Thanks, that sample code is very helpful for making the transition from cairo text rendering to cairo+pango text rendering. Are there python examples for pango font metrics? When just using cairo's font rendering, I would make calls such as x_bearing, y_bearing, width, height, x_advance, y_advance = ctx.text_extents( "how do i measure this in pango?" ) How do I measure these attributes in pango? Thanks Erik <div> On 11/9/06, Behdad Esfahbod <<a href="mailto:besfahbo@redhat.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">besfahbo@redhat.com</a>> wrote:<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> On Mon, 2006-11-06 at 21:08 -0500, Erik Blankinship wrote: > Thanks for the warning about cairo's font rendering. > > Could you please send a reference to how to use pangocairo with > pycairo?  I think that would be helpful for everyone on this list who > might use text in their application. Attaching a complete test case.  If you can find your way in the example, the better, otherwise some explanation follows that may be helpful mapping the C APIs to the pygtk ones. In the C API, there are three objects of interest:   cairo_t   PangoContext   PangoLayout You can get a cairo_t for your widget using         gdk_cairo_create (widget->window) You can also get a PangoContext using         gtk_widget_get_pango_context (widget) You can create a PangoLayout either using a PangoContext:         pango_layout_new (pangocontext) or get it directly from the widget:         gtk_widget_create_pango_layout (widget) There's also a third way, which is to create one using a cairo_t:         pango_cairo_create_layout (cr) Of these, you should avoid the last one if possible, because that doesn't derive font and other properties from the widget style. In pygtk, there is a convenience class hierarchy that doesn't really map to the C api, so it's worth mentioning to reduce confusion: There is the cairo.Context object which is a cairo_t. Then there is a pangocairo.CairoContext object which is a descendant of cairo.Context, with additional methods mapping to the functions like pango_cairo_create_layout() and pango_cairo_show_layout()...  It actually makes sense, since those are functions taking a cairo_t as their first argument, so they can be thought of as extended cairo_t methods. Then there is gtk.gdk.CairoContext that derives from pangocairo.CairoContext and extends that with some gdk methods, namely set_source_color and set_source_pixbuf.  Those too map to gkd_cairo_*() functions that take a cairo_t as their first argument. Now the cool part is that widget.window.cairo_create () returns a gtk.gdk.CairoContext, so you can do a show_layout() on it directly, without having to create a pangocairo.CairoContext out of it. The only thing to note is to not use the widget.window.cairo_create () context to create a PangoLayout directly (create_layout()) and use widget.get_pango_context() instead, for reasons stated above. behdad > Erik > > On 11/6/06, Behdad Esfahbod < <a href="mailto:besfahbo@redhat.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">besfahbo@redhat.com</a>> wrote: >         On Fri, 2006-11-03 at 17:27 -0500, Erik Blankinship wrote: >         > Hello >         > >         > If I want to use the system font in my cairo context, where >         do I find >         > the font file to load in? > >         NEVER EVER use cairo's text rendering capabilities to render >         any text. >         Not in olpc at least.  Use pangocairo ALL THE TIME. > >         And for families, like others suggested, use "sans-serif", >         "serif", and >         "monospace". > > >         > Thanks, >         > Erik > >         -- >         behdad >         <a href="http://behdad.org/" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">http://behdad.org/</a> > > > -- behdad <a href="http://behdad.org/" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">http://behdad.org/</a> </blockquote></div>