Re: Porting launcher-gtk.py to gobject introspection

[Nicolas Évrard <nicoe altern org>]

* Jiří Techet  [2011-12-21 22:15 +0100]: 
> Hi Nicolas,

Hello Jiří,

> On Tue, Dec 20, 2011 at 15:50, Nicolas Évrard <nicoe altern org> wrote:
> > Hello,
> >
> > I am trying to port the demos launcher-gtk.py to use gobject
> > introspection. But I seem to be unable to grok the introspection
> > concept.
> >
> > So I copied both launcher-gtk.py and markers.py to a directory from an
> > old version of libchamplain and renamed everything to use the
> > introspection. But my code fails on this kind of line (in markers.py):
> >
> >     marker = Champlain.marker_new_with_text(
> >        "Montréal\n<span size=\"xx-small\">Québec</span>", "Serif 14", black,
> >        orange)
> >  I tried with Champlain.Marker("…") but it did not work,
> > Champlain.Marker.new_with_text did not work either.
> >
> > Can someone explain me how to do this ?
>
> First, the method called by the demo is
> champlain_label_new_with_text() and not
> champlain_marker_new_with_text() which appears you try to call (and
> which doesn't exist).

Well I took as an example the last version of launcher-gtk.py that I
could find:

http://gitorious.org/libchamplain/mainline/commit/c02e827d01762d39d709b2e4d7a58828dc800818/diffs

BTW once I have finished rewritting those (I'll have some time on the
25 I guess) are you interested in the result ? It would probably help
people looking for example I think.

> Second, in python bindings the prefixes with library and class names
> are converted to namespaces so instead of
> champlain_label_new_with_text() you use
> Champlain.Label.new_with_text() so something like this should work:
>
> marker = Champlain.Label.new_with_text(
>  "Montreal", "Serif 14", None, None)
>
> I don't know if the mappings are described somewhere but it usually
> helps to look into the gir file.

That's what I did, but I did not notice that the new_with_text was
under the class Label and not Marker … now I know.

Thank you very much for your help.

--
(°> Nicolas Évrard
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