CODEWITHSUNDEEP
swiftuitableviewuicolorcgcolor
Antonio A. Chavez
Antonio A. Chavez

Reputation: 1026

How to convert Color Literal to cgColor in the Swift?

var CodeBackground = #colorLiteral(red: 0.1294117647, green: 0.1294117647, blue: 0.1960784314, alpha: 1)

cells?.layer.borderColor = //... how can i set this color literal to cgColor?

As I know how to convert that UIColor to cgColor in the Swift

as example

UIColor.black.cgColor

Bingo, but what about Color Literal to cgColor in the Swift

Thank you.

Upvotes: 2

Views: 1027

Answers (1)

Nayan Dave
Nayan Dave

Reputation: 1680

  • As, You already know the simpler way of using colorLiteral as cgcolor, I'll jump to the other way of doing that...

  • For that you need a Custom Function which gets the color-value(red , green , blue) from the colorLiteral , which is as below

    extension UIColor {
    func rgb() -> (red:Int, green:Int, blue:Int, alpha:Int)? {
    var fRed : CGFloat = 0
    var fGreen : CGFloat = 0
    var fBlue : CGFloat = 0
    var fAlpha: CGFloat = 0
    if self.getRed(&fRed, green: &fGreen, blue: &fBlue, alpha: &fAlpha) {
        let iRed = Int(fRed * 255.0)
        let iGreen = Int(fGreen * 255.0)
        let iBlue = Int(fBlue * 255.0)
        let iAlpha = Int(fAlpha)

        _ = (iAlpha << 24) + (iRed << 16) + (iGreen << 8) + iBlue
        return (red:iRed, green:iGreen, blue:iBlue, alpha:iAlpha)
    } else {
        // Could not extract RGBA components:
        return nil
    }
}
}
//It's more convenient to use function in `UIColor` extension

  • Now , after this function created you can convert colorliteral into cgColor as below...

    let CodeBackground = #colorLiteral(red: 0.1294117647, green: 0.1294117647, blue: 0.1960784314, alpha: 1)
let rgblit = CodeBackground.rgb()
let Converted_cgColor = CGColor(srgbRed: CGFloat(integerLiteral: rgblit!.red), green: CGFloat(integerLiteral: rgblit!.green), blue: CGFloat(integerLiteral: rgblit!.blue), alpha: CGFloat(integerLiteral: rgblit!.alpha))

  • You can directly use Converted_cgColor like

    cells?.layer.borderColor = Converted_cgColor

HOPE IT HELPS

Upvotes: 1

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