Merge "Wait for visible wallpaper drawn before starting app transitions"

1 files changed, 52 insertions, 0 deletions

diff --git a/services/core/java/com/android/server/wm/WindowManagerService.java b/services/core/java/com/android/server/wm/WindowManagerService.java
index 4dd4e1e0d825..a25a84c091ea 100644
--- a/services/core/java/com/android/server/wm/WindowManagerService.java
+++ b/services/core/java/com/android/server/wm/WindowManagerService.java
@@ -613,6 +613,13 @@ public class WindowManagerService extends IWindowManager.Stub
     static final long WALLPAPER_TIMEOUT_RECOVERY = 10000;
     boolean mAnimateWallpaperWithTarget;
 
+    // We give a wallpaper up to 1000ms to finish drawing before playing app transitions.
+    static final long WALLPAPER_DRAW_PENDING_TIMEOUT_DURATION = 1000;
+    static final int WALLPAPER_DRAW_NORMAL = 0;
+    static final int WALLPAPER_DRAW_PENDING = 1;
+    static final int WALLPAPER_DRAW_TIMEOUT = 2;
+    int mWallpaperDrawState = WALLPAPER_DRAW_NORMAL;
+
     AppWindowToken mFocusedApp = null;
 
     PowerManager mPowerManager;
@@ -7644,6 +7651,7 @@ public class WindowManagerService extends IWindowManager.Stub
 
         public static final int CHECK_IF_BOOT_ANIMATION_FINISHED = 37;
         public static final int RESET_ANR_MESSAGE = 38;
+        public static final int WALLPAPER_DRAW_PENDING_TIMEOUT = 39;
 
         @Override
         public void handleMessage(Message msg) {
@@ -8160,6 +8168,17 @@ public class WindowManagerService extends IWindowManager.Stub
                     }
                 }
                 break;
+                case WALLPAPER_DRAW_PENDING_TIMEOUT: {
+                    synchronized (mWindowMap) {
+                        if (mWallpaperDrawState == WALLPAPER_DRAW_PENDING) {
+                            mWallpaperDrawState = WALLPAPER_DRAW_TIMEOUT;
+                            if (DEBUG_APP_TRANSITIONS || DEBUG_WALLPAPER) Slog.v(TAG,
+                                    "*** WALLPAPER DRAW TIMEOUT");
+                            performLayoutAndPlaceSurfacesLocked();
+                        }
+                    }
+                }
+                break;
             }
             if (DEBUG_WINDOW_TRACE) {
                 Slog.v(TAG, "handleMessage: exit");
@@ -9066,6 +9085,39 @@ public class WindowManagerService extends IWindowManager.Stub
                     goodToGo = false;
                 }
             }
+            if (goodToGo && isWallpaperVisible(mWallpaperTarget)) {
+                boolean wallpaperGoodToGo = true;
+                for (int curTokenIndex = mWallpaperTokens.size() - 1;
+                        curTokenIndex >= 0 && wallpaperGoodToGo; curTokenIndex--) {
+                    WindowToken token = mWallpaperTokens.get(curTokenIndex);
+                    for (int curWallpaperIndex = token.windows.size() - 1; curWallpaperIndex >= 0;
+                            curWallpaperIndex--) {
+                        WindowState wallpaper = token.windows.get(curWallpaperIndex);
+                        if (wallpaper.mWallpaperVisible && !wallpaper.isDrawnLw()) {
+                            // We've told this wallpaper to be visible, but it is not drawn yet
+                            wallpaperGoodToGo = false;
+                            if (mWallpaperDrawState != WALLPAPER_DRAW_TIMEOUT) {
+                                // wait for this wallpaper until it is drawn or timeout
+                                goodToGo = false;
+                            }
+                            if (mWallpaperDrawState == WALLPAPER_DRAW_NORMAL) {
+                                mWallpaperDrawState = WALLPAPER_DRAW_PENDING;
+                                mH.removeMessages(H.WALLPAPER_DRAW_PENDING_TIMEOUT);
+                                mH.sendEmptyMessageDelayed(H.WALLPAPER_DRAW_PENDING_TIMEOUT,
+                                        WALLPAPER_DRAW_PENDING_TIMEOUT_DURATION);
+                            }
+                            if (DEBUG_APP_TRANSITIONS || DEBUG_WALLPAPER) Slog.v(TAG,
+                                    "Wallpaper should be visible but has not been drawn yet. " +
+                                    "mWallpaperDrawState=" + mWallpaperDrawState);
+                            break;
+                        }
+                    }
+                }
+                if (wallpaperGoodToGo) {
+                    mWallpaperDrawState = WALLPAPER_DRAW_NORMAL;
+                    mH.removeMessages(H.WALLPAPER_DRAW_PENDING_TIMEOUT);
+                }
+            }
         }
         if (goodToGo) {
             if (DEBUG_APP_TRANSITIONS) Slog.v(TAG, "**** GOOD TO GO");