On Jun 5, 2008, at 6:15 PM, Nick Zitzmann wrote:
On Jun 5, 2008, at 6:12 PM, Felipe Monteiro de Carvalho wrote:
I would love to, but this method was added in 10.5
I am using 10.4
You can still do this in 10.4, just not with NSBitmapImageRep.
Create an NSImage, call -lockFocus on it to create a CGContextRef,
call [[NSGraphicsContext currentContext] graphicsPort] to get the
context _after_ locking focus, draw the image, then call -
unlockFocus. That ought to work.
Here's the method I wrote to do just that:
NSImage *CGImageRefToNSImage (CGImageRef cgImage)
{
NSRect imageRect = NSMakeRect(0.0, 0.0, 0.0, 0.0);
CGContextRef imageContext = nil;
NSImage *newImage = nil;
// Get the image dimensions
imageRect.size = NSMakeSize(CGImageGetWidth(cgImage),
CGImageGetHeight(cgImage));
// Create a new image to receive the Quartz image data
newImage = [[NSImage alloc] initWithSize:imageRect.size];
[newImage setCacheMode:NSImageCacheNever];
[newImage lockFocus];
// Get the Quartz context and draw
imageContext = (CGContextRef)[[NSGraphicsContext currentContext]
graphicsPort];
CGContextDrawImage(imageContext, *(CGRect *)&imageRect, cgImage);
[newImage unlockFocus];
return([newImage autorelease]);
}
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