Re: grid

[Damon Chaplin <damon karuna eclipse co uk>]

On Thu, 2008-09-11 at 17:45 +0200, Murray Cumming wrote:
> On Thu, 2008-09-11 at 17:35 +0300, z pekar gmail com wrote:
> > Hi,
> > I have a GooCanvasImage with GooCanvasEllipse being added and removed
> > from it. I need to place a grid on all this stuff in order to make
> > placing of GooCanvasEllipse upon the image more accurate. What is the
> > best way to do it? - draw it with paths or maybe use tables somehow?
> > thank you
> > Z. Pekar
> 
> I did this with lines.
> 
> Using C++ (and some awkward multiple inheritance) I created a whole
> heirarchy of canvas items that can snap to the grid, or to rules. That's
> in Glom. for its (unfinished) print layouts. If you are using C then
> it's probably not that useful to you, but maybe it helps to know that
> somebody else has done this.
> 
> I think this kind of high-level functionality should be in a library
> really.

I think it might be difficult to come up with an API that everyone is
happy with - it could be a bit too application-specific.

Though demo code would be useful, or items that can be easily subclassed
so they can be customized to suit a particular application.

Damon