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61c648d564
Summary: RCTNetworkImageView and RCTStaticImage had significant overlap in functionality, but each had a different subset of features and bugs. This diff merges most of the functionality of RCTNetworkImageView into RCTStaticImage, eliminating some bugs in the former, such as constant redrawing when properties were changed. I've also removed the onLoadAbort event for now (as it wasn't implemented), and renamed the other events to match the web specs for `<img>` and XHMLHttpRequest. The API is essentially what Adobe proposed here: http://blogs.adobe.com/webplatform/2012/01/13/html5-image-progress-events/ The following features have not yet been ported from RCTNetworkImageView: - Background color compositing. It's not clear that this adds much value and it increases memory consumption, etc. - Image request cancelling when images are removed from view. Again, it's not clear if this is a huge benefit, but if it is it should be combined with other optimisations, such as unloading offscreen images. (Note that this only affects the open source fork. For now, internal apps will still use FBNetworkImageView for remote images.)
54 lines
1.8 KiB
Objective-C
54 lines
1.8 KiB
Objective-C
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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#import <UIKit/UIKit.h>
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@class ALAssetsLibrary;
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typedef void (^RCTImageLoaderProgressBlock)(int64_t written, int64_t total);
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typedef void (^RCTImageLoaderCompletionBlock)(NSError *error, id /* UIImage or CAAnimation */);
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typedef void (^RCTImageLoaderCancellationBlock)(void);
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@interface RCTImageLoader : NSObject
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/**
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* The shared asset library instance.
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*/
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+ (ALAssetsLibrary *)assetsLibrary;
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/**
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* Can be called from any thread.
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* Will always call callback on main thread.
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*/
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+ (RCTImageLoaderCancellationBlock)loadImageWithTag:(NSString *)imageTag
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callback:(RCTImageLoaderCompletionBlock)callback;
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/**
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* As above, but includes target size, scale and resizeMode, which are used to
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* select the optimal dimensions for the loaded image.
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*/
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+ (RCTImageLoaderCancellationBlock)loadImageWithTag:(NSString *)imageTag
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size:(CGSize)size
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scale:(CGFloat)scale
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resizeMode:(UIViewContentMode)resizeMode
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progressBlock:(RCTImageLoaderProgressBlock)progress
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completionBlock:(RCTImageLoaderCompletionBlock)completion;
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/**
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* Is the specified image tag an asset library image?
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*/
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+ (BOOL)isAssetLibraryImage:(NSString *)imageTag;
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/**
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* Is the specified image tag a remote image?
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*/
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+ (BOOL)isRemoteImage:(NSString *)imageTag;
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@end
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