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UIImage tint with UIColor in Swift
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extension UIImage | |
{ | |
func tint(color: UIColor, blendMode: CGBlendMode) -> UIImage | |
{ | |
let drawRect = CGRectMake(0.0, 0.0, size.width, size.height) | |
UIGraphicsBeginImageContextWithOptions(size, false, scale) | |
let context = UIGraphicsGetCurrentContext() | |
CGContextClipToMask(context, drawRect, CGImage) | |
color.setFill() | |
UIRectFill(drawRect) | |
drawInRect(drawRect, blendMode: blendMode, alpha: 1.0) | |
let tintedImage = UIGraphicsGetImageFromCurrentImageContext() | |
UIGraphicsEndImageContext() | |
return tintedImage | |
} | |
} |
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func tint(image: UIImage, color: UIColor) -> UIImage | |
{ | |
let ciImage = CIImage(image: image) | |
let filter = CIFilter(name: "CIMultiplyCompositing") | |
let colorFilter = CIFilter(name: "CIConstantColorGenerator") | |
let ciColor = CIColor(color: color) | |
colorFilter.setValue(ciColor, forKey: kCIInputColorKey) | |
let colorImage = colorFilter.outputImage | |
filter.setValue(colorImage, forKey: kCIInputImageKey) | |
filter.setValue(ciImage, forKey: kCIInputBackgroundImageKey) | |
return UIImage(CIImage: filter.outputImage)! | |
} |
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