I am creating a NSView
subclass that has rounded corners. This view is meant to be a container and other subviews will be added to it. I am trying to get the rounded corners of the NSView
to clip all of the subview's corners as well, but am not able to get it.
- (void)drawRect:(NSRect)dirtyRect {
NSRect rect = [self bounds];
NSBezierPath *path = [NSBezierPath bezierPathWithRoundedRect:rect xRadius:self.radius yRadius:self.radius];
[path addClip];
[[NSColor redColor] set];
NSRectFill(dirtyRect);
[super drawRect:dirtyRect];
}
The red is just for example. If I add a subview to the rect, The corners are not clipped:
How can I achieve this?
Using Core Animation layers will clip sublayers correctly.
In your container NSView subclass:
- (id)initWithFrame:(NSRect)frame
{
self = [super initWithFrame:frame];
if (self) {
self.layer = _layer; // strangely necessary
self.wantsLayer = YES;
self.layer.masksToBounds = YES;
self.layer.cornerRadius = 10.0;
}
return self;
}