[react-native] Open-source ReactART for native

Libraries/ART/ARTNode.h

@@ -0,0 +1,33 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+#import <Foundation/Foundation.h>
+#import <UIKit/UIKit.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