Re: dashline migration from 0.14 to 2.0

[Serge Noiraud <Serge Noiraud free fr>]

Le 02/07/2013 10:30, Damon Chaplin a écrit :
> On Mon, 2013-07-01 at 20:54 +0200, Serge Noiraud wrote:
> > Hi,
> >
> > I have a porting problem with dash lines.
> > With goocanvas 0.14
> > the python program used :
> >
> >               item = goocanvas.Path(parent = self.current_parent(),
> >                                     data = p_data,
> >                                     stroke_color = stroke_color,
> >                                     line_width = 1,
> >                                     line_dash = goocanvas.LineDash([5.0, 5.0]))
> >
> > Someone port it to :
> >
> >               item = GooCanvas.CanvasPath(parent = self.current_parent(),
> >                                           data = p_data,
> >                                           stroke_color = stroke_color,
> >                                           line_width = 1,
> >                                           line_dash = GooCanvas.LineDash([5.0, 5.0]))
> >
> > It crashed because GooCanvas.LineDash accept no argument.
> > What is the best way to have the same functionality ?
> I think the same problem occurred with GooCanvas.CanvasPoints.
> Apparently boxed types do not allow arguments to constructors with
> introspection. So the __new__ function was overridden. See
> bindings/python/GooCanvas.py.
>
> Maybe you can do the same thing for LineDash.
>
> A long-term solution I guess would be to add a function like
> goo_canvas_line_dash_set_dashes() to set the dash data after it has been
> created. (We also need a set_dash_offset().)
>
> Damon
Too complicated for me as I don't understand what is done. Is there a easier method ?
I think it's a bug do I need to report it ?