darling-cocotron/CoreGraphics/CGGradient.m

#import <CoreGraphics/CGColor.h>
#import <CoreGraphics/CGGradient.h>
#import <Foundation/NSString.h>

CGGradientRef CGGradientCreateWithColorComponents(CGColorSpaceRef colorSpace,
                                                  const CGFloat components[],
                                                  const CGFloat locations[],
                                                  size_t count)
{
    return NULL;
}

CGGradientRef CGGradientCreateWithColors(CGColorSpaceRef colorSpace,
                                         CFArrayRef colors,
                                         const CGFloat locations[])
{
    CFIndex i, count = CFArrayGetCount(colors);
    size_t numberOfComponents =
        CGColorSpaceGetNumberOfComponents(colorSpace) + 1;
    CGFloat components[count * numberOfComponents];

    for (i = 0; i < count; i++) {
        CGColorRef color = (CGColorRef) CFArrayGetValueAtIndex(colors, i);
        size_t checkNumberOfComponents = CGColorGetNumberOfComponents(color);
        size_t j;

        if (checkNumberOfComponents == numberOfComponents) {
            const CGFloat *copy = CGColorGetComponents(color);

            for (j = 0; j < numberOfComponents; j++)
                components[i * numberOfComponents + j] = components[j];
        } else {
            NSLog(@"CGGradientCreateWithColors, color spaces don't match, "
                  @"conversion not implemented");
            for (j = 0; j < numberOfComponents; j++)
                components[i * numberOfComponents + j] = 0;
        }
    }

    return CGGradientCreateWithColorComponents(colorSpace, components,
                                               locations, count);
}

void CGGradientRelease(CGGradientRef self) {
    if (self == NULL)
        return;

    CFRelease(self);
}

CGGradientRef CGGradientRetain(CGGradientRef self) {
    if (self == NULL)
        return NULL;

    return (CGGradientRef) CFRetain(self);
}