Extract AppTransition from WindowManager

Refactor of WindowManagerService to move app transitions out.

Change-Id: Id3e377526a69f95a3ee4c0d97ca6fd84005beb6a
diff --git a/services/java/com/android/server/wm/AppTransition.java b/services/java/com/android/server/wm/AppTransition.java
new file mode 100644
index 0000000..a956a80
--- /dev/null
+++ b/services/java/com/android/server/wm/AppTransition.java
@@ -0,0 +1,629 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.wm;
+
+import android.app.ActivityOptions;
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.Point;
+import android.os.Debug;
+import android.os.Handler;
+import android.os.IRemoteCallback;
+import android.util.Slog;
+import android.view.WindowManager;
+import android.view.WindowManagerPolicy;
+import android.view.animation.AlphaAnimation;
+import android.view.animation.Animation;
+import android.view.animation.AnimationSet;
+import android.view.animation.AnimationUtils;
+import android.view.animation.DecelerateInterpolator;
+import android.view.animation.Interpolator;
+import android.view.animation.ScaleAnimation;
+
+import com.android.internal.util.DumpUtils.Dump;
+import com.android.server.AttributeCache;
+import com.android.server.wm.WindowManagerService.H;
+
+import java.io.PrintWriter;
+
+import static android.view.WindowManagerPolicy.TRANSIT_NONE;
+import static android.view.WindowManagerPolicy.TRANSIT_UNSET;
+
+// State management of app transitions.  When we are preparing for a
+// transition, mNextAppTransition will be the kind of transition to
+// perform or TRANSIT_NONE if we are not waiting.  If we are waiting,
+// mOpeningApps and mClosingApps are the lists of tokens that will be
+// made visible or hidden at the next transition.
+public class AppTransition implements Dump {
+    private static final String TAG = "AppTransition";
+    private static final float THUMBNAIL_ANIMATION_DECELERATE_FACTOR = 1.5f;
+    private static final boolean DEBUG_APP_TRANSITIONS = WindowManagerService.DEBUG_APP_TRANSITIONS;
+    private static final boolean DEBUG_ANIM = WindowManagerService.DEBUG_APP_TRANSITIONS;
+
+    final Context mContext;
+    final Handler mH;
+
+    int mNextAppTransition = TRANSIT_UNSET;
+    int mNextAppTransitionType = ActivityOptions.ANIM_NONE;
+    String mNextAppTransitionPackage;
+    Bitmap mNextAppTransitionThumbnail;
+    // Used for thumbnail transitions. True if we're scaling up, false if scaling down
+    boolean mNextAppTransitionScaleUp;
+    IRemoteCallback mNextAppTransitionCallback;
+    int mNextAppTransitionEnter;
+    int mNextAppTransitionExit;
+    int mNextAppTransitionStartX;
+    int mNextAppTransitionStartY;
+    int mNextAppTransitionStartWidth;
+    int mNextAppTransitionStartHeight;
+    boolean mAppTransitionReady = false;
+    boolean mAppTransitionRunning = false;
+    boolean mAppTransitionTimeout = false;
+
+    final int mConfigShortAnimTime;
+    final Interpolator mInterpolator;
+
+    AppTransition(Context context, Handler h) {
+        mContext = context;
+        mH = h;
+        mConfigShortAnimTime = context.getResources().getInteger(
+                com.android.internal.R.integer.config_shortAnimTime);
+        mInterpolator = AnimationUtils.loadInterpolator(context,
+                com.android.internal.R.interpolator.decelerate_quad);
+    }
+
+    boolean isTransitionSet() {
+        return mNextAppTransition != TRANSIT_UNSET;
+    }
+
+    boolean isTransitionNone() {
+        return mNextAppTransition == TRANSIT_NONE;
+    }
+
+    boolean isTransitionEqual(int transit) {
+        return mNextAppTransition == transit;
+    }
+
+    int getAppTransition() {
+        return mNextAppTransition; 
+     }
+
+    void setAppTransition(int transit) {
+        mNextAppTransition = transit;
+    }
+
+    boolean isReady() {
+        return mAppTransitionReady;
+    }
+
+    void setReady(boolean ready) {
+        mAppTransitionReady = ready;
+    }
+
+    boolean isRunning() {
+        return mAppTransitionRunning;
+    }
+
+    void setRunning(boolean running) {
+        mAppTransitionRunning = running;
+    }
+
+    boolean isTimeout() {
+        return mAppTransitionTimeout;
+    }
+
+    void setTimeout(boolean timeout) {
+        mAppTransitionTimeout = timeout;
+    }
+
+    Bitmap getNextAppTransitionThumbnail() {
+        return mNextAppTransitionThumbnail;
+    }
+
+    void getStartingPoint(Point outPoint) {
+        outPoint.x = mNextAppTransitionStartX;
+        outPoint.y = mNextAppTransitionStartY;
+    }
+
+    int getType() {
+        return mNextAppTransitionType;
+    }
+
+    void prepare() {
+        mAppTransitionReady = false;
+        mAppTransitionTimeout = false;
+    }
+
+    void goodToGo() {
+        mNextAppTransition = WindowManagerPolicy.TRANSIT_UNSET;
+        mAppTransitionReady = false;
+        mAppTransitionRunning = true;
+        mAppTransitionTimeout = false;
+    }
+
+    void clear() {
+        mNextAppTransitionType = ActivityOptions.ANIM_NONE;
+        mNextAppTransitionPackage = null;
+        mNextAppTransitionThumbnail = null;
+    }
+
+    private AttributeCache.Entry getCachedAnimations(WindowManager.LayoutParams lp) {
+        if (DEBUG_ANIM) Slog.v(TAG, "Loading animations: layout params pkg="
+                + (lp != null ? lp.packageName : null)
+                + " resId=0x" + (lp != null ? Integer.toHexString(lp.windowAnimations) : null));
+        if (lp != null && lp.windowAnimations != 0) {
+            // If this is a system resource, don't try to load it from the
+            // application resources.  It is nice to avoid loading application
+            // resources if we can.
+            String packageName = lp.packageName != null ? lp.packageName : "android";
+            int resId = lp.windowAnimations;
+            if ((resId&0xFF000000) == 0x01000000) {
+                packageName = "android";
+            }
+            if (DEBUG_ANIM) Slog.v(TAG, "Loading animations: picked package="
+                    + packageName);
+            return AttributeCache.instance().get(packageName, resId,
+                    com.android.internal.R.styleable.WindowAnimation);
+        }
+        return null;
+    }
+
+    private AttributeCache.Entry getCachedAnimations(String packageName, int resId) {
+        if (DEBUG_ANIM) Slog.v(TAG, "Loading animations: package="
+                + packageName + " resId=0x" + Integer.toHexString(resId));
+        if (packageName != null) {
+            if ((resId&0xFF000000) == 0x01000000) {
+                packageName = "android";
+            }
+            if (DEBUG_ANIM) Slog.v(TAG, "Loading animations: picked package="
+                    + packageName);
+            return AttributeCache.instance().get(packageName, resId,
+                    com.android.internal.R.styleable.WindowAnimation);
+        }
+        return null;
+    }
+
+    Animation loadAnimation(WindowManager.LayoutParams lp, int animAttr) {
+        int anim = 0;
+        Context context = mContext;
+        if (animAttr >= 0) {
+            AttributeCache.Entry ent = getCachedAnimations(lp);
+            if (ent != null) {
+                context = ent.context;
+                anim = ent.array.getResourceId(animAttr, 0);
+            }
+        }
+        if (anim != 0) {
+            return AnimationUtils.loadAnimation(context, anim);
+        }
+        return null;
+    }
+
+    private Animation loadAnimation(String packageName, int resId) {
+        int anim = 0;
+        Context context = mContext;
+        if (resId >= 0) {
+            AttributeCache.Entry ent = getCachedAnimations(packageName, resId);
+            if (ent != null) {
+                context = ent.context;
+                anim = resId;
+            }
+        }
+        if (anim != 0) {
+            return AnimationUtils.loadAnimation(context, anim);
+        }
+        return null;
+    }
+
+    private Animation createExitAnimationLocked(int transit, int duration) {
+        if (transit == WindowManagerPolicy.TRANSIT_WALLPAPER_INTRA_OPEN ||
+                transit == WindowManagerPolicy.TRANSIT_WALLPAPER_INTRA_CLOSE) {
+            // If we are on top of the wallpaper, we need an animation that
+            // correctly handles the wallpaper staying static behind all of
+            // the animated elements.  To do this, will just have the existing
+            // element fade out.
+            Animation a = new AlphaAnimation(1, 0);
+            a.setDetachWallpaper(true);
+            a.setDuration(duration);
+            return a;
+        }
+        // For normal animations, the exiting element just holds in place.
+        Animation a = new AlphaAnimation(1, 1);
+        a.setDuration(duration);
+        return a;
+    }
+
+    /**
+     * Compute the pivot point for an animation that is scaling from a small
+     * rect on screen to a larger rect.  The pivot point varies depending on
+     * the distance between the inner and outer edges on both sides.  This
+     * function computes the pivot point for one dimension.
+     * @param startPos  Offset from left/top edge of outer rectangle to
+     * left/top edge of inner rectangle.
+     * @param finalScale The scaling factor between the size of the outer
+     * and inner rectangles.
+     */
+    private static float computePivot(int startPos, float finalScale) {
+        final float denom = finalScale-1;
+        if (Math.abs(denom) < .0001f) {
+            return startPos;
+        }
+        return -startPos / denom;
+    }
+
+    private Animation createScaleUpAnimationLocked(int transit, boolean enter,
+                                                   int appWidth, int appHeight) {
+        Animation a = null;
+        // Pick the desired duration.  If this is an inter-activity transition,
+        // it  is the standard duration for that.  Otherwise we use the longer
+        // task transition duration.
+        int duration;
+        switch (transit) {
+            case WindowManagerPolicy.TRANSIT_ACTIVITY_OPEN:
+            case WindowManagerPolicy.TRANSIT_ACTIVITY_CLOSE:
+                duration = mContext.getResources().getInteger(
+                        com.android.internal.R.integer.config_shortAnimTime);
+                break;
+            default:
+                duration = 300;
+                break;
+        }
+        if (enter) {
+            // Entering app zooms out from the center of the initial rect.
+            float scaleW = mNextAppTransitionStartWidth / (float) appWidth;
+            float scaleH = mNextAppTransitionStartHeight / (float) appHeight;
+            Animation scale = new ScaleAnimation(scaleW, 1, scaleH, 1,
+                    computePivot(mNextAppTransitionStartX, scaleW),
+                    computePivot(mNextAppTransitionStartY, scaleH));
+            scale.setDuration(duration);
+            AnimationSet set = new AnimationSet(true);
+            Animation alpha = new AlphaAnimation(0, 1);
+            scale.setDuration(duration);
+            set.addAnimation(scale);
+            alpha.setDuration(duration);
+            set.addAnimation(alpha);
+            set.setDetachWallpaper(true);
+            a = set;
+        } else {
+            a = createExitAnimationLocked(transit, duration);
+        }
+        a.setFillAfter(true);
+        final Interpolator interpolator = AnimationUtils.loadInterpolator(mContext,
+                com.android.internal.R.interpolator.decelerate_cubic);
+        a.setInterpolator(interpolator);
+        a.initialize(appWidth, appHeight, appWidth, appHeight);
+        return a;
+    }
+
+    Animation createThumbnailAnimationLocked(int transit, boolean enter, boolean thumb,
+                                    int appWidth, int appHeight) {
+        Animation a;
+        final int thumbWidthI = mNextAppTransitionThumbnail.getWidth();
+        final float thumbWidth = thumbWidthI > 0 ? thumbWidthI : 1;
+        final int thumbHeightI = mNextAppTransitionThumbnail.getHeight();
+        final float thumbHeight = thumbHeightI > 0 ? thumbHeightI : 1;
+        // Pick the desired duration.  If this is an inter-activity transition,
+        // it  is the standard duration for that.  Otherwise we use the longer
+        // task transition duration.
+        int duration;
+        switch (transit) {
+            case WindowManagerPolicy.TRANSIT_ACTIVITY_OPEN:
+            case WindowManagerPolicy.TRANSIT_ACTIVITY_CLOSE:
+                duration = mConfigShortAnimTime;
+                break;
+            default:
+                duration = 250;
+                break;
+        }
+        if (thumb) {
+            // Animation for zooming thumbnail from its initial size to
+            // filling the screen.
+            if (mNextAppTransitionScaleUp) {
+                float scaleW = appWidth / thumbWidth;
+                float scaleH = appHeight / thumbHeight;
+
+                Animation scale = new ScaleAnimation(1, scaleW, 1, scaleH,
+                        computePivot(mNextAppTransitionStartX, 1 / scaleW),
+                        computePivot(mNextAppTransitionStartY, 1 / scaleH));
+                AnimationSet set = new AnimationSet(true);
+                Animation alpha = new AlphaAnimation(1, 0);
+                scale.setDuration(duration);
+                scale.setInterpolator(
+                        new DecelerateInterpolator(THUMBNAIL_ANIMATION_DECELERATE_FACTOR));
+                set.addAnimation(scale);
+                alpha.setDuration(duration);
+                set.addAnimation(alpha);
+                set.setFillBefore(true);
+                a = set;
+            } else {
+                float scaleW = appWidth / thumbWidth;
+                float scaleH = appHeight / thumbHeight;
+
+                Animation scale = new ScaleAnimation(scaleW, 1, scaleH, 1,
+                        computePivot(mNextAppTransitionStartX, 1 / scaleW),
+                        computePivot(mNextAppTransitionStartY, 1 / scaleH));
+                AnimationSet set = new AnimationSet(true);
+                Animation alpha = new AlphaAnimation(1, 1);
+                scale.setDuration(duration);
+                scale.setInterpolator(
+                        new DecelerateInterpolator(THUMBNAIL_ANIMATION_DECELERATE_FACTOR));
+                set.addAnimation(scale);
+                alpha.setDuration(duration);
+                set.addAnimation(alpha);
+                set.setFillBefore(true);
+
+                a = set;
+            }
+        } else if (enter) {
+            // Entering app zooms out from the center of the thumbnail.
+            if (mNextAppTransitionScaleUp) {
+                float scaleW = thumbWidth / appWidth;
+                float scaleH = thumbHeight / appHeight;
+                Animation scale = new ScaleAnimation(scaleW, 1, scaleH, 1,
+                        computePivot(mNextAppTransitionStartX, scaleW),
+                        computePivot(mNextAppTransitionStartY, scaleH));
+                scale.setDuration(duration);
+                scale.setInterpolator(
+                        new DecelerateInterpolator(THUMBNAIL_ANIMATION_DECELERATE_FACTOR));
+                scale.setFillBefore(true);
+                a = scale;
+            } else {
+                // noop animation
+                a = new AlphaAnimation(1, 1);
+                a.setDuration(duration);
+            }
+        } else {
+            // Exiting app
+            if (mNextAppTransitionScaleUp) {
+                if (transit == WindowManagerPolicy.TRANSIT_WALLPAPER_INTRA_OPEN) {
+                    // Fade out while bringing up selected activity. This keeps the
+                    // current activity from showing through a launching wallpaper
+                    // activity.
+                    a = new AlphaAnimation(1, 0);
+                } else {
+                    // noop animation
+                    a = new AlphaAnimation(1, 1);
+                }
+                a.setDuration(duration);
+            } else {
+                float scaleW = thumbWidth / appWidth;
+                float scaleH = thumbHeight / appHeight;
+                Animation scale = new ScaleAnimation(1, scaleW, 1, scaleH,
+                        computePivot(mNextAppTransitionStartX, scaleW),
+                        computePivot(mNextAppTransitionStartY, scaleH));
+                scale.setDuration(duration);
+                scale.setInterpolator(
+                        new DecelerateInterpolator(THUMBNAIL_ANIMATION_DECELERATE_FACTOR));
+                scale.setFillBefore(true);
+                AnimationSet set = new AnimationSet(true);
+                Animation alpha = new AlphaAnimation(1, 0);
+                set.addAnimation(scale);
+                alpha.setDuration(duration);
+                alpha.setInterpolator(new DecelerateInterpolator(
+                        THUMBNAIL_ANIMATION_DECELERATE_FACTOR));
+                set.addAnimation(alpha);
+                set.setFillBefore(true);
+                set.setZAdjustment(Animation.ZORDER_TOP);
+                a = set;
+            }
+        }
+        a.setFillAfter(true);
+        a.setInterpolator(mInterpolator);
+        a.initialize(appWidth, appHeight, appWidth, appHeight);
+        return a;
+    }
+
+
+    Animation loadAnimation(WindowManager.LayoutParams lp, int transit, boolean enter,
+                            int appWidth, int appHeight) {
+        Animation a;
+        if (mNextAppTransitionType == ActivityOptions.ANIM_CUSTOM) {
+            a = loadAnimation(mNextAppTransitionPackage, enter ?
+                    mNextAppTransitionEnter : mNextAppTransitionExit);
+            if (DEBUG_APP_TRANSITIONS || DEBUG_ANIM) Slog.v(TAG,
+                    "applyAnimation:"
+                    + " anim=" + a + " nextAppTransition=ANIM_CUSTOM"
+                    + " transit=" + transit + " isEntrance=" + enter
+                    + " Callers=" + Debug.getCallers(3));
+        } else if (mNextAppTransitionType == ActivityOptions.ANIM_SCALE_UP) {
+            a = createScaleUpAnimationLocked(transit, enter, appWidth, appHeight);
+            if (DEBUG_APP_TRANSITIONS || DEBUG_ANIM) Slog.v(TAG,
+                    "applyAnimation:"
+                    + " anim=" + a + " nextAppTransition=ANIM_SCALE_UP"
+                    + " transit=" + transit + " isEntrance=" + enter
+                    + " Callers=" + Debug.getCallers(3));
+        } else if (mNextAppTransitionType == ActivityOptions.ANIM_THUMBNAIL_SCALE_UP ||
+                mNextAppTransitionType == ActivityOptions.ANIM_THUMBNAIL_SCALE_DOWN) {
+            mNextAppTransitionScaleUp =
+                    (mNextAppTransitionType == ActivityOptions.ANIM_THUMBNAIL_SCALE_UP);
+            a = createThumbnailAnimationLocked(transit, enter, false, appWidth, appHeight);
+            if (DEBUG_APP_TRANSITIONS || DEBUG_ANIM) {
+                String animName = mNextAppTransitionScaleUp ?
+                        "ANIM_THUMBNAIL_SCALE_UP" : "ANIM_THUMBNAIL_SCALE_DOWN";
+                Slog.v(TAG, "applyAnimation:"
+                        + " anim=" + a + " nextAppTransition=" + animName
+                        + " transit=" + transit + " isEntrance=" + enter
+                        + " Callers=" + Debug.getCallers(3));
+            }
+        } else {
+            int animAttr = 0;
+            switch (transit) {
+                case WindowManagerPolicy.TRANSIT_ACTIVITY_OPEN:
+                    animAttr = enter
+                            ? com.android.internal.R.styleable.WindowAnimation_activityOpenEnterAnimation
+                            : com.android.internal.R.styleable.WindowAnimation_activityOpenExitAnimation;
+                    break;
+                case WindowManagerPolicy.TRANSIT_ACTIVITY_CLOSE:
+                    animAttr = enter
+                            ? com.android.internal.R.styleable.WindowAnimation_activityCloseEnterAnimation
+                            : com.android.internal.R.styleable.WindowAnimation_activityCloseExitAnimation;
+                    break;
+                case WindowManagerPolicy.TRANSIT_TASK_OPEN:
+                    animAttr = enter
+                            ? com.android.internal.R.styleable.WindowAnimation_taskOpenEnterAnimation
+                            : com.android.internal.R.styleable.WindowAnimation_taskOpenExitAnimation;
+                    break;
+                case WindowManagerPolicy.TRANSIT_TASK_CLOSE:
+                    animAttr = enter
+                            ? com.android.internal.R.styleable.WindowAnimation_taskCloseEnterAnimation
+                            : com.android.internal.R.styleable.WindowAnimation_taskCloseExitAnimation;
+                    break;
+                case WindowManagerPolicy.TRANSIT_TASK_TO_FRONT:
+                    animAttr = enter
+                            ? com.android.internal.R.styleable.WindowAnimation_taskToFrontEnterAnimation
+                            : com.android.internal.R.styleable.WindowAnimation_taskToFrontExitAnimation;
+                    break;
+                case WindowManagerPolicy.TRANSIT_TASK_TO_BACK:
+                    animAttr = enter
+                            ? com.android.internal.R.styleable.WindowAnimation_taskToBackEnterAnimation
+                            : com.android.internal.R.styleable.WindowAnimation_taskToBackExitAnimation;
+                    break;
+                case WindowManagerPolicy.TRANSIT_WALLPAPER_OPEN:
+                    animAttr = enter
+                            ? com.android.internal.R.styleable.WindowAnimation_wallpaperOpenEnterAnimation
+                            : com.android.internal.R.styleable.WindowAnimation_wallpaperOpenExitAnimation;
+                    break;
+                case WindowManagerPolicy.TRANSIT_WALLPAPER_CLOSE:
+                    animAttr = enter
+                            ? com.android.internal.R.styleable.WindowAnimation_wallpaperCloseEnterAnimation
+                            : com.android.internal.R.styleable.WindowAnimation_wallpaperCloseExitAnimation;
+                    break;
+                case WindowManagerPolicy.TRANSIT_WALLPAPER_INTRA_OPEN:
+                    animAttr = enter
+                            ? com.android.internal.R.styleable.WindowAnimation_wallpaperIntraOpenEnterAnimation
+                            : com.android.internal.R.styleable.WindowAnimation_wallpaperIntraOpenExitAnimation;
+                    break;
+                case WindowManagerPolicy.TRANSIT_WALLPAPER_INTRA_CLOSE:
+                    animAttr = enter
+                            ? com.android.internal.R.styleable.WindowAnimation_wallpaperIntraCloseEnterAnimation
+                            : com.android.internal.R.styleable.WindowAnimation_wallpaperIntraCloseExitAnimation;
+                    break;
+            }
+            a = animAttr != 0 ? loadAnimation(lp, animAttr) : null;
+            if (DEBUG_APP_TRANSITIONS || DEBUG_ANIM) Slog.v(TAG,
+                    "applyAnimation:"
+                    + " anim=" + a
+                    + " animAttr=0x" + Integer.toHexString(animAttr)
+                    + " transit=" + transit + " isEntrance=" + enter
+                    + " Callers=" + Debug.getCallers(3));
+        }
+        return a;
+    }
+
+    void postAnimationCallback() {
+        if (mNextAppTransitionCallback != null) {
+            mH.sendMessage(mH.obtainMessage(H.DO_ANIMATION_CALLBACK, mNextAppTransitionCallback));
+            mNextAppTransitionCallback = null;
+        }
+    }
+
+    void overridePendingAppTransition(String packageName, int enterAnim, int exitAnim,
+                                             IRemoteCallback startedCallback) {
+        if (isTransitionSet()) {
+            mNextAppTransitionType = ActivityOptions.ANIM_CUSTOM;
+            mNextAppTransitionPackage = packageName;
+            mNextAppTransitionThumbnail = null;
+            mNextAppTransitionEnter = enterAnim;
+            mNextAppTransitionExit = exitAnim;
+            postAnimationCallback();
+            mNextAppTransitionCallback = startedCallback;
+        } else {
+            postAnimationCallback();
+        }
+    }
+
+    void overridePendingAppTransitionScaleUp(int startX, int startY, int startWidth,
+                                                    int startHeight) {
+        if (isTransitionSet()) {
+            mNextAppTransitionType = ActivityOptions.ANIM_SCALE_UP;
+            mNextAppTransitionPackage = null;
+            mNextAppTransitionThumbnail = null;
+            mNextAppTransitionStartX = startX;
+            mNextAppTransitionStartY = startY;
+            mNextAppTransitionStartWidth = startWidth;
+            mNextAppTransitionStartHeight = startHeight;
+            postAnimationCallback();
+            mNextAppTransitionCallback = null;
+        }
+    }
+
+    void overridePendingAppTransitionThumb(Bitmap srcThumb, int startX, int startY,
+                                           IRemoteCallback startedCallback, boolean scaleUp) {
+        if (isTransitionSet()) {
+            mNextAppTransitionType = scaleUp ? ActivityOptions.ANIM_THUMBNAIL_SCALE_UP
+                    : ActivityOptions.ANIM_THUMBNAIL_SCALE_DOWN;
+            mNextAppTransitionPackage = null;
+            mNextAppTransitionThumbnail = srcThumb;
+            mNextAppTransitionScaleUp = scaleUp;
+            mNextAppTransitionStartX = startX;
+            mNextAppTransitionStartY = startY;
+            postAnimationCallback();
+            mNextAppTransitionCallback = startedCallback;
+        } else {
+            postAnimationCallback();
+        }
+    }
+
+    @Override
+    public String toString() {
+        return "mNextAppTransition=0x" + Integer.toHexString(mNextAppTransition);
+    }
+
+    @Override
+    public void dump(PrintWriter pw) {
+        pw.print(" " + this);
+        pw.print(" mAppTransitionReady="); pw.println(mAppTransitionReady);
+        pw.print("  mAppTransitionRunning="); pw.print(mAppTransitionRunning);
+        pw.print(" mAppTransitionTimeout="); pw.println(mAppTransitionTimeout);
+        if (mNextAppTransitionType != ActivityOptions.ANIM_NONE) {
+            pw.print("  mNextAppTransitionType="); pw.println(mNextAppTransitionType);
+        }
+        switch (mNextAppTransitionType) {
+            case ActivityOptions.ANIM_CUSTOM:
+                pw.print("  mNextAppTransitionPackage=");
+                        pw.println(mNextAppTransitionPackage);
+                pw.print("  mNextAppTransitionEnter=0x");
+                        pw.print(Integer.toHexString(mNextAppTransitionEnter));
+                        pw.print(" mNextAppTransitionExit=0x");
+                        pw.println(Integer.toHexString(mNextAppTransitionExit));
+                break;
+            case ActivityOptions.ANIM_SCALE_UP:
+                pw.print("  mNextAppTransitionStartX="); pw.print(mNextAppTransitionStartX);
+                        pw.print(" mNextAppTransitionStartY=");
+                        pw.println(mNextAppTransitionStartY);
+                pw.print("  mNextAppTransitionStartWidth=");
+                        pw.print(mNextAppTransitionStartWidth);
+                        pw.print(" mNextAppTransitionStartHeight=");
+                        pw.println(mNextAppTransitionStartHeight);
+                break;
+            case ActivityOptions.ANIM_THUMBNAIL_SCALE_UP:
+            case ActivityOptions.ANIM_THUMBNAIL_SCALE_DOWN:
+                pw.print("  mNextAppTransitionThumbnail=");
+                        pw.print(mNextAppTransitionThumbnail);
+                        pw.print(" mNextAppTransitionStartX=");
+                        pw.print(mNextAppTransitionStartX);
+                        pw.print(" mNextAppTransitionStartY=");
+                        pw.println(mNextAppTransitionStartY);
+                pw.print("  mNextAppTransitionScaleUp="); pw.println(mNextAppTransitionScaleUp);
+                break;
+        }
+        if (mNextAppTransitionCallback != null) {
+            pw.print("  mNextAppTransitionCallback=");
+            pw.println(mNextAppTransitionCallback);
+        }
+    }
+}