/** Returns the transition rect for the given task id. */
TaskViewTransform getThumbnailTransitionTransform(
TaskStack stack, TaskStackView stackView, int runningTaskId, Task runningTaskOut) {
// Find the running task in the TaskStack
Task task = null;
ArrayList<Task> tasks = stack.getTasks();
if (runningTaskId != -1) {
// Otherwise, try and find the task with the
int taskCount = tasks.size();
for (int i = taskCount - 1; i >= 0; i--) {
Task t = tasks.get(i);
if (t.key.id == runningTaskId) {
task = t;
runningTaskOut.copyFrom(t);
break;
}
}
}
if (task == null) {
// If no task is specified or we can not find the task just use the front most one
task = tasks.get(tasks.size() - 1);
runningTaskOut.copyFrom(task);
}
// Get the transform for the running task
stackView.getScroller().setStackScrollToInitialState();
mTmpTransform =
stackView
.getStackAlgorithm()
.getStackTransform(task, stackView.getScroller().getStackScroll(), mTmpTransform, null);
return mTmpTransform;
}
/** Prepares the header bar layout. */
void reloadHeaderBarLayout() {
Resources res = mContext.getResources();
mWindowRect = mSystemServicesProxy.getWindowRect();
mStatusBarHeight = res.getDimensionPixelSize(com.android.internal.R.dimen.status_bar_height);
mNavBarHeight = res.getDimensionPixelSize(com.android.internal.R.dimen.navigation_bar_height);
mNavBarWidth = res.getDimensionPixelSize(com.android.internal.R.dimen.navigation_bar_width);
mConfig = RecentsConfiguration.reinitialize(mContext, mSystemServicesProxy);
mConfig.updateOnConfigurationChange();
Rect searchBarBounds = new Rect();
// Try and pre-emptively bind the search widget on startup to ensure that we
// have the right thumbnail bounds to animate to.
// Note: We have to reload the widget id before we get the task stack bounds below
if (mSystemServicesProxy.getOrBindSearchAppWidget(mContext, mAppWidgetHost) != null) {
mConfig.getSearchBarBounds(
mWindowRect.width(), mWindowRect.height(), mStatusBarHeight, searchBarBounds);
}
mConfig.getAvailableTaskStackBounds(
mWindowRect.width(),
mWindowRect.height(),
mStatusBarHeight,
(mConfig.hasTransposedNavBar ? mNavBarWidth : 0),
searchBarBounds,
mTaskStackBounds);
if (mConfig.isLandscape && mConfig.hasTransposedNavBar) {
mSystemInsets.set(0, mStatusBarHeight, mNavBarWidth, 0);
} else {
mSystemInsets.set(0, mStatusBarHeight, 0, mNavBarHeight);
}
// Inflate the header bar layout so that we can rebind and draw it for the transition
TaskStack stack = new TaskStack();
mDummyStackView = new TaskStackView(mContext, stack);
TaskStackViewLayoutAlgorithm algo = mDummyStackView.getStackAlgorithm();
Rect taskStackBounds = new Rect(mTaskStackBounds);
taskStackBounds.bottom -= mSystemInsets.bottom;
algo.computeRects(mWindowRect.width(), mWindowRect.height(), taskStackBounds);
Rect taskViewSize = algo.getUntransformedTaskViewSize();
int taskBarHeight = res.getDimensionPixelSize(R.dimen.recents_task_bar_height);
synchronized (mHeaderBarLock) {
mHeaderBar =
(TaskViewHeader) mInflater.inflate(R.layout.recents_task_view_header, null, false);
mHeaderBar.measure(
View.MeasureSpec.makeMeasureSpec(taskViewSize.width(), View.MeasureSpec.EXACTLY),
View.MeasureSpec.makeMeasureSpec(taskBarHeight, View.MeasureSpec.EXACTLY));
mHeaderBar.layout(0, 0, taskViewSize.width(), taskBarHeight);
}
}
/** ** TaskStackView.TaskStackCallbacks Implementation *** */
@Override
public void onTaskViewClicked(
final TaskStackView stackView,
final TaskView tv,
final TaskStack stack,
final Task task,
final boolean lockToTask) {
// Notify any callbacks of the launching of a new task
if (mCb != null) {
mCb.onTaskViewClicked();
}
// Skip if we are already launching tasks
if (mAlreadyLaunchingTask) {
return;
}
mAlreadyLaunchingTask = true;
// Upfront the processing of the thumbnail
TaskViewTransform transform = new TaskViewTransform();
View sourceView;
int offsetX = 0;
int offsetY = 0;
float stackScroll = stackView.getScroller().getStackScroll();
if (tv == null) {
// If there is no actual task view, then use the stack view as the source view
// and then offset to the expected transform rect, but bound this to just
// outside the display rect (to ensure we don't animate from too far away)
sourceView = stackView;
transform =
stackView.getStackAlgorithm().getStackTransform(task, stackScroll, transform, null);
offsetX = transform.rect.left;
offsetY = mConfig.displayRect.height();
} else {
sourceView = tv.mThumbnailView;
transform =
stackView.getStackAlgorithm().getStackTransform(task, stackScroll, transform, null);
}
// Compute the thumbnail to scale up from
final SystemServicesProxy ssp = RecentsTaskLoader.getInstance().getSystemServicesProxy();
ActivityOptions opts = null;
if (task.thumbnail != null && task.thumbnail.getWidth() > 0 && task.thumbnail.getHeight() > 0) {
Bitmap b;
if (tv != null) {
// Disable any focused state before we draw the header
if (tv.isFocusedTask()) {
tv.unsetFocusedTask();
}
float scale = tv.getScaleX();
int fromHeaderWidth = (int) (tv.mHeaderView.getMeasuredWidth() * scale);
int fromHeaderHeight = (int) (tv.mHeaderView.getMeasuredHeight() * scale);
b = Bitmap.createBitmap(fromHeaderWidth, fromHeaderHeight, Bitmap.Config.ARGB_8888);
if (Constants.DebugFlags.App.EnableTransitionThumbnailDebugMode) {
b.eraseColor(0xFFff0000);
} else {
Canvas c = new Canvas(b);
c.scale(tv.getScaleX(), tv.getScaleY());
tv.mHeaderView.draw(c);
c.setBitmap(null);
}
} else {
// Notify the system to skip the thumbnail layer by using an ALPHA_8 bitmap
b = Bitmap.createBitmap(1, 1, Bitmap.Config.ALPHA_8);
}
ActivityOptions.OnAnimationStartedListener animStartedListener = null;
if (lockToTask) {
animStartedListener =
new ActivityOptions.OnAnimationStartedListener() {
boolean mTriggered = false;
@Override
public void onAnimationStarted() {
if (!mTriggered) {
postDelayed(
new Runnable() {
@Override
public void run() {
ssp.lockCurrentTask();
}
},
350);
mTriggered = true;
}
}
};
}
opts =
ActivityOptions.makeThumbnailAspectScaleUpAnimation(
sourceView,
b,
offsetX,
offsetY,
transform.rect.width(),
transform.rect.height(),
animStartedListener);
}
final ActivityOptions launchOpts = opts;
final Runnable launchRunnable =
new Runnable() {
@Override
public void run() {
if (task.isActive) {
// Bring an active task to the foreground
ssp.moveTaskToFront(task.key.id, launchOpts);
} else {
if (ssp.startActivityFromRecents(
getContext(), task.key.id, task.activityLabel, launchOpts)) {
if (launchOpts == null && lockToTask) {
ssp.lockCurrentTask();
}
} else {
// Dismiss the task and return the user to home if we fail to
// launch the task
onTaskViewDismissed(task);
if (mCb != null) {
mCb.onTaskLaunchFailed();
}
}
}
}
};
// Launch the app right away if there is no task view, otherwise, animate the icon out first
if (tv == null) {
post(launchRunnable);
} else {
if (!task.group.isFrontMostTask(task)) {
// For affiliated tasks that are behind other tasks, we must animate the front cards
// out of view before starting the task transition
stackView.startLaunchTaskAnimation(tv, launchRunnable, lockToTask);
} else {
// Otherwise, we can start the task transition immediately
stackView.startLaunchTaskAnimation(tv, null, lockToTask);
postDelayed(launchRunnable, 17);
}
}
}
/** ** TaskStackView.TaskStackCallbacks Implementation *** */
@Override
public void onTaskViewClicked(
final TaskStackView stackView,
final TaskView tv,
final TaskStack stack,
final Task task,
final boolean lockToTask) {
Log.d(TAG, "onTaskViewClicked: ");
// Notify any callbacks of the launching of a new task
if (mCb != null) {
mCb.onTaskViewClicked();
}
// Upfront the processing of the thumbnail
TaskViewTransform transform = new TaskViewTransform();
View sourceView;
int offsetX = 0;
int offsetY = 0;
float stackScroll = stackView.getScroller().getStackScroll();
if (tv == null) {
// If there is no actual task view, then use the stack view as the source view
// and then offset to the expected transform rect, but bound this to just
// outside the display rect (to ensure we don't animate from too far away)
sourceView = stackView;
transform =
stackView.getStackAlgorithm().getStackTransform(task, stackScroll, transform, null);
offsetX = transform.rect.left;
offsetY = mConfig.displayRect.height();
} else {
sourceView = tv.mThumbnailView;
transform =
stackView.getStackAlgorithm().getStackTransform(task, stackScroll, transform, null);
}
// Compute the thumbnail to scale up from
final SystemServicesProxy ssp = RecentsTaskLoader.getInstance().getSystemServicesProxy();
ActivityOptions opts = null;
if (task.thumbnail != null && task.thumbnail.getWidth() > 0 && task.thumbnail.getHeight() > 0) {
ActivityOptions.OnAnimationStartedListener animStartedListener = null;
if (lockToTask) {
animStartedListener =
new ActivityOptions.OnAnimationStartedListener() {
boolean mTriggered = false;
@Override
public void onAnimationStarted() {
if (!mTriggered) {
postDelayed(
new Runnable() {
@Override
public void run() {
mCb.onScreenPinningRequest();
}
},
350);
mTriggered = true;
}
}
};
}
if (tv != null) {
postDrawHeaderThumbnailTransitionRunnable(
tv, offsetX, offsetY, transform, animStartedListener);
}
if (mConfig.multiStackEnabled) {
opts =
ActivityOptions.makeCustomAnimation(
sourceView.getContext(),
R.anim.recents_from_unknown_enter,
R.anim.recents_from_unknown_exit,
sourceView.getHandler(),
animStartedListener);
} else {
opts =
ActivityOptions.makeThumbnailAspectScaleUpAnimation(
sourceView,
Bitmap.createBitmap(1, 1, Bitmap.Config.ALPHA_8).createAshmemBitmap(),
offsetX,
offsetY,
transform.rect.width(),
transform.rect.height(),
sourceView.getHandler(),
animStartedListener);
}
}
final ActivityOptions launchOpts = opts;
final Runnable launchRunnable =
new Runnable() {
@Override
public void run() {
if (task.isActive) {
// Bring an active task to the foreground
ssp.moveTaskToFront(task.key.id, launchOpts);
} else {
if (ssp.startActivityFromRecents(
getContext(), task.key.id, task.activityLabel, launchOpts)) {
if (launchOpts == null && lockToTask) {
mCb.onScreenPinningRequest();
}
} else {
// Dismiss the task and return the user to home if we fail to
// launch the task
onTaskViewDismissed(task);
if (mCb != null) {
mCb.onTaskLaunchFailed();
}
// Keep track of failed launches
MetricsLogger.count(getContext(), "overview_task_launch_failed", 1);
}
}
}
};
// Keep track of the index of the task launch
int taskIndexFromFront = 0;
int taskIndex = stack.indexOfTask(task);
if (taskIndex > -1) {
taskIndexFromFront = stack.getTaskCount() - taskIndex - 1;
}
MetricsLogger.histogram(getContext(), "overview_task_launch_index", taskIndexFromFront);
// Launch the app right away if there is no task view, otherwise, animate the icon out first
if (tv == null) {
launchRunnable.run();
} else {
if (task.group != null && !task.group.isFrontMostTask(task)) {
// For affiliated tasks that are behind other tasks, we must animate the front cards
// out of view before starting the task transition
stackView.startLaunchTaskAnimation(tv, launchRunnable, lockToTask);
} else {
// Otherwise, we can start the task transition immediately
stackView.startLaunchTaskAnimation(tv, null, lockToTask);
launchRunnable.run();
}
}
}