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48 lines
1.6 KiB
48 lines
1.6 KiB
2 years ago
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// FLAnimatedImageView.h
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// Flipboard
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//
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// Created by Raphael Schaad on 7/8/13.
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// Copyright (c) 2013-2014 Flipboard. All rights reserved.
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//
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#import <UIKit/UIKit.h>
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@class FLAnimatedImage;
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@protocol FLAnimatedImageViewDebugDelegate;
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//
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// An `FLAnimatedImageView` can take an `FLAnimatedImage` and plays it automatically when in view hierarchy and stops when removed.
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// The animation can also be controlled with the `UIImageView` methods `-start/stop/isAnimating`.
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// It is a fully compatible `UIImageView` subclass and can be used as a drop-in component to work with existing code paths expecting to display a `UIImage`.
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// Under the hood it uses a `CADisplayLink` for playback, which can be inspected with `currentFrame` & `currentFrameIndex`.
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//
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@interface FLAnimatedImageView : UIImageView
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// Setting `[UIImageView.image]` to a non-`nil` value clears out existing `animatedImage`.
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// And vice versa, setting `animatedImage` will initially populate the `[UIImageView.image]` to its `posterImage` and then start animating and hold `currentFrame`.
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@property (nonatomic, strong) FLAnimatedImage *animatedImage;
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@property (nonatomic, strong, readonly) UIImage *currentFrame;
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@property (nonatomic, assign, readonly) NSUInteger currentFrameIndex;
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#if DEBUG
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// Only intended to report internal state for debugging
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@property (nonatomic, weak) id<FLAnimatedImageViewDebugDelegate> debug_delegate;
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#endif
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@end
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#if DEBUG
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@protocol FLAnimatedImageViewDebugDelegate <NSObject>
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@optional
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- (void)debug_animatedImageView:(FLAnimatedImageView *)animatedImageView waitingForFrame:(NSUInteger)index duration:(NSTimeInterval)duration;
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@end
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#endif
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