How to change NSPopover background color include triangle part?

Question

How can I change NSPopover background color include triangle part?

Answer 1

Thanks to Stefanf I got this working. Here is a Swift version of the View code. As noted, this should be the class for the View set as your NSPopOver contentView.

class PopoverContentView:NSView {
    var backgroundView:PopoverBackgroundView?
    override func viewDidMoveToWindow() {
        super.viewDidMoveToWindow()
        if let frameView = self.window?.contentView?.superview {
            if backgroundView == nil {
                backgroundView = PopoverBackgroundView(frame: frameView.bounds)
                backgroundView!.autoresizingMask = NSAutoresizingMaskOptions([.ViewWidthSizable, .ViewHeightSizable]);
                frameView.addSubview(backgroundView!, positioned: NSWindowOrderingMode.Below, relativeTo: frameView)
            }
        }
    }
}



class PopoverBackgroundView:NSView {
    override func drawRect(dirtyRect: NSRect) {
        NSColor.redColor().set()
        NSRectFill(self.bounds)
    }
}