Subtracting a string from inside a CALayer. Like an cut out mask in Photoshop.

gistfile1.m

CALayer *myLayer = [CALayer layer];
[myLayer setFrame:rect];

[myLayer setBackgroundColor:[myColour CGColor]];
[myLayer setCornerRadius:radius];

UIGraphicsBeginImageContext([myLayer frame].size);

CGContextRef context = UIGraphicsGetCurrentContext();

CGContextSaveGState(context);
[myLayer renderInContext:context];
CGContextRestoreGState(context);

CGContextSetBlendMode(context, kCGBlendModeClear);

[myString drawInRect:myStringsBounds withFont:[UIFont boldSystemFontOfSize: 11]];

CGContextSetBlendMode(context, kCGBlendModeNormal);

UIImage *outputImage = UIGraphicsGetImageFromCurrentImageContext();

UIGraphicsEndImageContext();

[outputImage drawInRect:rect];

wow niice!
can you draw an image instead at line 17 and it subtracts it from the layer??

@baldoph I believe so.