Re: dashline migration from 0.14 to 2.0

[Damon Chaplin <damon karuna eclipse co uk>]

On Wed, 2013-07-03 at 22:16 +0200, Serge Noiraud wrote:
> 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 don't know. Maybe someone who knows about python and introspection
could help.


> I think it's a bug do I need to report it ?

I've added it:
  https://bugzilla.gnome.org/show_bug.cgi?id=703592

Damon