Re: Re: Extensions with python

[Albert <albert zuurbier gmail com>]

Pierre-Louis,

Pitty.
So, my options are: work in C?

Am I correct in the assumption that there is no event forwarding to the 
Python API? That would explain quite a bit of what is possible and not 
possible with the API. I.e. You can retrieve information and set the 
data, but there is no live interaction.

Thanks, the examples of use of the Python console are interesting.

Regards,
Albert

Op 1:59 PM, Pierre-Louis Bonicoli schreef:
> On 18/09/2011 21:05, Albert Zuurbier wrote:
> > Hello,
> >
> > I would like to make an extension to Dia with Python (so I can learn
> > that language along the way). However, I need a bit more documentation.
> > Which I am willing to write, if you give me a chance.
> >
> > I want to make a new diagram type. From the C code I have a rough idea
> > of what I need to do (shouldn't be too difficult). But there are no
> > Python examples I can use as a start. Pydiadoc.py gives the classes,
> > attributes and methods, but not the parameters of the methods. I tried
> > to follow the logic of pydiadoc, to see if I can continue along that
> > line to get parameter information, but I don't know how Python can
> > provide me more information. So, I turn here to the real experts.
> >
> > This is the deal: if someone gets me started on creating a new diagram
> > type, then I write a tutorial and/or a contribution to the documentation
> > of dia.
> >
> > Regards,
> > Albert
> Hi !
>
> Python documentation is available here:
> http://live.gnome.org/Dia/Python
>
> It's not possible to create a new dia object type with python (see the
> second link from the page above "how to use Python to create objects in
> a diagram").
>
> Maybe the custom shape module will suit your needs, documentation is
> available here:
> http://dia-installer.de/doc/en/custom-shapes-chapter.html
> http://git.gnome.org/browse/dia/tree/doc/custom-shapes
>
> The diasvg_import.py script shows how to "instantiate" known
> diagrams/objects, it's an import filter. The export filter codegen.py is
> also interesting.
>
> You could use the python console of Dia and the python builtin "dir":
> > > > dia.active_display().diagram.data.layers[0].objects[0]
> <DiaObject of type "UML - Class" at 2fb8a30>
> > > > obj = dia.active_display().diagram.data.layers[0].objects[0]
> > > > dir(obj)
> ['bounding_box', 'connections', 'copy', 'destroy', 'distance_from',
> 'draw', 'get_object_menu', 'handles', 'move', 'move_handle', 'parent',
> 'properties']
> > > > dir(obj.properties)
> ['get', 'has_key', 'keys']
> > > > obj.properties.keys()
> ['obj_pos', 'obj_bb', 'meta', 'elem_corner', 'elem_width', ...]
>
>
> Pierre-Louis