Re: Future of Canvas on GTK+ (and probably GNOME)

[Jody Goldberg <jody gnome org>]

On Fri, Feb 11, 2005 at 03:21:49PM -0500, Havoc Pennington wrote:
> On Thu, 2005-02-10 at 19:12 +0100, Jost Boekemeier wrote:
> > 
> > Since cairo can now be used by gtk apps, writing a gtk
> > canvas shouldn't be difficult.  However, it would be
> > good if someone could post the issues that the current
> > gnome canvas has.  What should be in the gtk canvas,
> > what not?
> > 
> 
> An important question is what a canvas widget is for. In the GNOME 1.x
> days, GnomeCanvas was used to implement a lot of custom widgets.
> However, in GNOME 2.x that is very uncommon; because of accessibility
> concerns and because GTK+ itself provides anti-flicker capabilities.
> 
> So it would be interesting to map where the canvas is still used. I'd
> assume gnome-games and nautilus for example.

I agree with your notion of gtk1-canvas == custom widget.
In gtk it seems most useful in the context of documents with
embedded objects.
    - dia
    - gnumeric's drawing objects

Basicly a place where container based layout is inconvenient.