Refactoring a few things with the full screen overlay and enter animation. (6057c915) · Commits · e / os / android_frameworks_base

packages/SystemUI/src/com/android/systemui/recents/AlternateRecentsComponent.java

+11 −7

Original line number	Original line	Diff line number	Diff line
	@@ -28,6 +28,7 @@ import android.graphics.Bitmap;
	import android.graphics.Canvas;		import android.graphics.Canvas;
	import android.graphics.Rect;		import android.graphics.Rect;
	import android.os.Handler;		import android.os.Handler;
			import android.os.SystemClock;
	import android.os.UserHandle;		import android.os.UserHandle;
	import android.view.View;		import android.view.View;
	import com.android.systemui.R;		import com.android.systemui.R;
	@@ -166,6 +167,7 @@ public class AlternateRecentsComponent implements ActivityOptions.OnAnimationSta

	public void onConfigurationChanged(Configuration newConfig) {		public void onConfigurationChanged(Configuration newConfig) {
	mConfig = RecentsConfiguration.reinitialize(mContext);		mConfig = RecentsConfiguration.reinitialize(mContext);
			mConfig.updateOnConfigurationChange();
	mWindowRect = mSystemServicesProxy.getWindowRect();		mWindowRect = mSystemServicesProxy.getWindowRect();
	mConfig.getTaskStackBounds(mWindowRect.width(), mWindowRect.height(), mTaskStackBounds);		mConfig.getTaskStackBounds(mWindowRect.width(), mWindowRect.height(), mTaskStackBounds);
	sLastScreenshot = null;		sLastScreenshot = null;
	@@ -271,11 +273,12 @@ public class AlternateRecentsComponent implements ActivityOptions.OnAnimationSta
	* screenshot, then we will use that for the transition.		* screenshot, then we will use that for the transition.
	*/		*/
	ActivityOptions getThumbnailTransitionActivityOptions(ActivityManager.RunningTaskInfo topTask) {		ActivityOptions getThumbnailTransitionActivityOptions(ActivityManager.RunningTaskInfo topTask) {

			if (Constants.DebugFlags.App.EnableScreenshotAppTransition) {
	// Recycle the last screenshot		// Recycle the last screenshot
	consumeLastScreenshot();		consumeLastScreenshot();

	// Take the full screenshot		// Take the full screenshot
	if (Constants.DebugFlags.App.EnableScreenshotAppTransition) {
	sLastScreenshot = mSystemServicesProxy.takeAppScreenshot();		sLastScreenshot = mSystemServicesProxy.takeAppScreenshot();
	if (sLastScreenshot != null) {		if (sLastScreenshot != null) {
	return ActivityOptions.makeCustomAnimation(mContext,		return ActivityOptions.makeCustomAnimation(mContext,
	@@ -287,21 +290,22 @@ public class AlternateRecentsComponent implements ActivityOptions.OnAnimationSta
	// If the screenshot fails, then load the first task thumbnail and use that		// If the screenshot fails, then load the first task thumbnail and use that
	Bitmap firstThumbnail = mSystemServicesProxy.getTaskThumbnail(topTask.id);		Bitmap firstThumbnail = mSystemServicesProxy.getTaskThumbnail(topTask.id);
	if (firstThumbnail != null) {		if (firstThumbnail != null) {
	Rect taskRect = getThumbnailTransitionRect(topTask.id);		// Update the destination rect
			Rect toTaskRect = getThumbnailTransitionRect(topTask.id);

	// Create the new thumbnail for the animation down		// Create the new thumbnail for the animation down
	// XXX: We should find a way to optimize this so we don't need to create a new bitmap		// XXX: We should find a way to optimize this so we don't need to create a new bitmap
	Bitmap thumbnail = Bitmap.createBitmap(taskRect.width(), taskRect.height(),		Bitmap thumbnail = Bitmap.createBitmap(toTaskRect.width(), toTaskRect.height(),
	Bitmap.Config.ARGB_8888);		Bitmap.Config.ARGB_8888);
	int size = Math.min(firstThumbnail.getWidth(), firstThumbnail.getHeight());		int size = Math.min(firstThumbnail.getWidth(), firstThumbnail.getHeight());
	Canvas c = new Canvas(thumbnail);		Canvas c = new Canvas(thumbnail);
	c.drawBitmap(firstThumbnail, new Rect(0, 0, size, size),		c.drawBitmap(firstThumbnail, new Rect(0, 0, size, size),
	new Rect(0, 0, taskRect.width(), taskRect.height()), null);		new Rect(0, 0, toTaskRect.width(), toTaskRect.height()), null);
	c.setBitmap(null);		c.setBitmap(null);
	// Recycle the old thumbnail		// Recycle the old thumbnail
	firstThumbnail.recycle();		firstThumbnail.recycle();
	return ActivityOptions.makeThumbnailScaleDownAnimation(mStatusBarView,		return ActivityOptions.makeThumbnailScaleDownAnimation(mStatusBarView,
	thumbnail, taskRect.left, taskRect.top, this);		thumbnail, toTaskRect.left, toTaskRect.top, this);
	}		}

	// If both the screenshot and thumbnail fails, then just fall back to the default transition		// If both the screenshot and thumbnail fails, then just fall back to the default transition

packages/SystemUI/src/com/android/systemui/recents/RecentsActivity.java

+15 −15

Original line number	Original line	Diff line number	Diff line
	@@ -206,6 +206,8 @@ public class RecentsActivity extends Activity implements RecentsView.RecentsView
	mConfig.launchedWithAltTab = launchIntent.getBooleanExtra(		mConfig.launchedWithAltTab = launchIntent.getBooleanExtra(
	AlternateRecentsComponent.EXTRA_TRIGGERED_FROM_ALT_TAB, false);		AlternateRecentsComponent.EXTRA_TRIGGERED_FROM_ALT_TAB, false);
	mConfig.launchedWithNoRecentTasks = !root.hasTasks();		mConfig.launchedWithNoRecentTasks = !root.hasTasks();
			mConfig.launchedToTaskId = launchIntent.getIntExtra(
			AlternateRecentsComponent.EXTRA_TRIGGERED_FROM_TASK_ID, -1);

	// Add the default no-recents layout		// Add the default no-recents layout
	if (mEmptyView == null) {		if (mEmptyView == null) {
	@@ -372,11 +374,6 @@ public class RecentsActivity extends Activity implements RecentsView.RecentsView
	// Update the recent tasks		// Update the recent tasks
	updateRecentsTasks(getIntent());		updateRecentsTasks(getIntent());

	// Update if we are getting a configuration change
	if (savedInstanceState != null) {
	onConfigurationChange();
	}

	// Register the broadcast receiver to handle messages when the screen is turned off		// Register the broadcast receiver to handle messages when the screen is turned off
	IntentFilter filter = new IntentFilter();		IntentFilter filter = new IntentFilter();
	filter.addAction(Intent.ACTION_SCREEN_OFF);		filter.addAction(Intent.ACTION_SCREEN_OFF);
	@@ -402,6 +399,12 @@ public class RecentsActivity extends Activity implements RecentsView.RecentsView
	mFullScreenOverlayView.setCallbacks(this);		mFullScreenOverlayView.setCallbacks(this);
	mFullScreenOverlayView.prepareAnimateOnEnterRecents(AlternateRecentsComponent.getLastScreenshot());		mFullScreenOverlayView.prepareAnimateOnEnterRecents(AlternateRecentsComponent.getLastScreenshot());
	}		}

			// Update if we are getting a configuration change
			if (savedInstanceState != null) {
			mConfig.updateOnConfigurationChange();
			onConfigurationChange();
			}
	}		}

	void onConfigurationChange() {		void onConfigurationChange() {
	@@ -416,6 +419,7 @@ public class RecentsActivity extends Activity implements RecentsView.RecentsView
	@Override		@Override
	protected void onNewIntent(Intent intent) {		protected void onNewIntent(Intent intent) {
	super.onNewIntent(intent);		super.onNewIntent(intent);
			setIntent(intent);

	if (Console.Enabled) {		if (Console.Enabled) {
	Console.logDivider(Constants.Log.App.SystemUIHandshake);		Console.logDivider(Constants.Log.App.SystemUIHandshake);
	@@ -615,19 +619,15 @@ public class RecentsActivity extends Activity implements RecentsView.RecentsView
	/** FullscreenTransitionOverlayView.FullScreenTransitionViewCallbacks Implementation **/		/** FullscreenTransitionOverlayView.FullScreenTransitionViewCallbacks Implementation **/

	@Override		@Override
	public void onEnterAnimationComplete(boolean canceled) {		public void onEnterAnimationComplete() {
	if (!canceled) {
	// Reset the full screenshot transition view		// Reset the full screenshot transition view
	if (Constants.DebugFlags.App.EnableScreenshotAppTransition) {		if (Constants.DebugFlags.App.EnableScreenshotAppTransition) {
	mFullScreenOverlayView.reset();		mFullScreenOverlayView.reset();
	}

	// XXX: We should clean up the screenshot in this case as well, but it needs to happen
	// after to animate up
	}
	// Recycle the full screen screenshot		// Recycle the full screen screenshot
	AlternateRecentsComponent.consumeLastScreenshot();		AlternateRecentsComponent.consumeLastScreenshot();
	}		}
			}

	/** RecentsView.RecentsViewCallbacks Implementation **/		/** RecentsView.RecentsViewCallbacks Implementation **/

packages/SystemUI/src/com/android/systemui/recents/RecentsConfiguration.java

+2 −0

Original line number	Original line	Diff line number	Diff line
	@@ -100,6 +100,7 @@ public class RecentsConfiguration {
	public boolean launchedFromAppWithThumbnail;		public boolean launchedFromAppWithThumbnail;
	public boolean launchedFromAppWithScreenshot;		public boolean launchedFromAppWithScreenshot;
	public boolean launchedFromHome;		public boolean launchedFromHome;
			public int launchedToTaskId;

	/** Dev options */		/** Dev options */
	public boolean developerOptionsEnabled;		public boolean developerOptionsEnabled;
	@@ -255,6 +256,7 @@ public class RecentsConfiguration {
	launchedFromAppWithThumbnail = false;		launchedFromAppWithThumbnail = false;
	launchedFromAppWithScreenshot = false;		launchedFromAppWithScreenshot = false;
	launchedFromHome = false;		launchedFromHome = false;
			launchedToTaskId = -1;
	}		}

	/** Returns whether the search bar app widget exists. */		/** Returns whether the search bar app widget exists. */

packages/SystemUI/src/com/android/systemui/recents/views/FullscreenTransitionOverlayView.java

+84 −39

Original line number	Original line	Diff line number	Diff line
	@@ -23,16 +23,20 @@ import android.animation.ObjectAnimator;
	import android.content.Context;		import android.content.Context;
	import android.graphics.Bitmap;		import android.graphics.Bitmap;
	import android.graphics.Canvas;		import android.graphics.Canvas;
			import android.graphics.Color;
	import android.graphics.Paint;		import android.graphics.Paint;
			import android.graphics.PorterDuff;
			import android.graphics.PorterDuffColorFilter;
	import android.graphics.Rect;		import android.graphics.Rect;
	import android.util.AttributeSet;		import android.util.AttributeSet;
	import android.view.View;		import android.view.View;
			import android.view.animation.AccelerateInterpolator;
	import android.widget.FrameLayout;		import android.widget.FrameLayout;
	import android.widget.ImageView;		import android.widget.ImageView;
	import com.android.systemui.R;		import com.android.systemui.R;
	import com.android.systemui.recents.misc.Console;
	import com.android.systemui.recents.Constants;		import com.android.systemui.recents.Constants;
	import com.android.systemui.recents.RecentsConfiguration;		import com.android.systemui.recents.RecentsConfiguration;
			import com.android.systemui.recents.misc.Console;


	/**		/**
	@@ -43,7 +47,7 @@ public class FullscreenTransitionOverlayView extends FrameLayout {

	/** The FullscreenTransitionOverlayView callbacks */		/** The FullscreenTransitionOverlayView callbacks */
	public interface FullScreenTransitionViewCallbacks {		public interface FullScreenTransitionViewCallbacks {
	void onEnterAnimationComplete(boolean canceled);		void onEnterAnimationComplete();
	}		}

	RecentsConfiguration mConfig;		RecentsConfiguration mConfig;
	@@ -53,6 +57,11 @@ public class FullscreenTransitionOverlayView extends FrameLayout {
	ImageView mScreenshotView;		ImageView mScreenshotView;
	Rect mClipRect = new Rect();		Rect mClipRect = new Rect();
	Paint mLayerPaint = new Paint();		Paint mLayerPaint = new Paint();
			PorterDuffColorFilter mDimColorFilter = new PorterDuffColorFilter(0, PorterDuff.Mode.MULTIPLY);

			int mDim;
			int mMaxDim;
			AccelerateInterpolator mDimInterpolator = new AccelerateInterpolator();

	boolean mIsAnimating;		boolean mIsAnimating;
	AnimatorSet mEnterAnimation;		AnimatorSet mEnterAnimation;
	@@ -73,8 +82,10 @@ public class FullscreenTransitionOverlayView extends FrameLayout {
	int defStyleRes) {		int defStyleRes) {
	super(context, attrs, defStyleAttr, defStyleRes);		super(context, attrs, defStyleAttr, defStyleRes);
	mConfig = RecentsConfiguration.getInstance();		mConfig = RecentsConfiguration.getInstance();
			mMaxDim = mConfig.taskStackMaxDim;
	setClipTop(getClipTop());		setClipTop(getClipTop());
	setClipBottom(getClipBottom());		setClipBottom(getClipBottom());
			setDim(getDim());
	setWillNotDraw(false);		setWillNotDraw(false);
	}		}

	@@ -91,7 +102,7 @@ public class FullscreenTransitionOverlayView extends FrameLayout {
	/** Sets the top clip */		/** Sets the top clip */
	public void setClipTop(int clip) {		public void setClipTop(int clip) {
	mClipRect.top = clip;		mClipRect.top = clip;
	postInvalidateOnAnimation();		setClipBounds(mClipRect);
	}		}

	/** Gets the top clip */		/** Gets the top clip */
	@@ -102,7 +113,7 @@ public class FullscreenTransitionOverlayView extends FrameLayout {
	/** Sets the bottom clip */		/** Sets the bottom clip */
	public void setClipBottom(int clip) {		public void setClipBottom(int clip) {
	mClipRect.bottom = clip;		mClipRect.bottom = clip;
	postInvalidateOnAnimation();		setClipBounds(mClipRect);
	}		}

	/** Gets the top clip */		/** Gets the top clip */
	@@ -110,20 +121,28 @@ public class FullscreenTransitionOverlayView extends FrameLayout {
	return mClipRect.bottom;		return mClipRect.bottom;
	}		}

			/** Returns the current dim. */
			public void setDim(int dim) {
			mDim = dim;
			/*
			int inverse = 255 - mDim;
			mDimColorFilter.setColor(Color.argb(0xFF, inverse, inverse, inverse));
			mLayerPaint.setColorFilter(mDimColorFilter);
			setLayerType(LAYER_TYPE_HARDWARE, mLayerPaint);
			*/
			}

			/** Returns the current dim. */
			public int getDim() {
			return mDim;
			}

	@Override		@Override
	protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {		protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
	super.onMeasure(widthMeasureSpec, heightMeasureSpec);		super.onMeasure(widthMeasureSpec, heightMeasureSpec);
	mClipRect.set(0, 0, getMeasuredWidth(), getMeasuredHeight());		mClipRect.set(0, 0, getMeasuredWidth(), getMeasuredHeight());
	}		}

	@Override
	public void draw(Canvas canvas) {
	int restoreCount = canvas.save(Canvas.CLIP_SAVE_FLAG \| Canvas.CLIP_TO_LAYER_SAVE_FLAG);
	canvas.clipRect(mClipRect);
	super.draw(canvas);
	canvas.restoreToCount(restoreCount);
	}

	@Override		@Override
	public boolean hasOverlappingRendering() {		public boolean hasOverlappingRendering() {
	return false;		return false;
	@@ -140,6 +159,7 @@ public class FullscreenTransitionOverlayView extends FrameLayout {

	setClipTop(0);		setClipTop(0);
	setClipBottom(getMeasuredHeight());		setClipBottom(getMeasuredHeight());
			setDim(0);
	setTranslationY(0f);		setTranslationY(0f);
	setScaleX(1f);		setScaleX(1f);
	setScaleY(1f);		setScaleY(1f);
	@@ -153,7 +173,7 @@ public class FullscreenTransitionOverlayView extends FrameLayout {

	/** Resets the transition view */		/** Resets the transition view */
	public void reset() {		public void reset() {
	setVisibility(View.INVISIBLE);		setVisibility(View.GONE);
	mScreenshotView.setImageDrawable(null);		mScreenshotView.setImageDrawable(null);
	}		}

	@@ -172,12 +192,20 @@ public class FullscreenTransitionOverlayView extends FrameLayout {
	}		}

	// Calculate the bottom clip		// Calculate the bottom clip
	Rect taskRect = ctx.taskRect;		Rect targetTaskRect = ctx.targetTaskTransform.rect;
	float scale = (float) taskRect.width() / getMeasuredWidth();		float scale = (float) targetTaskRect.width() / getMeasuredWidth();
	float scaleYOffset = ((1f - scale) * getMeasuredHeight()) / 2;		float scaleYOffset = ((1f - scale) * getMeasuredHeight()) / 2;
	float scaledTopInset = (int) (scale * mConfig.systemInsets.top);		float scaledTopInset = (int) (scale * mConfig.systemInsets.top);
	int translationY = (int) -scaleYOffset + (int) (mConfig.systemInsets.top - scaledTopInset) + taskRect.top;		int translationY = (int) -scaleYOffset + (int) (mConfig.systemInsets.top - scaledTopInset)
	int clipBottom = mConfig.systemInsets.top + (int) (taskRect.height() / scale);		+ targetTaskRect.top;
			int clipBottom = mConfig.systemInsets.top + (int) (targetTaskRect.height() / scale);

			// Calculate the dim
			float minScale = TaskStackViewLayoutAlgorithm.StackPeekMinScale;
			float scaleRange = 1f - minScale;
			float dim = (1f - ctx.targetTaskTransform.scale) / scaleRange;
			dim = mDimInterpolator.getInterpolation(Math.min(dim, 1f));
			int toDim = Math.max(0, Math.min(mMaxDim, (int) (dim * 255)));

	// Enable the HW Layers on the screenshot view		// Enable the HW Layers on the screenshot view
	mScreenshotView.setLayerType(View.LAYER_TYPE_HARDWARE, mLayerPaint);		mScreenshotView.setLayerType(View.LAYER_TYPE_HARDWARE, mLayerPaint);
	@@ -187,14 +215,17 @@ public class FullscreenTransitionOverlayView extends FrameLayout {
	mEnterAnimation.addListener(new AnimatorListenerAdapter() {		mEnterAnimation.addListener(new AnimatorListenerAdapter() {
	@Override		@Override
	public void onAnimationEnd(Animator animation) {		public void onAnimationEnd(Animator animation) {
	// Notify any callbacks		post(new Runnable() {
	mCb.onEnterAnimationComplete(false);		@Override
	// Run the given post-anim runnable		public void run() {
	postAnimRunnable.run();
	// Mark that we are no longer animating		// Mark that we are no longer animating
	mIsAnimating = false;		mIsAnimating = false;
	// Disable the HW Layers on this view		// Disable the HW Layers on this view
	setLayerType(View.LAYER_TYPE_NONE, mLayerPaint);		setLayerType(View.LAYER_TYPE_NONE, mLayerPaint);
			// Notify any callbacks
			mCb.onEnterAnimationComplete();
			// Run the given post-anim runnable
			postAnimRunnable.run();

	if (Console.Enabled) {		if (Console.Enabled) {
	Console.logTraceTime(Constants.Log.App.TimeRecentsScreenshotTransition,		Console.logTraceTime(Constants.Log.App.TimeRecentsScreenshotTransition,
	@@ -202,16 +233,21 @@ public class FullscreenTransitionOverlayView extends FrameLayout {
	}		}
	}		}
	});		});
			}
			});
			// XXX: Translation y should be negative initially to simulate moving from the top of the screen?
	mEnterAnimation.setStartDelay(0);		mEnterAnimation.setStartDelay(0);
	mEnterAnimation.setDuration(475);		mEnterAnimation.setDuration(475);
	mEnterAnimation.setInterpolator(mConfig.fastOutSlowInInterpolator);		mEnterAnimation.setInterpolator(mConfig.fastOutSlowInInterpolator);
	mEnterAnimation.playTogether(		mEnterAnimation.playTogether(
	ObjectAnimator.ofInt(this, "clipTop", mConfig.systemInsets.top),		// ObjectAnimator.ofInt(this, "clipTop", mConfig.systemInsets.top),
	ObjectAnimator.ofInt(this, "clipBottom", clipBottom),		ObjectAnimator.ofInt(this, "clipBottom", clipBottom),
			ObjectAnimator.ofInt(this, "dim", toDim),
	ObjectAnimator.ofFloat(this, "translationY", translationY),		ObjectAnimator.ofFloat(this, "translationY", translationY),
	ObjectAnimator.ofFloat(this, "scaleX", scale),		ObjectAnimator.ofFloat(this, "scaleX", scale),
	ObjectAnimator.ofFloat(this, "scaleY", scale)		ObjectAnimator.ofFloat(this, "scaleY", scale)
	);		);
			setClipTop(mConfig.systemInsets.top);
	mEnterAnimation.start();		mEnterAnimation.start();

	mIsAnimating = true;		mIsAnimating = true;
	@@ -226,19 +262,27 @@ public class FullscreenTransitionOverlayView extends FrameLayout {
	mEnterAnimation.cancel();		mEnterAnimation.cancel();
	}		}

			// Enable the HW Layers on the screenshot view
			mScreenshotView.setLayerType(View.LAYER_TYPE_HARDWARE, mLayerPaint);

	// Compose the animation		// Compose the animation
	mEnterAnimation = new AnimatorSet();		mEnterAnimation = new AnimatorSet();
	mEnterAnimation.addListener(new AnimatorListenerAdapter() {		mEnterAnimation.addListener(new AnimatorListenerAdapter() {
	@Override		@Override
	public void onAnimationEnd(Animator animation) {		public void onAnimationEnd(Animator animation) {
	// Notify any callbacks		post(new Runnable() {
	mCb.onEnterAnimationComplete(true);		@Override
	// Run the given post-anim runnable		public void run() {
	postAnimRunnable.run();
	// Mark that we are no longer animating		// Mark that we are no longer animating
	mIsAnimating = false;		mIsAnimating = false;
	// Disable the HW Layers on the screenshot view		// Disable the HW Layers on the screenshot view
	mScreenshotView.setLayerType(View.LAYER_TYPE_NONE, mLayerPaint);		mScreenshotView.setLayerType(View.LAYER_TYPE_NONE, mLayerPaint);
			// Notify any callbacks
			mCb.onEnterAnimationComplete();
			// Run the given post-anim runnable
			postAnimRunnable.run();
			}
			});
	}		}
	});		});
	mEnterAnimation.setDuration(475);		mEnterAnimation.setDuration(475);
	@@ -246,6 +290,7 @@ public class FullscreenTransitionOverlayView extends FrameLayout {
	mEnterAnimation.playTogether(		mEnterAnimation.playTogether(
	ObjectAnimator.ofInt(this, "clipTop", 0),		ObjectAnimator.ofInt(this, "clipTop", 0),
	ObjectAnimator.ofInt(this, "clipBottom", getMeasuredHeight()),		ObjectAnimator.ofInt(this, "clipBottom", getMeasuredHeight()),
			ObjectAnimator.ofInt(this, "dim", 0),
	ObjectAnimator.ofFloat(this, "translationY", 0f),		ObjectAnimator.ofFloat(this, "translationY", 0f),
	ObjectAnimator.ofFloat(this, "scaleX", 1f),		ObjectAnimator.ofFloat(this, "scaleX", 1f),
	ObjectAnimator.ofFloat(this, "scaleY", 1f)		ObjectAnimator.ofFloat(this, "scaleY", 1f)

packages/SystemUI/src/com/android/systemui/recents/views/TaskStackView.java

+36 −12

Original line number	Original line	Diff line number	Diff line
	@@ -25,6 +25,7 @@ import android.content.Context;
	import android.graphics.Canvas;		import android.graphics.Canvas;
	import android.graphics.Rect;		import android.graphics.Rect;
	import android.graphics.Region;		import android.graphics.Region;
			import android.os.SystemClock;
	import android.view.LayoutInflater;		import android.view.LayoutInflater;
	import android.view.MotionEvent;		import android.view.MotionEvent;
	import android.view.View;		import android.view.View;
	@@ -813,24 +814,47 @@ public class TaskStackView extends FrameLayout implements TaskStack.TaskStackCal
	}		}

	if (mStack.getTaskCount() > 0) {		if (mStack.getTaskCount() > 0) {
	// Animate all the task views into view
	TaskViewTransform transform = new TaskViewTransform();
	TaskStack.GroupTaskIndex groupTaskIndex = new TaskStack.GroupTaskIndex();		TaskStack.GroupTaskIndex groupTaskIndex = new TaskStack.GroupTaskIndex();
	mStack.getGroupIndexForTask(mStack.getFrontMostTask(), groupTaskIndex);
	mStackAlgorithm.getStackTransform(groupTaskIndex.groupIndex, groupTaskIndex.taskIndex,		if (Constants.DebugFlags.App.EnableScreenshotAppTransition) {
	getInitialStackScroll(), transform);		// Find the target task with the specified id
	ctx.taskRect = transform.rect;		ArrayList<Task> tasks = mStack.getTasks();
	ctx.stackRectSansPeek = mStackAlgorithm.mStackRectSansPeek;		Task targetTask = null;
			int targetTaskId = mConfig.launchedToTaskId;
			if (targetTaskId != -1) {
			int taskCount = tasks.size();
			for (int i = 0; i < taskCount; i++) {
			Task t = tasks.get(i);
			if (t.key.id == targetTaskId) {
			targetTask = t;
			break;
			}
			}
			}

			// Find the group and task index of the target task
			if (targetTask != null) {
			mStack.getGroupIndexForTask(targetTask, groupTaskIndex);
			ctx.targetTaskTransform = new TaskViewTransform();
			mStackAlgorithm.getStackTransform(groupTaskIndex.groupIndex,
			groupTaskIndex.taskIndex, getStackScroll(), ctx.targetTaskTransform);
			Rect taskStackBounds = new Rect();
			mConfig.getTaskStackBounds(getMeasuredWidth(), getMeasuredHeight(), taskStackBounds);
			ctx.targetTaskTransform.rect.offset(taskStackBounds.left, taskStackBounds.top);
			}
			}

			// Animate all the task views into view
	int childCount = getChildCount();		int childCount = getChildCount();
	for (int i = childCount - 1; i >= 0; i--) {		for (int i = childCount - 1; i >= 0; i--) {
	TaskView tv = (TaskView) getChildAt(i);		TaskView tv = (TaskView) getChildAt(i);
	ctx.stackViewIndex = i;		ctx.currentTaskTransform = new TaskViewTransform();
	ctx.stackViewCount = childCount;		ctx.currentStackViewIndex = i;
	ctx.isFrontMost = (i == (getChildCount() - 1));		ctx.currentStackViewCount = childCount;
	ctx.transform = new TaskViewTransform();		ctx.isCurrentTaskFrontMost = (i == (getChildCount() - 1));
	mStack.getGroupIndexForTask(tv.getTask(), groupTaskIndex);		mStack.getGroupIndexForTask(tv.getTask(), groupTaskIndex);
	mStackAlgorithm.getStackTransform(groupTaskIndex.groupIndex, groupTaskIndex.taskIndex,		mStackAlgorithm.getStackTransform(groupTaskIndex.groupIndex, groupTaskIndex.taskIndex,
	getStackScroll(), ctx.transform);		getStackScroll(), ctx.currentTaskTransform);
	tv.startEnterRecentsAnimation(ctx);		tv.startEnterRecentsAnimation(ctx);
	}		}