Check if all apps are translucent when finishing recents animation.

If true, then launcher will be finished at the end of the animation.
This fixes the issue where taskbar will stash in overview because
we assumed the app was fully opaque.

Bug: 354627538
Test: open app, go to overview, tap icon, pause app, note no issue
Flag: EXEMPT bugfix
Change-Id: Id51e0d9f63c9615127e27455f7edf171381c2011
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarLauncherStateController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarLauncherStateController.java
index 2998892..dce377d 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarLauncherStateController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarLauncherStateController.java
@@ -1009,7 +1009,12 @@
 
         @Override
         public void onRecentsAnimationFinished(RecentsAnimationController controller) {
-            endGestureStateOverride(!controller.getFinishTargetIsLauncher(), false /*canceled*/);
+            endGestureStateOverride(!controller.getFinishTargetIsLauncher(),
+                    controller.getLauncherIsVisibleAtFinish(), false /*canceled*/);
+        }
+
+        private void endGestureStateOverride(boolean finishedToApp, boolean canceled) {
+            endGestureStateOverride(finishedToApp, finishedToApp, canceled);
         }
 
         /**
@@ -1019,11 +1024,13 @@
          *
          * @param finishedToApp {@code true} if the recents animation finished to showing an app and
          *                      not workspace or overview
+         * @param launcherIsVisible {code true} if launcher is visible at finish
          * @param canceled      {@code true} if the recents animation was canceled instead of
          *                      finishing
          *                      to completion
          */
-        private void endGestureStateOverride(boolean finishedToApp, boolean canceled) {
+        private void endGestureStateOverride(boolean finishedToApp, boolean launcherIsVisible,
+                boolean canceled) {
             mCallbacks.removeListener(this);
             mTaskBarRecentsAnimationListener = null;
             ((RecentsView) mLauncher.getOverviewPanel()).setTaskLaunchListener(null);
@@ -1032,18 +1039,27 @@
                 mSkipNextRecentsAnimEnd = false;
                 return;
             }
-            updateStateForUserFinishedToApp(finishedToApp);
+            updateStateForUserFinishedToApp(finishedToApp, launcherIsVisible);
         }
     }
 
     /**
+     * @see #updateStateForUserFinishedToApp(boolean, boolean)
+     */
+    private void updateStateForUserFinishedToApp(boolean finishedToApp) {
+        updateStateForUserFinishedToApp(finishedToApp, !finishedToApp);
+    }
+
+    /**
      * Updates the visible state immediately to ensure a seamless handoff.
      *
      * @param finishedToApp True iff user is in an app.
+     * @param launcherIsVisible True iff launcher is still visible (ie. transparent app)
      */
-    private void updateStateForUserFinishedToApp(boolean finishedToApp) {
+    private void updateStateForUserFinishedToApp(boolean finishedToApp,
+            boolean launcherIsVisible) {
         // Update the visible state immediately to ensure a seamless handoff
-        boolean launcherVisible = !finishedToApp;
+        boolean launcherVisible = !finishedToApp || launcherIsVisible;
         updateStateForFlag(FLAG_TRANSITION_TO_VISIBLE, false);
         updateStateForFlag(FLAG_VISIBLE, launcherVisible);
         applyState();
@@ -1052,7 +1068,7 @@
         if (DEBUG) {
             Log.d(TAG, "endGestureStateOverride - FLAG_IN_APP: " + finishedToApp);
         }
-        controller.updateStateForFlag(FLAG_IN_APP, finishedToApp);
+        controller.updateStateForFlag(FLAG_IN_APP, finishedToApp && !launcherIsVisible);
         controller.applyState();
     }
 
diff --git a/quickstep/src/com/android/quickstep/RecentsAnimationController.java b/quickstep/src/com/android/quickstep/RecentsAnimationController.java
index dcb0108..60fcff8 100644
--- a/quickstep/src/com/android/quickstep/RecentsAnimationController.java
+++ b/quickstep/src/com/android/quickstep/RecentsAnimationController.java
@@ -53,6 +53,8 @@
     private boolean mFinishRequested = false;
     // Only valid when mFinishRequested == true.
     private boolean mFinishTargetIsLauncher;
+    // Only valid when mFinishRequested == true
+    private boolean mLauncherIsVisibleAtFinish;
     private RunnableList mPendingFinishCallbacks = new RunnableList();
 
     public RecentsAnimationController(RecentsAnimationControllerCompat controller,
@@ -117,13 +119,27 @@
     }
 
     @UiThread
+    public void finish(boolean toRecents, boolean launcherIsVisibleAtFinish,
+            Runnable onFinishComplete, boolean sendUserLeaveHint) {
+        Preconditions.assertUIThread();
+        finishController(toRecents, launcherIsVisibleAtFinish, onFinishComplete, sendUserLeaveHint,
+                false);
+    }
+
+    @UiThread
     public void finishController(boolean toRecents, Runnable callback, boolean sendUserLeaveHint) {
-        finishController(toRecents, callback, sendUserLeaveHint, false /* forceFinish */);
+        finishController(toRecents, false, callback, sendUserLeaveHint, false /* forceFinish */);
     }
 
     @UiThread
     public void finishController(boolean toRecents, Runnable callback, boolean sendUserLeaveHint,
             boolean forceFinish) {
+        finishController(toRecents, toRecents, callback, sendUserLeaveHint, forceFinish);
+    }
+
+    @UiThread
+    public void finishController(boolean toRecents, boolean launcherIsVisibleAtFinish,
+            Runnable callback, boolean sendUserLeaveHint, boolean forceFinish) {
         mPendingFinishCallbacks.add(callback);
         if (!forceFinish && mFinishRequested) {
             // If finish has already been requested, then add the callback to the pending list.
@@ -135,6 +151,7 @@
         // Finish not yet requested
         mFinishRequested = true;
         mFinishTargetIsLauncher = toRecents;
+        mLauncherIsVisibleAtFinish = launcherIsVisibleAtFinish;
         mOnFinishedListener.accept(this);
         Runnable finishCb = () -> {
             mController.finish(toRecents, sendUserLeaveHint, new IResultReceiver.Stub() {
@@ -211,6 +228,14 @@
         return mFinishTargetIsLauncher;
     }
 
+    /**
+     * RecentsAnimationListeners can check this in onRecentsAnimationFinished() to determine whether
+     * the animation was finished to launcher vs an app.
+     */
+    public boolean getLauncherIsVisibleAtFinish() {
+        return mLauncherIsVisibleAtFinish;
+    }
+
     public void dump(String prefix, PrintWriter pw) {
         pw.println(prefix + "RecentsAnimationController:");
 
diff --git a/quickstep/src/com/android/quickstep/views/RecentsView.java b/quickstep/src/com/android/quickstep/views/RecentsView.java
index 8982850..92c93ff 100644
--- a/quickstep/src/com/android/quickstep/views/RecentsView.java
+++ b/quickstep/src/com/android/quickstep/views/RecentsView.java
@@ -5854,15 +5854,22 @@
      * Finish recents animation.
      */
     public void finishRecentsAnimation(boolean toRecents, @Nullable Runnable onFinishComplete) {
-        finishRecentsAnimation(toRecents, true /* shouldPip */, onFinishComplete);
+        finishRecentsAnimation(toRecents, false, true /* shouldPip */, onFinishComplete);
     }
 
     /**
+     * Finish recents animation.
+     */
+    public void finishRecentsAnimation(boolean toRecents, boolean shouldPip,
+            @Nullable Runnable onFinishComplete) {
+        finishRecentsAnimation(toRecents, shouldPip, false, onFinishComplete);
+    }
+    /**
      * NOTE: Whatever value gets passed through to the toRecents param may need to also be set on
      * {@link #mRecentsAnimationController#setWillFinishToHome}.
      */
     public void finishRecentsAnimation(boolean toRecents, boolean shouldPip,
-            @Nullable Runnable onFinishComplete) {
+            boolean allAppTargetsAreTranslucent, @Nullable Runnable onFinishComplete) {
         Log.d(TAG, "finishRecentsAnimation - mRecentsAnimationController: "
                 + mRecentsAnimationController);
         // TODO(b/197232424#comment#10) Move this back into onRecentsAnimationComplete(). Maybe?
@@ -5894,7 +5901,7 @@
                         tx, null /* overlay */);
             }
         }
-        mRecentsAnimationController.finish(toRecents, () -> {
+        mRecentsAnimationController.finish(toRecents, allAppTargetsAreTranslucent, () -> {
             if (onFinishComplete != null) {
                 onFinishComplete.run();
             }