73 lines
3 KiB
Objective-C
73 lines
3 KiB
Objective-C
// AFImageRequest.m
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//
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// Copyright (c) 2011 Gowalla (http://gowalla.com/)
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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#import "AFImageRequest.h"
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#import "AFImageRequestOperation.h"
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#import "AFURLCache.h"
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static NSOperationQueue *_operationQueue = nil;
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static NSMutableSet *_cachedRequests = nil;
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@implementation AFImageRequest
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+ (void)initialize {
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_operationQueue = [[NSOperationQueue alloc] init];
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[_operationQueue setMaxConcurrentOperationCount:6];
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_cachedRequests = [[NSMutableSet alloc] init];
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}
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+ (void)requestImageWithURLString:(NSString *)urlString options:(AFImageRequestOptions)options block:(void (^)(UIImage *image))block {
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[self requestImageWithURLString:urlString size:CGSizeZero options:options block:block];
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}
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+ (void)requestImageWithURLString:(NSString *)urlString size:(CGSize)imageSize options:(AFImageRequestOptions)options block:(void (^)(UIImage *image))block {
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// Append a hash to the image URL so that unique image options get cached separately
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NSString *cacheKey = [NSString stringWithFormat:@"%fx%f:%d", imageSize.width, imageSize.height, options];
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NSURL *url = [NSURL URLWithString:[urlString stringByAppendingString:[NSString stringWithFormat:@"#%@", cacheKey]]];
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if (!url) {
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if (block) {
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block(nil);
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}
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return;
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}
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NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLCacheStorageAllowed timeoutInterval:30.0];
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[request setHTTPShouldHandleCookies:NO];
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AFImageRequestOperationCallback *callback = [AFImageRequestOperationCallback callbackWithSuccess:block];
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callback.options = options;
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callback.imageSize = imageSize;
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AFImageRequestOperation *operation = [[[AFImageRequestOperation alloc] initWithRequest:request callback:callback] autorelease];
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NSCachedURLResponse *cachedResponse = [[[[AFURLCache sharedURLCache] cachedResponseForRequest:request] retain] autorelease];
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if (cachedResponse) {
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if (block) {
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block([UIImage imageWithData:[cachedResponse data]]);
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return;
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}
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}
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[_operationQueue addOperation:operation];
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}
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@end
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