Re: rounded rectangles problem

[James Muir <hemlock vtlink net>]

Jan Hudec wrote:

> On Wed, Aug 10, 2005 at 13:56:18 -0400, James Muir wrote:
>  
>
> > Hi All,
> >
> > I'm trying to subclass Gnome2::Canvas::Shape to get a rounded rectangle. 
> > No success yet. I need to set the Bpath for the shape. As far as I can 
> > tell the pathdef can not be set up in INIT_INSTANCE as this is too soon 
> > and the properties have not been passed in. I'm not sure if it's OK to 
> >    
>
> So set it up in SET_PROPERTY. Whenever some of the properties affecting the
> shape is set, look whether all the others are defined, and if they are, set
> the shape. SET_PROPERY /is/ called for default values if not explicitly
> specified, so you can be sure all the properties will be set before the
> object is shown.
>
>  
>
> > instantiate a pathdef inside my RoundedRect or not, and I'm not sure how 
> > to call set_path_def. I've seen in the Mup::ColorButton example that an 
> > event is used to set the button color for the first time. I tried 
> > something similar but without success.
> >    
>
> The problem is, that Gnome2::Canvas::Shape is NOT a Gtk2::Widget, so it does
> not have realize nor map signals. The SET_PROPERTY approach should be better
> and has the added benefit that the shape is reset when the properties are
> changed later.
>  
Thanks, Jan, for the suggestion. I've modified the SET_PROPERTY as you 
suggested and still no rounded rectangle.

I've written a similar program using composition rather than inheritance 
and I get a rounded rectangle. I'd use this rectangle except that I am 
unable to set the 'fill-color', and I get events only when the mouse is 
placed directly on the outline. No signals when the mouse is moved 
inside the rounded rectangle. Is this the correct behavior of the 
Gnome2::Canvas::Shape ? If so, I shall have to come up with a "plan b".

-James