gtk2_ardour/region_gain_line.cc

   1 #include <ardour/curve.h>
   2 #include <ardour/audioregion.h>
   3 #include <pbd/memento_command.h>
   4
   5 #include "region_gain_line.h"
   6 #include "audio_region_view.h"
   7 #include "utils.h"
   8
   9 #include "time_axis_view.h"
  10 #include "editor.h"
  11
  12 #include <ardour/session.h>
  13
  14
  15 #include "i18n.h"
  16
  17
  18 using namespace std;
  19 using namespace ARDOUR;
  20 using namespace PBD;
  21
  22 AudioRegionGainLine::AudioRegionGainLine (const string & name, Session& s, AudioRegionView& r, ArdourCanvas::Group& parent, Curve& c)
  23   : AutomationLine (name, r.get_time_axis_view(), parent, c),
  24           session (s),
  25           rv (r)
  26 {
  27         group->raise_to_top ();
  28         set_verbose_cursor_uses_gain_mapping (true);
  29         terminal_points_can_slide = false;
  30 }
  31
  32 void
  33 AudioRegionGainLine::view_to_model_y (double& y)
  34 {
  35         y = slider_position_to_gain (y);
  36         y = max (0.0, y);
  37         y = min (2.0, y);
  38 }
  39
  40 void
  41 AudioRegionGainLine::model_to_view_y (double& y)
  42 {
  43         y = gain_to_slider_position (y);
  44 }
  45
  46 void
  47 AudioRegionGainLine::start_drag (ControlPoint* cp, float fraction)
  48 {
  49         AutomationLine::start_drag(cp,fraction);
  50         if (!rv.audio_region()->envelope_active()) {
  51                 trackview.session().add_command(new MementoCommand<AudioRegion>(*(rv.audio_region().get()), &rv.audio_region()->get_state(), 0));
  52                 rv.audio_region()->set_envelope_active(false);
  53         }
  54 }
  55
  56 // This is an extended copy from AutomationList
  57 void
  58 AudioRegionGainLine::remove_point (ControlPoint& cp)
  59 {
  60         ModelRepresentation mr;
  61
  62         model_representation (cp, mr);
  63
  64         trackview.editor.current_session()->begin_reversible_command (_("remove control point"));
  65         XMLNode &before = alist.get_state();
  66
  67         if (!rv.audio_region()->envelope_active()) {
  68                 XMLNode &region_before = rv.audio_region()->get_state();
  69                 rv.audio_region()->set_envelope_active(true);
  70                 XMLNode &region_after = rv.audio_region()->get_state();
  71                 trackview.session().add_command(new MementoCommand<AudioRegion>(*(rv.audio_region().get()), &region_before, &region_after));
  72         }
  73
  74         alist.erase (mr.start, mr.end);
  75
  76         trackview.editor.current_session()->add_command (new MementoCommand<AutomationList>(alist, &before, &alist.get_state()));
  77         trackview.editor.current_session()->commit_reversible_command ();
  78         trackview.editor.current_session()->set_dirty ();
  79 }
  80
  81 void
  82 AudioRegionGainLine::end_drag (ControlPoint* cp)
  83 {
  84         if (!rv.audio_region()->envelope_active()) {
  85                 rv.audio_region()->set_envelope_active(true);
  86                 trackview.session().add_command(new MementoCommand<AudioRegion>(*(rv.audio_region().get()), 0, &rv.audio_region()->get_state()));
  87         }
  88
  89         AutomationLine::end_drag(cp);
  90 }
  91