Adding home animation support for non-system Launcher am: 30ac97d938

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/12150115

Change-Id: I225841557201a377e74c1b380beeea65faa30a61

quickstep/recents_ui_overrides/src/com/android/quickstep/FallbackSwipeHandler.java

@@ -15,14 +15,35 @@
  */
 package com.android.quickstep;
 
+import static android.content.Intent.EXTRA_COMPONENT_NAME;
+import static android.content.Intent.EXTRA_USER;
+
+import static com.android.launcher3.GestureNavContract.EXTRA_GESTURE_CONTRACT;
+import static com.android.launcher3.GestureNavContract.EXTRA_ICON_POSITION;
+import static com.android.launcher3.GestureNavContract.EXTRA_ICON_SURFACE;
+import static com.android.launcher3.GestureNavContract.EXTRA_REMOTE_CALLBACK;
 import static com.android.launcher3.anim.Interpolators.ACCEL;
 import static com.android.systemui.shared.system.RemoteAnimationTargetCompat.ACTIVITY_TYPE_HOME;
 
 import android.animation.ObjectAnimator;
+import android.annotation.TargetApi;
 import android.app.ActivityOptions;
 import android.content.Context;
 import android.content.Intent;
 import android.graphics.Matrix;
+import android.graphics.Rect;
+import android.graphics.RectF;
+import android.os.Build;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.Looper;
+import android.os.Message;
+import android.os.Messenger;
+import android.os.ParcelUuid;
+import android.os.UserHandle;
+import android.view.Surface;
+import android.view.SurfaceControl;
+import android.view.SurfaceControl.Transaction;
 
 import androidx.annotation.NonNull;
 
@@ -32,19 +53,33 @@ import com.android.launcher3.anim.AnimatorPlaybackController;
 import com.android.launcher3.anim.PendingAnimation;
 import com.android.launcher3.anim.SpringAnimationBuilder;
 import com.android.quickstep.fallback.FallbackRecentsView;
+import com.android.quickstep.util.RectFSpringAnim;
 import com.android.quickstep.util.TransformParams;
 import com.android.quickstep.util.TransformParams.BuilderProxy;
+import com.android.systemui.shared.recents.model.Task.TaskKey;
 import com.android.systemui.shared.system.ActivityManagerWrapper;
 import com.android.systemui.shared.system.InputConsumerController;
 import com.android.systemui.shared.system.RemoteAnimationTargetCompat;
 import com.android.systemui.shared.system.SyncRtSurfaceTransactionApplierCompat.SurfaceParams;
 
+import java.lang.ref.WeakReference;
+import java.util.UUID;
+import java.util.function.Consumer;
+
 /**
  * Handles the navigation gestures when a 3rd party launcher is the default home activity.
  */
+@TargetApi(Build.VERSION_CODES.R)
 public class FallbackSwipeHandler extends
         BaseSwipeUpHandlerV2<RecentsActivity, FallbackRecentsView> {
 
+    /**
+     * Message used for receiving gesture nav contract information. We use a static messenger to
+     * avoid leaking too make binders in case the receiving launcher does not handle the contract
+     * properly.
+     */
+    private static StaticMessageReceiver sMessageReceiver = null;
+
     private FallbackHomeAnimationFactory mActiveAnimationFactory;
     private final boolean mRunningOverHome;
 
@@ -89,7 +124,9 @@ public class FallbackSwipeHandler extends
     protected HomeAnimationFactory createHomeAnimationFactory(long duration) {
         mActiveAnimationFactory = new FallbackHomeAnimationFactory(duration);
         ActivityOptions options = ActivityOptions.makeCustomAnimation(mContext, 0, 0);
-        mContext.startActivity(new Intent(mGestureState.getHomeIntent()), options.toBundle());
+        Intent intent = new Intent(mGestureState.getHomeIntent());
+        mActiveAnimationFactory.addGestureContract(intent);
+        mContext.startActivity(intent, options.toBundle());
         return mActiveAnimationFactory;
     }
 
@@ -130,15 +167,19 @@ public class FallbackSwipeHandler extends
     }
 
     private class FallbackHomeAnimationFactory extends HomeAnimationFactory {
-
+        private final Rect mTempRect = new Rect();
         private final TransformParams mHomeAlphaParams = new TransformParams();
         private final AnimatedFloat mHomeAlpha;
 
         private final AnimatedFloat mVerticalShiftForScale = new AnimatedFloat();
-
         private final AnimatedFloat mRecentsAlpha = new AnimatedFloat();
 
+        private final RectF mTargetRect = new RectF();
+        private SurfaceControl mSurfaceControl;
+
         private final long mDuration;
+
+        private RectFSpringAnim mSpringAnim;
         FallbackHomeAnimationFactory(long duration) {
             mDuration = duration;
 
@@ -161,6 +202,15 @@ public class FallbackSwipeHandler extends
                     this::updateRecentsActivityTransformDuringHomeAnim);
         }
 
+        @NonNull
+        @Override
+        public RectF getWindowTargetRect() {
+            if (mTargetRect.isEmpty()) {
+                mTargetRect.set(super.getWindowTargetRect());
+            }
+            return mTargetRect;
+        }
+
         private void updateRecentsActivityTransformDuringHomeAnim(SurfaceParams.Builder builder,
                 RemoteAnimationTargetCompat app, TransformParams params) {
             builder.withAlpha(mRecentsAlpha.value);
@@ -217,5 +267,87 @@ public class FallbackSwipeHandler extends
                         .start();
             }
         }
+
+        @Override
+        public void setAnimation(RectFSpringAnim anim) {
+            mSpringAnim = anim;
+        }
+
+        private void onMessageReceived(Message msg) {
+            try {
+                Bundle data = msg.getData();
+                RectF position = data.getParcelable(EXTRA_ICON_POSITION);
+                if (!position.isEmpty()) {
+                    mSurfaceControl = data.getParcelable(EXTRA_ICON_SURFACE);
+                    mTargetRect.set(position);
+                    if (mSpringAnim != null) {
+                        mSpringAnim.onTargetPositionChanged();
+                    }
+                }
+            } catch (Exception e) {
+                // Ignore
+            }
+        }
+
+        @Override
+        public void update(RectF currentRect, float progress, float radius) {
+            if (mSurfaceControl != null) {
+                currentRect.roundOut(mTempRect);
+                Transaction t = new Transaction();
+                t.setGeometry(mSurfaceControl, null, mTempRect, Surface.ROTATION_0);
+                t.apply();
+            }
+        }
+
+        private void addGestureContract(Intent intent) {
+            if (mRunningOverHome || mGestureState.getRunningTask() == null) {
+                return;
+            }
+
+            TaskKey key = new TaskKey(mGestureState.getRunningTask());
+            if (key.getComponent() != null) {
+                if (sMessageReceiver == null) {
+                    sMessageReceiver = new StaticMessageReceiver();
+                }
+
+                Bundle gestureNavContract = new Bundle();
+                gestureNavContract.putParcelable(EXTRA_COMPONENT_NAME, key.getComponent());
+                gestureNavContract.putParcelable(EXTRA_USER, UserHandle.of(key.userId));
+                gestureNavContract.putParcelable(EXTRA_REMOTE_CALLBACK,
+                        sMessageReceiver.newCallback(this::onMessageReceived));
+                intent.putExtra(EXTRA_GESTURE_CONTRACT, gestureNavContract);
+            }
+        }
+    }
+
+    private static class StaticMessageReceiver implements Handler.Callback {
+
+        private final Messenger mMessenger =
+                new Messenger(new Handler(Looper.getMainLooper(), this));
+
+        private ParcelUuid mCurrentUID = new ParcelUuid(UUID.randomUUID());
+        private WeakReference<Consumer<Message>> mCurrentCallback = new WeakReference<>(null);
+
+        public Message newCallback(Consumer<Message> callback) {
+            mCurrentUID = new ParcelUuid(UUID.randomUUID());
+            mCurrentCallback = new WeakReference<>(callback);
+
+            Message msg = Message.obtain();
+            msg.replyTo = mMessenger;
+            msg.obj = mCurrentUID;
+            return msg;
+        }
+
+        @Override
+        public boolean handleMessage(@NonNull Message message) {
+            if (mCurrentUID.equals(message.obj)) {
+                Consumer<Message> consumer = mCurrentCallback.get();
+                if (consumer != null) {
+                    consumer.accept(message);
+                    return true;
+                }
+            }
+            return false;
+        }
     }
 }

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

@@ -110,6 +110,13 @@ public abstract class BaseQuickstepLauncher extends Launcher
                 .getHighResLoadingState().setVisible(true);
     }
 
+    @Override
+    protected void handleGestureContract(Intent intent) {
+        if (FeatureFlags.SEPARATE_RECENTS_ACTIVITY.get()) {
+            super.handleGestureContract(intent);
+        }
+    }
+
     @Override
     public void onTrimMemory(int level) {
         super.onTrimMemory(level);

res/layout/floating_surface_view.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2020 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.launcher3.views.FloatingSurfaceView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content" />

src/com/android/launcher3/AbstractFloatingView.java

@@ -62,7 +62,8 @@ public abstract class AbstractFloatingView extends LinearLayout implements Touch
             TYPE_ALL_APPS_EDU,
 
             TYPE_TASK_MENU,
-            TYPE_OPTIONS_POPUP
+            TYPE_OPTIONS_POPUP,
+            TYPE_ICON_SURFACE
     })
     @Retention(RetentionPolicy.SOURCE)
     public @interface FloatingViewType {}
@@ -80,16 +81,18 @@ public abstract class AbstractFloatingView extends LinearLayout implements Touch
     // Popups related to quickstep UI
     public static final int TYPE_TASK_MENU = 1 << 10;
     public static final int TYPE_OPTIONS_POPUP = 1 << 11;
+    public static final int TYPE_ICON_SURFACE = 1 << 12;
 
     public static final int TYPE_ALL = TYPE_FOLDER | TYPE_ACTION_POPUP
             | TYPE_WIDGETS_BOTTOM_SHEET | TYPE_WIDGET_RESIZE_FRAME | TYPE_WIDGETS_FULL_SHEET
             | TYPE_ON_BOARD_POPUP | TYPE_DISCOVERY_BOUNCE | TYPE_TASK_MENU
-            | TYPE_OPTIONS_POPUP | TYPE_SNACKBAR | TYPE_LISTENER | TYPE_ALL_APPS_EDU;
+            | TYPE_OPTIONS_POPUP | TYPE_SNACKBAR | TYPE_LISTENER | TYPE_ALL_APPS_EDU
+            | TYPE_ICON_SURFACE;
 
     // Type of popups which should be kept open during launcher rebind
     public static final int TYPE_REBIND_SAFE = TYPE_WIDGETS_FULL_SHEET
             | TYPE_WIDGETS_BOTTOM_SHEET | TYPE_ON_BOARD_POPUP | TYPE_DISCOVERY_BOUNCE
-            | TYPE_ALL_APPS_EDU;
+            | TYPE_ALL_APPS_EDU | TYPE_ICON_SURFACE;
 
     // Usually we show the back button when a floating view is open. Instead, hide for these types.
     public static final int TYPE_HIDE_BACK_BUTTON = TYPE_ON_BOARD_POPUP | TYPE_DISCOVERY_BOUNCE

src/com/android/launcher3/BubbleTextView.java

@@ -614,6 +614,9 @@ public class BubbleTextView extends TextView implements ItemInfoUpdateReceiver,
     @Override
     public void setIconVisible(boolean visible) {
         mIsIconVisible = visible;
+        if (!mIsIconVisible) {
+            resetIconScale();
+        }
         Drawable icon = visible ? mIcon : new ColorDrawable(Color.TRANSPARENT);
         applyCompoundDrawables(icon);
     }
@@ -753,11 +756,14 @@ public class BubbleTextView extends TextView implements ItemInfoUpdateReceiver,
 
     @Override
     public SafeCloseable prepareDrawDragView() {
-        if (getIcon() instanceof FastBitmapDrawable) {
+        resetIconScale();
-            FastBitmapDrawable icon = (FastBitmapDrawable) getIcon();
-            icon.setScale(1f);
-        }
         setForceHideDot(true);
         return () -> { };
     }
+
+    private void resetIconScale() {
+        if (mIcon instanceof FastBitmapDrawable) {
+            ((FastBitmapDrawable) mIcon).setScale(1f);
+        }
+    }
 }

src/com/android/launcher3/GestureNavContract.java

@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2020 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 android.content.Intent.EXTRA_COMPONENT_NAME;
+import static android.content.Intent.EXTRA_USER;
+
+import android.annotation.TargetApi;
+import android.content.ComponentName;
+import android.content.Intent;
+import android.graphics.RectF;
+import android.os.Build;
+import android.os.Bundle;
+import android.os.Message;
+import android.os.RemoteException;
+import android.os.UserHandle;
+import android.util.Log;
+import android.view.SurfaceControl;
+
+import androidx.annotation.Nullable;
+
+/**
+ * Class to encapsulate the handshake protocol between Launcher and gestureNav.
+ */
+public class GestureNavContract {
+
+    private static final String TAG = "GestureNavContract";
+
+    public static final String EXTRA_GESTURE_CONTRACT = "gesture_nav_contract_v1";
+    public static final String EXTRA_ICON_POSITION = "gesture_nav_contract_icon_position";
+    public static final String EXTRA_ICON_SURFACE = "gesture_nav_contract_surface_control";
+    public static final String EXTRA_REMOTE_CALLBACK = "android.intent.extra.REMOTE_CALLBACK";
+
+    public final ComponentName componentName;
+    public final UserHandle user;
+
+    private final Message mCallback;
+
+    public GestureNavContract(ComponentName componentName, UserHandle user, Message callback) {
+        this.componentName = componentName;
+        this.user = user;
+        this.mCallback = callback;
+    }
+
+    /**
+     * Sends the position information to the receiver
+     */
+    @TargetApi(Build.VERSION_CODES.R)
+    public void sendEndPosition(RectF position, @Nullable SurfaceControl surfaceControl) {
+        Bundle result = new Bundle();
+        result.putParcelable(EXTRA_ICON_POSITION, position);
+        result.putParcelable(EXTRA_ICON_SURFACE, surfaceControl);
+
+        Message callback = Message.obtain();
+        callback.copyFrom(mCallback);
+        callback.setData(result);
+
+        try {
+            callback.replyTo.send(callback);
+        } catch (RemoteException e) {
+            Log.e(TAG, "Error sending icon position", e);
+        }
+    }
+
+    /**
+     * Clears and returns the GestureNavContract if it was present in the intent.
+     */
+    public static GestureNavContract fromIntent(Intent intent) {
+        if (!Utilities.ATLEAST_R) {
+            return null;
+        }
+        Bundle extras = intent.getBundleExtra(EXTRA_GESTURE_CONTRACT);
+        if (extras == null) {
+            return null;
+        }
+        intent.removeExtra(EXTRA_GESTURE_CONTRACT);
+
+        ComponentName componentName = extras.getParcelable(EXTRA_COMPONENT_NAME);
+        UserHandle userHandle = extras.getParcelable(EXTRA_USER);
+        Message callback = extras.getParcelable(EXTRA_REMOTE_CALLBACK);
+
+        if (componentName != null && userHandle != null && callback != null
+                && callback.replyTo != null) {
+            return new GestureNavContract(componentName, userHandle, callback);
+        }
+        return null;
+    }
+}

src/com/android/launcher3/Launcher.java

@@ -21,6 +21,7 @@ import static android.content.pm.ActivityInfo.CONFIG_SCREEN_SIZE;
 import static android.view.accessibility.AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED;
 
 import static com.android.launcher3.AbstractFloatingView.TYPE_ALL;
+import static com.android.launcher3.AbstractFloatingView.TYPE_ICON_SURFACE;
 import static com.android.launcher3.AbstractFloatingView.TYPE_REBIND_SAFE;
 import static com.android.launcher3.AbstractFloatingView.TYPE_SNACKBAR;
 import static com.android.launcher3.InstallShortcutReceiver.FLAG_DRAG_AND_DROP;
@@ -168,6 +169,7 @@ import com.android.launcher3.util.TraceHelper;
 import com.android.launcher3.util.UiThreadHelper;
 import com.android.launcher3.util.ViewOnDrawExecutor;
 import com.android.launcher3.views.ActivityContext;
+import com.android.launcher3.views.FloatingSurfaceView;
 import com.android.launcher3.views.OptionsPopupView;
 import com.android.launcher3.views.ScrimView;
 import com.android.launcher3.widget.LauncherAppWidgetHostView;
@@ -509,6 +511,7 @@ public class Launcher extends StatefulActivity<LauncherState> implements Launche
     public void onEnterAnimationComplete() {
         super.onEnterAnimationComplete();
         mRotationHelper.setCurrentTransitionRequest(REQUEST_NONE);
+        AbstractFloatingView.closeOpenViews(this, false, TYPE_ICON_SURFACE);
     }
 
     @Override
@@ -1450,6 +1453,7 @@ public class Launcher extends StatefulActivity<LauncherState> implements Launche
                 mLauncherCallbacks.onHomeIntent(internalStateHandled);
             }
             mOverlayManager.hideOverlay(isStarted() && !isForceInvisible());
+            handleGestureContract(intent);
         } else if (Intent.ACTION_ALL_APPS.equals(intent.getAction())) {
             getStateManager().goToState(ALL_APPS, alreadyOnHome);
         }
@@ -1457,6 +1461,17 @@ public class Launcher extends StatefulActivity<LauncherState> implements Launche
         TraceHelper.INSTANCE.endSection(traceToken);
     }
 
+    /**
+     * Handles gesture nav contract
+     */
+    protected void handleGestureContract(Intent intent) {
+        GestureNavContract gnc = GestureNavContract.fromIntent(intent);
+        if (gnc != null) {
+            AbstractFloatingView.closeOpenViews(this, false, TYPE_ICON_SURFACE);
+            FloatingSurfaceView.show(this, gnc);
+        }
+    }
+
     /**
      * Hides the keyboard if visible
      */

src/com/android/launcher3/views/FloatingIconView.java

@@ -196,13 +196,18 @@ public class FloatingIconView extends FrameLayout implements
         layout(left, lp.topMargin, left + lp.width, lp.topMargin + lp.height);
     }
 
+    private static void getLocationBoundsForView(Launcher launcher, View v, boolean isOpening,
+            RectF outRect) {
+        getLocationBoundsForView(launcher, v, isOpening, outRect, new Rect());
+    }
+
     /**
      * Gets the location bounds of a view and returns the overall rotation.
      * - For DeepShortcutView, we return the bounds of the icon view.
      * - For BubbleTextView, we return the icon bounds.
      */
-    private static void getLocationBoundsForView(Launcher launcher, View v, boolean isOpening,
+    public static void getLocationBoundsForView(Launcher launcher, View v, boolean isOpening,
-            RectF outRect) {
+            RectF outRect, Rect outViewBounds) {
         boolean ignoreTransform = !isOpening;
         if (v instanceof DeepShortcutView) {
             v = ((DeepShortcutView) v).getBubbleText();
@@ -215,17 +220,16 @@ public class FloatingIconView extends FrameLayout implements
             return;
         }
 
-        Rect iconBounds = new Rect();
         if (v instanceof BubbleTextView) {
-            ((BubbleTextView) v).getIconBounds(iconBounds);
+            ((BubbleTextView) v).getIconBounds(outViewBounds);
         } else if (v instanceof FolderIcon) {
-            ((FolderIcon) v).getPreviewBounds(iconBounds);
+            ((FolderIcon) v).getPreviewBounds(outViewBounds);
         } else {
-            iconBounds.set(0, 0, v.getWidth(), v.getHeight());
+            outViewBounds.set(0, 0, v.getWidth(), v.getHeight());
         }
 
-        float[] points = new float[] {iconBounds.left, iconBounds.top, iconBounds.right,
+        float[] points = new float[] {outViewBounds.left, outViewBounds.top, outViewBounds.right,
-                iconBounds.bottom};
+                outViewBounds.bottom};
         Utilities.getDescendantCoordRelativeToAncestor(v, launcher.getDragLayer(), points,
                 false, ignoreTransform);
         outRect.set(

src/com/android/launcher3/views/FloatingSurfaceView.java

@@ -0,0 +1,241 @@
+/*
+ * Copyright (C) 2020 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.views;
+
+import static com.android.launcher3.views.FloatingIconView.getLocationBoundsForView;
+import static com.android.launcher3.views.IconLabelDotView.setIconAndDotVisible;
+
+import android.annotation.TargetApi;
+import android.content.Context;
+import android.graphics.Canvas;
+import android.graphics.Picture;
+import android.graphics.PixelFormat;
+import android.graphics.Rect;
+import android.graphics.RectF;
+import android.os.Build;
+import android.util.AttributeSet;
+import android.view.MotionEvent;
+import android.view.SurfaceHolder;
+import android.view.SurfaceView;
+import android.view.View;
+import android.view.ViewTreeObserver.OnGlobalLayoutListener;
+
+import androidx.annotation.NonNull;
+
+import com.android.launcher3.AbstractFloatingView;
+import com.android.launcher3.GestureNavContract;
+import com.android.launcher3.Insettable;
+import com.android.launcher3.Launcher;
+import com.android.launcher3.R;
+import com.android.launcher3.util.DefaultDisplay;
+import com.android.launcher3.util.Executors;
+
+/**
+ * Similar to {@link FloatingIconView} but displays a surface with the targetIcon. It then passes
+ * the surfaceHandle to the {@link GestureNavContract}.
+ */
+@TargetApi(Build.VERSION_CODES.R)
+public class FloatingSurfaceView extends AbstractFloatingView implements
+        OnGlobalLayoutListener, Insettable, SurfaceHolder.Callback2 {
+
+    private final RectF mTmpPosition = new RectF();
+
+    private final Launcher mLauncher;
+    private final RectF mIconPosition = new RectF();
+
+    private final Rect mIconBounds = new Rect();
+    private final Picture mPicture = new Picture();
+    private final Runnable mRemoveViewRunnable = this::removeViewFromParent;
+
+    private final SurfaceView mSurfaceView;
+
+
+    private View mIcon;
+    private GestureNavContract mContract;
+
+    public FloatingSurfaceView(Context context) {
+        this(context, null);
+    }
+
+    public FloatingSurfaceView(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public FloatingSurfaceView(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+        mLauncher = Launcher.getLauncher(context);
+
+        mSurfaceView = new SurfaceView(context);
+        mSurfaceView.setZOrderOnTop(true);
+
+        mSurfaceView.getHolder().setFormat(PixelFormat.TRANSLUCENT);
+        mSurfaceView.getHolder().addCallback(this);
+        mIsOpen = true;
+        addView(mSurfaceView);
+    }
+
+    @Override
+    protected void handleClose(boolean animate) {
+        setCurrentIconVisible(true);
+        mLauncher.getViewCache().recycleView(R.layout.floating_surface_view, this);
+        mContract = null;
+        mIcon = null;
+        mIsOpen = false;
+
+        // Remove after some time, to avoid flickering
+        Executors.MAIN_EXECUTOR.getHandler().postDelayed(mRemoveViewRunnable,
+                DefaultDisplay.INSTANCE.get(mLauncher).getInfo().singleFrameMs);
+    }
+
+    private void removeViewFromParent() {
+        mPicture.beginRecording(1, 1);
+        mPicture.endRecording();
+        mLauncher.getDragLayer().removeView(this);
+    }
+
+    /**
+     * Shows the surfaceView for the provided contract
+     */
+    public static void show(Launcher launcher, GestureNavContract contract) {
+        FloatingSurfaceView view = launcher.getViewCache().getView(R.layout.floating_surface_view,
+                launcher, launcher.getDragLayer());
+        view.mContract = contract;
+        view.mIsOpen = true;
+
+        // Cancel any pending remove
+        Executors.MAIN_EXECUTOR.getHandler().removeCallbacks(view.mRemoveViewRunnable);
+        view.removeViewFromParent();
+        launcher.getDragLayer().addView(view);
+    }
+
+    @Override
+    public void logActionCommand(int command) { }
+
+    @Override
+    protected boolean isOfType(int type) {
+        return (type & TYPE_ICON_SURFACE) != 0;
+    }
+
+    @Override
+    public boolean onControllerInterceptTouchEvent(MotionEvent ev) {
+        close(false);
+        return false;
+    }
+
+    @Override
+    protected void onAttachedToWindow() {
+        super.onAttachedToWindow();
+        getViewTreeObserver().addOnGlobalLayoutListener(this);
+        updateIconLocation();
+    }
+
+    @Override
+    protected void onDetachedFromWindow() {
+        super.onDetachedFromWindow();
+        getViewTreeObserver().removeOnGlobalLayoutListener(this);
+        setCurrentIconVisible(true);
+    }
+
+    @Override
+    public void onGlobalLayout() {
+        updateIconLocation();
+    }
+
+    @Override
+    public void setInsets(Rect insets) { }
+
+    private void updateIconLocation() {
+        if (mContract == null) {
+            return;
+        }
+        View icon = mLauncher.getWorkspace().getFirstMatchForAppClose(
+                mContract.componentName.getPackageName(), mContract.user);
+
+        boolean iconChanged = mIcon != icon;
+        if (iconChanged) {
+            setCurrentIconVisible(true);
+            mIcon = icon;
+            setCurrentIconVisible(false);
+        }
+
+        if (icon != null && icon.isAttachedToWindow()) {
+            getLocationBoundsForView(mLauncher, icon, false, mTmpPosition, mIconBounds);
+
+            if (!mTmpPosition.equals(mIconPosition)) {
+                mIconPosition.set(mTmpPosition);
+                sendIconInfo();
+
+                LayoutParams lp = (LayoutParams) mSurfaceView.getLayoutParams();
+                lp.width = Math.round(mIconPosition.width());
+                lp.height = Math.round(mIconPosition.height());
+                lp.leftMargin = Math.round(mIconPosition.left);
+                lp.topMargin = Math.round(mIconPosition.top);
+            }
+        }
+        if (iconChanged && !mIconBounds.isEmpty()) {
+            // Record the icon display
+            setCurrentIconVisible(true);
+            Canvas c = mPicture.beginRecording(mIconBounds.width(), mIconBounds.height());
+            c.translate(-mIconBounds.left, -mIconBounds.top);
+            mIcon.draw(c);
+            mPicture.endRecording();
+            setCurrentIconVisible(false);
+            drawOnSurface();
+        }
+    }
+
+    private void sendIconInfo() {
+        if (mContract != null && !mIconPosition.isEmpty()) {
+            mContract.sendEndPosition(mIconPosition, mSurfaceView.getSurfaceControl());
+        }
+    }
+
+    @Override
+    public void surfaceCreated(@NonNull SurfaceHolder surfaceHolder) {
+        drawOnSurface();
+        sendIconInfo();
+    }
+
+    @Override
+    public void surfaceChanged(@NonNull SurfaceHolder surfaceHolder,
+            int format, int width, int height) {
+        drawOnSurface();
+    }
+
+    @Override
+    public void surfaceDestroyed(@NonNull SurfaceHolder surfaceHolder) {}
+
+    @Override
+    public void surfaceRedrawNeeded(@NonNull SurfaceHolder surfaceHolder) {
+        drawOnSurface();
+    }
+
+    private void drawOnSurface() {
+        SurfaceHolder surfaceHolder = mSurfaceView.getHolder();
+
+        Canvas c = surfaceHolder.lockHardwareCanvas();
+        if (c != null) {
+            mPicture.draw(c);
+            surfaceHolder.unlockCanvasAndPost(c);
+        }
+    }
+
+    private void setCurrentIconVisible(boolean isVisible) {
+        if (mIcon != null) {
+            setIconAndDotVisible(mIcon, isVisible);
+        }
+    }
+}