Merge "Re-enabling fade-in of header bar icons."
diff --git a/services/core/java/com/android/server/wm/AppWindowAnimator.java b/services/core/java/com/android/server/wm/AppWindowAnimator.java
index e046a77..fa5ee72 100644
--- a/services/core/java/com/android/server/wm/AppWindowAnimator.java
+++ b/services/core/java/com/android/server/wm/AppWindowAnimator.java
@@ -339,8 +339,7 @@
                 return false;
             }
 
-            if ((mAppToken.allDrawn || mAppToken.mAnimatingWithSavedSurface
-                    || animating || mAppToken.startingDisplayed)
+            if ((mAppToken.allDrawn || animating || mAppToken.startingDisplayed)
                     && animation != null) {
                 if (!animating) {
                     if (DEBUG_ANIM) Slog.v(TAG,
diff --git a/services/core/java/com/android/server/wm/AppWindowToken.java b/services/core/java/com/android/server/wm/AppWindowToken.java
index c0d34e8..6452fee 100644
--- a/services/core/java/com/android/server/wm/AppWindowToken.java
+++ b/services/core/java/com/android/server/wm/AppWindowToken.java
@@ -299,10 +299,10 @@
         }
     }
 
-    void markSurfacesExiting() {
+    void setWindowsExiting(boolean exiting) {
         for (int i = allAppWindows.size() - 1; i >= 0; i--) {
             WindowState win = allAppWindows.get(i);
-            win.mExiting = true;
+            win.mExiting = exiting;
         }
     }
 
@@ -312,11 +312,11 @@
      * @return true if the surfaces should be saved, false otherwise.
      */
     boolean shouldSaveSurface() {
-        // We want to save surface if the app's windows are "allDrawn", or if we're
-        // currently animating with save surfaces. (If the app didn't even finish
-        // drawing when the user exits, but we have a saved surface from last time,
-        // we still want to keep that surface.)
-        return allDrawn || mAnimatingWithSavedSurface;
+        // We want to save surface if the app's windows are "allDrawn".
+        // (If we started entering animation early with saved surfaces, allDrawn
+        // should have been restored to true. So we'll save again in that case
+        // even if app didn't actually finish drawing.)
+        return allDrawn;
     }
 
     boolean hasSavedSurface() {
@@ -334,13 +334,26 @@
             return;
         }
         mAnimatingWithSavedSurface = true;
+
+        // Check if we have enough drawn windows to mark allDrawn= true.
+        int numInteresting = 0;
+        int numDrawn = 0;
         for (int i = windows.size() - 1; i >= 0; i--) {
-            WindowState ws = windows.get(i);
-            ws.restoreSavedSurface();
+            WindowState w = windows.get(i);
+            w.restoreSavedSurface();
+            if (w != startingWindow && !w.mAppDied
+                    && (!mAppAnimator.freezingScreen || !w.mAppFreezing)) {
+                numInteresting++;
+                if (w.isDrawnLw()) {
+                    numDrawn++;
+                }
+            }
         }
-        // Mark the app allDrawn since it must be allDrawn at the time
-        // it was first saved.
-        allDrawn = true;
+
+        allDrawn |= (numInteresting == numDrawn);
+
+        if (DEBUG_APP_TRANSITIONS || DEBUG_ANIM) Slog.d(TAG,
+                "restoreSavedSurfaces: " + appWindowToken + " allDrawn=" + allDrawn);
     }
 
     void destroySavedSurfaces() {
@@ -348,6 +361,7 @@
             WindowState win = windows.get(i);
             win.destroySavedSurface();
         }
+        mAnimatingWithSavedSurface = false;
     }
 
     @Override
diff --git a/services/core/java/com/android/server/wm/WindowAnimator.java b/services/core/java/com/android/server/wm/WindowAnimator.java
index 722c3b4..8d2fb9b 100644
--- a/services/core/java/com/android/server/wm/WindowAnimator.java
+++ b/services/core/java/com/android/server/wm/WindowAnimator.java
@@ -428,7 +428,7 @@
 
             final AppWindowToken atoken = win.mAppToken;
             if (winAnimator.mDrawState == WindowStateAnimator.READY_TO_SHOW) {
-                if (atoken == null || atoken.allDrawn || atoken.mAnimatingWithSavedSurface) {
+                if (atoken == null || atoken.allDrawn) {
                     if (winAnimator.performShowLocked()) {
                         setPendingLayoutChanges(displayId,
                                 WindowManagerPolicy.FINISH_LAYOUT_REDO_ANIM);
diff --git a/services/core/java/com/android/server/wm/WindowManagerService.java b/services/core/java/com/android/server/wm/WindowManagerService.java
index 849fc33..c14e32e 100644
--- a/services/core/java/com/android/server/wm/WindowManagerService.java
+++ b/services/core/java/com/android/server/wm/WindowManagerService.java
@@ -2691,7 +2691,17 @@
             } else {
                 winAnimator.mEnterAnimationPending = false;
                 winAnimator.mEnteringAnimation = false;
-                if (winAnimator.hasSurface() && !win.mExiting) {
+                final boolean usingSavedSurfaceBeforeVisible =
+                        oldVisibility != View.VISIBLE && win.isAnimatingWithSavedSurface();
+                if (DEBUG_APP_TRANSITIONS || DEBUG_ANIM) {
+                    if (winAnimator.hasSurface() && !win.mExiting
+                            && usingSavedSurfaceBeforeVisible) {
+                        Slog.d(TAG, "Ignoring layout to invisible when using saved surface " + win);
+                    }
+                }
+
+                if (winAnimator.hasSurface() && !win.mExiting
+                        && !usingSavedSurfaceBeforeVisible) {
                     if (DEBUG_VISIBILITY) Slog.i(TAG_WM, "Relayout invis " + win
                             + ": mExiting=" + win.mExiting);
                     // If we are not currently running the exit animation, we
@@ -4219,6 +4229,7 @@
                 }
                 wtoken.inPendingTransaction = true;
                 if (visible) {
+                    wtoken.setWindowsExiting(false);
                     mOpeningApps.add(wtoken);
                     wtoken.startingMoved = false;
                     wtoken.mEnteringAnimation = true;
@@ -4243,7 +4254,7 @@
                         }
                     }
                 } else {
-                    wtoken.markSurfacesExiting();
+                    wtoken.setWindowsExiting(true);
                     mClosingApps.add(wtoken);
                     wtoken.mEnteringAnimation = false;
                 }
diff --git a/services/core/java/com/android/server/wm/WindowState.java b/services/core/java/com/android/server/wm/WindowState.java
index 10a2a6c..4a9b356 100644
--- a/services/core/java/com/android/server/wm/WindowState.java
+++ b/services/core/java/com/android/server/wm/WindowState.java
@@ -1447,8 +1447,8 @@
         }
         for (int i = mAppToken.allAppWindows.size() - 1; i >= 0; i--) {
             final WindowState win = mAppToken.allAppWindows.get(i);
-            if (DEBUG_ADD_REMOVE) Slog.d(TAG, "Removing replaced window: " + win);
             if (win.mWillReplaceWindow && win.mReplacingWindow == this) {
+                if (DEBUG_ADD_REMOVE) Slog.d(TAG, "Removing replaced window: " + win);
                 win.mWillReplaceWindow = false;
                 win.mAnimateReplacingWindow = false;
                 win.mReplacingRemoveRequested = false;
@@ -2190,6 +2190,8 @@
             pw.print(prefix); pw.print("mRootToken="); pw.println(mRootToken);
             if (mAppToken != null) {
                 pw.print(prefix); pw.print("mAppToken="); pw.print(mAppToken);
+                pw.print(" isAnimatingWithSavedSurface()=");
+                pw.print(isAnimatingWithSavedSurface());
                 pw.print(" mAppDied=");pw.println(mAppDied);
             }
             if (mTargetAppToken != null) {
diff --git a/services/core/java/com/android/server/wm/WindowStateAnimator.java b/services/core/java/com/android/server/wm/WindowStateAnimator.java
index d21a3b4..e904ad5 100644
--- a/services/core/java/com/android/server/wm/WindowStateAnimator.java
+++ b/services/core/java/com/android/server/wm/WindowStateAnimator.java
@@ -272,11 +272,14 @@
     }
 
     void cancelExitAnimationForNextAnimationLocked() {
+        if (DEBUG_ANIM) Slog.d(TAG,
+                "cancelExitAnimationForNextAnimationLocked: " + mWin);
+
         if (mAnimation != null) {
             mAnimation.cancel();
             mAnimation = null;
             mLocalAnimating = false;
-            destroySurfaceLocked();
+            mWin.destroyOrSaveSurface();
         }
     }
 
@@ -498,10 +501,12 @@
             Slog.v(TAG, "Finishing drawing window " + mWin + ": mDrawState="
                     + drawStateToString());
         }
-        if (mWin.mAppToken != null) {
+        if (mWin.mAppToken != null && mWin.mAppToken.mAnimatingWithSavedSurface) {
             // App has drawn something to its windows, we're no longer animating with
             // the saved surfaces. If the user exits now, we only want to save again
             // if allDrawn is true.
+            if (DEBUG_ANIM) Slog.d(TAG,
+                    "finishDrawingLocked: mAnimatingWithSavedSurface=false " + mWin);
             mWin.mAppToken.mAnimatingWithSavedSurface = false;
         }
         if (mDrawState == DRAW_PENDING) {
@@ -534,8 +539,7 @@
         mDrawState = READY_TO_SHOW;
         boolean result = false;
         final AppWindowToken atoken = mWin.mAppToken;
-        if (atoken == null || atoken.allDrawn || atoken.mAnimatingWithSavedSurface ||
-                mWin.mAttrs.type == TYPE_APPLICATION_STARTING) {
+        if (atoken == null || atoken.allDrawn || mWin.mAttrs.type == TYPE_APPLICATION_STARTING) {
             result = performShowLocked();
         }
         if (mDestroyPreservedSurfaceUponRedraw) {
@@ -569,6 +573,8 @@
         final WindowState w = mWin;
         if (w.hasSavedSurface()) {
             Slog.i(TAG, "***** createSurface: " + this + ": called when we had a saved surface");
+            w.restoreSavedSurface();
+            return mSurfaceController;
         }
 
         if (mSurfaceController == null) {
diff --git a/services/core/java/com/android/server/wm/WindowSurfacePlacer.java b/services/core/java/com/android/server/wm/WindowSurfacePlacer.java
index 761d6e9..d1d4721 100644
--- a/services/core/java/com/android/server/wm/WindowSurfacePlacer.java
+++ b/services/core/java/com/android/server/wm/WindowSurfacePlacer.java
@@ -774,8 +774,9 @@
                                         + " a=" + winAnimator.mAnimating);
                             }
                         }
-                        if (w != atoken.startingWindow && !w.mAppDied) {
-                            if (!atoken.mAppAnimator.freezingScreen || !w.mAppFreezing) {
+                        if (w != atoken.startingWindow) {
+                            if (!w.mAppDied &&
+                                    (!atoken.mAppAnimator.freezingScreen || !w.mAppFreezing)) {
                                 atoken.numInterestingWindows++;
                                 if (w.isDrawnLw()) {
                                     atoken.numDrawnWindows++;
@@ -1156,8 +1157,6 @@
             }
             wtoken.inPendingTransaction = false;
 
-            wtoken.restoreSavedSurfaces();
-
             if (!mService.setTokenVisibilityLocked(
                     wtoken, animLp, true, transit, false, voiceInteraction)){
                 // This token isn't going to be animating. Add it to the list of tokens to
@@ -1277,9 +1276,8 @@
                         + wtoken.startingDisplayed + " startingMoved="
                         + wtoken.startingMoved);
 
-                if (wtoken.hasSavedSurface() || wtoken.mAnimatingWithSavedSurface) {
-                    continue;
-                }
+                wtoken.restoreSavedSurfaces();
+
                 if (!wtoken.allDrawn && !wtoken.startingDisplayed && !wtoken.startingMoved) {
                     return false;
                 }