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 (string name, Session& s, AudioRegionView& r, GtkCanvasItem* parent,
  21                                           Curve& c,
  22                                           gint (*point_callback)(GtkCanvasItem*, GdkEvent*, gpointer),
  23                                           gint (*line_callback)(GtkCanvasItem*, GdkEvent*, gpointer))
  24         : AutomationLine (name, r.get_time_axis_view(), parent, c, point_callback, line_callback),
  25           session (s),
  26           rv (r)
  27 {
  28         gtk_canvas_item_raise_to_top (group);
  29         set_verbose_cursor_uses_gain_mapping (true);
  30         terminal_points_can_slide = false;
  31 }
  32
  33 void
  34 AudioRegionGainLine::view_to_model_y (double& y)
  35 {
  36         y = slider_position_to_gain (y);
  37         y = max (0.0, y);
  38         y = min (2.0, y);
  39 }
  40
  41 void
  42 AudioRegionGainLine::model_to_view_y (double& y)
  43 {
  44         y = gain_to_slider_position (y);
  45 }
  46
  47 void
  48 AudioRegionGainLine::start_drag (ControlPoint* cp, float fraction)
  49 {
  50         AutomationLine::start_drag(cp,fraction);
  51         if (!rv.region.envelope_active()) {
  52                 trackview.session().add_undo( bind( mem_fun(rv.region, &AudioRegion::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         trackview.editor.current_session()->add_undo (get_memento());
  66
  67         if (!rv.region.envelope_active()) {
  68                 trackview.session().add_undo( bind( mem_fun(rv.region, &AudioRegion::set_envelope_active), false) );
  69                 trackview.session().add_redo( bind( mem_fun(rv.region, &AudioRegion::set_envelope_active), true) );
  70                 rv.region.set_envelope_active(true);
  71         }
  72
  73         alist.erase (mr.start, mr.end);
  74
  75         trackview.editor.current_session()->add_redo_no_execute (get_memento());
  76         trackview.editor.current_session()->commit_reversible_command ();
  77         trackview.editor.current_session()->set_dirty ();
  78 }
  79
  80 void
  81 AudioRegionGainLine::end_drag (ControlPoint* cp)
  82 {
  83         if (!rv.region.envelope_active()) {
  84                 trackview.session().add_redo( bind( mem_fun(rv.region, &AudioRegion::set_envelope_active), true) );
  85                 rv.region.set_envelope_active(true);
  86         }
  87         AutomationLine::end_drag(cp);
  88 }
  89
  90
  91 // This is a copy from AutomationList
  92 UndoAction
  93 AudioRegionGainLine::get_memento ()
  94 {
  95         return alist.get_memento();
  96 }