Dev:GSColor

From The Apple Wiki


GSColor is a group of C functions that extends CGColor of CoreGraphics. It provides these tasks:

  • Obtaining the RGBA components of a color.
  • Caching common colors.
  • Blending two colors together.

Example code

CGColor brownColor = GSColorForSystemColor(kGSBrownColor);
CGColor myBlueColor = GSColorCreateColorWithDeviceRGBA(0.2, 0.3, 0.9, 1);
CGColor blendedColor = GSColorCreateBlendedColorWithFraction(brownColor, myBlueColor, 0.25);  // 75% brown + 25% myBlue.
CGFloat blendedRedComponent = GSColorGetRedComponent(blendedColor);

CGColorRelease(myBlueColor);
CGColorRelease(blendedColor);

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