Merge "Perform magnification viewport drawing outside of WM global lock." into... (115da928) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/wm/AccessibilityController.java

+37 −29

Original line number	Original line	Diff line number	Diff line
	@@ -1280,46 +1280,54 @@ final class AccessibilityController {
	}		}

	void drawIfNeeded(SurfaceControl.Transaction t) {		void drawIfNeeded(SurfaceControl.Transaction t) {
			// Drawing variables (alpha, dirty rect, and bounds) access is synchronized
			// using WindowManagerGlobalLock. Grab copies of these values before
			// drawing on the canvas so that drawing can be performed outside of the lock.
			int alpha;
			Rect drawingRect = null;
			Region drawingBounds = null;
	synchronized (mService.mGlobalLock) {		synchronized (mService.mGlobalLock) {
	if (!mInvalidated) {		if (!mInvalidated) {
	return;		return;
	}		}
	mInvalidated = false;		mInvalidated = false;
	if (mAlpha > 0) {
	Canvas canvas = null;		alpha = mAlpha;
	try {		if (alpha > 0) {
			drawingBounds = new Region(mBounds);
	// Empty dirty rectangle means unspecified.		// Empty dirty rectangle means unspecified.
	if (mDirtyRect.isEmpty()) {		if (mDirtyRect.isEmpty()) {
	mBounds.getBounds(mDirtyRect);		mBounds.getBounds(mDirtyRect);
	}		}
	mDirtyRect.inset(-mHalfBorderWidth, -mHalfBorderWidth);		mDirtyRect.inset(-mHalfBorderWidth, -mHalfBorderWidth);
	canvas = mSurface.lockCanvas(mDirtyRect);		drawingRect = new Rect(mDirtyRect);
	if (DEBUG_VIEWPORT_WINDOW) {		if (DEBUG_VIEWPORT_WINDOW) {
	Slog.i(LOG_TAG, "Dirty rect: " + mDirtyRect);		Slog.i(LOG_TAG, "ViewportWindow bounds: " + mBounds);
			Slog.i(LOG_TAG, "ViewportWindow dirty rect: " + mDirtyRect);
	}		}
	} catch (IllegalArgumentException iae) {		}
	/* ignore */		}
	} catch (Surface.OutOfResourcesException oore) {
			// Draw without holding WindowManagerGlobalLock.
			if (alpha > 0) {
			Canvas canvas = null;
			try {
			canvas = mSurface.lockCanvas(drawingRect);
			} catch (IllegalArgumentException \| OutOfResourcesException e) {
	/* ignore */		/* ignore */
	}		}
	if (canvas == null) {		if (canvas == null) {
	return;		return;
	}		}
	if (DEBUG_VIEWPORT_WINDOW) {
	Slog.i(LOG_TAG, "Bounds: " + mBounds);
	}
	canvas.drawColor(Color.TRANSPARENT, Mode.CLEAR);		canvas.drawColor(Color.TRANSPARENT, Mode.CLEAR);
	mPaint.setAlpha(mAlpha);		mPaint.setAlpha(alpha);
	Path path = mBounds.getBoundaryPath();		canvas.drawPath(drawingBounds.getBoundaryPath(), mPaint);
	canvas.drawPath(path, mPaint);

	mSurface.unlockCanvasAndPost(canvas);		mSurface.unlockCanvasAndPost(canvas);
	t.show(mSurfaceControl);		t.show(mSurfaceControl);
	} else {		} else {
	t.hide(mSurfaceControl);		t.hide(mSurfaceControl);
	}		}
	}		}
	}

	void releaseSurface() {		void releaseSurface() {
	if (mBlastBufferQueue != null) {		if (mBlastBufferQueue != null) {