+ if (Keyboard::modifier_state_equals (ev->state, Keyboard::Control)) {
+ //if (ev->state == GDK_CONTROL_MASK) {
+ /* XXX
+ the ev->x will be out of step with the canvas
+ if we're in mid zoom, so we have to get the damn mouse
+ pointer again
+ */
+ track_canvas.get_pointer (x, y);
+ track_canvas.window_to_world (x, y, wx, wy);
+ wx += horizontal_adjustment.get_value();
+ wy += vertical_adjustment.get_value();
+
+ GdkEvent event;
+ event.type = GDK_BUTTON_RELEASE;
+ event.button.x = wx;
+ event.button.y = wy;
+
+ jack_nframes_t where = event_frame (&event, 0, 0);
+ temporal_zoom_to_frame (true, where);
+ return true;
+ } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::Shift)) {
+ if (!current_stepping_trackview) {
+ step_timeout = Glib::signal_timeout().connect (mem_fun(*this, &Editor::track_height_step_timeout), 500);
+ if (!(current_stepping_trackview = dynamic_cast<AudioTimeAxisView*> (trackview_by_y_position (ev->y)))) {
+ return false;
+ }
+ }
+ gettimeofday (&last_track_height_step_timestamp, 0);
+ current_stepping_trackview->step_height (true);
+ return true;
+ } else {
+ scroll_tracks_up_line ();
+ return true;
+ }