From 6692f78229b42462ba90e2666e7dd42d0f6e8c1f Mon Sep 17 00:00:00 2001
From: Jeremy Sim <jeremysim@google.com>
Date: Wed, 9 Nov 2022 18:26:06 -0800
Subject: [PATCH] Allow user to tap on stashed app to launch task in fullscreen

This patch implements a new feature that allows the user to tap on the staged app rectangle in split staging mode. When the user does so, split selection will be canceled, and the staged app will animate out to fill the screen and launch in fullscreen.

Done by creating a new onClick listener on mFirstFloatingTaskView that sets up the screen-filling animation, and then calls a new RecentsView function, launchStagedTask(), that launches mSplitHiddenTaskView and cleans up RecentsView afterwards (similar to what happens when a split pair is selected, but only one app is launched).

Open issues:
- After the staged task animates out to fill the screen, the task itself loads instantly without animating in. Ideally, it should fade in, similar to what happens when two split tasks are loaded in.

Bug: 257513449
Test: Manual on tablet
Change-Id: I2ae8e13e1c9848aae1978a536766c370949fd08b
---
 .../quickstep/util/SplitAnimationTimings.java |  2 +-
 .../android/quickstep/views/RecentsView.java  | 50 +++++++++++++++++--
 .../launcher3/config/FeatureFlags.java        |  5 ++
 3 files changed, 51 insertions(+), 6 deletions(-)

diff --git a/quickstep/src/com/android/quickstep/util/SplitAnimationTimings.java b/quickstep/src/com/android/quickstep/util/SplitAnimationTimings.java
index 2966fbb5db..7dc1b32858 100644
--- a/quickstep/src/com/android/quickstep/util/SplitAnimationTimings.java
+++ b/quickstep/src/com/android/quickstep/util/SplitAnimationTimings.java
@@ -25,7 +25,7 @@ import android.view.animation.Interpolator;
  */
 public interface SplitAnimationTimings {
     int TABLET_ENTER_DURATION = 866;
-    int TABLET_CONFIRM_DURATION = 383;
+    int TABLET_CONFIRM_DURATION = 500;
 
     int PHONE_ENTER_DURATION = 517;
     int PHONE_CONFIRM_DURATION = 333;
diff --git a/quickstep/src/com/android/quickstep/views/RecentsView.java b/quickstep/src/com/android/quickstep/views/RecentsView.java
index ff0c984b6d..2474b690a8 100644
--- a/quickstep/src/com/android/quickstep/views/RecentsView.java
+++ b/quickstep/src/com/android/quickstep/views/RecentsView.java
@@ -41,6 +41,7 @@ import static com.android.launcher3.anim.Interpolators.FINAL_FRAME;
 import static com.android.launcher3.anim.Interpolators.LINEAR;
 import static com.android.launcher3.anim.Interpolators.OVERSHOOT_0_75;
 import static com.android.launcher3.anim.Interpolators.clampToProgress;
+import static com.android.launcher3.config.FeatureFlags.ENABLE_LAUNCH_FROM_STAGED_APP;
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_OVERVIEW_ACTIONS_SPLIT;
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_TASK_CLEAR_ALL;
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_TASK_DISMISS_SWIPE_UP;
@@ -125,7 +126,6 @@ import androidx.annotation.Nullable;
 import androidx.annotation.UiThread;
 import androidx.core.graphics.ColorUtils;
 
-import com.android.launcher3.AbstractFloatingView;
 import com.android.launcher3.BaseActivity;
 import com.android.launcher3.BaseActivity.MultiWindowModeChangedListener;
 import com.android.launcher3.DeviceProfile;
@@ -2903,6 +2903,11 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
                     false /* fadeWithThumbnail */, true /* isStagedTask */);
         }
 
+        // TODO (b/257513449): Launch animation not fully complete. OK to remove flag once it is.
+        if (ENABLE_LAUNCH_FROM_STAGED_APP.get()) {
+            mFirstFloatingTaskView.setOnClickListener(this::animateToFullscreen);
+        }
+
         // SplitInstructionsView: animate in
         safeRemoveDragLayerView(mSplitInstructionsView);
         mSplitInstructionsView = SplitInstructionsView.getSplitInstructionsView(mActivity);
@@ -2946,6 +2951,34 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
         });
     }
 
+    private void animateToFullscreen(View view) {
+        FloatingTaskView stagedTaskView = (FloatingTaskView) view;
+
+        boolean isTablet = mActivity.getDeviceProfile().isTablet;
+        int duration = isTablet
+                ? SplitAnimationTimings.TABLET_CONFIRM_DURATION
+                : SplitAnimationTimings.PHONE_CONFIRM_DURATION;
+
+        PendingAnimation pendingAnimation = new PendingAnimation(duration);
+
+        Rect firstTaskStartingBounds = new Rect();
+        Rect firstTaskEndingBounds = new Rect();
+
+        stagedTaskView.getBoundsOnScreen(firstTaskStartingBounds);
+        mActivity.getDragLayer().getBoundsOnScreen(firstTaskEndingBounds);
+
+        stagedTaskView.addConfirmAnimation(
+                pendingAnimation,
+                new RectF(firstTaskStartingBounds),
+                firstTaskEndingBounds,
+                false /* fadeWithThumbnail */,
+                true /* isStagedTask */);
+
+        pendingAnimation.addEndListener(success -> launchStagedTask());
+
+        pendingAnimation.buildAnim().start();
+    }
+
     /**
      * Creates a {@link PendingAnimation} for dismissing the specified {@link TaskView}.
      * @param dismissedTaskView the {@link TaskView} to be dismissed
@@ -4294,11 +4327,8 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
         Rect firstTaskEndingBounds = mTempRect;
 
         boolean isTablet = mActivity.getDeviceProfile().isTablet;
-        int duration = isTablet
-                ? SplitAnimationTimings.TABLET_CONFIRM_DURATION
-                : SplitAnimationTimings.PHONE_CONFIRM_DURATION;
-        PendingAnimation pendingAnimation = new PendingAnimation(duration);
         SplitAnimationTimings timings = AnimUtils.getDeviceSplitToConfirmTimings(isTablet);
+        PendingAnimation pendingAnimation = new PendingAnimation(timings.getDuration());
 
         int halfDividerSize = getResources()
                 .getDimensionPixelSize(R.dimen.multi_window_task_divider_size) / 2;
@@ -4650,6 +4680,16 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
         return mPendingAnimation;
     }
 
+    protected void launchStagedTask() {
+        if (mSplitHiddenTaskView != null) {
+            // Split staging was started from an existing running task (in Overview)
+            mSplitHiddenTaskView.launchTask(success -> resetFromSplitSelectionState());
+        } else {
+            // Split staging was started from a new intent (from app menu in Home/AllApps)
+            mActivity.startActivity(mSplitSelectSource.intent);
+        }
+    }
+
     protected void onTaskLaunchAnimationEnd(boolean success) {
         if (success) {
             resetTaskVisuals();
diff --git a/src/com/android/launcher3/config/FeatureFlags.java b/src/com/android/launcher3/config/FeatureFlags.java
index 33f3bfdbfe..e20489c3aa 100644
--- a/src/com/android/launcher3/config/FeatureFlags.java
+++ b/src/com/android/launcher3/config/FeatureFlags.java
@@ -342,6 +342,11 @@ public final class FeatureFlags {
     public static final BooleanFlag ENABLE_DEVICE_PROFILE_LOGGING = new DeviceFlag(
             "ENABLE_DEVICE_PROFILE_LOGGING", false, "Allows DeviceProfile logging");
 
+    public static final BooleanFlag ENABLE_LAUNCH_FROM_STAGED_APP = getDebugFlag(
+            "ENABLE_LAUNCH_FROM_STAGED_APP", false,
+            "Enable the ability to tap a staged app during split select to launch it in full screen"
+    );
+
     public static void initialize(Context context) {
         synchronized (sDebugFlags) {
             for (DebugFlag flag : sDebugFlags) {