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// AFImageRequestOperation.m
//
// Copyright (c) 2011 Gowalla (http://gowalla.com/)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
#import "AFImageRequestOperation.h"
static dispatch_queue_t af_image_request_operation_processing_queue;
static dispatch_queue_t image_request_operation_processing_queue() {
if (af_image_request_operation_processing_queue == NULL) {
af_image_request_operation_processing_queue = dispatch_queue_create("com.alamofire.networking.image-request.processing", 0);
}
return af_image_request_operation_processing_queue;
}
@interface AFImageRequestOperation ()
#if __IPHONE_OS_VERSION_MIN_REQUIRED
@property (readwrite, nonatomic, retain) UIImage *responseImage;
#elif __MAC_OS_X_VERSION_MIN_REQUIRED
@property (readwrite, nonatomic, retain) NSImage *responseImage;
#endif
+ (NSSet *)defaultAcceptableContentTypes;
+ (NSSet *)defaultAcceptablePathExtensions;
@end
@implementation AFImageRequestOperation
@synthesize responseImage = _responseImage;
#if __IPHONE_OS_VERSION_MIN_REQUIRED
@synthesize imageScale = _imageScale;
#endif
#if __IPHONE_OS_VERSION_MIN_REQUIRED
+ (AFImageRequestOperation *)imageRequestOperationWithRequest:(NSURLRequest *)urlRequest
success:(void (^)(UIImage *image))success
{
return [self imageRequestOperationWithRequest:urlRequest imageProcessingBlock:nil cacheName:nil success:^(NSURLRequest __unused *request, NSHTTPURLResponse __unused *response, UIImage *image) {
if (success) {
success(image);
}
} failure:nil];
}
#elif __MAC_OS_X_VERSION_MIN_REQUIRED
+ (AFImageRequestOperation *)imageRequestOperationWithRequest:(NSURLRequest *)urlRequest
success:(void (^)(NSImage *image))success
{
return [self imageRequestOperationWithRequest:urlRequest imageProcessingBlock:nil cacheName:nil success:^(NSURLRequest __unused *request, NSHTTPURLResponse __unused *response, NSImage *image) {
if (success) {
success(image);
}
} failure:nil];
}
#endif
#if __IPHONE_OS_VERSION_MIN_REQUIRED
+ (AFImageRequestOperation *)imageRequestOperationWithRequest:(NSURLRequest *)urlRequest
imageProcessingBlock:(UIImage *(^)(UIImage *))imageProcessingBlock
cacheName:(NSString *)cacheNameOrNil
success:(void (^)(NSURLRequest *request, NSHTTPURLResponse *response, UIImage *image))success
failure:(void (^)(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error))failure
{
AFImageRequestOperation *requestOperation = [[[AFImageRequestOperation alloc] initWithRequest:urlRequest] autorelease];
[requestOperation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
if (success) {
UIImage *image = responseObject;
if (imageProcessingBlock) {
image = imageProcessingBlock(image);
}
success(operation.request, operation.response, image);
}
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
if (failure) {
failure(operation.request, operation.response, error);
}
}];
return requestOperation;
}
#elif __MAC_OS_X_VERSION_MIN_REQUIRED
+ (AFImageRequestOperation *)imageRequestOperationWithRequest:(NSURLRequest *)urlRequest
imageProcessingBlock:(NSImage *(^)(NSImage *))imageProcessingBlock
cacheName:(NSString *)cacheNameOrNil
success:(void (^)(NSURLRequest *request, NSHTTPURLResponse *response, NSImage *image))success
failure:(void (^)(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error))failure
{
AFImageRequestOperation *requestOperation = [[[AFImageRequestOperation alloc] initWithRequest:urlRequest] autorelease];
[requestOperation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
if (success) {
NSImage *image = responseObject;
if (imageProcessingBlock) {
image = imageProcessingBlock(image);
}
success(operation.request, operation.response, image);
}
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
if (failure) {
failure(operation.request, operation.response, error);
}
}];
return requestOperation;
}
#endif
+ (NSSet *)defaultAcceptableContentTypes {
return [NSSet setWithObjects:@"image/tiff", @"image/jpeg", @"image/gif", @"image/png", @"image/ico", @"image/x-icon", @"image/bmp", @"image/x-bmp", @"image/x-xbitmap", @"image/x-win-bitmap", nil];
}
+ (NSSet *)defaultAcceptablePathExtensions {
return [NSSet setWithObjects:@"tif", @"tiff", @"jpg", @"jpeg", @"gif", @"png", @"ico", @"bmp", @"cur", nil];
}
- (id)initWithRequest:(NSURLRequest *)urlRequest {
self = [super initWithRequest:urlRequest];
if (!self) {
return nil;
}
self.acceptableContentTypes = [[self class] defaultAcceptableContentTypes];
#if __IPHONE_OS_VERSION_MIN_REQUIRED
self.imageScale = [[UIScreen mainScreen] scale];
#endif
return self;
}
- (void)dealloc {
[_responseImage release];
[super dealloc];
}
#if __IPHONE_OS_VERSION_MIN_REQUIRED
- (UIImage *)responseImage {
if (!_responseImage && [self.responseData length] > 0 && [self isFinished]) {
UIImage *image = [UIImage imageWithData:self.responseData];
self.responseImage = [UIImage imageWithCGImage:[image CGImage] scale:self.imageScale orientation:image.imageOrientation];
}
return _responseImage;
}
- (void)setImageScale:(CGFloat)imageScale {
if (imageScale == _imageScale) {
return;
}
[self willChangeValueForKey:@"imageScale"];
_imageScale = imageScale;
[self didChangeValueForKey:@"imageScale"];
self.responseImage = nil;
}
#elif __MAC_OS_X_VERSION_MIN_REQUIRED
- (NSImage *)responseImage {
if (!_responseImage && [self.responseData length] > 0 && [self isFinished]) {
// Ensure that the image is set to it's correct pixel width and height
NSBitmapImageRep *bitimage = [[NSBitmapImageRep alloc] initWithData:self.responseData];
self.responseImage = [[[NSImage alloc] initWithSize:NSMakeSize([bitimage pixelsWide], [bitimage pixelsHigh])] autorelease];
[self.responseImage addRepresentation:bitimage];
[bitimage release];
}
return _responseImage;
}
#endif
#pragma mark - AFHTTPClientOperation
+ (BOOL)canProcessRequest:(NSURLRequest *)request {
return [[self defaultAcceptableContentTypes] containsObject:[request valueForHTTPHeaderField:@"Accept"]] || [[self defaultAcceptablePathExtensions] containsObject:[[request URL] pathExtension]];
}
#if __IPHONE_OS_VERSION_MIN_REQUIRED
+ (AFHTTPRequestOperation *)HTTPRequestOperationWithRequest:(NSURLRequest *)urlRequest
success:(void (^)(id object))success
failure:(void (^)(NSHTTPURLResponse *response, NSError *error))failure
{
return [self imageRequestOperationWithRequest:urlRequest imageProcessingBlock:nil cacheName:nil success:^(NSURLRequest __unused *request, NSHTTPURLResponse __unused *response, UIImage *image) {
success(image);
} failure:^(NSURLRequest __unused *request, NSHTTPURLResponse *response, NSError *error) {
failure(response, error);
}];
}
#elif __MAC_OS_X_VERSION_MIN_REQUIRED
+ (AFHTTPRequestOperation *)HTTPRequestOperationWithRequest:(NSURLRequest *)urlRequest
success:(void (^)(id object))success
failure:(void (^)(NSHTTPURLResponse *response, NSError *error))failure
{
return [self imageRequestOperationWithRequest:urlRequest imageProcessingBlock:nil cacheName:nil success:^(NSURLRequest __unused *request, NSHTTPURLResponse __unused *response, NSImage *image) {
success(image);
} failure:^(NSURLRequest __unused *request, NSHTTPURLResponse *response, NSError *error) {
failure(response, error);
}];
}
#endif
- (void)setCompletionBlockWithSuccess:(void (^)(AFHTTPRequestOperation *operation, id responseObject))success
failure:(void (^)(AFHTTPRequestOperation *operation, NSError *error))failure
{
self.completionBlock = ^ {
if ([self isCancelled]) {
return;
}
dispatch_async(image_request_operation_processing_queue(), ^(void) {
if (self.error) {
if (failure) {
dispatch_async(self.failureCallbackQueue ? self.failureCallbackQueue : dispatch_get_main_queue(), ^{
failure(self, self.error);
});
}
} else {
if (success) {
#if __IPHONE_OS_VERSION_MIN_REQUIRED
UIImage *image = nil;
#elif __MAC_OS_X_VERSION_MIN_REQUIRED
NSImage *image = nil;
#endif
image = self.responseImage;
dispatch_async(self.successCallbackQueue ? self.successCallbackQueue : dispatch_get_main_queue(), ^{
success(self, image);
});
}
}
});
};
}
@end
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