react-native/Libraries/ART/ARTNode.h

31 lines
836 B
Objective-C

/**
* 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 <React/UIView+React.h>
/**
* 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