Merge "SurfaceView: Expose hook for subclass to position child surfaces." into pi-dev (89b18289) · Commits · e / os / android_frameworks_base

core/java/android/view/SurfaceView.java

+26 −11

Original line number	Diff line number	Diff line
		@@ -179,6 +179,8 @@ public class SurfaceView extends View implements ViewRootImpl.WindowStoppedCallb

		private int mPendingReportDraws;

		private SurfaceControl.Transaction mRtTransaction = new SurfaceControl.Transaction();

		public SurfaceView(Context context) {
		this(context, null);
		}
		@@ -774,21 +776,34 @@ public class SurfaceView extends View implements ViewRootImpl.WindowStoppedCallb
		});
		}

		/**
		* A place to over-ride for applying child-surface transactions.
		* These can be synchronized with the viewroot surface using deferTransaction.
		*
		* Called from RenderWorker while UI thread is paused.
		* @hide
		*/
		protected void applyChildSurfaceTransaction_renderWorker(SurfaceControl.Transaction t,
		Surface viewRootSurface, long nextViewRootFrameNumber) {
		}

		private void setParentSpaceRectangle(Rect position, long frameNumber) {
		ViewRootImpl viewRoot = getViewRootImpl();

		SurfaceControl.openTransaction();
		try {
		if (frameNumber > 0) {
		mSurfaceControl.deferTransactionUntil(viewRoot.mSurface, frameNumber);
		mRtTransaction.deferTransactionUntilSurface(mSurfaceControl, viewRoot.mSurface,
		frameNumber);
		}
		mSurfaceControl.setPosition(position.left, position.top);
		mSurfaceControl.setMatrix(position.width() / (float) mSurfaceWidth,
		mRtTransaction.setPosition(mSurfaceControl,position.left, position.top);
		mRtTransaction.setMatrix(mSurfaceControl,
		position.width() / (float) mSurfaceWidth,
		0.0f, 0.0f,
		position.height() / (float) mSurfaceHeight);
		} finally {
		SurfaceControl.closeTransaction();
		}

		applyChildSurfaceTransaction_renderWorker(mRtTransaction, viewRoot.mSurface,
		frameNumber);

		mRtTransaction.apply();
		}

		private Rect mRTLastReportedPosition = new Rect();