commit 4f52bc6f78085bc40110bce5cc485f715223556e
author Wale Ogunwale <ogunwale@google.com> Thu Sep 24 13:47:31 2015 -0700
committer Wale Ogunwale <ogunwale@google.com> Thu Sep 24 14:31:11 2015 -0700
tree baa91597f32362cea03f1bd6862a95fce7cdbdf3
parent 6e3cc291ea698d63f9eced987c0697b1745c6da8

Batch ACTION_MOVE events to vsync boundries when resizing task

- Created helper class BatchedInputEventReceiver for batching
ACTION_MOVE events to vsync boundries.
- Switched TaskPositioner to use new helper class for input events
so we reduce the number of input events we process per vsync.

Bug: 24375616
Change-Id: I4ee27949b956784fb89d8f190497e4765522c9d3

services/core/java/com/android/server/wm/TaskPositioner.java

diff --git a/services/core/java/com/android/server/wm/TaskPositioner.java b/services/core/java/com/android/server/wm/TaskPositioner.java
index a94be83..c4ff886 100644
--- a/services/core/java/com/android/server/wm/TaskPositioner.java
+++ b/services/core/java/com/android/server/wm/TaskPositioner.java
@@ -35,12 +35,13 @@
 import android.os.RemoteException;
 import android.util.DisplayMetrics;
 import android.util.Slog;
+import android.view.Choreographer;
 import android.view.Display;
 import android.view.DisplayInfo;
 import android.view.InputChannel;
 import android.view.InputDevice;
 import android.view.InputEvent;
-import android.view.InputEventReceiver;
+import android.view.BatchedInputEventReceiver;
 import android.view.MotionEvent;
 import android.view.SurfaceControl;
 import android.view.WindowManager;
@@ -102,9 +103,10 @@
     InputApplicationHandle mDragApplicationHandle;
     InputWindowHandle mDragWindowHandle;
 
-    private final class WindowPositionerEventReceiver extends InputEventReceiver {
-        public WindowPositionerEventReceiver(InputChannel inputChannel, Looper looper) {
-            super(inputChannel, looper);
+    private final class WindowPositionerEventReceiver extends BatchedInputEventReceiver {
+        public WindowPositionerEventReceiver(
+                InputChannel inputChannel, Looper looper, Choreographer choreographer) {
+            super(inputChannel, looper, choreographer);
         }
 
         @Override
@@ -214,8 +216,8 @@
         mClientChannel = channels[1];
         mService.mInputManager.registerInputChannel(mServerChannel, null);
 
-        mInputEventReceiver = new WindowPositionerEventReceiver(mClientChannel,
-                mService.mH.getLooper());
+        mInputEventReceiver = new WindowPositionerEventReceiver(
+                mClientChannel, mService.mH.getLooper(), mService.mChoreographer);
 
         mDragApplicationHandle = new InputApplicationHandle(null);
         mDragApplicationHandle.name = TAG;