mirrors
/
SDWebImage
mirror of https://github.com/SDWebImage/SDWebImage.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Added the default ImageIO coder with PDF support, use the screen size if user does not provide any explict pixel size

This commit is contained in:
DreamPiggy 2020-01-30 15:11:42 +08:00
parent 08aab785db
commit 96b0a2e031
1 changed files with 39 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

44
SDWebImage/Core/SDImageIOAnimatedCoder.m
View File

@ -14,6 +14,9 @@
#import "SDAnimatedImageRep.h"
#import "UIImage+ForceDecode.h"
// Specify DPI for vector format in CGImageSource, like PDF
static NSString * kSDCGImageSourceRasterizationDPI = @"kCGImageSourceRasterizationDPI";
@interface SDImageIOCoderFrame : NSObject
@property (nonatomic, assign) NSUInteger index; // Frame index (zero based)
@ -158,9 +161,33 @@
exifOrientation = kCGImagePropertyOrientationUp;
}
CFStringRef uttype = CGImageSourceGetType(source);
// Check vector format
BOOL isVector = NO;
if ([NSData sd_imageFormatFromUTType:uttype] == SDImageFormatPDF) {
isVector = YES;
}
CGImageRef imageRef;
if (thumbnailSize.width == 0 || thumbnailSize.height == 0 || (pixelWidth <= thumbnailSize.width && pixelHeight <= thumbnailSize.height)) {
imageRef = CGImageSourceCreateImageAtIndex(source, index, NULL);
if (thumbnailSize.width == 0 || thumbnailSize.height == 0 || pixelWidth == 0 || pixelHeight == 0 || (pixelWidth <= thumbnailSize.width && pixelHeight <= thumbnailSize.height)) {
NSDictionary *options;
if (isVector) {
if (thumbnailSize.width == 0 || thumbnailSize.height == 0) {
// Provide the default pixel count for vector images, simply just use the screen size
#if SD_WATCH
thumbnailSize = WKInterfaceDevice.currentDevice.screenBounds.size;
#elif SD_UIKIT
thumbnailSize = UIScreen.mainScreen.bounds.size;
#elif SD_MAC
thumbnailSize = NSScreen.mainScreen.frame.size;
#endif
}
CGFloat maxPixelSize = MAX(thumbnailSize.width, thumbnailSize.height);
NSUInteger DPIPerPixel = 2;
NSUInteger rasterizationDPI = maxPixelSize * DPIPerPixel;
options = @{kSDCGImageSourceRasterizationDPI : @(rasterizationDPI)};
}
imageRef = CGImageSourceCreateImageAtIndex(source, index, (__bridge CFDictionaryRef)options);
} else {
NSMutableDictionary *thumbnailOptions = [NSMutableDictionary dictionary];
thumbnailOptions[(__bridge NSString *)kCGImageSourceCreateThumbnailWithTransform] = @(preserveAspectRatio);
@ -179,21 +206,22 @@
thumbnailOptions[(__bridge NSString *)kCGImageSourceThumbnailMaxPixelSize] = @(maxPixelSize);
thumbnailOptions[(__bridge NSString *)kCGImageSourceCreateThumbnailFromImageIfAbsent] = @(YES);
imageRef = CGImageSourceCreateThumbnailAtIndex(source, index, (__bridge CFDictionaryRef)thumbnailOptions);
}
if (!imageRef) {
return nil;
}
if (thumbnailSize.width > 0 && thumbnailSize.height > 0) {
if (preserveAspectRatio) {
// kCGImageSourceCreateThumbnailWithTransform will apply EXIF transform as well, we should not apply twice
exifOrientation = kCGImagePropertyOrientationUp;
} else {
// `CGImageSourceCreateThumbnailAtIndex` take only pixel dimension, if not `preserveAspectRatio`, we should manual scale to the target size
if (imageRef) {
CGImageRef scaledImageRef = [SDImageCoderHelper CGImageCreateScaled:imageRef size:thumbnailSize];
CGImageRelease(imageRef);
imageRef = scaledImageRef;
}
}
}
if (!imageRef) {
return nil;
}
#if SD_UIKIT || SD_WATCH
UIImageOrientation imageOrientation = [SDImageCoderHelper imageOrientationFromEXIFOrientation:exifOrientation];
@ -363,7 +391,7 @@
if (scaleFactor != nil) {
scale = MAX([scaleFactor doubleValue], 1);
}
image = [SDImageIOAnimatedCoder createFrameAtIndex:0 source:_imageSource scale:scale preserveAspectRatio:_preserveAspectRatio thumbnailSize:_thumbnailSize];
image = [self.class createFrameAtIndex:0 source:_imageSource scale:scale preserveAspectRatio:_preserveAspectRatio thumbnailSize:_thumbnailSize];
if (image) {
image.sd_imageFormat = self.class.imageFormat;
}