+ // This try to find a valid vanvas to show the keyframes of those
+ // valuenodes. If not canvas found then no keyframes marks are shown.
+ synfig::Canvas::Handle canvas=0;
+ for(curve_iter=curve_list_.begin();curve_iter!=curve_list_.end();++curve_iter)
+ {
+ canvas=curve_iter->value_desc.get_canvas();
+ if(canvas)
+ break;
+ }
+
+ if(canvas)
+ {
+ // Draw vertical lines for the keyframes marks.
+ const synfig::KeyframeList& keyframe_list(canvas->keyframe_list());
+ synfig::KeyframeList::const_iterator iter;
+
+ for(iter=keyframe_list.begin();iter!=keyframe_list.end();++iter)
+ {
+ if(!iter->get_time().is_valid())
+ continue;
+
+ const int x((int)((float)w/(t_end-t_begin)*(iter->get_time()-t_begin)));
+ if(iter->get_time()>=t_begin && iter->get_time()<t_end)
+ {
+ gc->set_rgb_fg_color(Gdk::Color("#a07f7f")); // It should be user selectable
+ get_window()->draw_rectangle(gc, true, x, 0, 1, h);
+ }
+ }
+ }
+ // Draw curves for the valuenodes stored in the curve list