Re: [Fwd: [gnome-love] GnomeCanvas-2.0.0 and clipgroups]

[Federico Mena Quintero <federico ximian com>]

> I've been primarily working with the Canvas for the last few days, and
> have a handle on most of the basic primitives (after digging through the
> canvas-demo code).  The problem now lies with trying to clip a group of
> GnomeCanvasItems in a rectangular bounding box.  
>
> I've grepped for gnome_canvas_clipgroup_get_type through all the Gnome2-based 
> code I can lay my hands on, but the only place its used is in gnome-print-preview.c
> ... and I can't seem to track the codepath that uses the code in question.

Clipping only works with a few item types, namely children of
GnomeCanvasShape (e.g. rectangles, ellipses, polygons, Bézier paths). 
Also, from a cursory glance at the code it looks like clipping will only
work if the canvas is being used in antialiased mode.

Clipping is highly experimental and is definitely not finalized :(

I think you are better off asking Lauris, who wrote the clipping code.

  Federico