An NSProgressIndicator with a different colour in the drawn bar

Question

I'd like to change the color of the default gradient that is drawn inside the NSProgressIndicator bar. What's the easiest approach?

Answer 1

As suggested in this answer, you could apply a Core Image filter to recolour it. That'd be the easiest way, as you wouldn't have to animate it yourself.

If you wanted a completely different look, then override drawRect: and draw whatever you want, using [self doubleValue] and [self maxValue] to find out where to draw. That won't get you any animation or gradients for free though.

Answer 2

I was trying to change de Hue as others said, but I was getting a lot of issues to get the right specific color i wanted. Maybe I just don't understand the color system too much...

But what did worked for me, and seems to be the most direct way to get a specific color, was using the CIColorMonochrome filter, where You can set any RGB color you want:

and programmatically:

let myCustomColor: CIColor(red: 10, green: 10, blue: 10)
if let colorMonochrome = CIFilter(name: "CIColorMonochrome", parameters: [kCIInputColorKey: myCustomColor]) {
    progressIndicator.contentFilters.append(colorMonochrome)
}

Answer 3

The easiest way is to change the HUE....refer the screen shot for better understanding...

Then you will have the Progress bar :

Answer 4

try this code. extract YRKSpinningProgressIndicator class and use it as as-usual progress indicator