Small cleanups to port matrix context menu.

[ardour.git] / gtk2_ardour / utils.cc

diff --git a/gtk2_ardour/utils.cc b/gtk2_ardour/utils.cc
index 4c4bcf69ec5efef711b4714827568d469ae94436..0f53b0912f27f05232eef85a7d603c119a1617f4 100644 (file)
--- a/gtk2_ardour/utils.cc
+++ b/gtk2_ardour/utils.cc
@@ -936,3 +936,40 @@ resize_window_to_proportion_of_monitor (Gtk::Window* window, int max_width, int
 
        window->resize (w, h);
 }
+
+Glib::RefPtr<Gdk::Pixbuf>
+pixbuf_from_ustring(const ustring& name, Pango::FontDescription* font, int clip_width, int clip_height)
+{
+       static Glib::RefPtr<Gdk::Pixbuf>* empty_pixbuf = 0;
+
+       if (name.empty()) {
+               if (empty_pixbuf == 0) {
+                       empty_pixbuf = new Glib::RefPtr<Gdk::Pixbuf>;
+                       *empty_pixbuf = Gdk::Pixbuf::create(Gdk::COLORSPACE_RGB, true, 8, clip_width, clip_height);
+               }
+               cerr << "\n\nUSE EMPTY PIXBUF\n";
+               return *empty_pixbuf;
+       }
+
+       Glib::RefPtr<Gdk::Pixbuf> buf = Gdk::Pixbuf::create(Gdk::COLORSPACE_RGB, true, 8, clip_width, clip_height);
+
+       cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, clip_width, clip_height);
+       cairo_t* cr = cairo_create (surface);
+       cairo_text_extents_t te;
+       
+       cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 1.0);
+       cairo_select_font_face (cr, font->get_family().c_str(),
+                               CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
+       cairo_set_font_size (cr,  font->get_size() / Pango::SCALE);
+       cairo_text_extents (cr, name.c_str(), &te);
+       
+       cairo_move_to (cr, 0.5, 0.5 - te.height / 2 - te.y_bearing + clip_height / 2);
+       cairo_show_text (cr, name.c_str());
+       
+       convert_bgra_to_rgba(cairo_image_surface_get_data (surface), buf->get_pixels(), clip_width, clip_height);
+
+       cairo_destroy(cr);
+       cairo_surface_destroy(surface);
+
+       return buf;
+}