mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Ramanpreet Nara
af6bcfa3ab
Summary:
## Context
A React Native application can configure its RCTImageLoader by initializing it with two different sets of objects:
- id<RCTImageURLLoader>
- id<RCTImageDataDecoder>
Therefore, RCTImageLoader supports this initializer:
```
- (instancetype)initWithRedirectDelegate:(id<RCTImageRedirectProtocol>)redirectDelegate
loadersProvider:(NSArray<id<RCTImageURLLoader>> * (^)(void))getLoaders
decodersProvider:(NSArray<id<RCTImageDataDecoder>> * (^)(void))getHandlers
```
Right now, both the id<RCTImageURLLoader>s and id<RCTImageDataDecoder>s are NativeModules. So, they need to be loaded using the Bridge/TurboModuleManager.
## Problem
The method [that constructs RCTImageLoader](https://www.internalfb.com/code/fbsource/[6530647879a5e6d5edcfad029b39879c87e97bb3]/fbobjc/Apps/Wilde/FBReactModule2/FBReactModuleAPI/FBReactModuleAPI/FBReactModule.mm?lines=1462-1469) is shared between bridge mode and bridgeless mode. So, the shared constructor needs to know what infra to use to load the loaders/decoders: the TurboModuleManager, when called from a bridgeless context; the bridge, when called from a bridge context. There's no easy way to let this shared constructor know what context it's being called from. We could fork the constructor, but that's not very clean.
## Changes
In this refactor, RCTImageLoader gives its loadersProvider and decodersProvider its RCTModuleRegistry. If the module was instantiated in bridgeless mode, RCTModuleRegistry will use the TurboModuleManager. If the module was instantiated in bridge mode, RCTModuleRegistry will use the bridge. Using RCTModuleRegistry allows these two blocks to load the RCTImageURLLoaders and RCTImageDataDecoder from correct infra, in both contexts.
Changelog: [iOS][Changed] - Give RCTImageURLLoader's loader/decoder provider blocks RCTModuleRegistry
Reviewed By: PeteTheHeat
Differential Revision: D28012999
fbshipit-source-id: 09c787923b57bbf72aff95b504f88ee1f2f44283
1240 lines
49 KiB
Plaintext
1240 lines
49 KiB
Plaintext
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#import <objc/runtime.h>
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#import <atomic>
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#import <mach/mach_time.h>
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#import <ImageIO/ImageIO.h>
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#import <FBReactNativeSpec/FBReactNativeSpec.h>
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#import <React/RCTConvert.h>
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#import <React/RCTDefines.h>
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#import <React/RCTImageCache.h>
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#import <React/RCTImageLoader.h>
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#import <React/RCTImageLoaderWithAttributionProtocol.h>
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#import <React/RCTImageUtils.h>
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#import <React/RCTLog.h>
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#import <React/RCTNetworking.h>
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#import <React/RCTUtils.h>
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#import "RCTImagePlugins.h"
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using namespace facebook::react;
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static BOOL imagePerfInstrumentationEnabled = NO;
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BOOL RCTImageLoadingPerfInstrumentationEnabled(void)
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{
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return imagePerfInstrumentationEnabled;
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}
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void RCTEnableImageLoadingPerfInstrumentation(BOOL enabled)
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{
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imagePerfInstrumentationEnabled = enabled;
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}
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static NSInteger RCTImageBytesForImage(UIImage *image)
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{
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NSInteger singleImageBytes = image.size.width * image.size.height * image.scale * image.scale * 4;
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return image.images ? image.images.count * singleImageBytes : singleImageBytes;
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}
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static uint64_t monotonicTimeGetCurrentNanoseconds(void)
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{
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static struct mach_timebase_info tb_info = {0};
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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__unused int ret = mach_timebase_info(&tb_info);
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assert(0 == ret);
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});
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return (mach_absolute_time() * tb_info.numer) / tb_info.denom;
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}
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@interface RCTImageLoader() <NativeImageLoaderIOSSpec, RCTImageLoaderWithAttributionProtocol>
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@end
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@implementation UIImage (React)
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- (NSInteger)reactDecodedImageBytes
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{
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NSNumber *imageBytes = objc_getAssociatedObject(self, _cmd);
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if (!imageBytes) {
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imageBytes = @(RCTImageBytesForImage(self));
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}
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return [imageBytes integerValue];
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}
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- (void)setReactDecodedImageBytes:(NSInteger)bytes
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{
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objc_setAssociatedObject(self, @selector(reactDecodedImageBytes), @(bytes), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
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}
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@end
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@implementation RCTImageLoader
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{
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NSArray<id<RCTImageURLLoader>> * (^_loadersProvider)(RCTModuleRegistry *);
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NSArray<id<RCTImageDataDecoder>> * (^_decodersProvider)(RCTModuleRegistry *);
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NSArray<id<RCTImageURLLoader>> *_loaders;
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NSArray<id<RCTImageDataDecoder>> *_decoders;
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NSOperationQueue *_imageDecodeQueue;
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dispatch_queue_t _URLRequestQueue;
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id<RCTImageCache> _imageCache;
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NSMutableArray *_pendingTasks;
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NSInteger _activeTasks;
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NSMutableArray *_pendingDecodes;
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NSInteger _scheduledDecodes;
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NSUInteger _activeBytes;
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std::mutex _loadersMutex;
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__weak id<RCTImageRedirectProtocol> _redirectDelegate;
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}
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@synthesize bridge = _bridge;
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@synthesize moduleRegistry = _moduleRegistry;
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@synthesize maxConcurrentLoadingTasks = _maxConcurrentLoadingTasks;
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@synthesize maxConcurrentDecodingTasks = _maxConcurrentDecodingTasks;
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@synthesize maxConcurrentDecodingBytes = _maxConcurrentDecodingBytes;
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RCT_EXPORT_MODULE()
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- (instancetype)init
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{
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return [self initWithRedirectDelegate:nil];
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}
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+ (BOOL)requiresMainQueueSetup
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{
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return NO;
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}
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- (instancetype)initWithRedirectDelegate:(id<RCTImageRedirectProtocol>)redirectDelegate
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{
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if (self = [super init]) {
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_redirectDelegate = redirectDelegate;
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}
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return self;
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}
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- (instancetype)initWithRedirectDelegate:(id<RCTImageRedirectProtocol>)redirectDelegate
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loadersProvider:(NSArray<id<RCTImageURLLoader>> * (^)(RCTModuleRegistry *))getLoaders
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decodersProvider:(NSArray<id<RCTImageDataDecoder>> * (^)(RCTModuleRegistry *))getHandlers
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{
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if (self = [self initWithRedirectDelegate:redirectDelegate]) {
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_loadersProvider = getLoaders;
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_decodersProvider = getHandlers;
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}
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return self;
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}
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- (void)setUp
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{
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// Set defaults
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_maxConcurrentLoadingTasks = _maxConcurrentLoadingTasks ?: 4;
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_maxConcurrentDecodingTasks = _maxConcurrentDecodingTasks ?: 2;
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_maxConcurrentDecodingBytes = _maxConcurrentDecodingBytes ?: 30 * 1024 * 1024; // 30MB
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_URLRequestQueue = dispatch_queue_create("com.facebook.react.ImageLoaderURLRequestQueue", DISPATCH_QUEUE_SERIAL);
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}
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- (float)handlerPriority
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{
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return 2;
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}
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#pragma mark - RCTImageLoaderProtocol 1/3
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- (id<RCTImageCache>)imageCache
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{
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if (!_imageCache) {
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//set up with default cache
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_imageCache = [RCTImageCache new];
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}
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return _imageCache;
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}
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- (void)setImageCache:(id<RCTImageCache>)cache
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{
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if (_imageCache) {
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RCTLogWarn(@"RCTImageCache was already set and has now been overridden.");
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}
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_imageCache = cache;
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}
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- (id<RCTImageURLLoader>)imageURLLoaderForURL:(NSURL *)URL
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{
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if (!_maxConcurrentLoadingTasks) {
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[self setUp];
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}
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if (!_loaders) {
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std::unique_lock<std::mutex> guard(_loadersMutex);
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if (!_loaders) {
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// Get loaders, sorted in reverse priority order (highest priority first)
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if (_loadersProvider) {
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_loaders = _loadersProvider(self.moduleRegistry);
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} else {
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RCTAssert(_bridge, @"Trying to find RCTImageURLLoaders and bridge not set.");
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_loaders = [_bridge modulesConformingToProtocol:@protocol(RCTImageURLLoader)];
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}
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_loaders = [_loaders sortedArrayUsingComparator:^NSComparisonResult(id<RCTImageURLLoader> a, id<RCTImageURLLoader> b) {
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float priorityA = [a respondsToSelector:@selector(loaderPriority)] ? [a loaderPriority] : 0;
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float priorityB = [b respondsToSelector:@selector(loaderPriority)] ? [b loaderPriority] : 0;
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if (priorityA > priorityB) {
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return NSOrderedAscending;
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} else if (priorityA < priorityB) {
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return NSOrderedDescending;
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} else {
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return NSOrderedSame;
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}
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}];
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}
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}
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if (RCT_DEBUG) {
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// Check for handler conflicts
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float previousPriority = 0;
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id<RCTImageURLLoader> previousLoader = nil;
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for (id<RCTImageURLLoader> loader in _loaders) {
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float priority = [loader respondsToSelector:@selector(loaderPriority)] ? [loader loaderPriority] : 0;
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if (previousLoader && priority < previousPriority) {
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return previousLoader;
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}
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if ([loader canLoadImageURL:URL]) {
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if (previousLoader) {
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if (priority == previousPriority) {
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RCTLogError(@"The RCTImageURLLoaders %@ and %@ both reported that"
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" they can load the URL %@, and have equal priority"
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" (%g). This could result in non-deterministic behavior.",
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loader, previousLoader, URL, priority);
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}
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} else {
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previousLoader = loader;
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previousPriority = priority;
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}
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}
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}
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return previousLoader;
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}
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// Normal code path
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for (id<RCTImageURLLoader> loader in _loaders) {
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if ([loader canLoadImageURL:URL]) {
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return loader;
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}
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}
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return nil;
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}
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# pragma mark - Private Image Decoding & Resizing
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- (id<RCTImageDataDecoder>)imageDataDecoderForData:(NSData *)data
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{
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if (!_maxConcurrentLoadingTasks) {
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[self setUp];
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}
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if (!_decoders) {
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// Get decoders, sorted in reverse priority order (highest priority first)
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if (_decodersProvider) {
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_decoders = _decodersProvider(self.moduleRegistry);
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} else {
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RCTAssert(_bridge, @"Trying to find RCTImageDataDecoders and bridge not set.");
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_decoders = [_bridge modulesConformingToProtocol:@protocol(RCTImageDataDecoder)];
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}
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_decoders = [_decoders sortedArrayUsingComparator:^NSComparisonResult(id<RCTImageDataDecoder> a, id<RCTImageDataDecoder> b) {
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float priorityA = [a respondsToSelector:@selector(decoderPriority)] ? [a decoderPriority] : 0;
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float priorityB = [b respondsToSelector:@selector(decoderPriority)] ? [b decoderPriority] : 0;
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if (priorityA > priorityB) {
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return NSOrderedAscending;
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} else if (priorityA < priorityB) {
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return NSOrderedDescending;
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} else {
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return NSOrderedSame;
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}
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}];
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}
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if (RCT_DEBUG) {
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// Check for handler conflicts
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float previousPriority = 0;
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id<RCTImageDataDecoder> previousDecoder = nil;
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for (id<RCTImageDataDecoder> decoder in _decoders) {
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float priority = [decoder respondsToSelector:@selector(decoderPriority)] ? [decoder decoderPriority] : 0;
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if (previousDecoder && priority < previousPriority) {
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return previousDecoder;
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}
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if ([decoder canDecodeImageData:data]) {
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if (previousDecoder) {
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if (priority == previousPriority) {
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RCTLogError(@"The RCTImageDataDecoders %@ and %@ both reported that"
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" they can decode the data <NSData %p; %tu bytes>, and"
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" have equal priority (%g). This could result in"
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" non-deterministic behavior.",
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decoder, previousDecoder, data, data.length, priority);
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}
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} else {
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previousDecoder = decoder;
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previousPriority = priority;
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}
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}
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}
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return previousDecoder;
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}
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// Normal code path
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for (id<RCTImageDataDecoder> decoder in _decoders) {
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if ([decoder canDecodeImageData:data]) {
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return decoder;
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}
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}
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return nil;
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}
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static UIImage *RCTResizeImageIfNeeded(UIImage *image,
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CGSize size,
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CGFloat scale,
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RCTResizeMode resizeMode)
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{
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if (CGSizeEqualToSize(size, CGSizeZero) ||
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CGSizeEqualToSize(image.size, CGSizeZero) ||
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CGSizeEqualToSize(image.size, size)) {
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return image;
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}
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CGRect targetSize = RCTTargetRect(image.size, size, scale, resizeMode);
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CGAffineTransform transform = RCTTransformFromTargetRect(image.size, targetSize);
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image = RCTTransformImage(image, size, scale, transform);
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return image;
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}
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#pragma mark - RCTImageLoaderProtocol 2/3
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- (nullable RCTImageLoaderCancellationBlock)loadImageWithURLRequest:(NSURLRequest *)imageURLRequest
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callback:(RCTImageLoaderCompletionBlock)callback
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{
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return [self loadImageWithURLRequest:imageURLRequest
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priority:RCTImageLoaderPriorityImmediate
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callback:callback];
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}
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- (nullable RCTImageLoaderCancellationBlock)loadImageWithURLRequest:(NSURLRequest *)imageURLRequest
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priority:(RCTImageLoaderPriority)priority
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callback:(RCTImageLoaderCompletionBlock)callback {
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return [self loadImageWithURLRequest:imageURLRequest
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size:CGSizeZero
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scale:1
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clipped:YES
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resizeMode:RCTResizeModeStretch
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priority:priority
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progressBlock:nil
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partialLoadBlock:nil
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completionBlock:callback];
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}
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- (nullable RCTImageLoaderCancellationBlock)loadImageWithURLRequest:(NSURLRequest *)imageURLRequest
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size:(CGSize)size
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scale:(CGFloat)scale
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clipped:(BOOL)clipped
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resizeMode:(RCTResizeMode)resizeMode
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progressBlock:(RCTImageLoaderProgressBlock)progressBlock
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partialLoadBlock:(RCTImageLoaderPartialLoadBlock)partialLoadBlock
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completionBlock:(RCTImageLoaderCompletionBlock)completionBlock
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{
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return [self loadImageWithURLRequest:imageURLRequest
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size:size
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scale:scale
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clipped:clipped
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resizeMode:resizeMode
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priority:RCTImageLoaderPriorityImmediate
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progressBlock:progressBlock
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partialLoadBlock:partialLoadBlock
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completionBlock:completionBlock];
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}
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- (nullable RCTImageLoaderCancellationBlock)loadImageWithURLRequest:(NSURLRequest *)imageURLRequest
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size:(CGSize)size
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scale:(CGFloat)scale
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clipped:(BOOL)clipped
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resizeMode:(RCTResizeMode)resizeMode
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priority:(RCTImageLoaderPriority)priority
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progressBlock:(RCTImageLoaderProgressBlock)progressBlock
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partialLoadBlock:(RCTImageLoaderPartialLoadBlock)partialLoadBlock
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completionBlock:(RCTImageLoaderCompletionBlock)completionBlock
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{
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RCTImageURLLoaderRequest *request = [self loadImageWithURLRequest:imageURLRequest
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size:size
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scale:scale
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clipped:clipped
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resizeMode:resizeMode
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priority:priority
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attribution:{}
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progressBlock:progressBlock
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partialLoadBlock:partialLoadBlock
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completionBlock:^(NSError *error, UIImage *image, id metadata) {
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completionBlock(error, image);
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}];
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return ^{
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[request cancel];
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};
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}
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#pragma mark - Private Downloader Methods
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- (void)dequeueTasks
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{
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dispatch_async(_URLRequestQueue, ^{
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// Remove completed tasks
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NSMutableArray *tasksToRemove = nil;
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for (RCTNetworkTask *task in self->_pendingTasks.reverseObjectEnumerator) {
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switch (task.status) {
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case RCTNetworkTaskFinished:
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if (!tasksToRemove) {
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tasksToRemove = [NSMutableArray new];
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}
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[tasksToRemove addObject:task];
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self->_activeTasks--;
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break;
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case RCTNetworkTaskPending:
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break;
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case RCTNetworkTaskInProgress:
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// Check task isn't "stuck"
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if (task.requestToken == nil) {
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RCTLogWarn(@"Task orphaned for request %@", task.request);
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if (!tasksToRemove) {
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tasksToRemove = [NSMutableArray new];
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}
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[tasksToRemove addObject:task];
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self->_activeTasks--;
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[task cancel];
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}
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break;
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}
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}
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if (tasksToRemove) {
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[self->_pendingTasks removeObjectsInArray:tasksToRemove];
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}
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// Start queued decode
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NSInteger activeDecodes = self->_scheduledDecodes - self->_pendingDecodes.count;
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while (activeDecodes == 0 || (self->_activeBytes <= self->_maxConcurrentDecodingBytes &&
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activeDecodes <= self->_maxConcurrentDecodingTasks)) {
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dispatch_block_t decodeBlock = self->_pendingDecodes.firstObject;
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if (decodeBlock) {
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[self->_pendingDecodes removeObjectAtIndex:0];
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decodeBlock();
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} else {
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break;
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}
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}
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// Start queued tasks
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for (RCTNetworkTask *task in self->_pendingTasks) {
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if (MAX(self->_activeTasks, self->_scheduledDecodes) >= self->_maxConcurrentLoadingTasks) {
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break;
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}
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if (task.status == RCTNetworkTaskPending) {
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[task start];
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self->_activeTasks++;
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}
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}
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});
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}
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/**
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* This returns either an image, or raw image data, depending on the loading
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* path taken. This is useful if you want to skip decoding, e.g. when preloading
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* the image, or retrieving metadata.
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*/
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- (RCTImageURLLoaderRequest *)_loadImageOrDataWithURLRequest:(NSURLRequest *)request
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size:(CGSize)size
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scale:(CGFloat)scale
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resizeMode:(RCTResizeMode)resizeMode
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priority:(RCTImageLoaderPriority)priority
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attribution:(const ImageURLLoaderAttribution &)attribution
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progressBlock:(RCTImageLoaderProgressBlock)progressHandler
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partialLoadBlock:(RCTImageLoaderPartialLoadBlock)partialLoadHandler
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completionBlock:(void (^)(NSError *error, id imageOrData, id imageMetadata, BOOL cacheResult, NSURLResponse *response))completionBlock
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{
|
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{
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NSMutableURLRequest *mutableRequest = [request mutableCopy];
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[NSURLProtocol setProperty:@"RCTImageLoader"
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forKey:@"trackingName"
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inRequest:mutableRequest];
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// Add missing png extension
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if (request.URL.fileURL && request.URL.pathExtension.length == 0) {
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mutableRequest.URL = [request.URL URLByAppendingPathExtension:@"png"];
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}
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if (_redirectDelegate != nil) {
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mutableRequest.URL = [_redirectDelegate redirectAssetsURL:mutableRequest.URL];
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}
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request = mutableRequest;
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}
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// Create a copy here so the value is retained when accessed in the blocks below.
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ImageURLLoaderAttribution attributionCopy(attribution);
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|
// Find suitable image URL loader
|
|
id<RCTImageURLLoader> loadHandler = [self imageURLLoaderForURL:request.URL];
|
|
BOOL requiresScheduling = [loadHandler respondsToSelector:@selector(requiresScheduling)] ?
|
|
[loadHandler requiresScheduling] : YES;
|
|
|
|
BOOL cacheResult = [loadHandler respondsToSelector:@selector(shouldCacheLoadedImages)] ?
|
|
[loadHandler shouldCacheLoadedImages] : YES;
|
|
|
|
auto cancelled = std::make_shared<std::atomic<int>>(0);
|
|
__block dispatch_block_t cancelLoad = nil;
|
|
__block NSLock *cancelLoadLock = [NSLock new];
|
|
NSString *requestId = [NSString stringWithFormat:@"%@-%llu",[[NSUUID UUID] UUIDString], monotonicTimeGetCurrentNanoseconds()];
|
|
|
|
void (^completionHandler)(NSError *, id, id, NSURLResponse *) = ^(NSError *error, id imageOrData, id imageMetadata, NSURLResponse *response) {
|
|
[cancelLoadLock lock];
|
|
cancelLoad = nil;
|
|
[cancelLoadLock unlock];
|
|
|
|
// If we've received an image, we should try to set it synchronously,
|
|
// if it's data, do decoding on a background thread.
|
|
if (RCTIsMainQueue() && ![imageOrData isKindOfClass:[UIImage class]]) {
|
|
// Most loaders do not return on the main thread, so caller is probably not
|
|
// expecting it, and may do expensive post-processing in the callback
|
|
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
|
|
if (!std::atomic_load(cancelled.get())) {
|
|
completionBlock(error, imageOrData, imageMetadata, cacheResult, response);
|
|
}
|
|
});
|
|
} else if (!std::atomic_load(cancelled.get())) {
|
|
completionBlock(error, imageOrData, imageMetadata, cacheResult, response);
|
|
}
|
|
};
|
|
|
|
// If the loader doesn't require scheduling we call it directly on
|
|
// the main queue.
|
|
if (loadHandler && !requiresScheduling) {
|
|
if ([loadHandler conformsToProtocol:@protocol(RCTImageURLLoaderWithAttribution)]) {
|
|
return [(id<RCTImageURLLoaderWithAttribution>)loadHandler loadImageForURL:request.URL
|
|
size:size
|
|
scale:scale
|
|
resizeMode:resizeMode
|
|
requestId:requestId
|
|
priority:priority
|
|
attribution:attributionCopy
|
|
progressHandler:progressHandler
|
|
partialLoadHandler:partialLoadHandler
|
|
completionHandler:^(NSError *error, UIImage *image, id metadata) {
|
|
completionHandler(error, image, metadata, nil);
|
|
}];
|
|
}
|
|
RCTImageLoaderCancellationBlock cb = [loadHandler loadImageForURL:request.URL
|
|
size:size
|
|
scale:scale
|
|
resizeMode:resizeMode
|
|
progressHandler:progressHandler
|
|
partialLoadHandler:partialLoadHandler
|
|
completionHandler:^(NSError *error, UIImage *image) {
|
|
completionHandler(error, image, nil, nil);
|
|
}];
|
|
return [[RCTImageURLLoaderRequest alloc] initWithRequestId:nil imageURL:request.URL cancellationBlock:cb];
|
|
}
|
|
|
|
// All access to URL cache must be serialized
|
|
if (!_URLRequestQueue) {
|
|
[self setUp];
|
|
}
|
|
|
|
__weak RCTImageLoader *weakSelf = self;
|
|
dispatch_async(_URLRequestQueue, ^{
|
|
__typeof(self) strongSelf = weakSelf;
|
|
if (atomic_load(cancelled.get()) || !strongSelf) {
|
|
return;
|
|
}
|
|
|
|
if (loadHandler) {
|
|
dispatch_block_t cancelLoadLocal;
|
|
if ([loadHandler conformsToProtocol:@protocol(RCTImageURLLoaderWithAttribution)]) {
|
|
RCTImageURLLoaderRequest *loaderRequest = [(id<RCTImageURLLoaderWithAttribution>)loadHandler loadImageForURL:request.URL
|
|
size:size
|
|
scale:scale
|
|
resizeMode:resizeMode
|
|
requestId:requestId
|
|
priority:priority
|
|
attribution:attributionCopy
|
|
progressHandler:progressHandler
|
|
partialLoadHandler:partialLoadHandler
|
|
completionHandler:^(NSError *error, UIImage *image, id metadata) {
|
|
completionHandler(error, image, metadata, nil);
|
|
}];
|
|
cancelLoadLocal = loaderRequest.cancellationBlock;
|
|
} else {
|
|
cancelLoadLocal = [loadHandler loadImageForURL:request.URL
|
|
size:size
|
|
scale:scale
|
|
resizeMode:resizeMode
|
|
progressHandler:progressHandler
|
|
partialLoadHandler:partialLoadHandler
|
|
completionHandler:^(NSError *error, UIImage *image) {
|
|
completionHandler(error, image, nil, nil);
|
|
}];
|
|
}
|
|
[cancelLoadLock lock];
|
|
cancelLoad = cancelLoadLocal;
|
|
[cancelLoadLock unlock];
|
|
} else {
|
|
UIImage *image;
|
|
if (cacheResult) {
|
|
image = [[strongSelf imageCache] imageForUrl:request.URL.absoluteString
|
|
size:size
|
|
scale:scale
|
|
resizeMode:resizeMode];
|
|
}
|
|
|
|
if (image) {
|
|
completionHandler(nil, image, nil, nil);
|
|
} else {
|
|
// Use networking module to load image
|
|
dispatch_block_t cancelLoadLocal = [strongSelf _loadURLRequest:request
|
|
progressBlock:progressHandler
|
|
completionBlock:^(NSError *error, id imageOrData, NSURLResponse *response) {
|
|
completionHandler(error, imageOrData, nil, response);
|
|
}];
|
|
[cancelLoadLock lock];
|
|
cancelLoad = cancelLoadLocal;
|
|
[cancelLoadLock unlock];
|
|
}
|
|
}
|
|
});
|
|
|
|
return [[RCTImageURLLoaderRequest alloc] initWithRequestId:requestId imageURL:request.URL cancellationBlock:^{
|
|
BOOL alreadyCancelled = atomic_fetch_or(cancelled.get(), 1);
|
|
if (alreadyCancelled) {
|
|
return;
|
|
}
|
|
[cancelLoadLock lock];
|
|
dispatch_block_t cancelLoadLocal = cancelLoad;
|
|
cancelLoad = nil;
|
|
[cancelLoadLock unlock];
|
|
if (cancelLoadLocal) {
|
|
cancelLoadLocal();
|
|
}
|
|
}];
|
|
}
|
|
|
|
- (RCTImageLoaderCancellationBlock)_loadURLRequest:(NSURLRequest *)request
|
|
progressBlock:(RCTImageLoaderProgressBlock)progressHandler
|
|
completionBlock:(void (^)(NSError *error, id imageOrData, NSURLResponse *response))completionHandler
|
|
{
|
|
RCTNetworking *networking = [_moduleRegistry moduleForName:"Networking"];
|
|
if (RCT_DEBUG && !networking) {
|
|
RCTLogError(@"No suitable image URL loader found for %@. You may need to "
|
|
" import the RCTNetwork library in order to load images.",
|
|
request.URL.absoluteString);
|
|
return NULL;
|
|
}
|
|
|
|
// Check if networking module can load image
|
|
if (RCT_DEBUG && ![networking canHandleRequest:request]) {
|
|
RCTLogError(@"No suitable image URL loader found for %@", request.URL.absoluteString);
|
|
return NULL;
|
|
}
|
|
|
|
// Use networking module to load image
|
|
RCTURLRequestCompletionBlock processResponse = ^(NSURLResponse *response, NSData *data, NSError *error) {
|
|
// Check for system errors
|
|
if (error) {
|
|
completionHandler(error, nil, response);
|
|
return;
|
|
} else if (!response) {
|
|
completionHandler(RCTErrorWithMessage(@"Response metadata error"), nil, response);
|
|
return;
|
|
} else if (!data) {
|
|
completionHandler(RCTErrorWithMessage(@"Unknown image download error"), nil, response);
|
|
return;
|
|
}
|
|
|
|
// Check for http errors
|
|
if ([response isKindOfClass:[NSHTTPURLResponse class]]) {
|
|
NSInteger statusCode = ((NSHTTPURLResponse *)response).statusCode;
|
|
if (statusCode != 200) {
|
|
NSString *errorMessage = [NSString stringWithFormat:@"Failed to load %@", response.URL];
|
|
NSDictionary *userInfo = @{NSLocalizedDescriptionKey: errorMessage};
|
|
completionHandler([[NSError alloc] initWithDomain:NSURLErrorDomain
|
|
code:statusCode
|
|
userInfo:userInfo], nil, response);
|
|
return;
|
|
}
|
|
}
|
|
|
|
// Call handler
|
|
completionHandler(nil, data, response);
|
|
};
|
|
|
|
// Download image
|
|
__weak __typeof(self) weakSelf = self;
|
|
__block RCTNetworkTask *task =
|
|
[networking networkTaskWithRequest:request
|
|
completionBlock:^(NSURLResponse *response, NSData *data, NSError *error) {
|
|
__typeof(self) strongSelf = weakSelf;
|
|
if (!strongSelf) {
|
|
return;
|
|
}
|
|
|
|
if (error || !response || !data) {
|
|
NSError *someError = nil;
|
|
if (error) {
|
|
someError = error;
|
|
} else if (!response) {
|
|
someError = RCTErrorWithMessage(@"Response metadata error");
|
|
} else {
|
|
someError = RCTErrorWithMessage(@"Unknown image download error");
|
|
}
|
|
completionHandler(someError, nil, response);
|
|
[strongSelf dequeueTasks];
|
|
return;
|
|
}
|
|
|
|
dispatch_async(strongSelf->_URLRequestQueue, ^{
|
|
// Process image data
|
|
processResponse(response, data, nil);
|
|
|
|
// Prepare for next task
|
|
[strongSelf dequeueTasks];
|
|
});
|
|
}];
|
|
|
|
task.downloadProgressBlock = ^(int64_t progress, int64_t total) {
|
|
if (progressHandler) {
|
|
progressHandler(progress, total);
|
|
}
|
|
};
|
|
|
|
if (task) {
|
|
if (!_pendingTasks) {
|
|
_pendingTasks = [NSMutableArray new];
|
|
}
|
|
[_pendingTasks addObject:task];
|
|
[self dequeueTasks];
|
|
}
|
|
|
|
return ^{
|
|
__typeof(self) strongSelf = weakSelf;
|
|
if (!strongSelf || !task) {
|
|
return;
|
|
}
|
|
dispatch_async(strongSelf->_URLRequestQueue, ^{
|
|
[task cancel];
|
|
task = nil;
|
|
});
|
|
[strongSelf dequeueTasks];
|
|
};
|
|
}
|
|
|
|
#pragma mark - RCTImageLoaderWithAttributionProtocol
|
|
|
|
- (RCTImageURLLoaderRequest *)loadImageWithURLRequest:(NSURLRequest *)imageURLRequest
|
|
size:(CGSize)size
|
|
scale:(CGFloat)scale
|
|
clipped:(BOOL)clipped
|
|
resizeMode:(RCTResizeMode)resizeMode
|
|
priority:(RCTImageLoaderPriority)priority
|
|
attribution:(const ImageURLLoaderAttribution &)attribution
|
|
progressBlock:(RCTImageLoaderProgressBlock)progressBlock
|
|
partialLoadBlock:(RCTImageLoaderPartialLoadBlock)partialLoadBlock
|
|
completionBlock:(RCTImageLoaderCompletionBlockWithMetadata)completionBlock
|
|
{
|
|
auto cancelled = std::make_shared<std::atomic<int>>(0);
|
|
__block dispatch_block_t cancelLoad = nil;
|
|
__block NSLock *cancelLoadLock = [NSLock new];
|
|
dispatch_block_t cancellationBlock = ^{
|
|
BOOL alreadyCancelled = atomic_fetch_or(cancelled.get(), 1);
|
|
if (alreadyCancelled) {
|
|
return;
|
|
}
|
|
[cancelLoadLock lock];
|
|
dispatch_block_t cancelLoadLocal = cancelLoad;
|
|
cancelLoad = nil;
|
|
[cancelLoadLock unlock];
|
|
if (cancelLoadLocal) {
|
|
cancelLoadLocal();
|
|
}
|
|
};
|
|
|
|
__weak RCTImageLoader *weakSelf = self;
|
|
void (^completionHandler)(NSError *, id, id, BOOL, NSURLResponse *) = ^(NSError *error, id imageOrData, id imageMetadata, BOOL cacheResult, NSURLResponse *response) {
|
|
__typeof(self) strongSelf = weakSelf;
|
|
if (std::atomic_load(cancelled.get()) || !strongSelf) {
|
|
return;
|
|
}
|
|
|
|
if (!imageOrData || [imageOrData isKindOfClass:[UIImage class]]) {
|
|
[cancelLoadLock lock];
|
|
cancelLoad = nil;
|
|
[cancelLoadLock unlock];
|
|
completionBlock(error, imageOrData, imageMetadata);
|
|
return;
|
|
}
|
|
|
|
RCTImageLoaderCompletionBlock decodeCompletionHandler = ^(NSError *error_, UIImage *image) {
|
|
if (cacheResult && image) {
|
|
// Store decoded image in cache
|
|
[[strongSelf imageCache] addImageToCache:image
|
|
URL:imageURLRequest.URL.absoluteString
|
|
size:size
|
|
scale:scale
|
|
resizeMode:resizeMode
|
|
response:response];
|
|
}
|
|
[cancelLoadLock lock];
|
|
cancelLoad = nil;
|
|
[cancelLoadLock unlock];
|
|
completionBlock(error_, image, nil);
|
|
};
|
|
dispatch_block_t cancelLoadLocal = [strongSelf decodeImageData:imageOrData
|
|
size:size
|
|
scale:scale
|
|
clipped:clipped
|
|
resizeMode:resizeMode
|
|
completionBlock:decodeCompletionHandler];
|
|
[cancelLoadLock lock];
|
|
cancelLoad = cancelLoadLocal;
|
|
[cancelLoadLock unlock];
|
|
};
|
|
|
|
RCTImageURLLoaderRequest *loaderRequest = [self _loadImageOrDataWithURLRequest:imageURLRequest
|
|
size:size
|
|
scale:scale
|
|
resizeMode:resizeMode
|
|
priority:priority
|
|
attribution:attribution
|
|
progressBlock:progressBlock
|
|
partialLoadBlock:partialLoadBlock
|
|
completionBlock:completionHandler];
|
|
cancelLoad = loaderRequest.cancellationBlock;
|
|
return [[RCTImageURLLoaderRequest alloc] initWithRequestId:loaderRequest.requestId imageURL:imageURLRequest.URL cancellationBlock:cancellationBlock];
|
|
}
|
|
|
|
- (BOOL)shouldEnablePerfLoggingForRequestUrl:(NSURL *)url {
|
|
id<RCTImageURLLoader> loadHandler = [self imageURLLoaderForURL:url];
|
|
if ([loadHandler respondsToSelector:@selector(shouldEnablePerfLogging)]) {
|
|
return [(id<RCTImageURLLoaderWithAttribution>)loadHandler shouldEnablePerfLogging];
|
|
}
|
|
return NO;
|
|
}
|
|
|
|
- (void)trackURLImageVisibilityForRequest:(RCTImageURLLoaderRequest *)loaderRequest imageView:(UIView *)imageView
|
|
{
|
|
if (!loaderRequest || !imageView) {
|
|
return;
|
|
}
|
|
|
|
id<RCTImageURLLoader> loadHandler = [self imageURLLoaderForURL:loaderRequest.imageURL];
|
|
if ([loadHandler respondsToSelector:@selector(trackURLImageVisibilityForRequest:imageView:)]) {
|
|
[(id<RCTImageURLLoaderWithAttribution>)loadHandler trackURLImageVisibilityForRequest:loaderRequest imageView:imageView];
|
|
}
|
|
}
|
|
|
|
- (void)trackURLImageRequestDidDestroy:(RCTImageURLLoaderRequest *)loaderRequest
|
|
{
|
|
if (!loaderRequest) {
|
|
return;
|
|
}
|
|
|
|
id<RCTImageURLLoader> loadHandler = [self imageURLLoaderForURL:loaderRequest.imageURL];
|
|
if ([loadHandler respondsToSelector:@selector(trackURLImageRequestDidDestroy:)]) {
|
|
[(id<RCTImageURLLoaderWithAttribution>)loadHandler trackURLImageRequestDidDestroy:loaderRequest];
|
|
}
|
|
}
|
|
|
|
- (void)trackURLImageDidDestroy:(RCTImageURLLoaderRequest *)loaderRequest
|
|
{
|
|
if (!loaderRequest) {
|
|
return;
|
|
}
|
|
|
|
id<RCTImageURLLoader> loadHandler = [self imageURLLoaderForURL:loaderRequest.imageURL];
|
|
if ([loadHandler respondsToSelector:@selector(trackURLImageDidDestroy:)]) {
|
|
[(id<RCTImageURLLoaderWithAttribution>)loadHandler trackURLImageDidDestroy:loaderRequest];
|
|
}
|
|
}
|
|
|
|
#pragma mark - RCTImageLoaderProtocol 3/3
|
|
|
|
- (RCTImageLoaderCancellationBlock)decodeImageData:(NSData *)data
|
|
size:(CGSize)size
|
|
scale:(CGFloat)scale
|
|
clipped:(BOOL)clipped
|
|
resizeMode:(RCTResizeMode)resizeMode
|
|
completionBlock:(RCTImageLoaderCompletionBlock)completionBlock
|
|
{
|
|
if (data.length == 0) {
|
|
completionBlock(RCTErrorWithMessage(@"No image data"), nil);
|
|
return ^{};
|
|
}
|
|
|
|
auto cancelled = std::make_shared<std::atomic<int>>(0);
|
|
void (^completionHandler)(NSError *, UIImage *) = ^(NSError *error, UIImage *image) {
|
|
if (RCTIsMainQueue()) {
|
|
// Most loaders do not return on the main thread, so caller is probably not
|
|
// expecting it, and may do expensive post-processing in the callback
|
|
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
|
|
if (!std::atomic_load(cancelled.get())) {
|
|
completionBlock(error, clipped ? RCTResizeImageIfNeeded(image, size, scale, resizeMode) : image);
|
|
}
|
|
});
|
|
} else if (!std::atomic_load(cancelled.get())) {
|
|
completionBlock(error, clipped ? RCTResizeImageIfNeeded(image, size, scale, resizeMode) : image);
|
|
}
|
|
};
|
|
|
|
id<RCTImageDataDecoder> imageDecoder = [self imageDataDecoderForData:data];
|
|
if (imageDecoder) {
|
|
return [imageDecoder decodeImageData:data
|
|
size:size
|
|
scale:scale
|
|
resizeMode:resizeMode
|
|
completionHandler:completionHandler] ?: ^{};
|
|
} else {
|
|
dispatch_block_t decodeBlock = ^{
|
|
// Calculate the size, in bytes, that the decompressed image will require
|
|
NSInteger decodedImageBytes = (size.width * scale) * (size.height * scale) * 4;
|
|
|
|
// Mark these bytes as in-use
|
|
self->_activeBytes += decodedImageBytes;
|
|
|
|
// Do actual decompression on a concurrent background queue
|
|
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
|
|
if (!std::atomic_load(cancelled.get())) {
|
|
|
|
// Decompress the image data (this may be CPU and memory intensive)
|
|
UIImage *image = RCTDecodeImageWithData(data, size, scale, resizeMode);
|
|
|
|
#if RCT_DEV
|
|
CGSize imagePixelSize = RCTSizeInPixels(image.size, image.scale);
|
|
CGSize screenPixelSize = RCTSizeInPixels(RCTScreenSize(), RCTScreenScale());
|
|
if (imagePixelSize.width * imagePixelSize.height >
|
|
screenPixelSize.width * screenPixelSize.height) {
|
|
RCTLogInfo(@"[PERF ASSETS] Loading image at size %@, which is larger "
|
|
"than the screen size %@", NSStringFromCGSize(imagePixelSize),
|
|
NSStringFromCGSize(screenPixelSize));
|
|
}
|
|
#endif
|
|
|
|
if (image) {
|
|
completionHandler(nil, image);
|
|
} else {
|
|
NSString *errorMessage = [NSString stringWithFormat:@"Error decoding image data <NSData %p; %tu bytes>", data, data.length];
|
|
NSError *finalError = RCTErrorWithMessage(errorMessage);
|
|
completionHandler(finalError, nil);
|
|
}
|
|
}
|
|
|
|
// We're no longer retaining the uncompressed data, so now we'll mark
|
|
// the decoding as complete so that the loading task queue can resume.
|
|
dispatch_async(self->_URLRequestQueue, ^{
|
|
self->_scheduledDecodes--;
|
|
self->_activeBytes -= decodedImageBytes;
|
|
[self dequeueTasks];
|
|
});
|
|
});
|
|
};
|
|
|
|
if (!_URLRequestQueue) {
|
|
[self setUp];
|
|
}
|
|
dispatch_async(_URLRequestQueue, ^{
|
|
// The decode operation retains the compressed image data until it's
|
|
// complete, so we'll mark it as having started, in order to block
|
|
// further image loads from happening until we're done with the data.
|
|
self->_scheduledDecodes++;
|
|
|
|
if (!self->_pendingDecodes) {
|
|
self->_pendingDecodes = [NSMutableArray new];
|
|
}
|
|
NSInteger activeDecodes = self->_scheduledDecodes - self->_pendingDecodes.count - 1;
|
|
if (activeDecodes == 0 || (self->_activeBytes <= self->_maxConcurrentDecodingBytes &&
|
|
activeDecodes <= self->_maxConcurrentDecodingTasks)) {
|
|
decodeBlock();
|
|
} else {
|
|
[self->_pendingDecodes addObject:decodeBlock];
|
|
}
|
|
});
|
|
|
|
return ^{
|
|
std::atomic_store(cancelled.get(), 1);
|
|
};
|
|
}
|
|
}
|
|
|
|
- (RCTImageLoaderCancellationBlock)getImageSizeForURLRequest:(NSURLRequest *)imageURLRequest
|
|
block:(void(^)(NSError *error, CGSize size))callback
|
|
{
|
|
void (^completion)(NSError *, id, id, BOOL, NSURLResponse *) = ^(NSError *error, id imageOrData, id imageMetadata, BOOL cacheResult, NSURLResponse *response) {
|
|
CGSize size;
|
|
if ([imageOrData isKindOfClass:[NSData class]]) {
|
|
NSDictionary *meta = RCTGetImageMetadata(imageOrData);
|
|
|
|
NSInteger imageOrientation = [meta[(id)kCGImagePropertyOrientation] integerValue];
|
|
switch (imageOrientation) {
|
|
case kCGImagePropertyOrientationLeft:
|
|
case kCGImagePropertyOrientationRight:
|
|
case kCGImagePropertyOrientationLeftMirrored:
|
|
case kCGImagePropertyOrientationRightMirrored:
|
|
// swap width and height
|
|
size = (CGSize){
|
|
[meta[(id)kCGImagePropertyPixelHeight] floatValue],
|
|
[meta[(id)kCGImagePropertyPixelWidth] floatValue],
|
|
};
|
|
break;
|
|
case kCGImagePropertyOrientationUp:
|
|
case kCGImagePropertyOrientationDown:
|
|
case kCGImagePropertyOrientationUpMirrored:
|
|
case kCGImagePropertyOrientationDownMirrored:
|
|
default:
|
|
size = (CGSize){
|
|
[meta[(id)kCGImagePropertyPixelWidth] floatValue],
|
|
[meta[(id)kCGImagePropertyPixelHeight] floatValue],
|
|
};
|
|
break;
|
|
}
|
|
} else {
|
|
UIImage *image = imageOrData;
|
|
size = (CGSize){
|
|
image.size.width * image.scale,
|
|
image.size.height * image.scale,
|
|
};
|
|
}
|
|
callback(error, size);
|
|
};
|
|
|
|
RCTImageURLLoaderRequest *loaderRequest = [self _loadImageOrDataWithURLRequest:imageURLRequest
|
|
size:CGSizeZero
|
|
scale:1
|
|
resizeMode:RCTResizeModeStretch
|
|
priority: RCTImageLoaderPriorityImmediate
|
|
attribution:{}
|
|
progressBlock:NULL
|
|
partialLoadBlock:NULL
|
|
completionBlock:completion];
|
|
return loaderRequest.cancellationBlock;
|
|
}
|
|
|
|
- (NSDictionary *)getImageCacheStatus:(NSArray *)requests
|
|
{
|
|
NSMutableDictionary *results = [NSMutableDictionary dictionary];
|
|
for (id request in requests) {
|
|
NSURLRequest *urlRequest = [RCTConvert NSURLRequest:request];
|
|
if (urlRequest) {
|
|
NSCachedURLResponse *cachedResponse = [NSURLCache.sharedURLCache cachedResponseForRequest:urlRequest];
|
|
if (cachedResponse) {
|
|
if (cachedResponse.storagePolicy == NSURLCacheStorageAllowedInMemoryOnly) {
|
|
results[urlRequest.URL.absoluteString] = @"memory";
|
|
} else if (NSURLCache.sharedURLCache.currentMemoryUsage == 0) {
|
|
// We can't check whether the file is cached on disk or memory.
|
|
// However, if currentMemoryUsage is disabled, it must be read from disk.
|
|
results[urlRequest.URL.absoluteString] = @"disk";
|
|
} else {
|
|
results[urlRequest.URL.absoluteString] = @"disk/memory";
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return results;
|
|
}
|
|
|
|
#pragma mark - RCTURLRequestHandler
|
|
|
|
- (BOOL)canHandleRequest:(NSURLRequest *)request
|
|
{
|
|
NSURL *requestURL = request.URL;
|
|
|
|
// If the data being loaded is a video, return NO
|
|
// Even better may be to implement this on the RCTImageURLLoader that would try to load it,
|
|
// but we'd have to run the logic both in RCTPhotoLibraryImageLoader and
|
|
// RCTAssetsLibraryRequestHandler. Once we drop iOS7 though, we'd drop
|
|
// RCTAssetsLibraryRequestHandler and can move it there.
|
|
static NSRegularExpression *videoRegex;
|
|
static dispatch_once_t onceToken;
|
|
dispatch_once(&onceToken, ^{
|
|
NSError *error = nil;
|
|
videoRegex = [NSRegularExpression regularExpressionWithPattern:@"(?:&|^)ext=MOV(?:&|$)"
|
|
options:NSRegularExpressionCaseInsensitive
|
|
error:&error];
|
|
if (error) {
|
|
RCTLogError(@"%@", error);
|
|
}
|
|
});
|
|
|
|
NSString *query = requestURL.query;
|
|
if (
|
|
query != nil &&
|
|
[videoRegex firstMatchInString:query
|
|
options:0
|
|
range:NSMakeRange(0, query.length)]
|
|
) {
|
|
return NO;
|
|
}
|
|
|
|
for (id<RCTImageURLLoader> loader in _loaders) {
|
|
// Don't use RCTImageURLLoader protocol for modules that already conform to
|
|
// RCTURLRequestHandler as it's inefficient to decode an image and then
|
|
// convert it back into data
|
|
if (![loader conformsToProtocol:@protocol(RCTURLRequestHandler)] &&
|
|
[loader canLoadImageURL:requestURL]) {
|
|
return YES;
|
|
}
|
|
}
|
|
|
|
return NO;
|
|
}
|
|
|
|
- (id)sendRequest:(NSURLRequest *)request withDelegate:(id<RCTURLRequestDelegate>)delegate
|
|
{
|
|
__block RCTImageLoaderCancellationBlock requestToken;
|
|
requestToken = [self loadImageWithURLRequest:request callback:^(NSError *error, UIImage *image) {
|
|
if (error) {
|
|
[delegate URLRequest:requestToken didCompleteWithError:error];
|
|
return;
|
|
}
|
|
|
|
NSString *mimeType = nil;
|
|
NSData *imageData = nil;
|
|
if (RCTImageHasAlpha(image.CGImage)) {
|
|
mimeType = @"image/png";
|
|
imageData = UIImagePNGRepresentation(image);
|
|
} else {
|
|
mimeType = @"image/jpeg";
|
|
imageData = UIImageJPEGRepresentation(image, 1.0);
|
|
}
|
|
|
|
NSURLResponse *response = [[NSURLResponse alloc] initWithURL:request.URL
|
|
MIMEType:mimeType
|
|
expectedContentLength:imageData.length
|
|
textEncodingName:nil];
|
|
|
|
[delegate URLRequest:requestToken didReceiveResponse:response];
|
|
[delegate URLRequest:requestToken didReceiveData:imageData];
|
|
[delegate URLRequest:requestToken didCompleteWithError:nil];
|
|
}];
|
|
|
|
return requestToken;
|
|
}
|
|
|
|
- (void)cancelRequest:(id)requestToken
|
|
{
|
|
if (requestToken) {
|
|
((RCTImageLoaderCancellationBlock)requestToken)();
|
|
}
|
|
}
|
|
|
|
- (std::shared_ptr<facebook::react::TurboModule>)getTurboModule:(const facebook::react::ObjCTurboModule::InitParams &)params
|
|
{
|
|
return std::make_shared<facebook::react::NativeImageLoaderIOSSpecJSI>(params);
|
|
}
|
|
|
|
RCT_EXPORT_METHOD(getSize:(NSString *)uri resolve:(RCTPromiseResolveBlock)resolve reject:(RCTPromiseRejectBlock)reject)
|
|
{
|
|
NSURLRequest *request = [RCTConvert NSURLRequest:uri];
|
|
[self getImageSizeForURLRequest:request
|
|
block:^(NSError *error, CGSize size) {
|
|
if (error) {
|
|
reject(
|
|
@"E_GET_SIZE_FAILURE",
|
|
[NSString stringWithFormat: @"Failed to getSize of %@", uri],
|
|
error);
|
|
} else {
|
|
resolve(@[@(size.width), @(size.height)]);
|
|
}
|
|
}];
|
|
}
|
|
|
|
RCT_EXPORT_METHOD(getSizeWithHeaders:(NSString *)uri
|
|
headers:(NSDictionary *)headers
|
|
resolve:(RCTPromiseResolveBlock)resolve
|
|
reject:(RCTPromiseRejectBlock)reject)
|
|
{
|
|
NSURL *URL = [RCTConvert NSURL:uri];
|
|
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:URL];
|
|
[headers enumerateKeysAndObjectsUsingBlock:^(NSString *key, id value, BOOL *stop) {
|
|
[request addValue:[RCTConvert NSString:value] forHTTPHeaderField:key];
|
|
}];
|
|
[self getImageSizeForURLRequest:request
|
|
block:^(NSError *error, CGSize size) {
|
|
if (error) {
|
|
reject(@"E_GET_SIZE_FAILURE", nil, error);
|
|
return;
|
|
}
|
|
resolve(@{@"width":@(size.width),@"height":@(size.height)});
|
|
}];
|
|
}
|
|
|
|
RCT_EXPORT_METHOD(prefetchImage:(NSString *)uri
|
|
resolve:(RCTPromiseResolveBlock)resolve
|
|
reject:(RCTPromiseRejectBlock)reject)
|
|
{
|
|
[self prefetchImageWithMetadata:uri queryRootName:nil rootTag:0 resolve:resolve reject:reject];
|
|
}
|
|
|
|
RCT_EXPORT_METHOD(prefetchImageWithMetadata:(NSString *)uri
|
|
queryRootName:(NSString *)queryRootName
|
|
rootTag:(double)rootTag
|
|
resolve:(RCTPromiseResolveBlock)resolve
|
|
reject:(RCTPromiseRejectBlock)reject)
|
|
{
|
|
NSURLRequest *request = [RCTConvert NSURLRequest:uri];
|
|
[self loadImageWithURLRequest:request
|
|
size:CGSizeZero
|
|
scale:1
|
|
clipped:YES
|
|
resizeMode:RCTResizeModeStretch
|
|
priority:RCTImageLoaderPriorityPrefetch
|
|
attribution:{
|
|
.queryRootName = queryRootName ? [queryRootName UTF8String] : "",
|
|
.surfaceId = (int)rootTag,
|
|
}
|
|
progressBlock:nil
|
|
partialLoadBlock:nil
|
|
completionBlock:^(NSError *error, UIImage *image, id completionMetadata) {
|
|
if (error) {
|
|
reject(@"E_PREFETCH_FAILURE", nil, error);
|
|
return;
|
|
}
|
|
resolve(@YES);
|
|
}];
|
|
}
|
|
|
|
RCT_EXPORT_METHOD(queryCache:(NSArray *)uris
|
|
resolve:(RCTPromiseResolveBlock)resolve
|
|
reject:(RCTPromiseRejectBlock)reject)
|
|
{
|
|
resolve([self getImageCacheStatus:uris]);
|
|
}
|
|
@end
|
|
|
|
/**
|
|
* DEPRECATED!! DO NOT USE
|
|
* Instead use `[_bridge moduleForClass:[RCTImageLoader class]]`
|
|
*/
|
|
@implementation RCTBridge (RCTImageLoader)
|
|
|
|
- (RCTImageLoader *)imageLoader
|
|
{
|
|
RCTLogWarn(@"Calling bridge.imageLoader is deprecated and will not work in newer versions of RN. Please update to the "
|
|
"moduleForClass API or turboModuleRegistry API.");
|
|
return [self moduleForClass:[RCTImageLoader class]];
|
|
}
|
|
|
|
@end
|
|
|
|
Class RCTImageLoaderCls(void)
|
|
{
|
|
return RCTImageLoader.class;
|
|
}
|