spitzak at d2.com
Fri Jul 8 14:27:50 PDT 2005
Keith Packard wrote:
> I chatted with Carl on the phone and he thought the idea of extending
> the xlib backend for this double buffering case seemed reasonable
> enough; swapping out the drawable is necessary as X cannot resize
> pixmaps. He did, however, suggest that perhaps the correct API would be
> more like:
> cairo_xlib_surface_set_drawable (cairo_surface_t *surface,
> Drawable drawable,
> int width,
> int height);
> I've got the obvious patch which implements this function; are there
> other comments in this area?
If the Drawable is the same as before I hope this is just as efficient
as cairo_xlib_surface_set_size(). One way to make sure is to perhaps get
rid of the set_size() call and only provide this one.
It would be nice to provide similar functions for the Win32 and any
other window system back-ends. Even though the Win32 version requires
you to destroy and create a HGC to change, this has to be more efficient
that destroying and recreating the entire cairo_t.
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