gtk2_ardour/region_gain_line.cc

   1 #include <ardour/curve.h>
   2 #include <ardour/audioregion.h>
   3
   4 #include "region_gain_line.h"
   5 #include "regionview.h"
   6 #include "utils.h"
   7
   8 #include "time_axis_view.h"
   9 #include "editor.h"
  10
  11 #include <ardour/session.h>
  12
  13
  14 #include "i18n.h"
  15
  16
  17 using namespace std;
  18 using namespace ARDOUR;
  19 using namespace PBD;
  20
  21 AudioRegionGainLine::AudioRegionGainLine (const string & name, Session& s, AudioRegionView& r, ArdourCanvas::Group& parent, Curve& c)
  22   : AutomationLine (name, r.get_time_axis_view(), parent, c),
  23           session (s),
  24           rv (r)
  25 {
  26         group->raise_to_top ();
  27         set_verbose_cursor_uses_gain_mapping (true);
  28         terminal_points_can_slide = false;
  29 }
  30
  31 void
  32 AudioRegionGainLine::view_to_model_y (double& y)
  33 {
  34         y = slider_position_to_gain (y);
  35         y = max (0.0, y);
  36         y = min (2.0, y);
  37 }
  38
  39 void
  40 AudioRegionGainLine::model_to_view_y (double& y)
  41 {
  42         y = gain_to_slider_position (y);
  43 }
  44
  45 void
  46 AudioRegionGainLine::start_drag (ControlPoint* cp, float fraction)
  47 {
  48         AutomationLine::start_drag(cp,fraction);
  49         if (!rv.region.envelope_active()) {
  50                 trackview.session().add_undo( bind( mem_fun(rv.region, &AudioRegion::set_envelope_active), false) );
  51         }
  52 }
  53
  54 // This is an extended copy from AutomationList
  55 void
  56 AudioRegionGainLine::remove_point (ControlPoint& cp)
  57 {
  58         ModelRepresentation mr;
  59
  60         model_representation (cp, mr);
  61
  62         trackview.editor.current_session()->begin_reversible_command (_("remove control point"));
  63         trackview.editor.current_session()->add_undo (get_memento());
  64
  65         if (!rv.region.envelope_active()) {
  66                 trackview.session().add_undo( bind( mem_fun(rv.region, &AudioRegion::set_envelope_active), false) );
  67                 trackview.session().add_redo( bind( mem_fun(rv.region, &AudioRegion::set_envelope_active), true) );
  68                 rv.region.set_envelope_active(true);
  69         }
  70
  71         alist.erase (mr.start, mr.end);
  72
  73         trackview.editor.current_session()->add_redo_no_execute (get_memento());
  74         trackview.editor.current_session()->commit_reversible_command ();
  75         trackview.editor.current_session()->set_dirty ();
  76 }
  77
  78 void
  79 AudioRegionGainLine::end_drag (ControlPoint* cp)
  80 {
  81         if (!rv.region.envelope_active()) {
  82                 trackview.session().add_redo( bind( mem_fun(rv.region, &AudioRegion::set_envelope_active), true) );
  83                 rv.region.set_envelope_active(true);
  84         }
  85         AutomationLine::end_drag(cp);
  86 }
  87
  88
  89 // This is a copy from AutomationList
  90 UndoAction
  91 AudioRegionGainLine::get_memento ()
  92 {
  93         return alist.get_memento();
  94 }