[cairo] some fixes and improvements to current cvs version of cairo

[David Reveman]

On Mon, 2005-01-31 at 12:05 -0500, Carl Worth wrote: 
> On Fri, 28 Jan 2005 22:44:26 +0100, David Reveman wrote:
> > It includes a fix for the _cairo_gstate_init bug. This fix adds a
> > default_pattern to the cairo_gstate struct and cairo_set_rgb_color can
> > use this without allocating and destroying patterns all the time, and
> > cairo_gstate_init can no longer fail. What do you think?
> 
> Does reducing the mallocs actually have any performance benefit here?

I don't know, probably not.

> 
> Another approach to fixing the potential failure of cairo_gstate_init
> would be to make the allocation of the pattern lazy, (someone recently
> fixed gstate->font in a similar way). That might be slightly less
> complex.

I think you're right. I've fixed this in my current patch.

-David
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