Ned Konz <ned at squeakland.org> wrote:

> On Tuesday 11 January 2005 8:01 am, Frank Shearar wrote:
> > I've tried searching, and got as far as 
> Morph>>handleMouseEnter: which
> > calls HandMorph>>triggerBalloonFor:after - I thought 
> perhaps PolygonMorph
> > overrode something to make mouse hover balloon texts behave 
> the way they
> > do, but I couldn't find anything.
> 
> That's because it's transparent. The containsPoint: method is 
> answering false 
> because of this.
> 
> If you make the color something like
>  Color r: 0 g: 0 b: 0 alpha: 0.004
> 
> or override containsPoint: in your own subclass of 
> PolygonMorph (removing the 
> test for 'color isTransparent'), it should work.

Ah great stuff - that's the method I had searched for in vain.

Thanks Ned, and Jerome too, for the quick responses.

What amuses me about this question though is that I was first going to solve the polygon-contains problem and then how to colour the regions with a translucent colour. And, of course, the solution to the former is to use the latter!

frank


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