Note that it is not completely trivial to use pango_show_layout_line instead of pango_show_layout as they have different anchor points. pango_show_layout draws with the current point at the upper logical extent of the layout, and pango_show_layout_line draws with respect to the baseline of the text. See:
http://live.gnome.org/PangoLayoutLineBbox Thus it does not make sense to create a binding for just one of them. Regards, Dov 2009/3/7 Chris Vine <ch...@cvine.freeserve.co.uk> > On Fri, 06 Mar 2009 12:14:53 +0100 > Christian Schaubschlaeger <c...@gup.uni-linz.ac.at> wrote: > > Dov Grobgeld schrieb: > > > I cleaned up my example a bit and put it in GnomeLive. See: > > > > > > http://live.gnome.org/OutlineLabel > > > > Thanks for the example! > > I'm just trying to port it to gtkmm. Unfortunately I > > cannot find the corresponding C++ construct for the > > "Pango.cairo_show_layout()" call in Dov's Vala code. > > Would that be a pangocairo function? I could not find > > C++ bindings for the pangocairo lib. Are there any? > > However, I'm not sure if the code snippet below is > > correct at all, I'm (unfortunately) new to Pango and > > Cairo... > > > > Thanks and best regards > > Christian > > > > bool > > OutlineLabel::on_expose(GdkEventExpose *event) > > { > > //Gdk::cairo_create(this->window); > > Cairo::RefPtr<Cairo::ImageSurface> surface; > > Cairo::RefPtr<Cairo::Context> cr; > > Glib::RefPtr<Pango::Layout> layout; > > int width,height; > > > > layout = this->get_layout(); > > width = -1; height = -1; > > layout->get_size(width,height); > > > > surface = Cairo::ImageSurface::create(Cairo::FORMAT_ARGB32, > > width, height); cr = Cairo::Context::create(surface); > > > cr->move_to((this->get_allocation().get_width()-width/Pango::SCALE)/2,0); > > cr->set_sorce_rgba(1,0,0,1); > > > > // in VALA: Pango.cairo_show_layout(cr,layout); > > // in C++? > > ... > > > > } > > pango_cairo_show_layout() does not appear to be wrapped, but > pango_cairo_show_layout_line() is (as > Pango::LayoutLine::show_in_cairo_context()), so I suggest you use that > with Pango::Layout::get_line() and/or Pango::Layout::get_lines(). > > Chris >
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