76 lines
3.3 KiB
Objective-C
76 lines
3.3 KiB
Objective-C
// AFImageCache.h
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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 <Foundation/Foundation.h>
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#import "AFImageRequestOperation.h"
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#import <Availability.h>
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/**
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`AFImageCache` is an `NSCache` that stores and retrieves images from cache.
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@discussion `AFImageCache` is used to cache images for successful `AFImageRequestOperations` with the proper cache policy.
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*/
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@interface AFImageCache : NSCache
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#if __IPHONE_OS_VERSION_MIN_REQUIRED
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/**
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The scale factor used when interpreting the cached image data. Specifying a scale factor of 1.0 results in an image whose size matches the pixel-based dimensions of the image. Applying a different scale factor changes the size of the image as reported by the size property. This is set to the value of `[[UIScreen mainScreen] scale]` by default, which automatically scales images for retina displays, for instance.
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*/
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@property (nonatomic, assign) CGFloat imageScale;
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#endif
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/**
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Returns the shared image cache object for the system.
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@return The systemwide image cache.
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*/
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+ (AFImageCache *)sharedImageCache;
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/**
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Returns the image associated with a given URL and cache name.
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@param url The URL associated with the image in the cache.
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@param cacheName The cache name associated with the image in the cache. This allows for multiple versions of an image to be associated for a single URL, such as image thumbnails, for instance.
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@return The image associated with the URL and cache name, or `nil` if not image exists.
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*/
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#if __IPHONE_OS_VERSION_MIN_REQUIRED
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- (UIImage *)cachedImageForURL:(NSURL *)url
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cacheName:(NSString *)cacheName;
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#elif __MAC_OS_X_VERSION_MIN_REQUIRED
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- (NSImage *)cachedImageForURL:(NSURL *)url
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cacheName:(NSString *)cacheName;
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#endif
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/**
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Stores image data into cache, associated with a given URL and cache name.
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@param imageData The image data to be stored in cache.
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@param url The URL to be associated with the image.
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@param cacheName The cache name to be associated with the image in the cache. This allows for multiple versions of an image to be associated for a single URL, such as image thumbnails, for instance.
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*/
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- (void)cacheImageData:(NSData *)imageData
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forURL:(NSURL *)url
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cacheName:(NSString *)cacheName;
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@end
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