I have an NSBezierPath and I want to draw in inset shadow (similar to Photoshop) inside the path.

Is there anyway to do this? Also, I know you can -stroke paths, but can you stroke inside a path (similar to Stroke Inside in Photoshop)?

Update

This is the code I'm using. The first part makes a white shadow downwards. The second part draws the gray gradient. The third part draws the black inset shadow. Assume path is an NSBezierPath instance and that clr(...) returns an NSColor from a hex string.

NSShadow * shadow = [NSShadow new];
[shadow setShadowColor: [NSColor colorWithDeviceWhite: 1.0f alpha: 0.5f]];
[shadow setShadowBlurRadius: 0.0f];
[shadow setShadowOffset: NSMakeSize(0, 1)];
[shadow set];
[shadow release];

NSGradient * gradient = [[NSGradient alloc] initWithColorsAndLocations: clr(@"#262729"), 0.0f, clr(@"#37383a"), 0.43f, clr(@"#37383a"), 1.0f, nil];
[gradient drawInBezierPath: path angle: 90.0f];
[gradient release];

[NSGraphicsContext saveGraphicsState];

[path setClip];

shadow = [NSShadow new];
[shadow setShadowColor: [NSColor redColor]];
[shadow setShadowBlurRadius: 0.0f];
[shadow setShadowOffset: NSMakeSize(0, -1)];
[shadow set];
[shadow release];

[path stroke];

[NSGraphicsContext restoreGraphicsState];

Here you can see a gradient fill, a white drop shadow downwards, and a black inner shadow downwards.