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Add SDImageCoderWebImageContext coder option, which allow custom coder plugin, to receive the context option from top-level API (Cache/Downloader/View Category)

This commit is contained in:
DreamPiggy 2018-07-26 16:43:09 +08:00
parent 919751f2de
commit ef3123984f
4 changed files with 32 additions and 3 deletions
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8
SDWebImage/SDImageCacheDefine.m
View File

@ -33,7 +33,13 @@ UIImage * _Nullable SDImageCacheDecodeImageData(NSData * _Nonnull imageData, NSS
}
}
if (!image) {
image = [[SDImageCodersManager sharedManager] decodedImageWithData:imageData options:@{SDImageCoderDecodeFirstFrameOnly : @(decodeFirstFrame), SDImageCoderDecodeScaleFactor : @(scale)}];
SDImageCoderOptions *options = @{SDImageCoderDecodeFirstFrameOnly : @(decodeFirstFrame), SDImageCoderDecodeScaleFactor : @(scale)};
if (context) {
SDImageCoderMutableOptions *mutableOptions = [options mutableCopy];
[mutableOptions setValue:context forKey:SDImageCoderWebImageContext];
options = [mutableOptions copy];
}
image = [[SDImageCodersManager sharedManager] decodedImageWithData:imageData options:options];
}
if (image) {
BOOL shouldDecode = (options & SDWebImageAvoidDecodeImage) == 0;

9
SDWebImage/SDImageCoder.h
View File

@ -12,6 +12,7 @@
typedef NSString * SDImageCoderOption NS_STRING_ENUM;
typedef NSDictionary<SDImageCoderOption, id> SDImageCoderOptions;
typedef NSMutableDictionary<SDImageCoderOption, id> SDImageCoderMutableOptions;
#pragma mark - Coder Options
// These options are for image decoding
@ -38,6 +39,14 @@ FOUNDATION_EXPORT SDImageCoderOption _Nonnull const SDImageCoderEncodeFirstFrame
*/
FOUNDATION_EXPORT SDImageCoderOption _Nonnull const SDImageCoderEncodeCompressionQuality;
/**
A SDWebImageContext object which hold the original context options from top-level API. (SDWebImageContext)
This option is ignored for all built-in coders and take no effect.
But this may be useful for some custom coders, because some business logic may dependent on things other than image or image data inforamtion only.
See `SDWebImageContext` for more detailed information.
*/
FOUNDATION_EXPORT SDImageCoderOption _Nonnull const SDImageCoderWebImageContext;
#pragma mark - Coder
/**
This is the image coder protocol to provide custom image decoding/encoding.

2
SDWebImage/SDImageCoder.m
View File

@ -13,3 +13,5 @@ SDImageCoderOption const SDImageCoderDecodeScaleFactor = @"decodeScaleFactor";
SDImageCoderOption const SDImageCoderEncodeFirstFrameOnly = @"encodeFirstFrameOnly";
SDImageCoderOption const SDImageCoderEncodeCompressionQuality = @"encodeCompressionQuality";
SDImageCoderOption const SDImageCoderWebImageContext = @"webImageContext";

16
SDWebImage/SDImageLoader.m
View File

@ -47,7 +47,13 @@ UIImage * _Nullable SDImageLoaderDecodeImageData(NSData * _Nonnull imageData, NS
}
}
if (!image) {
image = [[SDImageCodersManager sharedManager] decodedImageWithData:imageData options:@{SDImageCoderDecodeFirstFrameOnly : @(decodeFirstFrame), SDImageCoderDecodeScaleFactor : @(scale)}];
SDImageCoderOptions *options = @{SDImageCoderDecodeFirstFrameOnly : @(decodeFirstFrame), SDImageCoderDecodeScaleFactor : @(scale)};
if (context) {
SDImageCoderMutableOptions *mutableOptions = [options mutableCopy];
[mutableOptions setValue:context forKey:SDImageCoderWebImageContext];
options = [mutableOptions copy];
}
image = [[SDImageCodersManager sharedManager] decodedImageWithData:imageData options:options];
}
if (image) {
BOOL shouldDecode = (options & SDWebImageAvoidDecodeImage) == 0;
@ -119,7 +125,13 @@ UIImage * _Nullable SDImageLoaderDecodeProgressiveImageData(NSData * _Nonnull im
}
}
if (!image) {
image = [progressiveCoder incrementalDecodedImageWithOptions:@{SDImageCoderDecodeFirstFrameOnly : @(decodeFirstFrame), SDImageCoderDecodeScaleFactor : @(scale)}];
SDImageCoderOptions *options = @{SDImageCoderDecodeFirstFrameOnly : @(decodeFirstFrame), SDImageCoderDecodeScaleFactor : @(scale)};
if (context) {
SDImageCoderMutableOptions *mutableOptions = [options mutableCopy];
[mutableOptions setValue:context forKey:SDImageCoderWebImageContext];
options = [mutableOptions copy];
}
image = [progressiveCoder incrementalDecodedImageWithOptions:options];
}
if (image) {
BOOL shouldDecode = (options & SDWebImageAvoidDecodeImage) == 0;