Heated agreement? (was) Re: Canvas shortcomings

[Martin Sevior <msevior mccubbin ph unimelb edu au>]

On Tue, 19 Jun 2001, Owen Taylor wrote:
> 
> 
> My ideas are simply:
>  
>  - Basic API is painting, not a canvas. There is no heirarchy
>    of objects, or idea of having the entire scene in memory.
> 
>  - But instead of a PS-like "moveto lineto" scheme, you 
>    lightweight shape objects that you can create for primitives
>    like circles and rectangles.
> 

I say:
> I fully agree. Since Havoc has explained how this could be done in C, I
> think it should be possible to have a function:
>
> gnome_canvas_draw( GnomeCanvas * myCanvas, Gtk_Generic_Graphics_Context
*
> gc);
>
> Where gc is one of:
>
> 1. Standard gdk drawing context
> 2. Postscript context
> 3. PDF context
(More stuff..)


Lauris says:

>Let's have something like:
>
>Gnome2DDrawContext - universal drawing context
>Gnome2DDisplayGraph - display graph system
>
>So the function would be:
>
> gnome_2d_display_graph_draw (Gnome2DDisplayGraph *dg,
                             Gnome2DDrawingContext *dc);


It seems to me that we're in heated agreement that there should be a set
of virtual primitive functions that call arbitary backend graphics
contexts. Right?

To start the ball rolling I could post the set implemented by AbiWord if
that would help in establishing what set of virtual functions should be
defined.

Cheers

Martin