TreeViewDemo/Utility/TreeViewColorConversion.m

/*
    File: TreeViewColorConversion.m
Abstract: TreeView Color Conversion Functions
 Version: 1.4
 
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*/
 
#import "TreeViewColorConversion.h"
 
CGColorRef TreeView_CreateCGColorFromNSColor(NSColor *color) {
    CGColorRef cgColor = NULL;
    CGFloat components[4];
    
    // Convert the given NSColor to NSCalibratedRGBColorSpace (if it isn't already expressed in that color space).
    NSColor *calibratedRGBColor = [color colorUsingColorSpaceName:NSCalibratedRGBColorSpace];
    if (calibratedRGBColor) {
        
        // Get the color's RGBA components.
        [calibratedRGBColor getRed:&components[0] green:&components[1] blue:&components[2] alpha:&components[3]];
        
        // Create a CGColor from the NSColor.
        NSColorSpace *colorSpace = [calibratedRGBColor colorSpace];
        if (colorSpace) {
            CGColorSpaceRef cgColorSpace = [colorSpace CGColorSpace];
            cgColor = CGColorCreate(cgColorSpace, components);
        }
    }
     
    return cgColor;
}