NSScroller subclassification, how to get rid of the white square in the lower right corner?

Question

I created an iTunes subclass as a subclass of NSScroller, however, if both horizontal and vertical scrollers are visible in NSScrollView or NSTableView, I am left with an ugly white square in the lower right corner. Does anyone know where to add your own drawing to fill it with something more beautiful?

Answer 1

Ok, I think I have the solution (s).

• Or you specify scrollview not to draw its background, in this case everything below it will fill the corner.

• Or, as I did, you will override the scrollview drawRect method with the following:

  - (void)drawRect:(NSRect)rect{
     [super drawRect: rect];
  
     if([self hasVerticalScroller] && [self hasHorizontalScroller]){
       NSRect vframe = [[self verticalScroller]frame];
       NSRect hframe = [[self horizontalScroller]frame];
       NSRect corner;
       corner.origin.x = NSMaxX(hframe);
       corner.origin.y = NSMinY(hframe);
       corner.size.width = NSWidth(vframe);
       corner.size.height = NSHeight(hframe);
       // your custom drawing in the corner rect here
    }
  }