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