101 lines
3.0 KiB
Mathematica
101 lines
3.0 KiB
Mathematica
|
/**
|
||
|
|
* Copyright (c) 2015-present, Facebook, Inc.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* This source code is licensed under the BSD-style license found in the
|
||
|
|
* LICENSE file in the root directory of this source tree. An additional grant
|
||
|
|
* of patent rights can be found in the PATENTS file in the same directory.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#import "RCTImageCache.h"
|
||
|
|
|
||
|
|
#import <ImageIO/ImageIO.h>
|
||
|
|
|
||
|
|
#import <libkern/OSAtomic.h>
|
||
|
|
|
||
|
|
#import <objc/runtime.h>
|
||
|
|
|
||
|
|
#import "RCTConvert.h"
|
||
|
|
#import "RCTImageUtils.h"
|
||
|
|
#import "RCTNetworking.h"
|
||
|
|
#import "RCTUtils.h"
|
||
|
|
|
||
|
|
static const NSUInteger RCTMaxCachableDecodedImageSizeInBytes = 1048576; // 1MB
|
||
|
|
|
||
|
|
static NSString *RCTCacheKeyForImage(NSString *imageTag, CGSize size, CGFloat scale,
|
||
|
|
RCTResizeMode resizeMode, NSString *responseDate)
|
||
|
|
{
|
||
|
|
return [NSString stringWithFormat:@"%@|%g|%g|%g|%zd|%@",
|
||
|
|
imageTag, size.width, size.height, scale, resizeMode, responseDate];
|
||
|
|
}
|
||
|
|
|
||
|
|
@implementation RCTImageCache
|
||
|
|
{
|
||
|
|
NSOperationQueue *_imageDecodeQueue;
|
||
|
|
NSCache *_decodedImageCache;
|
||
|
|
}
|
||
|
|
|
||
|
|
- (instancetype)init
|
||
|
|
{
|
||
|
|
_decodedImageCache = [NSCache new];
|
||
|
|
_decodedImageCache.totalCostLimit = 5 * 1024 * 1024; // 5MB
|
||
|
|
|
||
|
|
[[NSNotificationCenter defaultCenter] addObserver:self
|
||
|
|
selector:@selector(clearCache)
|
||
|
|
name:UIApplicationDidReceiveMemoryWarningNotification
|
||
|
|
object:nil];
|
||
|
|
[[NSNotificationCenter defaultCenter] addObserver:self
|
||
|
|
selector:@selector(clearCache)
|
||
|
|
name:UIApplicationWillResignActiveNotification
|
||
|
|
object:nil];
|
||
|
|
|
||
|
|
return self;
|
||
|
|
}
|
||
|
|
|
||
|
|
- (void)dealloc
|
||
|
|
{
|
||
|
|
[[NSNotificationCenter defaultCenter] removeObserver:self];
|
||
|
|
}
|
||
|
|
|
||
|
|
- (void)clearCache
|
||
|
|
{
|
||
|
|
[_decodedImageCache removeAllObjects];
|
||
|
|
}
|
||
|
|
|
||
|
|
- (void)addImageToCache:(UIImage *)image
|
||
|
|
forKey:(NSString *)cacheKey
|
||
|
|
{
|
||
|
|
if (!image) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
CGFloat bytes = image.size.width * image.size.height * image.scale * image.scale * 4;
|
||
|
|
if (bytes <= RCTMaxCachableDecodedImageSizeInBytes) {
|
||
|
|
[self->_decodedImageCache setObject:image
|
||
|
|
forKey:cacheKey
|
||
|
|
cost:bytes];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
- (UIImage *)imageForUrl:(NSString *)url
|
||
|
|
size:(CGSize)size
|
||
|
|
scale:(CGFloat)scale
|
||
|
|
resizeMode:(RCTResizeMode)resizeMode
|
||
|
|
responseDate:(NSString *)responseDate
|
||
|
|
{
|
||
|
|
NSString *cacheKey = RCTCacheKeyForImage(url, size, scale, resizeMode, responseDate);
|
||
|
|
return [_decodedImageCache objectForKey:cacheKey];
|
||
|
|
}
|
||
|
|
|
||
|
|
- (void)addImageToCache:(UIImage *)image
|
||
|
|
URL:(NSString *)url
|
||
|
|
size:(CGSize)size
|
||
|
|
scale:(CGFloat)scale
|
||
|
|
resizeMode:(RCTResizeMode)resizeMode
|
||
|
|
responseDate:(NSString *)responseDate
|
||
|
|
{
|
||
|
|
NSString *cacheKey = RCTCacheKeyForImage(url, size, scale, resizeMode, responseDate);
|
||
|
|
return [self addImageToCache:image forKey:cacheKey];
|
||
|
|
}
|
||
|
|
|
||
|
|
@end
|