[cairo] Making cairo_meta_surface public

[Radek Doulík]

On Wed, 2006-02-01 at 12:45 -0800, Carl Worth wrote:
> On Tue, 31 Jan 2006 11:15:23 -0500, Dominic Lachowicz wrote:
> > For a variety of reasons, it would be useful to render (say, an SVG)
> > to an intermediate surface and then replay that intermediate surface
> > onto target surfaces repeatedly rather than rendering directly onto
> > the target surfaces. This is analogous to Win32's
> > Create[Enh]MetaFile() and Play[Enh]MetaFile() commands. Cairo has the
> > desired functionality built in, but it is currently private. I was
> > wondering how people feel about making the interface public. All that
> > I'd currently need are cairo_meta_surface_create() and
> > cairo_meta_surface_replay ().
> 
> When we first envisioned the meta-surface stuff we anticipated both
> internal and external uses for it. I definitely want to get the
> internal stuff working solidly and stressing the implementation
> semantics of the meta-surface before we consider exporting this.
> 
> So I think this is at least a post-1.2.0 discussion item.
> 
> One of the interesting opportunities for "external" meta-surfaces is
> the ability to use cairo to draw to a surface, and use that to create
> a pattern uses as a source with some transformation. The benefit here
> would be that the replayed meta-surface source would provide nice
> pre-rasterization scaling of all paths, etc.

It would be also useful for debugging/tracing - to see what is cairo
asked to do.

Or is there already some dummy backend able to dump the calls?

Cheers
Radek

> -Carl
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-- 
Radek Doulík <rodo at novell.com>
Novell, Inc.