- double playhead_frame_to_position (framepos_t) const;
- framepos_t position_to_playhead_frame_to_position (double pos) const;
- void set_overlays_dirty (int, int, int, int);
+ double playhead_sample_to_position (samplepos_t) const;
+ samplepos_t position_to_playhead_sample_to_position (double pos) const;
+ void set_overlays_dirty_rect (int, int, int, int);
+
+ void summary_zoom_step ( int steps );