Revert^2 "Refresh layout parameter for bounds change from relayout"
The relayout method also assumes the client can get the latest
configuration. So if the client only relies on IWindow#resized
to compute its layout parameter, there may be a race that
resized gets config 1, and then even if relayout gets config 2,
the window still uses old layout parameter.
So this change simulates similar behavior as ViewRootImpl did:
check the config changes both from resized and relayout.
Also optimize a case if resized is called many times in a short
time from server side, or the ui thread is not able to consume
the events in time, then only the last event will be handled.
So several relayout invocations for outdated intermediate states
can be reduced.
This reverts commit cc067ed3932634b70d6950eaf00e60d2d60e1bdf.
The unit test ImageWallpaperTest was failed because it
uses a mocked Context which didn't provide getResources().
Fix it by moving the config initialization from constructor
to attach(), so unit test won't hit it.
Bug: 264829202
Test: atest ImageWallpaperTest
Test: Hardcoded to return a wrong bound from IWindow#resized
to wallpaper, wallpaper can still show correct size.
Change-Id: I0b4a480c6e85133f2d0d30042603009cc94db9c0
diff --git a/core/java/android/service/wallpaper/WallpaperService.java b/core/java/android/service/wallpaper/WallpaperService.java
index 77bbeb5..9d3d70d 100644
--- a/core/java/android/service/wallpaper/WallpaperService.java
+++ b/core/java/android/service/wallpaper/WallpaperService.java
@@ -112,6 +112,7 @@
import java.util.Set;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.concurrent.atomic.AtomicInteger;
import java.util.function.Supplier;
/**
@@ -431,6 +432,7 @@
Message msg = mCaller.obtainMessageIO(MSG_WINDOW_RESIZED,
reportDraw ? 1 : 0,
mergedConfiguration);
+ mIWallpaperEngine.mPendingResizeCount.incrementAndGet();
mCaller.sendMessage(msg);
}
@@ -1051,6 +1053,10 @@
out.print(prefix); out.print("mZoom="); out.println(mZoom);
out.print(prefix); out.print("mPreviewSurfacePosition=");
out.println(mPreviewSurfacePosition);
+ final int pendingCount = mIWallpaperEngine.mPendingResizeCount.get();
+ if (pendingCount != 0) {
+ out.print(prefix); out.print("mPendingResizeCount="); out.println(pendingCount);
+ }
synchronized (mLock) {
out.print(prefix); out.print("mPendingXOffset="); out.print(mPendingXOffset);
out.print(" mPendingXOffset="); out.println(mPendingXOffset);
@@ -1113,10 +1119,6 @@
}
}
- private void updateConfiguration(MergedConfiguration mergedConfiguration) {
- mMergedConfiguration.setTo(mergedConfiguration);
- }
-
void updateSurface(boolean forceRelayout, boolean forceReport, boolean redrawNeeded) {
if (mDestroyed) {
Log.w(TAG, "Ignoring updateSurface due to destroyed");
@@ -1165,7 +1167,7 @@
| WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;
final Configuration config = mMergedConfiguration.getMergedConfiguration();
- final Rect maxBounds = config.windowConfiguration.getMaxBounds();
+ final Rect maxBounds = new Rect(config.windowConfiguration.getMaxBounds());
if (myWidth == ViewGroup.LayoutParams.MATCH_PARENT
&& myHeight == ViewGroup.LayoutParams.MATCH_PARENT) {
mLayout.width = myWidth;
@@ -1221,6 +1223,17 @@
final int relayoutResult = mSession.relayout(mWindow, mLayout, mWidth, mHeight,
View.VISIBLE, 0, 0, 0, mWinFrames, mMergedConfiguration,
mSurfaceControl, mInsetsState, mTempControls, mSyncSeqIdBundle);
+ final Rect outMaxBounds = mMergedConfiguration.getMergedConfiguration()
+ .windowConfiguration.getMaxBounds();
+ if (!outMaxBounds.equals(maxBounds)) {
+ Log.i(TAG, "Retry updateSurface because bounds changed from relayout: "
+ + maxBounds + " -> " + outMaxBounds);
+ mSurfaceHolder.mSurfaceLock.unlock();
+ mDrawingAllowed = false;
+ mCaller.sendMessage(mCaller.obtainMessageI(MSG_WINDOW_RESIZED,
+ redrawNeeded ? 1 : 0));
+ return;
+ }
final int transformHint = SurfaceControl.rotationToBufferTransform(
(mDisplay.getInstallOrientation() + mDisplay.getRotation()) % 4);
@@ -1488,6 +1501,8 @@
mWallpaperDimAmount = mDefaultDimAmount;
mPreviousWallpaperDimAmount = mWallpaperDimAmount;
mDisplayState = mDisplay.getCommittedState();
+ mMergedConfiguration.setOverrideConfiguration(
+ mDisplayContext.getResources().getConfiguration());
if (DEBUG) Log.v(TAG, "onCreate(): " + this);
Trace.beginSection("WPMS.Engine.onCreate");
@@ -2324,6 +2339,8 @@
final IBinder mWindowToken;
final int mWindowType;
final boolean mIsPreview;
+ final AtomicInteger mPendingResizeCount = new AtomicInteger();
+ boolean mReportDraw;
boolean mShownReported;
int mReqWidth;
int mReqHeight;
@@ -2579,11 +2596,7 @@
mEngine.doCommand(cmd);
} break;
case MSG_WINDOW_RESIZED: {
- final boolean reportDraw = message.arg1 != 0;
- mEngine.updateConfiguration(((MergedConfiguration) message.obj));
- mEngine.updateSurface(true, false, reportDraw);
- mEngine.doOffsetsChanged(true);
- mEngine.scaleAndCropScreenshot();
+ handleResized((MergedConfiguration) message.obj, message.arg1 != 0);
} break;
case MSG_WINDOW_MOVED: {
// Do nothing. What does it mean for a Wallpaper to move?
@@ -2631,6 +2644,40 @@
Log.w(TAG, "Unknown message type " + message.what);
}
}
+
+ /**
+ * In general this performs relayout for IWindow#resized. If there are several pending
+ * (in the message queue) MSG_WINDOW_RESIZED from server side, only the last one will be
+ * handled (ignore intermediate states). Note that this procedure cannot be skipped if the
+ * configuration is not changed because this is also used to dispatch insets changes.
+ */
+ private void handleResized(MergedConfiguration config, boolean reportDraw) {
+ // The config can be null when retrying for a changed config from relayout, otherwise
+ // it is from IWindow#resized which always sends non-null config.
+ final int pendingCount = config != null ? mPendingResizeCount.decrementAndGet() : -1;
+ if (reportDraw) {
+ mReportDraw = true;
+ }
+ if (pendingCount > 0) {
+ if (DEBUG) {
+ Log.d(TAG, "Skip outdated resize, bounds="
+ + config.getMergedConfiguration().windowConfiguration.getMaxBounds()
+ + " pendingCount=" + pendingCount);
+ }
+ return;
+ }
+ if (config != null) {
+ if (DEBUG) {
+ Log.d(TAG, "Update config from resized, bounds="
+ + config.getMergedConfiguration().windowConfiguration.getMaxBounds());
+ }
+ mEngine.mMergedConfiguration.setTo(config);
+ }
+ mEngine.updateSurface(true /* forceRelayout */, false /* forceReport */, mReportDraw);
+ mReportDraw = false;
+ mEngine.doOffsetsChanged(true);
+ mEngine.scaleAndCropScreenshot();
+ }
}
/**
