use new ruler dialog class for context clicks on ruler labels area

gtk2_ardour/editor.cc

@@ -303,6 +303,7 @@ Editor::Editor ()
         pre_press_cursor = 0;
 	_drags = new DragManager (this);
 	lock_dialog = 0;
+	ruler_dialog = 0;
 	current_mixer_strip = 0;
 	tempo_lines = 0;
 

gtk2_ardour/editor.h

@@ -117,6 +117,7 @@ class PlaylistSelector;
 class PluginSelector;
 class ProgressReporter;
 class RhythmFerret;
+class RulerDialog;
 class Selection;
 class SoundFileOmega;
 class StreamView;
@@ -805,6 +806,8 @@ class Editor : public PublicEditor, public PBD::ScopedConnectionList, public ARD
 
 	Gtk::Widget * ruler_grabbed_widget;
 
+	RulerDialog* ruler_dialog;
+
 	void initialize_rulers ();
 	void update_just_timecode ();
 	void compute_fixed_ruler_scale (); //calculates the RulerScale of the fixed rulers

gtk2_ardour/editor_rulers.cc

@@ -47,6 +47,7 @@
 #include "editing.h"
 #include "actions.h"
 #include "gui_thread.h"
+#include "ruler_dialog.h"
 #include "time_axis_view.h"
 #include "editor_drag.h"
 #include "editor_cursors.h"
@@ -181,10 +182,10 @@ bool
 Editor::ruler_label_button_release (GdkEventButton* ev)
 {
 	if (Gtkmm2ext::Keyboard::is_context_menu_event (ev)) {
-		Gtk::Menu* m = dynamic_cast<Gtk::Menu*> (ActionManager::get_widget (X_("/RulerMenuPopup")));
-		if (m) {
-			m->popup (1, ev->time);
+		if (!ruler_dialog) {
+			ruler_dialog = new RulerDialog ();
 		}
+		ruler_dialog->present ();
 	}
 
 	return true;

gtk2_ardour/wscript

@@ -193,6 +193,7 @@ gtk2_ardour_sources = [
         'route_processor_selection.cc',
         'route_time_axis.cc',
         'route_ui.cc',
+        'ruler_dialog.cc',
         'search_path_option.cc',
         'selection.cc',
         'send_ui.cc',