screen_ios.git - Gitblit

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			/*
			* This file is part of the SDWebImage package.
			* (c) Olivier Poitrey <rs@dailymotion.com>
			*
			* For the full copyright and license information, please view the LICENSE
			* file that was distributed with this source code.
			*/

			#import "SDWebImageCompat.h"

			#if SD_UIKIT \|\| SD_MAC
			#import "SDImageCache.h"

			// This class is used to provide a transition animation after the view category load image finished. Use this on `sd_imageTransition` in UIView+WebCache.h
			// for UIKit(iOS & tvOS), we use `+[UIView transitionWithView:duration:options:animations:completion]` for transition animation.
			// for AppKit(macOS), we use `+[NSAnimationContext runAnimationGroup:completionHandler:]` for transition animation. You can call `+[NSAnimationContext currentContext]` to grab the context during animations block.
			// These transition are provided for basic usage. If you need complicated animation, consider to directly use Core Animation or use `SDWebImageAvoidAutoSetImage` and implement your own after image load finished.

			#if SD_UIKIT
			typedef UIViewAnimationOptions SDWebImageAnimationOptions;
			#else
			typedef NS_OPTIONS(NSUInteger, SDWebImageAnimationOptions) {
			SDWebImageAnimationOptionAllowsImplicitAnimation = 1 << 0, // specify `allowsImplicitAnimation` for the `NSAnimationContext`
			};
			#endif

			typedef void (^SDWebImageTransitionPreparesBlock)(__kindof UIView * _Nonnull view, UIImage * _Nullable image, NSData * _Nullable imageData, SDImageCacheType cacheType, NSURL * _Nullable imageURL);
			typedef void (^SDWebImageTransitionAnimationsBlock)(__kindof UIView * _Nonnull view, UIImage * _Nullable image);
			typedef void (^SDWebImageTransitionCompletionBlock)(BOOL finished);

			@interface SDWebImageTransition : NSObject

			/**
			By default, we set the image to the view at the beginning of the animtions. You can disable this and provide custom set image process
			*/
			@property (nonatomic, assign) BOOL avoidAutoSetImage;
			/**
			The duration of the transition animation, measured in seconds. Defaults to 0.5.
			*/
			@property (nonatomic, assign) NSTimeInterval duration;
			/**
			The timing function used for all animations within this transition animation (macOS).
			*/
			@property (nonatomic, strong, nullable) CAMediaTimingFunction *timingFunction NS_AVAILABLE_MAC(10_7);
			/**
			A mask of options indicating how you want to perform the animations.
			*/
			@property (nonatomic, assign) SDWebImageAnimationOptions animationOptions;
			/**
			A block object to be executed before the animation sequence starts.
			*/
			@property (nonatomic, copy, nullable) SDWebImageTransitionPreparesBlock prepares;
			/**
			A block object that contains the changes you want to make to the specified view.
			*/
			@property (nonatomic, copy, nullable) SDWebImageTransitionAnimationsBlock animations;
			/**
			A block object to be executed when the animation sequence ends.
			*/
			@property (nonatomic, copy, nullable) SDWebImageTransitionCompletionBlock completion;

			@end

			// Convenience way to create transition. Remember to specify the duration if needed.
			// for UIKit, these transition just use the correspond `animationOptions`. By default we enable `UIViewAnimationOptionAllowUserInteraction` to allow user interaction during transition.
			// for AppKit, these transition use Core Animation in `animations`. So your view must be layer-backed. Set `wantsLayer = YES` before you apply it.

			@interface SDWebImageTransition (Conveniences)

			// class property is available in Xcode 8. We will drop the Xcode 7.3 support in 5.x
			#if __has_feature(objc_class_property)
			/// Fade transition.
			@property (nonatomic, class, nonnull, readonly) SDWebImageTransition *fadeTransition;
			/// Flip from left transition.
			@property (nonatomic, class, nonnull, readonly) SDWebImageTransition *flipFromLeftTransition;
			/// Flip from right transition.
			@property (nonatomic, class, nonnull, readonly) SDWebImageTransition *flipFromRightTransition;
			/// Flip from top transition.
			@property (nonatomic, class, nonnull, readonly) SDWebImageTransition *flipFromTopTransition;
			/// Flip from bottom transition.
			@property (nonatomic, class, nonnull, readonly) SDWebImageTransition *flipFromBottomTransition;
			/// Curl up transition.
			@property (nonatomic, class, nonnull, readonly) SDWebImageTransition *curlUpTransition;
			/// Curl down transition.
			@property (nonatomic, class, nonnull, readonly) SDWebImageTransition *curlDownTransition;
			#else
			+ (nonnull instancetype)fadeTransition;
			+ (nonnull instancetype)flipFromLeftTransition;
			+ (nonnull instancetype)flipFromRightTransition;
			+ (nonnull instancetype)flipFromTopTransition;
			+ (nonnull instancetype)flipFromBottomTransition;
			+ (nonnull instancetype)curlUpTransition;
			+ (nonnull instancetype)curlDownTransition;
			#endif

			@end

			#endif