NetNewsWire/iOS/Extensions/UIImage-Extensions.swift

//
//  UIImage-Extensions.swift
//  NetNewsWire
//
//  Created by Maurice Parker on 4/18/19.
//  Copyright © 2019 Ranchero Software. All rights reserved.
//

import UIKit

extension UIImage {
	
	func maskWithColor(color: UIColor) -> UIImage? {
		
		let maskImage = cgImage!
		
		let width = size.width
		let height = size.height
		let bounds = CGRect(x: 0, y: 0, width: width, height: height)
		
		let colorSpace = CGColorSpaceCreateDeviceRGB()
		let bitmapInfo = CGBitmapInfo(rawValue: CGImageAlphaInfo.premultipliedLast.rawValue)
		let context = CGContext(data: nil, width: Int(width), height: Int(height), bitsPerComponent: 8, bytesPerRow: 0, space: colorSpace, bitmapInfo: bitmapInfo.rawValue)!
		
		context.clip(to: bounds, mask: maskImage)
		context.setFillColor(color.cgColor)
		context.fill(bounds)
		
		if let cgImage = context.makeImage() {
			let coloredImage = UIImage(cgImage: cgImage)
			return coloredImage
		} else {
			return nil
		}
		
	}
	
}