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Add support for disabling progressive image rendering

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Differential Revision: https://phabricator.pinadmin.com/D89742
This commit is contained in:
Garrett Moon
2016-05-09 15:00:44 -07:00
parent 62a853b3e9
commit c0eb6cac09
4 changed files with 92 additions and 26 deletions
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27
AsyncDisplayKit/ASNetworkImageNode.mm
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@@ -45,6 +45,8 @@ static const CGSize kMinReleaseImageOnBackgroundSize = {20.0, 20.0};
BOOL _delegateSupportsDidStartFetchingData;
BOOL _delegateSupportsDidFailWithError;
BOOL _delegateSupportsImageNodeDidFinishDecoding;
BOOL _shouldRenderProgressImages;
//set on init only
BOOL _downloaderSupportsNewProtocol;
@@ -83,6 +85,7 @@ static const CGSize kMinReleaseImageOnBackgroundSize = {20.0, 20.0};
_cacheSupportsSynchronousFetch = [cache respondsToSelector:@selector(synchronouslyFetchedCachedImageWithURL:)];
_shouldCacheImage = YES;
_shouldRenderProgressImages = YES;
self.shouldBypassEnsureDisplay = YES;
return self;
@@ -218,6 +221,26 @@ static const CGSize kMinReleaseImageOnBackgroundSize = {20.0, 20.0};
return _delegate;
}
- (void)setShouldRenderProgressImages:(BOOL)shouldRenderProgressImages
{
ASDN::MutexLocker l(_lock);
if (shouldRenderProgressImages == _shouldRenderProgressImages) {
return;
}
_shouldRenderProgressImages = shouldRenderProgressImages;
ASDN::MutexUnlocker u(_lock);
[self _updateProgressImageBlockOnDownloaderIfNeeded];
}
- (BOOL)shouldRenderProgressImages
{
ASDN::MutexLocker l(_lock);
return _shouldRenderProgressImages;
}
- (BOOL)placeholderShouldPersist
{
ASDN::MutexLocker l(_lock);
@@ -309,6 +332,8 @@ static const CGSize kMinReleaseImageOnBackgroundSize = {20.0, 20.0};
*/
- (void)_updateProgressImageBlockOnDownloaderIfNeeded
{
BOOL shouldRenderProgressImages = self.shouldRenderProgressImages;
// Read our interface state before locking so that we don't lock super while holding our lock.
ASInterfaceState interfaceState = self.interfaceState;
ASDN::MutexLocker l(_lock);
@@ -318,7 +343,7 @@ static const CGSize kMinReleaseImageOnBackgroundSize = {20.0, 20.0};
}
ASImageDownloaderProgressImage progress = nil;
if (ASInterfaceStateIncludesVisible(interfaceState)) {
if (shouldRenderProgressImages && ASInterfaceStateIncludesVisible(interfaceState)) {
__weak __typeof__(self) weakSelf = self;
progress = ^(UIImage * _Nonnull progressImage, CGFloat progress, id _Nullable downloadIdentifier) {
__typeof__(self) strongSelf = weakSelf;