientation="horizontal">
 
   <ImageView
@@ -42,6 +43,7 @@
         android:layout_marginTop="12dp"
         android:layout_marginEnd="12dp"
         android:layout_gravity="right"
+        android:contentDescription="@string/bottom_work_tab_user_education_close_button"
         android:src="@drawable/ic_close"/>
 
     <TextView

res/layout/work_tab_footer.xml

@@ -17,6 +17,7 @@
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
+    android:focusable="true"
     android:paddingBottom="@dimen/all_apps_work_profile_tab_footer_bottom_padding"
     android:paddingLeft="@dimen/dynamic_grid_cell_padding_x"
     android:paddingRight="@dimen/dynamic_grid_cell_padding_x"

res/values-af/strings.xml

@@ -40,9 +40,15 @@
     <string name="all_apps_no_search_results" msgid="3200346862396363786">"Kon geen programme kry wat by \"<xliff:g id="QUERY">%1$s</xliff:g>\" pas nie"</string>
     <string name="all_apps_search_market_message" msgid="1366263386197059176">"Soek meer programme"</string>
     <string name="notifications_header" msgid="1404149926117359025">"Kennisgewings"</string>
+    <!-- no translation found for long_press_shortcut_to_add (4524750017792716791) -->
+    <skip />
+    <!-- no translation found for long_accessible_way_to_add_shortcut (3327314059613154633) -->
+    <skip />
     <string name="out_of_space" msgid="4691004494942118364">"Niks meer spasie op die tuisskerm nie."</string>
     <string name="hotseat_out_of_space" msgid="7448809638125333693">"Geen plek meer in die Gunstelinge-laai nie"</string>
     <string name="all_apps_button_label" msgid="8130441508702294465">"Programmelys"</string>
+    <string name="all_apps_button_personal_label" msgid="1315764287305224468">"Lys persoonlike programme"</string>
+    <string name="all_apps_button_work_label" msgid="7270707118948892488">"Lys werkprogramme"</string>
     <string name="all_apps_home_button_label" msgid="252062713717058851">"Tuis"</string>
     <string name="remove_drop_target_label" msgid="7812859488053230776">"Verwyder"</string>
     <string name="uninstall_drop_target_label" msgid="4722034217958379417">"Deïnstalleer"</string>
@@ -77,19 +83,17 @@
     <string name="wallpaper_button_text" msgid="8404103075899945851">"Muurpapiere"</string>
     <string name="settings_button_text" msgid="8873672322605444408">"Home-instellings"</string>
     <string name="msg_disabled_by_admin" msgid="6898038085516271325">"Gedeaktiveer deur jou administrateur"</string>
-    <string name="accessibility_action_overview" msgid="6257665857640347026">"Oorsig"</string>
-    <string name="allow_rotation_title" msgid="7728578836261442095">"Laat toe dat tuisskerm gedraai word"</string>
-    <string name="allow_rotation_desc" msgid="8662546029078692509">"Wanneer foon gedraai word"</string>
-    <string name="allow_rotation_blocked_desc" msgid="3212602545192996253">"Huidige vertooninstelling laat nie rotasie toe nie"</string>
     <string name="icon_badging_title" msgid="874121399231955394">"Kennisgewingkolle"</string>
     <string name="icon_badging_desc_on" msgid="2627952638544674079">"Aan"</string>
     <string name="icon_badging_desc_off" msgid="5503319969924580241">"Af"</string>
     <string name="title_missing_notification_access" msgid="7503287056163941064">"Kennisgewingtoegang word benodig"</string>
     <string name="msg_missing_notification_access" msgid="281113995110910548">"Skakel programkennisgewings vir <xliff:g id="NAME">%1$s</xliff:g> aan om kennisgewingkolle te sien"</string>
     <string name="title_change_settings" msgid="1376365968844349552">"Verander instellings"</string>
+    <string name="icon_badging_service_title" msgid="2309733118428242174">"Wys kennisgewingkolle"</string>
     <string name="auto_add_shortcuts_label" msgid="8222286205987725611">"Voeg ikoon by tuisskerm"</string>
     <string name="auto_add_shortcuts_description" msgid="7117251166066978730">"Vir nuwe programme"</string>
     <string name="icon_shape_override_label" msgid="2977264953998281004">"Verander ikoon se vorm"</string>
+    <string name="icon_shape_override_label_location" msgid="3841607380657692863">"op tuisskerm"</string>
     <string name="icon_shape_system_default" msgid="1709762974822753030">"Gebruik stelselverstek"</string>
     <string name="icon_shape_square" msgid="633575066111622774">"Vierkant"</string>
     <string name="icon_shape_squircle" msgid="5658049910802669495">"Sirkelvierkant"</string>
@@ -119,9 +123,6 @@
     <string name="create_folder_with" msgid="4050141361160214248">"Skep vouer met: <xliff:g id="NAME">%1$s</xliff:g>"</string>
     <string name="folder_created" msgid="6409794597405184510">"Vouer geskep"</string>
     <string name="action_move_to_workspace" msgid="1603837886334246317">"Skuif na tuisskerm"</string>
-    <string name="action_move_screen_left" msgid="8854216831569401665">"Skuif skerm na links"</string>
-    <string name="action_move_screen_right" msgid="329334910274311123">"Skuif skerm na regs"</string>
-    <string name="screen_moved" msgid="266230079505650577">"Skerm is geskuif"</string>
     <string name="action_resize" msgid="1802976324781771067">"Verander grootte"</string>
     <string name="action_increase_width" msgid="8773715375078513326">"Vermeerder breedte"</string>
     <string name="action_increase_height" msgid="459390020612501122">"Vermeerder hoogte"</string>
@@ -137,7 +138,9 @@
     <string name="all_apps_work_tab" msgid="4884822796154055118">"Werk"</string>
     <string name="work_profile_toggle_label" msgid="3081029915775481146">"Werkprofiel"</string>
     <string name="bottom_work_tab_user_education_title" msgid="5785851780786322825">"Kry werkprogramme hier"</string>
-    <string name="bottom_work_tab_user_education_body" msgid="1485375451542813426">"Elke werkprogram het \'n oranje kenteken en word deur jou organisasie veilig gehou. Skuif programme na jou Tuisskerm vir makliker toegang."</string>
+    <string name="bottom_work_tab_user_education_body" msgid="2818107472360579152">"Elke werkprogram het \'n kenteken en word deur jou organisasie veilig gehou. Skuif programme na jou tuisskerm toe vir makliker toegang."</string>
     <string name="work_mode_on_label" msgid="4781128097185272916">"Bestuur deur jou organisasie"</string>
     <string name="work_mode_off_label" msgid="3194894777601421047">"Kennisgewings en programme is af"</string>
+    <string name="bottom_work_tab_user_education_close_button" msgid="4224492243977802135">"Maak toe"</string>
+    <string name="bottom_work_tab_user_education_closed" msgid="1098340939861869465">"Toe"</string>
 </resources>

res/values-am/strings.xml

@@ -137,7 +137,8 @@
     <string name="all_apps_work_tab" msgid="4884822796154055118">"ሥራ"</string>
     <string name="work_profile_toggle_label" msgid="3081029915775481146">"የሥራ መገለጫ"</string>
     <string name="bottom_work_tab_user_education_title" msgid="5785851780786322825">"የስራ መተግበሪያዎችን እዚህ ያግኙ"</string>
-    <string name="bottom_work_tab_user_education_body" msgid="1485375451542813426">"እያንዳንዱ የሥራ መተግበሪያ ብርቱካናማ ባጅ አለው እና በእርስዎ ድርጅት በኩል ደህንነቱ ተጠብቋል። ለቀለለ መዳረሻ መተግበሪያዎችን ወደ የእርስዎ መነሻ ማያ ገጽ ያንቀሳቅሱ።"</string>
+    <!-- no translation found for bottom_work_tab_user_education_body (2818107472360579152) -->
+    <skip />
     <string name="work_mode_on_label" msgid="4781128097185272916">"በእርስዎ ድርጅት የሚተዳደር"</string>
     <string name="work_mode_off_label" msgid="3194894777601421047">"ማሳወቂያዎች እና መተግበሪያዎች ጠፍተዋል"</string>
 </resources>