darling-cocotron/QuartzCore/CIImage.m

#import <AppKit/NSRaise.h>
#import <QuartzCore/CIImage.h>

@implementation CIImage

+ (CIImage *) emptyImage {
    return [[self alloc] initWithCGImage: NULL];
}

- initWithCGImage: (CGImageRef) cgImage {
    _cgImage = CGImageRetain(cgImage);
    _filter = nil;
    return self;
}

- (void) dealloc {
    CGImageRelease(_cgImage);
    [_filter release];
    [super dealloc];
}

- (CGRect) extent {
    CGRect result;

    result.origin.x = 0;
    result.origin.y = 0;
    result.size.width = CGImageGetWidth(_cgImage);
    result.size.height = CGImageGetHeight(_cgImage);

    return result;
}

- (CGImageRef) CGImage {
    return _cgImage;
}

- (CIFilter *) filter {
    return _filter;
}

- (void) setFilter: (CIFilter *) filter {
    filter = [filter retain];
    [_filter release];
    _filter = filter;
}

@end