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Fix the PDF image without thumbnailPixelSize will result huge bitmap size, now fixed into 72 DPI matching PDFKit

This commit is contained in:
DreamPiggy 2022-07-13 16:04:29 +08:00
parent c4b8660bb3
commit f91d35ef8d
1 changed files with 2 additions and 13 deletions
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15
SDWebImage/Core/SDImageIOAnimatedCoder.m
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@ -215,19 +215,8 @@ static NSString * kSDCGImageDestinationRequestedFileSize = @"kCGImageDestination
BOOL createFullImage = thumbnailSize.width == 0 || thumbnailSize.height == 0 || pixelWidth == 0 || pixelHeight == 0 || (pixelWidth <= thumbnailSize.width && pixelHeight <= thumbnailSize.height);
if (createFullImage) {
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;
// Use 72 DPI by default, matching Apple's PDFKit behavior
NSUInteger rasterizationDPI = 72;
decodingOptions[kSDCGImageSourceRasterizationDPI] = @(rasterizationDPI);
}
imageRef = CGImageSourceCreateImageAtIndex(source, index, (__bridge CFDictionaryRef)[decodingOptions copy]);