48 lines
1.7 KiB
Objective-C
48 lines
1.7 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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typedef void (^RCTDataDownloadBlock)(NSData *data, NSError *error);
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typedef void (^RCTImageDownloadBlock)(UIImage *image, NSError *error);
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@interface RCTImageDownloader : NSObject
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+ (instancetype)sharedInstance;
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/**
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* Downloads a block of raw data and returns it. Note that the callback block
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* will not be executed on the same thread you called the method from, nor on
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* the main thread. Returns a token that can be used to cancel the download.
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*/
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- (id)downloadDataForURL:(NSURL *)url
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block:(RCTDataDownloadBlock)block;
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/**
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* Downloads an image and decompresses it a the size specified. The compressed
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* image will be cached in memory and to disk. Note that the callback block
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* will not be executed on the same thread you called the method from, nor on
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* the main thread. Returns a token that can be used to cancel the download.
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*/
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- (id)downloadImageForURL:(NSURL *)url
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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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backgroundColor:(UIColor *)backgroundColor
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block:(RCTImageDownloadBlock)block;
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/**
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* Cancel an in-flight download. If multiple requets have been made for the
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* same image, only the request that relates to the token passed will be
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* cancelled.
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*/
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- (void)cancelDownload:(id)downloadToken;
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@end
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