Expose method to create a SyncRtSurfaceTransactionApplier when attached (71eda589) · Commits · e / os / android_frameworks_base

packages/SystemUI/shared/src/com/android/systemui/shared/system/SyncRtSurfaceTransactionApplier.java

+31 −0

Original line number	Diff line number	Diff line
		@@ -25,6 +25,8 @@ import android.view.SurfaceControl.Transaction;
		import android.view.View;
		import android.view.ViewRootImpl;

		import java.util.function.Consumer;

		/**
		* Helper class to apply surface transactions in sync with RenderThread.
		*/
		@@ -78,6 +80,35 @@ public class SyncRtSurfaceTransactionApplier {
		applyParams(t.mTransaction, params, t.mTmpValues);
		}

		/**
		* Creates an instance of SyncRtSurfaceTransactionApplier, deferring until the target view is
		* attached if necessary.
		*/
		public static void create(final View targetView,
		final Consumer<SyncRtSurfaceTransactionApplier> callback) {
		if (targetView == null) {
		// No target view, no applier
		callback.accept(null);
		} else if (targetView.getViewRootImpl() != null) {
		// Already attached, we're good to go
		callback.accept(new SyncRtSurfaceTransactionApplier(targetView));
		} else {
		// Haven't been attached before we can get the view root
		targetView.addOnAttachStateChangeListener(new View.OnAttachStateChangeListener() {
		@Override
		public void onViewAttachedToWindow(View v) {
		targetView.removeOnAttachStateChangeListener(this);
		callback.accept(new SyncRtSurfaceTransactionApplier(targetView));
		}

		@Override
		public void onViewDetachedFromWindow(View v) {
		// Do nothing
		}
		});
		}
		}

		private static void applyParams(Transaction t, SurfaceParams params, float[] tmpFloat9) {
		t.setMatrix(params.surface, params.matrix, tmpFloat9);
		t.setWindowCrop(params.surface, params.windowCrop);