/** 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);
}
}
/** Starts the recents activity */
void startRecentsActivity(ActivityManager.RunningTaskInfo topTask, boolean isTopTaskHome) {
RecentsTaskLoader loader = RecentsTaskLoader.getInstance();
RecentsConfiguration.reinitialize(mContext, mSystemServicesProxy);
if (sInstanceLoadPlan == null) {
// Create a new load plan if onPreloadRecents() was never triggered
sInstanceLoadPlan = loader.createLoadPlan(mContext);
}
// Temporarily skip the transition (use a dummy fade) if multi stack is enabled.
// For multi-stack we need to figure out where each of the tasks are going.
if (mConfig.multiStackEnabled) {
loader.preloadTasks(sInstanceLoadPlan, true);
ArrayList<TaskStack> stacks = sInstanceLoadPlan.getAllTaskStacks();
TaskStack stack = stacks.get(0);
mDummyStackView.updateMinMaxScrollForStack(stack, mTriggeredFromAltTab, true);
TaskStackViewLayoutAlgorithm.VisibilityReport stackVr =
mDummyStackView.computeStackVisibilityReport();
ActivityOptions opts = getUnknownTransitionActivityOptions();
startAlternateRecentsActivity(
topTask,
opts,
true /* fromHome */,
false /* fromSearchHome */,
false /* fromThumbnail */,
stackVr);
return;
}
if (!sInstanceLoadPlan.hasTasks()) {
loader.preloadTasks(sInstanceLoadPlan, isTopTaskHome);
}
ArrayList<TaskStack> stacks = sInstanceLoadPlan.getAllTaskStacks();
TaskStack stack = stacks.get(0);
// Prepare the dummy stack for the transition
mDummyStackView.updateMinMaxScrollForStack(stack, mTriggeredFromAltTab, isTopTaskHome);
TaskStackViewLayoutAlgorithm.VisibilityReport stackVr =
mDummyStackView.computeStackVisibilityReport();
boolean hasRecentTasks = stack.getTaskCount() > 0;
boolean useThumbnailTransition = (topTask != null) && !isTopTaskHome && hasRecentTasks;
if (useThumbnailTransition) {
// Try starting with a thumbnail transition
ActivityOptions opts = getThumbnailTransitionActivityOptions(topTask, stack, mDummyStackView);
if (opts != null) {
startAlternateRecentsActivity(
topTask,
opts,
false /* fromHome */,
false /* fromSearchHome */,
true /* fromThumbnail */,
stackVr);
} else {
// Fall through below to the non-thumbnail transition
useThumbnailTransition = false;
}
}
if (!useThumbnailTransition) {
// If there is no thumbnail transition, but is launching from home into recents, then
// use a quick home transition and do the animation from home
if (hasRecentTasks) {
String homeActivityPackage = mSystemServicesProxy.getHomeActivityPackageName();
String searchWidgetPackage =
Prefs.getString(mContext, Prefs.Key.SEARCH_APP_WIDGET_PACKAGE, null);
// Determine whether we are coming from a search owned home activity
boolean fromSearchHome =
(homeActivityPackage != null) && homeActivityPackage.equals(searchWidgetPackage);
ActivityOptions opts = getHomeTransitionActivityOptions(fromSearchHome);
startAlternateRecentsActivity(
topTask, opts, true /* fromHome */, fromSearchHome, false /* fromThumbnail */, stackVr);
} else {
// Otherwise we do the normal fade from an unknown source
ActivityOptions opts = getUnknownTransitionActivityOptions();
startAlternateRecentsActivity(
topTask,
opts,
true /* fromHome */,
false /* fromSearchHome */,
false /* fromThumbnail */,
stackVr);
}
}
mLastToggleTime = SystemClock.elapsedRealtime();
}
