Example using blue NSColor:
NSColor* color = [NSColor blueColor];
NSString* hexString = [NSString stringWithFormat:@"%02X%02X%02X",
(int) (color.redComponent * 0xFF), (int) (color.greenComponent * 0xFF),
(int) (color.blueComponent * 0xFF)];
سؤال
Does anyone know if it's possible to get a hexadecimal value of the color from NSColor in Cocoa?
المحلول
Example using blue NSColor:
NSColor* color = [NSColor blueColor];
NSString* hexString = [NSString stringWithFormat:@"%02X%02X%02X",
(int) (color.redComponent * 0xFF), (int) (color.greenComponent * 0xFF),
(int) (color.blueComponent * 0xFF)];
نصائح أخرى
I like D.A.H 's solution and I make it a computed property instead of a function:
import Cocoa
extension NSColor {
var hexString: String {
let red = Int(round(self.redComponent * 0xFF))
let green = Int(round(self.greenComponent * 0xFF))
let blue = Int(round(self.blueComponent * 0xFF))
let hexString = NSString(format: "#%02X%02X%02X", red, green, blue)
return hexString as String
}
}
A solution that doesn't crash due to color space issues:
import Cocoa
extension NSColor {
var hexString: String {
guard let rgbColor = usingColorSpaceName(NSColorSpaceName.calibratedRGB) else {
return "#FFFFFF"
}
let red = Int(round(rgbColor.redComponent * 0xFF))
let green = Int(round(rgbColor.greenComponent * 0xFF))
let blue = Int(round(rgbColor.blueComponent * 0xFF))
let hexString = NSString(format: "#%02X%02X%02X", red, green, blue)
return hexString as String
}
}
An option is to create an extension to NSColor
public extension NSColor {
func getHexString() -> String {
let red = Int(round(self.redComponent * 0xFF))
let grn = Int(round(self.greenComponent * 0xFF))
let blu = Int(round(self.blueComponent * 0xFF))
let hexString = NSString(format: "#%02X%02X%02X", red, grn, blu)
return hexString
}
}
Updated for Swift 4
extension NSColor {
var hexString: String {
guard let rgbColor = usingColorSpaceName(NSColorSpaceName.calibratedRGB) else {
return "FFFFFF"
}
let red = Int(round(rgbColor.redComponent * 0xFF))
let green = Int(round(rgbColor.greenComponent * 0xFF))
let blue = Int(round(rgbColor.blueComponent * 0xFF))
let hexString = NSString(format: "#%02X%02X%02X", red, green, blue)
return hexString as String
}
}