55 lines
1.4 KiB
C
55 lines
1.4 KiB
C
|
/**
|
||
|
|
* 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>
|
||
|
|
|
||
|
|
@class CADisplayLink;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Interface containing the information about the last screen refresh.
|
||
|
|
*/
|
||
|
|
@interface RCTFrameUpdate : NSObject
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Timestamp for the actual screen refresh
|
||
|
|
*/
|
||
|
|
@property (nonatomic, readonly) NSTimeInterval timestamp;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Time since the last frame update ( >= 16.6ms )
|
||
|
|
*/
|
||
|
|
@property (nonatomic, readonly) NSTimeInterval deltaTime;
|
||
|
|
|
||
|
|
- (instancetype)initWithDisplayLink:(CADisplayLink *)displayLink NS_DESIGNATED_INITIALIZER;
|
||
|
|
|
||
|
|
@end
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Protocol that must be implemented for subscribing to display refreshes (DisplayLink updates)
|
||
|
|
*/
|
||
|
|
@protocol RCTFrameUpdateObserver <NSObject>
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Method called on every screen refresh (if paused != YES)
|
||
|
|
*/
|
||
|
|
- (void)didUpdateFrame:(RCTFrameUpdate *)update;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Synthesize and set to true to pause the calls to -[didUpdateFrame:]
|
||
|
|
*/
|
||
|
|
@property (nonatomic, readonly, getter=isPaused) BOOL paused;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Callback for pause/resume observer.
|
||
|
|
* Observer should call it when paused property is changed.
|
||
|
|
*/
|
||
|
|
@property (nonatomic, copy) dispatch_block_t pauseCallback;
|
||
|
|
|
||
|
|
@end
|