[cairo] GTKCairo development
oeyvindk at hig.no
Fri Apr 30 12:49:06 PDT 2004
* Andrew Johnson <acjgenius at earthlink.net> [040430 21:21]:
> Hey all,
> I am trying to figure out how best to Clip a cairo surface using xlib
> backend(and xrender) to the GDK region currently applied to the
> corresponding gdk window.
> I can get the rectangles via gdk_region_get_rectangles, however I cannot
> see any fast and easy way to apply this directly to the surface. If I
> had the xrender handle actually being used I could simply create a new
> xregion and apply it, then free on done, but I am not seeing anyway to
> handle this in the current api.
> Am I missing something, or there is simply no simple way to handle this
> as yet?
> Also would there be any Plausible way to apply a gdk clipping mask to
> cairo? Or is that asking too much.
> Preferably much of this wouldn't be needed given a native cairo gtk, as
> trying to juggle using cairo surfaces within the gdk context is making
> life fun, but ah well maybe next year.
What would be needed to do this is to be able to convert between a
gdkregion and a path in cairo,. (and perhaps vice versa). Whether these
functions are in a cairo, gtkcairo or gtk+ namespace isn't important,
the same work is needed.
I am going to put some efforts into gtkcairo, due to a presentation, and
thus a paper I need to write, quite soon, and would be glad to
get some suggestions to features, what I currently have planned is:
- transparent backend selection (either fully automatic, or env.
variable overrride). Need to support imagebuffer currently have
xrender and glitz, need pixman as well.
- some way of accessing the current gtk+ theme's colors, (currently
I have a crude implementation in the gtkcairo_slide demo in
cairo_set_gtk_color (ct, "base", GTK_STATE_NORMAL);
the api is in need of a change
- making the default font in the toy api the same as the current
There are probably more things to be done, but these are what I have
scheduled to look at when I get the time.
/V\ Øyvind Kolås, Gjøvik University College, Norway
/(_)\ <oeyvindk at hig.no>,<pippin at users.sourceforge.net>
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