63 lines
1.7 KiB
Mathematica
63 lines
1.7 KiB
Mathematica
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//
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// RCTImageRequestHandler.m
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// RCTImage
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//
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// Created by Nick Lockwood on 09/06/2015.
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// Copyright (c) 2015 Facebook. All rights reserved.
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//
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#import "RCTImageRequestHandler.h"
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#import <UIKit/UIKit.h>
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#import "RCTImageLoader.h"
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#import "RCTUtils.h"
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@implementation RCTImageRequestHandler
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{
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NSInteger _currentToken;
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}
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RCT_EXPORT_MODULE()
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- (BOOL)canHandleRequest:(NSURLRequest *)request
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{
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return [@[@"assets-library", @"ph"] containsObject:[request.URL.scheme lowercaseString]];
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}
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- (id)sendRequest:(NSURLRequest *)request
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withDelegate:(id<RCTURLRequestDelegate>)delegate
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{
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NSNumber *requestToken = @(++_currentToken);
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NSString *URLString = [request.URL absoluteString];
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[RCTImageLoader loadImageWithTag:URLString callback:^(NSError *error, UIImage *image) {
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if (error) {
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[delegate URLRequest:requestToken didCompleteWithError:error];
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return;
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}
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NSString *mimeType = nil;
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NSData *imageData = nil;
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if (RCTImageHasAlpha(image.CGImage)) {
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mimeType = @"image/png";
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imageData = UIImagePNGRepresentation(image);
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} else {
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mimeType = @"image/jpeg";
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imageData = UIImageJPEGRepresentation(image, 1.0);
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}
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NSURLResponse *response = [[NSURLResponse alloc] initWithURL:request.URL
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MIMEType:mimeType
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expectedContentLength:imageData.length
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textEncodingName:nil];
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[delegate URLRequest:requestToken didReceiveResponse:response];
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[delegate URLRequest:requestToken didReceiveData:imageData];
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[delegate URLRequest:requestToken didCompleteWithError:nil];
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}];
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return requestToken;
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}
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@end
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