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Ensure cleanup when interrupting scroll capture

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A batch of related cleanups and fixes:

 * Connects cancellation signals between the layers of scroll capture.

 * Handles cancellation on dismissal, ensuring clean shutdown of session.

 * Ensures any pending operation is cancelled on the client side and the
   connection is closed.

 * App side of connection handles a crash of SystemUI, ensure close()

 * ScrollCaptureController:
   Moves onCaptureResult to a background thread; it calls into binder.

 * Fixes accuracy and category of some log messages about dismissal
   gesture.

Test: atest ScrollCaptureConnectionTest ScrollCaptureControllerTest
Change-Id: I20014a4cb43e28fcb97f6980fb47af8c06deaca2
This commit is contained in:
Mark Renouf
2021-09-29 15:34:43 -04:00
parent 54fef7af80
commit 3d60f471e7
6 changed files with 210 additions and 100 deletions
Download Patch File Download Diff File Expand all files Collapse all files

56
core/java/android/view/ScrollCaptureConnection.java
View File

@@ -24,9 +24,9 @@ import android.annotation.UiThread;
import android.graphics.Point;
import android.graphics.Rect;
import android.os.CancellationSignal;
import android.os.IBinder;
import android.os.ICancellationSignal;
import android.os.RemoteException;
import android.os.Trace;
import android.util.CloseGuard;
import android.util.Log;
@@ -44,7 +44,8 @@ import java.util.function.Consumer;
*
* @hide
*/
public class ScrollCaptureConnection extends IScrollCaptureConnection.Stub {
public class ScrollCaptureConnection extends IScrollCaptureConnection.Stub implements
IBinder.DeathRecipient {
private static final String TAG = "ScrollCaptureConnection";
@@ -54,15 +55,13 @@ public class ScrollCaptureConnection extends IScrollCaptureConnection.Stub {
private final Executor mUiThread;
private final CloseGuard mCloseGuard = new CloseGuard();
private ScrollCaptureCallback mLocal;
private IScrollCaptureCallbacks mRemote;
private ScrollCaptureSession mSession;
private CancellationSignal mCancellation;
private volatile boolean mActive;
private volatile boolean mConnected;
/**
* Constructs a ScrollCaptureConnection.
@@ -87,13 +86,14 @@ public class ScrollCaptureConnection extends IScrollCaptureConnection.Stub {
@Override
public ICancellationSignal startCapture(@NonNull Surface surface,
@NonNull IScrollCaptureCallbacks remote) throws RemoteException {
mCloseGuard.open("close");
if (!surface.isValid()) {
throw new RemoteException(new IllegalArgumentException("surface must be valid"));
}
mRemote = requireNonNull(remote, "<callbacks> must non-null");
mRemote.asBinder().linkToDeath(this, 0);
mConnected = true;
ICancellationSignal cancellation = CancellationSignal.createTransport();
mCancellation = CancellationSignal.fromTransport(cancellation);
@@ -115,14 +115,14 @@ public class ScrollCaptureConnection extends IScrollCaptureConnection.Stub {
Log.w(TAG, "Shutting down due to error: ", e);
close();
}
mCancellation = null;
}
@BinderThread
@Override
public ICancellationSignal requestImage(Rect requestRect) throws RemoteException {
Trace.beginSection("requestImage");
checkActive();
cancelPendingAction();
ICancellationSignal cancellation = CancellationSignal.createTransport();
mCancellation = CancellationSignal.fromTransport(cancellation);
@@ -131,7 +131,6 @@ public class ScrollCaptureConnection extends IScrollCaptureConnection.Stub {
// -> UiThread
mUiThread.execute(() -> mLocal.onScrollCaptureImageRequest(
mSession, mCancellation, new Rect(requestRect), listener));
Trace.endSection();
return cancellation;
}
@@ -142,6 +141,8 @@ public class ScrollCaptureConnection extends IScrollCaptureConnection.Stub {
} catch (RemoteException e) {
Log.w(TAG, "Shutting down due to error: ", e);
close();
} finally {
mCancellation = null;
}
}
@@ -149,7 +150,7 @@ public class ScrollCaptureConnection extends IScrollCaptureConnection.Stub {
@Override
public ICancellationSignal endCapture() throws RemoteException {
checkActive();
cancelPendingAction();
ICancellationSignal cancellation = CancellationSignal.createTransport();
mCancellation = CancellationSignal.fromTransport(cancellation);
@@ -170,26 +171,32 @@ public class ScrollCaptureConnection extends IScrollCaptureConnection.Stub {
} catch (RemoteException e) {
Log.w(TAG, "Caught exception confirming capture end!", e);
} finally {
mCancellation = null;
close();
}
}
@Override
public void binderDied() {
Log.e(TAG, "Controlling process just died.");
close();
}
@BinderThread
@Override
public void close() {
if (mActive) {
if (mCancellation != null) {
Log.w(TAG, "close(): cancelling pending operation.");
mCancellation.cancel();
mCancellation = null;
}
Log.w(TAG, "close(): capture session still active! Ending now.");
// -> UiThread
cancelPendingAction();
final ScrollCaptureCallback callback = mLocal;
mUiThread.execute(() -> callback.onScrollCaptureEnd(() -> { /* ignore */ }));
mActive = false;
}
if (mRemote != null) {
mRemote.asBinder().unlinkToDeath(this, 0);
}
mActive = false;
mConnected = false;
mSession = null;
mRemote = null;
mLocal = null;
@@ -197,6 +204,19 @@ public class ScrollCaptureConnection extends IScrollCaptureConnection.Stub {
Reference.reachabilityFence(this);
}
private void cancelPendingAction() {
if (mCancellation != null) {
Log.w(TAG, "cancelling pending operation.");
mCancellation.cancel();
mCancellation = null;
}
}
@VisibleForTesting
public boolean isConnected() {
return mConnected;
}
@VisibleForTesting
public boolean isActive() {
return mActive;
@@ -236,7 +256,7 @@ public class ScrollCaptureConnection extends IScrollCaptureConnection.Stub {
protected SafeCallback(CancellationSignal signal, Executor executor, T value) {
mSignal = signal;
mValue = new AtomicReference<T>(value);
mValue = new AtomicReference<>(value);
mExecutor = executor;
}
@@ -257,7 +277,7 @@ public class ScrollCaptureConnection extends IScrollCaptureConnection.Stub {
static <T> Consumer<T> create(CancellationSignal signal, Executor executor,
Consumer<T> target) {
return new ConsumerCallback<T>(signal, executor, target);
return new ConsumerCallback<>(signal, executor, target);
}
}

54
core/tests/coretests/src/android/view/ScrollCaptureConnectionTest.java
View File

@@ -21,16 +21,19 @@ import static androidx.test.InstrumentationRegistry.getTargetContext;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyInt;
import static org.mockito.ArgumentMatchers.eq;
import static org.mockito.Mockito.reset;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.verifyNoMoreInteractions;
import static org.mockito.Mockito.when;
import android.graphics.Point;
import android.graphics.Rect;
import android.os.Binder;
import android.os.Handler;
import android.os.IBinder;
import android.os.ICancellationSignal;
import android.os.RemoteException;
import android.platform.test.annotations.Presubmit;
@@ -60,6 +63,7 @@ public class ScrollCaptureConnectionTest {
private ScrollCaptureTarget mTarget;
private ScrollCaptureConnection mConnection;
private IBinder mConnectionBinder = new Binder("ScrollCaptureConnection Test");
private Handler mHandler;
@@ -76,6 +80,7 @@ public class ScrollCaptureConnectionTest {
mHandler = new Handler(getTargetContext().getMainLooper());
when(mSurface.isValid()).thenReturn(true);
when(mView.getScrollCaptureHint()).thenReturn(View.SCROLL_CAPTURE_HINT_INCLUDE);
when(mRemote.asBinder()).thenReturn(mConnectionBinder);
mTarget = new ScrollCaptureTarget(mView, mLocalVisibleRect, mPositionInWindow, mCallback);
mTarget.setScrollBounds(mScrollBounds);
@@ -107,12 +112,13 @@ public class ScrollCaptureConnectionTest {
@Test
public void testStartCapture() throws Exception {
mConnection.startCapture(mSurface, mRemote);
assertTrue(mConnection.isConnected());
assertFalse(mConnection.isActive());
mCallback.completeStartRequest();
assertTrue(mConnection.isActive());
verify(mRemote, times(1)).onCaptureStarted();
verifyNoMoreInteractions(mRemote);
}
@Test
@@ -123,7 +129,7 @@ public class ScrollCaptureConnectionTest {
mCallback.completeStartRequest();
assertFalse(mConnection.isActive());
verifyNoMoreInteractions(mRemote);
verify(mRemote, never()).onCaptureStarted();
}
/** @see ScrollCaptureConnection#requestImage(Rect) */
@@ -131,42 +137,63 @@ public class ScrollCaptureConnectionTest {
public void testRequestImage() throws Exception {
mConnection.startCapture(mSurface, mRemote);
mCallback.completeStartRequest();
reset(mRemote);
mConnection.requestImage(new Rect(1, 2, 3, 4));
mCallback.completeImageRequest(new Rect(1, 2, 3, 4));
verify(mRemote, times(1))
.onImageRequestCompleted(eq(0), eq(new Rect(1, 2, 3, 4)));
verifyNoMoreInteractions(mRemote);
}
@Test
public void testRequestImage_cancellation() throws Exception {
mConnection.startCapture(mSurface, mRemote);
mCallback.completeStartRequest();
reset(mRemote);
ICancellationSignal signal = mConnection.requestImage(new Rect(1, 2, 3, 4));
signal.cancel();
mCallback.completeImageRequest(new Rect(1, 2, 3, 4));
verifyNoMoreInteractions(mRemote);
verify(mRemote, never()).onImageRequestCompleted(anyInt(), any(Rect.class));
}
/** @see ScrollCaptureConnection#endCapture() */
@Test
public void testEndCapture() throws Exception {
mConnection.startCapture(mSurface, mRemote);
assertTrue(mConnection.isConnected());
mCallback.completeStartRequest();
reset(mRemote);
assertTrue(mConnection.isActive());
mConnection.endCapture();
mCallback.completeEndRequest();
assertFalse(mConnection.isActive());
// And the reply is sent
verify(mRemote, times(1)).onCaptureEnded();
verifyNoMoreInteractions(mRemote);
assertFalse(mConnection.isConnected());
}
/** @see ScrollCaptureConnection#endCapture() */
@Test
public void testClose_withPendingOperation() throws Exception {
mConnection.startCapture(mSurface, mRemote);
mCallback.completeStartRequest();
mConnection.requestImage(new Rect(1, 2, 3, 4));
assertFalse(mCallback.getLastCancellationSignal().isCanceled());
mConnection.close();
// And the reply is sent
assertTrue(mCallback.onScrollCaptureEndCalled());
assertTrue(mCallback.getLastCancellationSignal().isCanceled());
assertFalse(mConnection.isActive());
assertFalse(mConnection.isConnected());
verify(mRemote, never()).onCaptureEnded();
verify(mRemote, never()).onImageRequestCompleted(anyInt(), any(Rect.class));
}
/** @see ScrollCaptureConnection#endCapture() */
@@ -174,20 +201,19 @@ public class ScrollCaptureConnectionTest {
public void testEndCapture_cancellation() throws Exception {
mConnection.startCapture(mSurface, mRemote);
mCallback.completeStartRequest();
reset(mRemote);
ICancellationSignal signal = mConnection.endCapture();
signal.cancel();
mCallback.completeEndRequest();
verifyNoMoreInteractions(mRemote);
verify(mRemote, never()).onCaptureEnded();
}
@Test
public void testClose() {
mConnection.close();
assertFalse(mConnection.isActive());
verifyNoMoreInteractions(mRemote);
assertFalse(mConnection.isConnected());
}
@Test
@@ -196,9 +222,11 @@ public class ScrollCaptureConnectionTest {
mCallback.completeStartRequest();
assertTrue(mConnection.isActive());
assertTrue(mConnection.isConnected());
mConnection.close();
mCallback.completeEndRequest();
assertFalse(mConnection.isActive());
assertFalse(mConnection.isConnected());
}
}

25
core/tests/coretests/src/android/view/TestScrollCaptureCallback.java
View File

@@ -31,10 +31,13 @@ class TestScrollCaptureCallback implements ScrollCaptureCallback {
private Consumer<Rect> mImageOnComplete;
private Runnable mOnEndReady;
private volatile int mModCount;
private boolean mOnScrollCaptureEndCalled;
private CancellationSignal mLastCancellationSignal;
@Override
public void onScrollCaptureSearch(@NonNull CancellationSignal signal,
@NonNull Consumer<Rect> onReady) {
mLastCancellationSignal = signal;
mSearchConsumer = onReady;
mModCount++;
}
@@ -42,6 +45,7 @@ class TestScrollCaptureCallback implements ScrollCaptureCallback {
@Override
public void onScrollCaptureStart(@NonNull ScrollCaptureSession session,
@NonNull CancellationSignal signal, @NonNull Runnable onReady) {
mLastCancellationSignal = signal;
mStartOnReady = onReady;
mModCount++;
}
@@ -50,6 +54,7 @@ class TestScrollCaptureCallback implements ScrollCaptureCallback {
public void onScrollCaptureImageRequest(@NonNull ScrollCaptureSession session,
@NonNull CancellationSignal signal, @NonNull Rect captureArea,
@NonNull Consumer<Rect> onComplete) {
mLastCancellationSignal = signal;
mImageOnComplete = onComplete;
mModCount++;
}
@@ -57,8 +62,12 @@ class TestScrollCaptureCallback implements ScrollCaptureCallback {
@Override
public void onScrollCaptureEnd(@NonNull Runnable onReady) {
mOnEndReady = onReady;
mOnScrollCaptureEndCalled = true;
}
public boolean onScrollCaptureEndCalled() {
return mOnScrollCaptureEndCalled;
}
void completeSearchRequest(Rect scrollBounds) {
assertNotNull("Did not receive search request", mSearchConsumer);
mSearchConsumer.accept(scrollBounds);
@@ -71,16 +80,26 @@ class TestScrollCaptureCallback implements ScrollCaptureCallback {
void completeStartRequest() {
assertNotNull("Did not receive start request", mStartOnReady);
mStartOnReady.run();
if (mLastCancellationSignal != null && !mLastCancellationSignal.isCanceled()) {
mStartOnReady.run();
}
}
void completeImageRequest(Rect captured) {
assertNotNull("Did not receive image request", mImageOnComplete);
mImageOnComplete.accept(captured);
if (mLastCancellationSignal != null && !mLastCancellationSignal.isCanceled()) {
mImageOnComplete.accept(captured);
}
}
void completeEndRequest() {
assertNotNull("Did not receive end request", mOnEndReady);
mOnEndReady.run();
if (mLastCancellationSignal != null && !mLastCancellationSignal.isCanceled()) {
mOnEndReady.run();
}
}
public CancellationSignal getLastCancellationSignal() {
return mLastCancellationSignal;
}
}

130
packages/SystemUI/src/com/android/systemui/screenshot/ScreenshotController.java
View File

@@ -422,11 +422,6 @@ public class ScreenshotController {
} else {
mScreenshotView.animateDismissal();
}
if (mLastScrollCaptureResponse != null) {
mLastScrollCaptureResponse.close();
mLastScrollCaptureResponse = null;
}
}
boolean isPendingSharedTransition() {
@@ -456,6 +451,9 @@ public class ScreenshotController {
mScreenshotView.init(mUiEventLogger, new ScreenshotView.ScreenshotViewCallback() {
@Override
public void onUserInteraction() {
if (DEBUG_INPUT) {
Log.d(TAG, "onUserInteraction");
}
resetTimeout();
}
@@ -670,52 +668,7 @@ public class ScreenshotController {
mScreenshotView.prepareScrollingTransition(response, mScreenBitmap, newScreenshot,
mScreenshotTakenInPortrait);
// delay starting scroll capture to make sure the scrim is up before the app moves
mScreenshotView.post(() -> {
// Clear the reference to prevent close() in dismissScreenshot
mLastScrollCaptureResponse = null;
final ListenableFuture<ScrollCaptureController.LongScreenshot> future =
mScrollCaptureController.run(response);
future.addListener(() -> {
ScrollCaptureController.LongScreenshot longScreenshot;
try {
longScreenshot = future.get();
} catch (CancellationException
| InterruptedException
| ExecutionException e) {
Log.e(TAG, "Exception", e);
mScreenshotView.restoreNonScrollingUi();
return;
}
if (longScreenshot.getHeight() == 0) {
mScreenshotView.restoreNonScrollingUi();
return;
}
mLongScreenshotHolder.setLongScreenshot(longScreenshot);
mLongScreenshotHolder.setTransitionDestinationCallback(
(transitionDestination, onTransitionEnd) ->
mScreenshotView.startLongScreenshotTransition(
transitionDestination, onTransitionEnd,
longScreenshot));
final Intent intent = new Intent(mContext, LongScreenshotActivity.class);
intent.setFlags(
Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP);
mContext.startActivity(intent,
ActivityOptions.makeCustomAnimation(mContext, 0, 0).toBundle());
RemoteAnimationAdapter runner = new RemoteAnimationAdapter(
SCREENSHOT_REMOTE_RUNNER, 0, 0);
try {
WindowManagerGlobal.getWindowManagerService()
.overridePendingAppTransitionRemote(runner, DEFAULT_DISPLAY);
} catch (Exception e) {
Log.e(TAG, "Error overriding screenshot app transition", e);
}
}, mMainExecutor);
});
mScreenshotView.post(() -> runBatchScrollCapture(response));
});
} catch (CancellationException e) {
// Ignore
@@ -723,6 +676,57 @@ public class ScreenshotController {
Log.e(TAG, "requestScrollCapture failed", e);
}
}
ListenableFuture<ScrollCaptureController.LongScreenshot> mLongScreenshotFuture;
private void runBatchScrollCapture(ScrollCaptureResponse response) {
// Clear the reference to prevent close() in dismissScreenshot
mLastScrollCaptureResponse = null;
if (mLongScreenshotFuture != null) {
mLongScreenshotFuture.cancel(true);
}
mLongScreenshotFuture = mScrollCaptureController.run(response);
mLongScreenshotFuture.addListener(() -> {
ScrollCaptureController.LongScreenshot longScreenshot;
try {
longScreenshot = mLongScreenshotFuture.get();
} catch (CancellationException e) {
Log.e(TAG, "Long screenshot cancelled");
return;
} catch (InterruptedException | ExecutionException e) {
Log.e(TAG, "Exception", e);
mScreenshotView.restoreNonScrollingUi();
return;
}
if (longScreenshot.getHeight() == 0) {
mScreenshotView.restoreNonScrollingUi();
return;
}
mLongScreenshotHolder.setLongScreenshot(longScreenshot);
mLongScreenshotHolder.setTransitionDestinationCallback(
(transitionDestination, onTransitionEnd) ->
mScreenshotView.startLongScreenshotTransition(
transitionDestination, onTransitionEnd,
longScreenshot));
final Intent intent = new Intent(mContext, LongScreenshotActivity.class);
intent.setFlags(
Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP);
mContext.startActivity(intent,
ActivityOptions.makeCustomAnimation(mContext, 0, 0).toBundle());
RemoteAnimationAdapter runner = new RemoteAnimationAdapter(
SCREENSHOT_REMOTE_RUNNER, 0, 0);
try {
WindowManagerGlobal.getWindowManagerService()
.overridePendingAppTransitionRemote(runner, DEFAULT_DISPLAY);
} catch (Exception e) {
Log.e(TAG, "Error overriding screenshot app transition", e);
}
}, mMainExecutor);
}
private void withWindowAttached(Runnable action) {
View decorView = mWindow.getDecorView();
@@ -824,16 +828,27 @@ public class ScreenshotController {
/** Reset screenshot view and then call onCompleteRunnable */
private void finishDismiss() {
if (DEBUG_UI) {
if (DEBUG_DISMISS) {
Log.d(TAG, "finishDismiss");
}
cancelTimeout();
removeWindow();
mScreenshotView.reset();
if (mLastScrollCaptureRequest != null) {
mLastScrollCaptureRequest.cancel(true);
mLastScrollCaptureRequest = null;
}
if (mLastScrollCaptureResponse != null) {
mLastScrollCaptureResponse.close();
mLastScrollCaptureResponse = null;
}
if (mLongScreenshotFuture != null) {
mLongScreenshotFuture.cancel(true);
}
if (mCurrentRequestCallback != null) {
mCurrentRequestCallback.onFinish();
mCurrentRequestCallback = null;
}
mScreenshotView.reset();
removeWindow();
cancelTimeout();
}
/**
@@ -861,6 +876,9 @@ public class ScreenshotController {
}
private void cancelTimeout() {
if (DEBUG_DISMISS) {
Log.d(TAG, "cancel timeout");
}
mScreenshotHandler.removeMessages(MESSAGE_CORNER_TIMEOUT);
}
@@ -876,7 +894,7 @@ public class ScreenshotController {
mScreenshotHandler.sendMessageDelayed(
mScreenshotHandler.obtainMessage(MESSAGE_CORNER_TIMEOUT),
timeoutMs);
if (DEBUG_UI) {
if (DEBUG_DISMISS) {
Log.d(TAG, "dismiss timeout: " + timeoutMs + " ms");
}

12
packages/SystemUI/src/com/android/systemui/screenshot/ScreenshotView.java
View File

@@ -1117,9 +1117,11 @@ public class ScreenshotView extends FrameLayout implements
mPreviousX = mStartX;
return true;
} else if (event.getActionMasked() == MotionEvent.ACTION_UP) {
if (isPastDismissThreshold()
&& (mDismissAnimation == null || !mDismissAnimation.isRunning())) {
if (DEBUG_INPUT) {
if (mDismissAnimation != null && mDismissAnimation.isRunning()) {
return true;
}
if (isPastDismissThreshold()) {
if (DEBUG_DISMISS) {
Log.d(TAG, "dismiss triggered via swipe gesture");
}
mUiEventLogger.log(ScreenshotEvent.SCREENSHOT_SWIPE_DISMISSED);
@@ -1129,9 +1131,7 @@ public class ScreenshotView extends FrameLayout implements
if (DEBUG_DISMISS) {
Log.d(TAG, "swipe gesture abandoned");
}
if ((mDismissAnimation == null || !mDismissAnimation.isRunning())) {
createSwipeReturnAnimation().start();
}
createSwipeReturnAnimation().start();
}
return true;
}

33
packages/SystemUI/src/com/android/systemui/screenshot/ScrollCaptureController.java
View File

@@ -35,6 +35,7 @@ import com.android.systemui.screenshot.ScrollCaptureClient.Session;
import com.google.common.util.concurrent.ListenableFuture;
import java.util.concurrent.CancellationException;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Executor;
@@ -72,6 +73,7 @@ public class ScrollCaptureController {
private ListenableFuture<CaptureResult> mTileFuture;
private ListenableFuture<Void> mEndFuture;
private String mWindowOwner;
private volatile boolean mCancelled;
static class LongScreenshot {
private final ImageTileSet mImageTileSet;
@@ -159,9 +161,11 @@ public class ScrollCaptureController {
* @return a future ImageTile set containing the result
*/
ListenableFuture<LongScreenshot> run(ScrollCaptureResponse response) {
mCancelled = false;
return CallbackToFutureAdapter.getFuture(completer -> {
mCaptureCompleter = completer;
mWindowOwner = response.getPackageName();
mCaptureCompleter.addCancellationListener(this::onCancelled, mBgExecutor);
mBgExecutor.execute(() -> {
float maxPages = Settings.Secure.getFloat(mContext.getContentResolver(),
SETTING_KEY_MAX_PAGES, MAX_PAGES_DEFAULT);
@@ -172,6 +176,24 @@ public class ScrollCaptureController {
});
}
/**
* The ListenableFuture for the long screenshot was cancelled. Be sure to cancel all downstream
* futures that might be pending.
*/
private void onCancelled() {
mCancelled = true;
if (mSessionFuture != null) {
mSessionFuture.cancel(true);
}
if (mTileFuture != null) {
mTileFuture.cancel(true);
}
if (mSession != null) {
mSession.end();
}
mEventLogger.log(ScreenshotEvent.SCREENSHOT_LONG_SCREENSHOT_FAILURE, 0, mWindowOwner);
}
private void onStartComplete() {
try {
mSession = mSessionFuture.get();
@@ -192,18 +214,21 @@ public class ScrollCaptureController {
if (LogConfig.DEBUG_SCROLL) {
Log.d(TAG, "requestNextTile: " + topPx);
}
if (mCancelled) {
Log.d(TAG, "requestNextTile: CANCELLED");
return;
}
mTileFuture = mSession.requestTile(topPx);
mTileFuture.addListener(() -> {
try {
if (LogConfig.DEBUG_SCROLL) {
Log.d(TAG, "onCaptureResult");
}
onCaptureResult(mTileFuture.get());
} catch (CancellationException e) {
Log.e(TAG, "requestTile cancelled");
} catch (InterruptedException | ExecutionException e) {
Log.e(TAG, "requestTile failed!", e);
mCaptureCompleter.setException(e);
}
}, mContext.getMainExecutor());
}, mBgExecutor);
}
private void onCaptureResult(CaptureResult result) {