Merge "Reduce computing unused ChangeInfo in Transition" into tm-qpr-dev

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

@@ -341,7 +341,11 @@ public class DisplayArea<T extends WindowContainer> extends WindowContainer<T> {
             if (childArea == null) {
                 continue;
             }
-            pw.println(prefix + "* " + childArea.getName());
+            pw.print(prefix + "* " + childArea.getName());
+            if (childArea.isOrganized()) {
+                pw.print(" (organized)");
+            }
+            pw.println();
             if (childArea.isTaskDisplayArea()) {
                 // TaskDisplayArea can only contain task. And it is already printed by display.
                 continue;

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

@@ -3458,9 +3458,8 @@ class DisplayContent extends RootDisplayArea implements WindowManagerPolicy.Disp
 
     @Override
     public void dump(PrintWriter pw, String prefix, boolean dumpAll) {
-        super.dump(pw, prefix, dumpAll);
         pw.print(prefix);
-        pw.println("Display: mDisplayId=" + mDisplayId + " rootTasks=" + getRootTaskCount());
+        pw.println("Display: mDisplayId=" + mDisplayId + (isOrganized() ? " (organized)" : ""));
         final String subPrefix = "  " + prefix;
         pw.print(subPrefix); pw.print("init="); pw.print(mInitialDisplayWidth); pw.print("x");
         pw.print(mInitialDisplayHeight); pw.print(" "); pw.print(mInitialDisplayDensity);
@@ -3491,6 +3490,7 @@ class DisplayContent extends RootDisplayArea implements WindowManagerPolicy.Disp
         pw.println(" mTouchExcludeRegion=" + mTouchExcludeRegion);
 
         pw.println();
+        super.dump(pw, prefix, dumpAll);
         pw.print(prefix); pw.print("mLayoutSeq="); pw.println(mLayoutSeq);
 
         pw.print("  mCurrentFocus="); pw.println(mCurrentFocus);
@@ -3582,6 +3582,7 @@ class DisplayContent extends RootDisplayArea implements WindowManagerPolicy.Disp
         pw.println();
         mInsetsStateController.dump(prefix, pw);
         mDwpcHelper.dump(prefix, pw);
+        pw.println();
     }
 
     @Override

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

@@ -3457,7 +3457,6 @@ class RootWindowContainer extends WindowContainer<DisplayContent>
             final DisplayContent display = getChildAt(i);
             display.dump(pw, prefix, dumpAll);
         }
-        pw.println();
     }
 
     /**

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

@@ -167,9 +167,9 @@ class Transition implements BLASTSyncEngine.TransactionReadyListener {
     private SurfaceControl.Transaction mFinishTransaction = null;
 
     /**
-     * Contains change infos for both participants and all ancestors. We have to track ancestors
-     * because they are all promotion candidates and thus we need their start-states
-     * to be captured.
+     * Contains change infos for both participants and all remote-animatable ancestors. The
+     * ancestors can be the promotion candidates so their start-states need to be captured.
+     * @see #getAnimatableParent
      */
     final ArrayMap<WindowContainer, ChangeInfo> mChanges = new ArrayMap<>();
 
@@ -417,8 +417,9 @@ class Transition implements BLASTSyncEngine.TransactionReadyListener {
                 mSyncId, wc);
         // "snapshot" all parents (as potential promotion targets). Do this before checking
         // if this is already a participant in case it has since been re-parented.
-        for (WindowContainer curr = wc.getParent(); curr != null && !mChanges.containsKey(curr);
-                curr = curr.getParent()) {
+        for (WindowContainer<?> curr = getAnimatableParent(wc);
+                curr != null && !mChanges.containsKey(curr);
+                curr = getAnimatableParent(curr)) {
             mChanges.put(curr, new ChangeInfo(curr));
             if (isReadyGroup(curr)) {
                 mReadyTracker.addGroup(curr);
@@ -1299,6 +1300,16 @@ class Transition implements BLASTSyncEngine.TransactionReadyListener {
         return sb.toString();
     }
 
+    /** Returns the parent that the remote animator can animate or control. */
+    private static WindowContainer<?> getAnimatableParent(WindowContainer<?> wc) {
+        WindowContainer<?> parent = wc.getParent();
+        while (parent != null
+                && (!parent.canCreateRemoteAnimationTarget() && !parent.isOrganized())) {
+            parent = parent.getParent();
+        }
+        return parent;
+    }
+
     private static boolean reportIfNotTop(WindowContainer wc) {
         // Organized tasks need to be reported anyways because Core won't show() their surfaces
         // and we can't rely on onTaskAppeared because it isn't in sync.
@@ -1522,7 +1533,8 @@ class Transition implements BLASTSyncEngine.TransactionReadyListener {
             intermediates.clear();
             boolean foundParentInTargets = false;
             // Collect the intermediate parents between target and top changed parent.
-            for (WindowContainer<?> p = wc.getParent(); p != null; p = p.getParent()) {
+            for (WindowContainer<?> p = getAnimatableParent(wc); p != null;
+                    p = getAnimatableParent(p)) {
                 final ChangeInfo parentChange = changes.get(p);
                 if (parentChange == null || !parentChange.hasChanged(p)) break;
                 if (p.mRemoteToken == null) {

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

@@ -113,12 +113,6 @@ class WallpaperController {
 
     private boolean mShouldUpdateZoom;
 
-    /**
-     * Temporary storage for taking a screenshot of the wallpaper.
-     * @see #screenshotWallpaperLocked()
-     */
-    private WindowState mTmpTopWallpaper;
-
     @Nullable private Point mLargestDisplaySize = null;
 
     private final FindWallpaperTargetResult mFindResults = new FindWallpaperTargetResult();
@@ -962,21 +956,16 @@ class WallpaperController {
     }
 
     WindowState getTopVisibleWallpaper() {
-        mTmpTopWallpaper = null;
-
         for (int curTokenNdx = mWallpaperTokens.size() - 1; curTokenNdx >= 0; curTokenNdx--) {
             final WallpaperWindowToken token = mWallpaperTokens.get(curTokenNdx);
-            token.forAllWindows(w -> {
-                final WindowStateAnimator winAnim = w.mWinAnimator;
-                if (winAnim != null && winAnim.getShown() && winAnim.mLastAlpha > 0f) {
-                    mTmpTopWallpaper = w;
-                    return true;
+            for (int i = token.getChildCount() - 1; i >= 0; i--) {
+                final WindowState w = token.getChildAt(i);
+                if (w.mWinAnimator.getShown() && w.mWinAnimator.mLastAlpha > 0f) {
+                    return w;
                 }
-                return false;
-            }, true /* traverseTopToBottom */);
+            }
         }
-
-        return mTmpTopWallpaper;
+        return null;
     }
 
     /**

services/tests/wmtests/src/com/android/server/wm/TransitionTests.java

@@ -476,6 +476,8 @@ public class TransitionTests extends WindowTestsBase {
         wallpaperWindow.mHasSurface = true;
         doReturn(true).when(mDisplayContent).isAttached();
         transition.collect(mDisplayContent);
+        assertFalse("The change of non-interesting window container should be skipped",
+                transition.mChanges.containsKey(mDisplayContent.getParent()));
         mDisplayContent.getWindowConfiguration().setRotation(
                 (mDisplayContent.getWindowConfiguration().getRotation() + 1) % 4);