mirror of
https://github.com/status-im/react-native.git
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b672294858
Summary: public The +[RCTConvert UIImage:] function, while convenient, is inherently limited by being synchronous, which means that it cannot be used to load remote images, and may not be efficient for local images either. It's also unable to access the bridge, which means that it cannot take advantage of the modular image-loading pipeline. This diff introduces a new RCTImageSource class which can be used to pass image source objects over the bridge and defer loading until later. I've also added automatic application of the `resolveAssetSource()` function based on prop type, and fixed up the image logic in NavigatorIOS and TabBarIOS. Reviewed By: javache Differential Revision: D2631541 fb-gh-sync-id: 6604635e8bb5394425102487f1ee7cd729321877
74 lines
1.9 KiB
Objective-C
74 lines
1.9 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 "RCTShadowVirtualImage.h"
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#import "RCTImageLoader.h"
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#import "RCTBridge.h"
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#import "RCTConvert.h"
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#import "RCTUIManager.h"
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@implementation RCTShadowVirtualImage
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{
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RCTBridge *_bridge;
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RCTImageLoaderCancellationBlock _cancellationBlock;
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}
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@synthesize image = _image;
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- (instancetype)initWithBridge:(RCTBridge *)bridge
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{
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if ((self = [super init])) {
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_bridge = bridge;
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}
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return self;
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}
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RCT_NOT_IMPLEMENTED(-(instancetype)init)
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- (void)setSource:(RCTImageSource *)source
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{
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if (![source isEqual:_source]) {
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// Cancel previous request
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if (_cancellationBlock) {
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_cancellationBlock();
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}
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_source = source;
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__weak RCTShadowVirtualImage *weakSelf = self;
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_cancellationBlock = [_bridge.imageLoader loadImageWithTag:source.imageURL.absoluteString
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size:source.size
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scale:source.scale
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resizeMode:UIViewContentModeScaleToFill
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progressBlock:nil
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completionBlock:^(NSError *error, UIImage *image) {
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dispatch_async(_bridge.uiManager.methodQueue, ^{
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RCTShadowVirtualImage *strongSelf = weakSelf;
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if (![source isEqual:strongSelf.source]) {
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// Bail out if source has changed since we started loading
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return;
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}
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strongSelf->_image = image;
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[strongSelf dirtyText];
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});
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}];
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}
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}
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- (void)dealloc
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{
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if (_cancellationBlock) {
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_cancellationBlock();
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}
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}
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@end
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