Created
August 23, 2018 00:45
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Changing the color of a spinning `NSProgressIndicator` using Core Image filters.
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| extension NSProgressIndicator { | |
| func set(tintColor: NSColor) { | |
| guard let adjustedTintColor = tintColor.usingColorSpace(.deviceRGB) else { | |
| contentFilters = [] | |
| return | |
| } | |
| let tintColorRedComponent = adjustedTintColor.redComponent | |
| let tintColorGreenComponent = adjustedTintColor.greenComponent | |
| let tintColorBlueComponent = adjustedTintColor.blueComponent | |
| let tintColorMinComponentsVector = CIVector(x: tintColorRedComponent, y: tintColorGreenComponent, z: tintColorBlueComponent, w: 0.0) | |
| let tintColorMaxComponentsVector = CIVector(x: tintColorRedComponent, y: tintColorGreenComponent, z: tintColorBlueComponent, w: 1.0) | |
| let colorClampFilter = CIFilter(name: "CIColorClamp")! | |
| colorClampFilter.setDefaults() | |
| colorClampFilter.setValue(tintColorMinComponentsVector, forKey: "inputMinComponents") | |
| colorClampFilter.setValue(tintColorMaxComponentsVector, forKey: "inputMaxComponents") | |
| contentFilters = [colorClampFilter] | |
| } | |
| } |
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P.S: Adding this filter on Mojave, 10.14.3 (18D109), breaks dark appearance background color tinting.