Merge "Reduce flicker when split pair switching" into tm-qpr-dev (1c2c0b52) · Commits · e / os / android_frameworks_base

libs/WindowManager/Shell/src/com/android/wm/shell/splitscreen/SplitScreenController.java

+45 −32

Original line number	Diff line number	Diff line
		@@ -154,7 +154,8 @@ public class SplitScreenController implements DragAndDropPolicy.Starter,
		private StageCoordinator mStageCoordinator;
		// Only used for the legacy recents animation from splitscreen to allow the tasks to be animated
		// outside the bounds of the roots by being reparented into a higher level fullscreen container
		private SurfaceControl mSplitTasksContainerLayer;
		private SurfaceControl mGoingToRecentsTasksLayer;
		private SurfaceControl mStartingSplitTasksLayer;

		public SplitScreenController(Context context,
		ShellInit shellInit,
		@@ -509,33 +510,33 @@ public class SplitScreenController implements DragAndDropPolicy.Starter,
		}

		RemoteAnimationTarget[] onGoingToRecentsLegacy(RemoteAnimationTarget[] apps) {
		if (ENABLE_SHELL_TRANSITIONS) return null;

		if (isSplitScreenVisible()) {
		// Evict child tasks except the top visible one under split root to ensure it could be
		// launched as full screen when switching to it on recents.
		final WindowContainerTransaction wct = new WindowContainerTransaction();
		mStageCoordinator.prepareEvictInvisibleChildTasks(wct);
		mSyncQueue.queue(wct);
		}
		return reparentSplitTasksForAnimation(apps, false /* enterSplitScreen */);
		} else {
		return null;
		}

		RemoteAnimationTarget[] onStartingSplitLegacy(RemoteAnimationTarget[] apps) {
		try {
		return reparentSplitTasksForAnimation(apps, true /* enterSplitScreen */);
		} finally {
		for (RemoteAnimationTarget appTarget : apps) {
		if (appTarget.leash != null) {
		appTarget.leash.release();
		}
		}
		SurfaceControl.Transaction t = mTransactionPool.acquire();
		if (mGoingToRecentsTasksLayer != null) {
		t.remove(mGoingToRecentsTasksLayer);
		}
		mGoingToRecentsTasksLayer = reparentSplitTasksForAnimation(apps, t,
		"SplitScreenController#onGoingToRecentsLegacy" /* callsite */);
		t.apply();
		mTransactionPool.release(t);

		return new RemoteAnimationTarget[]{mStageCoordinator.getDividerBarLegacyTarget()};
		}

		private RemoteAnimationTarget[] reparentSplitTasksForAnimation(RemoteAnimationTarget[] apps,
		boolean enterSplitScreen) {
		RemoteAnimationTarget[] onStartingSplitLegacy(RemoteAnimationTarget[] apps) {
		if (ENABLE_SHELL_TRANSITIONS) return null;

		if (enterSplitScreen) {
		int openingApps = 0;
		for (int i = 0; i < apps.length; ++i) {
		if (apps[i].mode == MODE_OPENING) openingApps++;
		@@ -544,32 +545,44 @@ public class SplitScreenController implements DragAndDropPolicy.Starter,
		// Not having enough apps to enter split screen
		return null;
		}
		} else if (!isSplitScreenVisible()) {
		return null;

		SurfaceControl.Transaction t = mTransactionPool.acquire();
		if (mStartingSplitTasksLayer != null) {
		t.remove(mStartingSplitTasksLayer);
		}
		mStartingSplitTasksLayer = reparentSplitTasksForAnimation(apps, t,
		"SplitScreenController#onStartingSplitLegacy" /* callsite */);
		t.apply();
		mTransactionPool.release(t);

		final SurfaceControl.Transaction transaction = mTransactionPool.acquire();
		if (mSplitTasksContainerLayer != null) {
		// Remove the previous layer before recreating
		transaction.remove(mSplitTasksContainerLayer);
		try {
		return new RemoteAnimationTarget[]{mStageCoordinator.getDividerBarLegacyTarget()};
		} finally {
		for (RemoteAnimationTarget appTarget : apps) {
		if (appTarget.leash != null) {
		appTarget.leash.release();
		}
		}
		}
		}

		private SurfaceControl reparentSplitTasksForAnimation(RemoteAnimationTarget[] apps,
		SurfaceControl.Transaction t, String callsite) {
		final SurfaceControl.Builder builder = new SurfaceControl.Builder(new SurfaceSession())
		.setContainerLayer()
		.setName("RecentsAnimationSplitTasks")
		.setHidden(false)
		.setCallsite("SplitScreenController#onGoingtoRecentsLegacy");
		.setCallsite(callsite);
		mRootTDAOrganizer.attachToDisplayArea(DEFAULT_DISPLAY, builder);
		mSplitTasksContainerLayer = builder.build();
		final SurfaceControl splitTasksLayer = builder.build();

		for (int i = 0; i < apps.length; ++i) {
		final RemoteAnimationTarget appTarget = apps[i];
		transaction.reparent(appTarget.leash, mSplitTasksContainerLayer);
		transaction.setPosition(appTarget.leash, appTarget.screenSpaceBounds.left,
		t.reparent(appTarget.leash, splitTasksLayer);
		t.setPosition(appTarget.leash, appTarget.screenSpaceBounds.left,
		appTarget.screenSpaceBounds.top);
		}
		transaction.apply();
		mTransactionPool.release(transaction);
		return new RemoteAnimationTarget[]{mStageCoordinator.getDividerBarLegacyTarget()};
		return splitTasksLayer;
		}
		/**
		* Sets drag info to be logged when splitscreen is entered.