Files

68 lines
1.8 KiB
Objective-C

/*!
* iOS SDK
*
* Tencent is pleased to support the open source community by making
* Hippy available.
*
* Copyright (C) 2019 THL A29 Limited, a Tencent company.
* All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#import <Foundation/Foundation.h>
@class CADisplayLink;
/**
* Interface containing the information about the last screen refresh.
*/
@interface HippyFrameUpdate : 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;
@end
/**
* Protocol that must be implemented for subscribing to display refreshes (DisplayLink updates)
*/
@protocol HippyFrameUpdateObserver <NSObject>
/**
* Method called on every screen refresh (if paused != YES)
*/
- (void)didUpdateFrame:(HippyFrameUpdate *)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