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Refactory the `sd_flippedImageWithHorizontal` with the UIGraphicsRenderer, do not always need ARGB8888

This commit is contained in:
DreamPiggy 2019-12-15 20:20:38 +08:00
parent 48a7b7f943
commit 1e778f0fe6
1 changed files with 18 additions and 30 deletions
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48
SDWebImage/Core/UIImage+Transform.m
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@ -280,37 +280,25 @@ static inline UIColor * SDGetColorFromPixel(Pixel_8888 pixel, CGBitmapInfo bitma
- (nullable UIImage *)sd_flippedImageWithHorizontal:(BOOL)horizontal vertical:(BOOL)vertical {
if (!self.CGImage) return nil;
size_t width = (size_t)CGImageGetWidth(self.CGImage);
size_t height = (size_t)CGImageGetHeight(self.CGImage);
size_t bytesPerRow = width * 4;
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
CGContextRef context = CGBitmapContextCreate(NULL, width, height, 8, bytesPerRow, colorSpace, kCGBitmapByteOrderDefault | kCGImageAlphaPremultipliedFirst);
CGColorSpaceRelease(colorSpace);
if (!context) return nil;
size_t width = self.size.width;
size_t height = self.size.height;
CGContextDrawImage(context, CGRectMake(0, 0, width, height), self.CGImage);
UInt8 *data = (UInt8 *)CGBitmapContextGetData(context);
if (!data) {
CGContextRelease(context);
return nil;
}
vImage_Buffer src = { data, height, width, bytesPerRow };
vImage_Buffer dest = { data, height, width, bytesPerRow };
if (vertical) {
vImageVerticalReflect_ARGB8888(&src, &dest, kvImageBackgroundColorFill);
}
if (horizontal) {
vImageHorizontalReflect_ARGB8888(&src, &dest, kvImageBackgroundColorFill);
}
CGImageRef imgRef = CGBitmapContextCreateImage(context);
CGContextRelease(context);
#if SD_UIKIT || SD_WATCH
UIImage *img = [UIImage imageWithCGImage:imgRef scale:self.scale orientation:self.imageOrientation];
#else
UIImage *img = [[UIImage alloc] initWithCGImage:imgRef scale:self.scale orientation:kCGImagePropertyOrientationUp];
#endif
CGImageRelease(imgRef);
return img;
SDGraphicsImageRendererFormat *format = [[SDGraphicsImageRendererFormat alloc] init];
format.scale = self.scale;
SDGraphicsImageRenderer *renderer = [[SDGraphicsImageRenderer alloc] initWithSize:self.size format:format];
UIImage *image = [renderer imageWithActions:^(CGContextRef _Nonnull context) {
// Use UIKit coordinate system
if (horizontal) {
CGAffineTransform flipHorizontal = CGAffineTransformMake(-1, 0, 0, 1, width, 0);
CGContextConcatCTM(context, flipHorizontal);
}
if (vertical) {
CGAffineTransform flipVertical = CGAffineTransformMake(1, 0, 0, -1, 0, height);
CGContextConcatCTM(context, flipVertical);
}
[self drawInRect:CGRectMake(0, 0, width, height)];
}];
return image;
}
#pragma mark - Image Blending