Merge changes Ibd9f22af,Id42f5276 into sc-qpr1-dev

* changes:
  Revert "Add API to specify background color for animations"
  Stop relying on background color attribute to set task transition background

core/java/android/view/animation/Animation.java

@@ -19,7 +19,6 @@ package android.view.animation;
 import android.annotation.AnimRes;
 import android.annotation.ColorInt;
 import android.annotation.InterpolatorRes;
-import android.app.ActivityThread;
 import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.res.TypedArray;
@@ -259,6 +258,8 @@ public abstract class Animation implements Cloneable {
 
         setZAdjustment(a.getInt(com.android.internal.R.styleable.Animation_zAdjustment, ZORDER_NORMAL));
 
+        setBackgroundColor(a.getInt(com.android.internal.R.styleable.Animation_background, 0));
+
         setDetachWallpaper(
                 a.getBoolean(com.android.internal.R.styleable.Animation_detachWallpaper, false));
         setShowWallpaper(
@@ -270,15 +271,6 @@ public abstract class Animation implements Cloneable {
 
         a.recycle();
 
-        Context uiContext = ActivityThread.currentActivityThread().getSystemUiContext();
-        TypedArray uiStyledAttrs = uiContext
-                .obtainStyledAttributes(attrs, com.android.internal.R.styleable.Animation);
-
-        setBackgroundColor(
-                uiStyledAttrs.getColor(com.android.internal.R.styleable.Animation_background, 0));
-
-        uiStyledAttrs.recycle();
-
         if (resID > 0) {
             setInterpolator(context, resID);
         }
@@ -640,15 +632,16 @@ public abstract class Animation implements Cloneable {
     }
 
     /**
-     * Set background behind an animation.
+     * Set background behind animation.
      *
-     * @param bg The background color. If 0, no background.
+     * @param bg The background color.  If 0, no background.  Currently must
+     * be black, with any desired alpha level.
      *
      * @deprecated None of window animations are running with background color.
      */
     @Deprecated
     public void setBackgroundColor(@ColorInt int bg) {
-        mBackgroundColor = bg;
+        // The background color is not needed any more, do nothing.
     }
 
     /**
@@ -810,7 +803,7 @@ public abstract class Animation implements Cloneable {
     @Deprecated
     @ColorInt
     public int getBackgroundColor() {
-        return mBackgroundColor;
+        return 0;
     }
 
     /**

core/res/res/values/attrs.xml

@@ -6822,8 +6822,9 @@
                  content for the duration of the animation. -->
             <enum name="bottom" value="-1" />
         </attr>
-        <!-- Special background behind animation. Only for use with task animations.
+        <!-- Special background behind animation.  Only for use with window
-             If 0, the default, there is no background. -->
+             animations.  Can only be a color, and only black.  If 0, the
+             default, there is no background. -->
         <attr name="background" />
         <!-- Special option for window animations: if this window is on top
              of a wallpaper, don't animate the wallpaper with it. -->

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

@@ -16,7 +16,6 @@
 
 package com.android.server.wm;
 
-import android.annotation.ColorInt;
 import android.util.proto.ProtoOutputStream;
 import android.view.SurfaceControl;
 import android.view.SurfaceControl.Transaction;
@@ -107,14 +106,4 @@ interface AnimationAdapter {
     default boolean shouldDeferAnimationFinish(Runnable endDeferFinishCallback) {
         return false;
     }
-
-    /**
-     * Gets the background color to show behind an animation.
-     *
-     * @return The background color to show behind an animation (0 for no background color).
-     */
-    @ColorInt
-    default int getBackgroundColor() {
-        return 0;
-    }
 }

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

@@ -19,7 +19,6 @@ package com.android.server.wm;
 import static com.android.server.wm.AnimationAdapterProto.LOCAL;
 import static com.android.server.wm.LocalAnimationAdapterProto.ANIMATION_SPEC;
 
-import android.annotation.ColorInt;
 import android.os.SystemClock;
 import android.util.proto.ProtoOutputStream;
 import android.view.SurfaceControl;
@@ -72,12 +71,6 @@ class LocalAnimationAdapter implements AnimationAdapter {
         return mSpec.calculateStatusBarTransitionStartTime();
     }
 
-    @Override
-    @ColorInt
-    public int getBackgroundColor() {
-        return mSpec.getBackgroundColor();
-    }
-
     @Override
     public void dump(PrintWriter pw, String prefix) {
         mSpec.dump(pw, prefix);
@@ -156,9 +149,5 @@ class LocalAnimationAdapter implements AnimationAdapter {
         }
 
         void dumpDebugInner(ProtoOutputStream proto);
-
-        default int getBackgroundColor() {
-            return 0;
-        }
     }
 }

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

@@ -21,7 +21,6 @@ import static com.android.server.wm.AnimationSpecProto.WINDOW;
 import static com.android.server.wm.WindowAnimationSpecProto.ANIMATION;
 import static com.android.server.wm.WindowStateAnimator.ROOT_TASK_CLIP_NONE;
 
-import android.annotation.ColorInt;
 import android.graphics.Point;
 import android.graphics.Rect;
 import android.os.SystemClock;
@@ -85,12 +84,6 @@ public class WindowAnimationSpec implements AnimationSpec {
         return mAnimation.computeDurationHint();
     }
 
-    @Override
-    @ColorInt
-    public int getBackgroundColor() {
-        return mAnimation.getBackgroundColor();
-    }
-
     @Override
     public void apply(Transaction t, SurfaceControl leash, long currentPlayTime) {
         final TmpValues tmp = mThreadLocalTmps.get();

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

@@ -30,6 +30,10 @@ import static android.os.Trace.TRACE_TAG_WINDOW_MANAGER;
 import static android.os.UserHandle.USER_NULL;
 import static android.view.SurfaceControl.Transaction;
 import static android.view.WindowManager.LayoutParams.INVALID_WINDOW_TYPE;
+import static android.view.WindowManager.TRANSIT_OLD_TASK_CLOSE;
+import static android.view.WindowManager.TRANSIT_OLD_TASK_OPEN;
+import static android.view.WindowManager.TRANSIT_OLD_TASK_TO_BACK;
+import static android.view.WindowManager.TRANSIT_OLD_TASK_TO_FRONT;
 
 import static com.android.internal.protolog.ProtoLogGroup.WM_DEBUG_APP_TRANSITIONS;
 import static com.android.internal.protolog.ProtoLogGroup.WM_DEBUG_APP_TRANSITIONS_ANIM;
@@ -59,10 +63,13 @@ import static com.android.server.wm.WindowManagerService.logWithStack;
 import static com.android.server.wm.WindowStateAnimator.ROOT_TASK_CLIP_AFTER_ANIM;
 
 import android.annotation.CallSuper;
+import android.annotation.ColorInt;
 import android.annotation.IntDef;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
+import android.app.ActivityThread;
 import android.app.WindowConfiguration;
+import android.content.Context;
 import android.content.pm.ActivityInfo;
 import android.content.res.Configuration;
 import android.graphics.Point;
@@ -88,6 +95,7 @@ import android.view.animation.Animation;
 import android.window.IWindowContainerToken;
 import android.window.WindowContainerToken;
 
+import com.android.internal.R;
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.protolog.common.ProtoLog;
 import com.android.internal.util.ToBooleanFunction;
@@ -2732,24 +2740,23 @@ class WindowContainer<E extends WindowContainer> extends ConfigurationContainer<
             }
 
             TaskDisplayArea taskDisplayArea = getTaskDisplayArea();
-            int backgroundColor = adapter.getBackgroundColor();
+            boolean isSettingBackgroundColor = taskDisplayArea != null
+                    && isTransitionWithBackgroundColor(transit);
 
-            boolean shouldSetBackgroundColor = taskDisplayArea != null && backgroundColor != 0;
+            if (isSettingBackgroundColor) {
+                Context uiContext = ActivityThread.currentActivityThread().getSystemUiContext();
+                @ColorInt int backgroundColor = uiContext.getColor(R.color.overview_background);
 
-            if (shouldSetBackgroundColor) {
                 taskDisplayArea.setBackgroundColor(backgroundColor);
             }
 
-            Runnable clearColorBackground = () -> {
+            final Runnable cleanUpCallback = isSettingBackgroundColor
-                if (shouldSetBackgroundColor) {
+                    ? taskDisplayArea::clearBackgroundColor : () -> {};
-                    taskDisplayArea.clearBackgroundColor();
-                }
-            };
 
             startAnimation(getPendingTransaction(), adapter, !isVisible(),
                     ANIMATION_TYPE_APP_TRANSITION,
-                    (type, anim) -> clearColorBackground.run(),
+                    (type, anim) -> cleanUpCallback.run(),
-                    clearColorBackground);
+                    cleanUpCallback);
 
             if (adapter.getShowWallpaper()) {
                 getDisplayContent().pendingLayoutChanges |= FINISH_LAYOUT_REDO_WALLPAPER;
@@ -2761,6 +2768,13 @@ class WindowContainer<E extends WindowContainer> extends ConfigurationContainer<
         }
     }
 
+    private boolean isTransitionWithBackgroundColor(@TransitionOldType int transit) {
+        return transit == TRANSIT_OLD_TASK_OPEN
+                || transit == TRANSIT_OLD_TASK_CLOSE
+                || transit == TRANSIT_OLD_TASK_TO_FRONT
+                || transit == TRANSIT_OLD_TASK_TO_BACK;
+    }
+
     final SurfaceAnimationRunner getSurfaceAnimationRunner() {
         return mWmService.mSurfaceAnimationRunner;
     }