Fix flicker when releasing drag of divider
bug: 25564523
Change-Id: I9c19f40f27cc80b8e6e0e98a0d6455941bd624e7
diff --git a/services/core/java/com/android/server/wm/WindowState.java b/services/core/java/com/android/server/wm/WindowState.java
index 6d05921..a7aa9e1 100644
--- a/services/core/java/com/android/server/wm/WindowState.java
+++ b/services/core/java/com/android/server/wm/WindowState.java
@@ -1886,10 +1886,16 @@
Configuration newConfig) throws RemoteException {
DisplayInfo displayInfo = getDisplayInfo();
mTmpRect.set(0, 0, displayInfo.logicalWidth, displayInfo.logicalHeight);
- boolean resizing = computeDragResizing();
+ // When the task is docked, we send fullscreen sized backDropFrame as soon as resizing
+ // start even if we haven't received the relayout window, so that the client requests
+ // the relayout sooner. When dragging stops, backDropFrame needs to stay fullscreen
+ // until the window to small size, otherwise the multithread renderer will shift last
+ // one or more frame to wrong offset. So here we send fullscreen backdrop if either
+ // isDragResizing() or isDragResizeChanged() is true.
+ boolean resizing = isDragResizing() || isDragResizeChanged();
+ final Rect backDropFrame = (inFreeformWorkspace() || !resizing) ? frame : mTmpRect;
mClient.resized(frame, overscanInsets, contentInsets, visibleInsets, stableInsets,
- outsets, reportDraw, newConfig, inFreeformWorkspace() || !resizing
- ? frame : mTmpRect);
+ outsets, reportDraw, newConfig, backDropFrame);
}
public void registerFocusObserver(IWindowFocusObserver observer) {