Re: Anyone know of a Graphical Timeline Widget?

["Bradley F. Hartman" <hartman mcci-arl-va com>]

Ron,

Thanks for responding.  You wrote:

> I think this falls under the "implement your own widget" heading.

True enough.  I am working under the assumption that my timeline
widget does not already exist.  For that reason, I am attempting to 
implement my own timeline widget.  The graphical timeline is only one
piece of this new widget, which I think needs to be implemented as a
CellRenderer if I want to use it in a GtkTreeViewColumn.

Your suggestion of re-implementing the expose event handler of an existing
renderer is a good one.  In fact, I had already looked through the 
CellRenderToggle code but didn't understand it all (probably because I'm
*very* new to GTK).  It is for that reason that I am looking for additional
documentation (don't laugh!).  

Has anyone out there implemented a CellRenderer before?  If so, did you
find any documentation on how to do this?  Do you have any tips?


Thanks again for responding!


Brad

> From gtk-list-admin gnome org Wed Apr  3 15:44:01 2002
> Delivered-To: gtk-list gnome org
> From: rsteinke w-link net
> To: hartman mcci-arl-va com, gtk-list gnome org
> Subject: Re: Anyone know of a Graphical Timeline Widget?
> User-Agent: nail 9.30 2/20/02
> MIME-Version: 1.0
> Content-Transfer-Encoding: 7bit
> Sender: gtk-list-admin gnome org
> X-BeenThere: gtk-list gnome org
> X-Loop: gtk-list gnome org
> X-Mailman-Version: 2.0.8
> List-Help: <mailto:gtk-list-request gnome org?subject=help>
> List-Post: <mailto:gtk-list gnome org>
> List-Subscribe: <http://mail.gnome.org/mailman/listinfo/gtk-list>,
> 	<mailto:gtk-list-request gnome org?subject=subscribe>
> List-Id: General discussion of GTK+ <gtk-list.gnome.org>
> List-Unsubscribe: <http://mail.gnome.org/mailman/listinfo/gtk-list>,
> 	<mailto:gtk-list-request gnome org?subject=unsubscribe>
> List-Archive: <http://mail.gnome.org/archives/gtk-list/>
> Date: Wed, 03 Apr 2002 12:43:07 -0800
> 
> From: "Bradley F. Hartman" <hartman mcci-arl-va com>
> >
> > In order to implement a timeline widget using the GTK TreeStore, TreeView
> > and TreeViewColumn classes, I believe I'll have to implement a CellRenderer
> > to draw the timeline for each task.  The CellRenderers provided by GTK
> > (Pixbuf, Text and Toggle) will not suffice because I'll have to draw the
> > timeline using GDK (a Pixbuf will not work). Does anyone know of
> > any documentation on this subject?  Does anyone have any tips on how
> > I can accomplish this?
> 
> I think this falls under the "implement your own widget" heading.
> There's some information about this in the tutorial, though
> I don't know how up to date it is. Your best bet is probably
> to copy the code of one of the existing renderers (depending
> on your final licensing requirements) and re-implement the
> expose event handler. Also, look at the basic drawing primitives
> in the gdk documentation.
> 
> Ron Steinke
> _______________________________________________
> gtk-list mailing list
> gtk-list gnome org
> http://mail.gnome.org/mailman/listinfo/gtk-list
>