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CLCGLayer.m
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CLCGLayer.m
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// Copyright (c) 2012, Ettore Pasquini
// Copyright (c) 2012, Cubelogic
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// - Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
// - Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// Created by Ettore Pasquini on 7/5/12.
//
//TODO: remove this dependency!
#import "ASIHTTPRequest.h"
#import "clcg_debug.h"
#import "clcg_macros.h"
#import "clcg_str_utils.h"
#import "clcg_device_utils.h"
#import "CLCGLayer.h"
/*!
@deprecated
*/
@interface CLCGLayer ()
// non-retained pointer to an external cache where to store the UIImage
// object we fetched.
#if __IPHONE_OS_VERSION_MIN_REQUIRED < 50000
@property(nonatomic,unsafe_unretained) NSCache *cache;
#else
@property(nonatomic,weak) NSCache *cache;
#endif
@property(nonatomic,strong) ASIHTTPRequest *req;
@end
@implementation CLCGLayer
-(void)dealloc
{
[self cleanupLayer];
}
-(void)cleanupLayer
{
[self setContents:nil];
_cache = nil;
[_req clearDelegatesAndCancel];
}
-(void)loadImageForURL:(NSString*)normalurl
retinaURL:(NSString*)retinaurl
cache:(NSCache*)cache
{
if (_req) {
[_req cancel];
}
self.cache = cache;
// don't use the built-in CLCGImageLoader cache if we're using an external cache
self.req = [CLCGImageLoader loadImageForURL:normalurl
retinaURL:retinaurl
useCache:(_cache == nil)
block:^(UIImage *img, int http_status) {
NSCache *cache = self.cache;
if (img) {
[cache
setObject:img
forKey:[[self.req
originalURL] absoluteString]];
[self setContents:(id)[img CGImage]];
} else {
CLCGP(@"Error loading image. HTTP status=%d",
http_status);
}
self.req = nil;
}];
}
@end