Core Image lets us specify a color space for a CIContext, as in: let context = CIContext(options: [kCIContextOutputColorSpace: NSNull(), kCIContextWorkingColorSpace: NSNull()]) Or for a CIImage...

I'm wondering if there's an easy way to get the colorspace of an image (i.e. an image loaded into a UIImage)? For example, I have a TIFF image and I'd like to be able to determine if it uses the RG...

I have a UILabel with black color; i am writing the following code to get black color's components. UIColor *aColor = [aLabel.textColor retain]; const CGFloat* components = CGColorGetComponents(a...

Is there a Cocoa Touch way to convert colors from one color space to another? At the end of this code: UIColor *grey = [UIColor colorWithWhite: 0.5 alpha: 1.0]; CGColorRef greyRef = [grey CGColor...

I set the color for UIButton with the XCode visual editor. I set it using RGB sliders. Then I set variable green: let green = UIColor(red: 0, green: 210/255, blue: 0, alpha: 1) When I printed o...

There are several questions out there that ask about converting colors between colorspaces on Apple platforms. Unfortunately, the answers quite often involve NSColor or UIColor -- non portable Obje...

I'm scaling a CGImageRef. I found various code examples on the web that begin like so: CGColorSpaceRef colorspace = CGImageGetColorSpace(image); // "Get" color space CGContextRef context = CGBitm...

I my application I pass RGB color value to server. My app uses UIColor predefined values, like [UIColor grayColor], [UIColor redColor]. I know that I can use following code: const CGFloat *c = CGC...

The problem is described in the subj.; Here's my code below: CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB(); NSArray *colors = [NSArray arrayWithObjects:[UIColor redColor], [UIColor b...