Re: Handling picking with Gtk

[Yann Renard <yann renard-mailing-lists tiscali fr>]

tomas tuxteam de wrote:
> On Wed, Nov 29, 2006 at 03:31:03PM +0100, Yann Renard wrote:
> > > Hi people, I'm new to the list and have a question.
> > >
> > > I have used Gtk for a couple of weeks now in cooperation with glade
> > > (wonderfull tools !!). I have a small problem on custom widgets [...]
>
> > > At this point, I have to chose wich of my custom
> > > objects (drawn in the GtkDrawingArea) has been clicked. The common way
> > > of doing that is to prepare something like a *stencil* buffer while
> > > rendering the colors [...]
>
> Just to be sure I got you right and for the benefit of others who might
> have better ideas: you render all of your objects on one drawing area
> and would like to know which ones of them have been hit by the click
> event, right?
>
> If you don't mind pulling in the whole gorilla (pun intended ;) there is
> the GnomeCanvas widget, which probably offers all the functionality you
> are trying to implement plus some more. It has a nice interface too (imo).
>
> There have been attempts to port GnomeCanvas to GTK[1], but they seem
> dormant at the moment (but it may fulfill your need or furnish you with
> some inspiration).
>
> I for one wouldn't mind seeing the Canvas in GTK, but I won't complain,
> since I'm not putting time in it...
>
> ----------------
> [1] <http://freshmeat.net/projects/gtkcanvas/>
> [2] <http://www.atai.org/gtk-canvas/>
>
> Regards
> -- tomÃs

Dear Tomas,

you perfectly understood my problem. However, I think your proposition
does not perfectly match my needs. First, I write portable code. I
haven't checked yet but I guess gnome widgets won't run under windows.
Moreover, I don't use gnome libs for now and I think starting using them
for this only widget would result in heavier application for little
service gain.

The functionnality I requested should probably be possible whith either
GDK or GTK... Do you claim this is not possible ?

Thank you very much for your answer anyway, I will have to check the GTK
ports and maybe find other information threre...
Best regards,

Yann Renard