Created
December 6, 2019 03:16
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add CSS Hex Color support for UIColor with Swift
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extension UIColor { | |
static func hex(_ val: UInt) -> UIColor { | |
var r: UInt = 0, g: UInt = 0, b: UInt = 0; | |
var a: UInt = 0xFF | |
var rgb = val | |
if (val & 0xFFFF0000) == 0 { | |
a = 0xF | |
if val & 0xF000 > 0 { | |
a = val & 0xF | |
rgb = val >> 4 | |
} | |
r = (rgb & 0xF00) >> 8 | |
r = (r << 4) | r | |
g = (rgb & 0xF0) >> 4 | |
g = (g << 4) | g | |
b = rgb & 0xF | |
b = (b << 4) | b | |
a = (a << 4) | a | |
} else { | |
if val & 0xFF000000 > 0 { | |
a = val & 0xFF | |
rgb = val >> 8 | |
} | |
r = (rgb & 0xFF0000) >> 16 | |
g = (rgb & 0xFF00) >> 8 | |
b = rgb & 0xFF | |
} | |
//NSLog("r:%X g:%X b:%X a:%X", r, g, b, a) | |
return UIColor(red: CGFloat(r) / 255.0, | |
green: CGFloat(g) / 255.0, | |
blue: CGFloat(b) / 255.0, | |
alpha: CGFloat(a) / 255.0) | |
} | |
} |
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example:
color:
#FFAABB
alpha:#DD
CSS Hex Color value is:
#FFAABBDD
or#FABD
or
so easy ~