Android/frameworks_base
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Dont update thumbnails of freeform windows on focus change

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Windows should not update their thumbnails upon a focus change since
it costs a lot of time to capture the content and the thumbnail would
be outdated short time later anyways since the window is still
visible anyways.

Bug: 23562904
Change-Id: If5d23a1058e83030770905827d682f649a579f7a
This commit is contained in:
Skuhne
2015-08-27 09:47:20 -07:00
parent 306a1d22b8
commit 17690ffcf7
2 changed files with 16 additions and 1 deletions
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9
services/core/java/com/android/server/am/ActivityStack.java
View File

@@ -902,7 +902,14 @@ final class ActivityStack {
prev.task.touchActiveTime();
clearLaunchTime(prev);
final ActivityRecord next = mStackSupervisor.topRunningActivityLocked();
if (mService.mHasRecents && (next == null || next.noDisplay || next.task != prev.task || uiSleeping)) {
// In freeform mode we only update the thumbnail when there is no thumbnail yet since every
// focus change will request a thumbnail to be taken.
// Note furthermore that since windows can change their content in freeform mode all the
// time a thumbnail is possibly constantly outdated.
if (mService.mHasRecents &&
(next == null || next.noDisplay || next.task != prev.task || uiSleeping) &&
(!prev.task.hasThumbnail() ||
prev.task.stack.mStackId != FREEFORM_WORKSPACE_STACK_ID)) {
prev.updateThumbnailLocked(screenshotActivities(prev), null);
}
stopFullyDrawnTraceIfNeeded();

8
services/core/java/com/android/server/am/TaskRecord.java
View File

@@ -477,6 +477,14 @@ final class TaskRecord {
setNextAffiliate(null);
}
/**
* Returns true when we have a thumbnail.
* @return Returns true if there is a thumbnail.
*/
boolean hasThumbnail() {
return mLastThumbnail != null;
}
/**
* Sets the last thumbnail.
* @return whether the thumbnail was set