[cairo] GTKCairo development
jonsmirl at yahoo.com
Sun May 2 08:26:09 PDT 2004
Would it be too much of a leap to require that Pango always be present in the
Cairo API? and that Pango is the only text API in Cairo? I've always thought
that it was somewhat unfair that complex script fonts were treated like second
class citizens in most OS's.
--- Owen Taylor <otaylor at redhat.com> wrote:
> On Sat, 2004-05-01 at 11:17, Ãyvind KolÃ¥s wrote:
> > * Owen Taylor <otaylor at redhat.com> [040501 16:42]:
> > > We might want a convenience function something on the Gdk/Cairo
> > > interface to set the Cairo color from a GdkColor so you
> > > can do:
> > >
> > > gdk_cairo_set_color (cairo, &style->base[GTK_STATE_NORMAL]);
> > Somehow I feel cairo_gdk_set_color would make more sense, since the first
> > parameter for the function is the cairo state, my initial naming of
> > cairo_set_g?k_color was to make it similar to cairo_set_rgb_color.
> > I've implemented the function in the cairo_custom.[ch] files of the
> > gtkcairo_slide example, using your naming convention, on the grounds
> > that it only is necesary when using g?k with cairo, and it is uninteresting
> > in all other cases.
> The naming above was just meant to be a placeholder. I assumed you'd
> adapt it to whatever naming conventions you are using.
> (Note concept of namespacing ... generally all functions in a library
> should start with the same prefix to minimize the possibility of
> conflicts between libraries.)
> > > Here what we need is Pango/Cairo integration ... obviously that is a
> > > fairly big job, but since we have a real font system, spending effort
> > > integrating GTK+ with the toy font system is a bit weird. It's on my
> > > roadmap, but probably will take a while yet. If someone else wanted to
> > > play around with that, that would be great.
> > The only reason to spend some effort integrating this is that the toy
> > API in cairo is good enough for very simple things, like labels, and
> > I think the default case of not choosing a font should automatically
> > choose a font that is consistent with the rest of the ui.
> In the future when we are using Cairo within GTK+, I'll have to figure
> out how to strongly discourage using, maybe even break the toy text
> APIs :-) They will not provide consistent rendering with the real APIs
> or correct rendering of many of the world's scripts.
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jonsmirl at yahoo.com
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