Remove unused variable and the accessor methods for it from ARDOUR_UI

[ardour.git] / gtk2_ardour / automation_line.cc

diff --git a/gtk2_ardour/automation_line.cc b/gtk2_ardour/automation_line.cc
index 67f91e1ed474b0f0a00adce1e8b25f034fffb795..a72916191173a202609b0e388837dc3b450c006d 100644 (file)
--- a/gtk2_ardour/automation_line.cc
+++ b/gtk2_ardour/automation_line.cc
@@ -232,6 +232,7 @@ AutomationLine::AutomationLine (const string & name, TimeAxisView& tv, ArdourCan
        no_draw = false;
        _visible = true;
        terminal_points_can_slide = true;
+       _y_position = 0;
        _height = 0;
 
        group = new ArdourCanvas::Group (parent);
@@ -307,17 +308,27 @@ AutomationLine::control_point_box_size ()
 }
 
 void
-AutomationLine::set_height (guint32 h)
+AutomationLine::set_y_position_and_height (guint32 y, guint32 h)
 {
+       bool changed = false;
+       
+       if (y != _y_position) {
+               _y_position = y;
+               changed = true;
+       }
+               
        if (h != _height) {
                _height = h;
 
-               double bsz = control_point_box_size();
+               double const bsz = control_point_box_size();
 
                for (vector<ControlPoint*>::iterator i = control_points.begin(); i != control_points.end(); ++i) {
                        (*i)->set_size (bsz);
                }
+               changed = true;
+       }
 
+       if (changed) {
                reset ();
        }
 }
@@ -365,7 +376,7 @@ AutomationLine::modify_view_point (ControlPoint& cp, double x, double y, bool wi
 
        y = max (0.0, y);
        y = min (1.0, y);
-       y = _height - (y * _height);
+       y = _y_position + _height - (y * _height);
 
        if (cp.can_slide) {
 
@@ -494,7 +505,7 @@ AutomationLine::model_representation (ControlPoint& cp, ModelRepresentation& mr)
        */
        
        mr.xval = (nframes_t) floor (cp.get_x());
-       mr.yval = 1.0 - (cp.get_y() / _height);
+       mr.yval = 1.0 - ( (cp.get_y() - _y_position) / _height);
 
         /* if xval has not changed, set it directly from the model to avoid rounding errors */
 
@@ -831,7 +842,7 @@ AutomationLine::point_drag (ControlPoint& cp, nframes_t x, float fraction, bool
 void
 AutomationLine::line_drag (uint32_t i1, uint32_t i2, float fraction, bool with_push) 
 {
-       double ydelta = fraction - last_drag_fraction;
+       double const ydelta = fraction - last_drag_fraction;
 
        did_push = with_push;
        
@@ -844,7 +855,7 @@ AutomationLine::line_drag (uint32_t i1, uint32_t i2, float fraction, bool with_p
 
        for (uint32_t i = i1 ; i <= i2; i++) {
                cp = nth (i);
-               modify_view_point (*cp, trackview.editor.unit_to_frame (cp->get_x()), ((_height - cp->get_y()) /_height) + ydelta, with_push);
+               modify_view_point (*cp, trackview.editor.unit_to_frame (cp->get_x()), ((_height - cp->get_y() + _y_position) /_height) + ydelta, with_push);
        }
 
        if (line_points.size() > 1) {
@@ -1041,8 +1052,8 @@ AutomationLine::get_selectables (nframes_t& start, nframes_t& end,
 
        /* Curse X11 and its inverted coordinate system! */
        
-       bot = (1.0 - topfrac) * _height;
-       top = (1.0 - botfrac) * _height;
+       bot = _y_position + (1.0 - topfrac) * _height;
+       top = _y_position + (1.0 - botfrac) * _height;
        
        nstart = max_frames;
        nend = 0;
@@ -1108,8 +1119,8 @@ AutomationLine::set_selected_points (PointSelection& points)
 
                /* Curse X11 and its inverted coordinate system! */
 
-               bot = (1.0 - (*r).high_fract) * _height;
-               top = (1.0 - (*r).low_fract) * _height;
+               bot = _y_position + (1.0 - (*r).high_fract) * _height;
+               top = _y_position + (1.0 - (*r).low_fract) * _height;
 
                for (vector<ControlPoint*>::iterator i = control_points.begin(); i != control_points.end(); ++i) {
                        
@@ -1203,7 +1214,7 @@ AutomationLine::reset_callback (const AutomationList& events)
                model_to_view_y (translated_y);
 
                tmp_points.push_back (ALPoint (trackview.editor.frame_to_unit ((*ai)->when),
-                                              _height - (translated_y * _height)));
+                                              _y_position + _height - (translated_y * _height)));
        }
        
        determine_visible_control_points (tmp_points);