+ ENSURE_GUI_THREAD(bind (mem_fun (*this, &Editor::tempo_map_changed), ignored));
+
+ if (tempo_lines)
+ tempo_lines->tempo_map_changed();
+
+ compute_current_bbt_points(leftmost_frame, leftmost_frame + current_page_frames());
+ session->tempo_map().apply_with_metrics (*this, &Editor::draw_metric_marks); // redraw metric markers
+ redraw_measures ();
+}
+
+void
+Editor::redisplay_tempo (bool immediate_redraw)
+{
+ if (!session) {
+ return;
+ }
+
+ compute_current_bbt_points (leftmost_frame, leftmost_frame + current_page_frames()); // redraw rulers and measures
+
+ compute_current_bbt_points (leftmost_frame, leftmost_frame + current_page_frames());
+ if (immediate_redraw) {
+ redraw_measures ();
+ } else {
+#ifdef GTKOSX
+ redraw_measures ();
+#else
+ Glib::signal_idle().connect (mem_fun (*this, &Editor::redraw_measures));
+#endif
+ }
+ update_tempo_based_rulers (); // redraw rulers and measures
+}
+
+void
+Editor::compute_current_bbt_points (nframes_t leftmost, nframes_t rightmost)
+{
+ if (!session) {
+ return;
+ }