/** * Copyright (c) Facebook, Inc. and its affiliates. * * This source code is licensed under the MIT license found in the * LICENSE file in the root directory of this source tree. */ #import /** * ART nodes are implemented as empty UIViews but this is just an implementation detail to fit * into the existing view management. They should also be shadow views and painted on a background * thread. */ @interface ARTNode : UIView @property (nonatomic, assign) CGFloat opacity; - (void)invalidate; - (void)renderTo:(CGContextRef)context; /** * renderTo will take opacity into account and draw renderLayerTo off-screen if there is opacity * specified, then composite that onto the context. renderLayerTo always draws at opacity=1. * @abstract */ - (void)renderLayerTo:(CGContextRef)context; @end