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iOSDigital/invertedImageWithColor.m

Created April 1, 2017 17:44
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invertedImageWithColor
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invertedImageWithColor.m
-(UIImage *)invertedImageWithColor:(UIColor*)color {
UIGraphicsBeginImageContextWithOptions(self.size, NO, 0.0);
CGContextRef context = UIGraphicsGetCurrentContext();
CGRect contextRect = CGContextGetClipBoundingBox(context);
CGContextSetFillColorWithColor(context, [color CGColor]);
CGContextFillRect(context, contextRect);
[self drawInRect:contextRect blendMode:kCGBlendModeDestinationOut alpha:1.0];
UIImage *invertedImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return invertedImage;
}
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