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// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
import UIKit
extension CGRect {
public init(width: CGFloat, height: CGFloat) {
self.init(x: 0, y: 0, width: width, height: height)
}
public init(size: CGSize) {
self.init(origin: .zero, size: size)
}
}
extension Data {
public var isGIF: Bool {
return [0x47, 0x49, 0x46].elementsEqual(prefix(3))
}
}
extension UIImage {
public static func createWithColor(_ size: CGSize, color: UIColor) -> UIImage {
UIGraphicsImageRenderer(size: size).image { (ctx) in
color.setFill()
ctx.fill(CGRect(size: size))
}
}
public func createScaled(_ size: CGSize) -> UIImage {
UIGraphicsImageRenderer(size: size).image { (ctx) in
draw(in: CGRect(size: size))
}
}
public static func templateImageNamed(_ name: String) -> UIImage? {
return UIImage(named: name)?.withRenderingMode(.alwaysTemplate)
}
// Uses compositor blending to apply color to an image.
public func tinted(withColor: UIColor) -> UIImage {
let img2 = UIImage.createWithColor(size, color: withColor)
let rect = CGRect(x: 0, y: 0, width: size.width, height: size.height)
let renderer = UIGraphicsImageRenderer(size: size)
let result = renderer.image { ctx in
img2.draw(in: rect, blendMode: .normal, alpha: 1)
draw(in: rect, blendMode: .destinationIn, alpha: 1)
}
return result
}
}