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799168929c
Summary: @public This diff unifies the logic for detecting when images refer to XCAsset files into a single function (RCTXCAssetNameForURL) and uses it for both +[RCTConvert UIImage:] and RCTImageLoader. I've also tightened the definition of XCAssets so that it only applies to images inside .car files, not any image inside the main bundle. This avoids using the +[UIImage imageNamed:] when not strictly necessary, which is desirable since that method is not thread-safe, and has undocumented caching behavior that is difficult to reason about. Reviewed By: @javache Differential Revision: D2526400 fb-gh-sync-id: 7199c2a44f1d55ff236d2c38a0a9368739b993d5
60 lines
1.5 KiB
Objective-C
60 lines
1.5 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 "RCTXCAssetImageLoader.h"
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#import "RCTUtils.h"
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@implementation RCTXCAssetImageLoader
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RCT_EXPORT_MODULE()
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- (BOOL)canLoadImageURL:(NSURL *)requestURL
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{
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return RCTIsXCAssetURL(requestURL);
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}
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- (float)imageLoaderPriority
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{
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return 100; // higher priority than any ordinary file loader
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}
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- (RCTImageLoaderCancellationBlock)loadImageForURL:(NSURL *)imageURL size:(CGSize)size scale:(CGFloat)scale resizeMode:(UIViewContentMode)resizeMode progressHandler:(RCTImageLoaderProgressBlock)progressHandler completionHandler:(RCTImageLoaderCompletionBlock)completionHandler
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{
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__block BOOL cancelled = NO;
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dispatch_async(dispatch_get_main_queue(), ^{
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if (cancelled) {
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return;
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}
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NSString *imageName = RCTBundlePathForURL(imageURL);
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UIImage *image = [UIImage imageNamed:imageName];
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if (image) {
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if (progressHandler) {
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progressHandler(1, 1);
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}
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if (completionHandler) {
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completionHandler(nil, image);
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}
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} else {
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if (completionHandler) {
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NSString *message = [NSString stringWithFormat:@"Could not find image named %@", imageName];
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completionHandler(RCTErrorWithMessage(message), nil);
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}
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}
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});
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return ^{
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cancelled = YES;
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};
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}
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@end
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