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Swift UIImage extension for tinting images
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/** | |
Usage: | |
let originalImage = UIImage(named: "cat") | |
let tintedImage = originalImage.tintWithColor(UIColor(red: 0.9, green: 0.7, blue: 0.4, alpha: 1.0)) | |
*/ | |
extension UIImage { | |
func tintWithColor(color:UIColor)->UIImage { | |
UIGraphicsBeginImageContext(self.size) | |
let context = UIGraphicsGetCurrentContext() | |
// flip the image | |
CGContextScaleCTM(context, 1.0, -1.0) | |
CGContextTranslateCTM(context, 0.0, -self.size.height) | |
// multiply blend mode | |
CGContextSetBlendMode(context, kCGBlendModeMultiply) | |
let rect = CGRectMake(0, 0, self.size.width, self.size.height) | |
CGContextClipToMask(context, rect, self.CGImage) | |
color.setFill() | |
CGContextFillRect(context, rect) | |
// create uiimage | |
let newImage = UIGraphicsGetImageFromCurrentImageContext() | |
UIGraphicsEndImageContext() | |
return newImage | |
} | |
} | |
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