gtk2_ardour/crossfade_edit.h

   1 /*
   2     Copyright (C) 2000-2007 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #ifndef __gtk_ardour_xfade_edit_h__
  21 #define __gtk_ardour_xfade_edit_h__
  22
  23 #include <list>
  24
  25 #include <gtkmm/box.h>
  26 #include <gtkmm/button.h>
  27 #include <gtkmm/radiobutton.h>
  28
  29 #include <ardour/curve.h>
  30 #include "ardour_dialog.h"
  31 #include "canvas.h"
  32
  33 namespace ARDOUR
  34 {
  35         class Session;
  36         class Curve;
  37         class Crossfade;
  38 }
  39
  40 class CrossfadeEditor : public ArdourDialog
  41 {
  42   public:
  43         CrossfadeEditor (ARDOUR::Session&, boost::shared_ptr<ARDOUR::Crossfade>, double miny, double maxy);
  44         ~CrossfadeEditor ();
  45
  46         void apply ();
  47
  48         static const double canvas_border;
  49
  50         /* these are public so that a caller/subclass can make them do the right thing.
  51          */
  52
  53         Gtk::Button* cancel_button;
  54         Gtk::Button* ok_button;
  55
  56         struct PresetPoint {
  57             double x;
  58             double y;
  59
  60             PresetPoint (double a, double b)
  61                     : x (a), y (b) {}
  62         };
  63
  64         struct Preset : public list<PresetPoint> {
  65             const char* name;
  66             const char* image_name;
  67
  68             Preset (const char* n, const char* x) : name (n), image_name (x) {}
  69         };
  70
  71         typedef list<Preset*> Presets;
  72
  73         static Presets* fade_in_presets;
  74         static Presets* fade_out_presets;
  75
  76   protected:
  77         bool on_key_press_event (GdkEventKey*);
  78         bool on_key_release_event (GdkEventKey*);
  79
  80   private:
  81         boost::shared_ptr<ARDOUR::Crossfade> xfade;
  82         ARDOUR::Session& session;
  83
  84         Gtk::VBox vpacker;
  85
  86         struct Point {
  87             ~Point();
  88
  89             ArdourCanvas::SimpleRect* box;
  90             ArdourCanvas::Line* curve;
  91             double x;
  92             double y;
  93
  94             static const int32_t size;
  95
  96             void move_to (double x, double y, double xfract, double yfract);
  97         };
  98
  99         struct PointSorter
 100         {
 101             bool operator() (const CrossfadeEditor::Point* a, const CrossfadeEditor::Point *b) {
 102                     return a->x < b->x;
 103             }
 104         };
 105
 106         ArdourCanvas::SimpleRect*   toplevel;
 107         ArdourCanvas::Canvas* canvas;
 108
 109         struct Half {
 110             ArdourCanvas::Line*     line;
 111             ArdourCanvas::Polygon*  shading;
 112             list<Point*>            points;
 113             ARDOUR::Curve           normative_curve; /* 0 - 1.0, linear */
 114             ARDOUR::Curve           gain_curve;      /* 0 - 2.0, gain mapping */
 115             vector<ArdourCanvas::WaveView*>  waves;
 116
 117             Half();
 118         };
 119
 120         enum WhichFade {
 121                 In = 0,
 122                 Out = 1
 123         };
 124
 125         Half fade[2];
 126         WhichFade current;
 127
 128         bool point_grabbed;
 129         vector<Gtk::Button*> fade_out_buttons;
 130         vector<Gtk::Button*> fade_in_buttons;
 131
 132         Gtk::VBox vpacker2;
 133
 134         Gtk::Button clear_button;
 135         Gtk::Button revert_button;
 136
 137         Gtk::ToggleButton audition_both_button;
 138         Gtk::ToggleButton audition_left_dry_button;
 139         Gtk::ToggleButton audition_left_button;
 140         Gtk::ToggleButton audition_right_dry_button;
 141         Gtk::ToggleButton audition_right_button;
 142
 143         Gtk::ToggleButton preroll_button;
 144         Gtk::ToggleButton postroll_button;
 145
 146         Gtk::HBox roll_box;
 147
 148         gint event_handler (GdkEvent*);
 149
 150         bool canvas_event (GdkEvent* event);
 151         bool point_event (GdkEvent* event, Point*);
 152         bool curve_event (GdkEvent* event);
 153
 154         void canvas_allocation (Gtk::Allocation&);
 155         void add_control_point (double x, double y);
 156         Point* make_point ();
 157         void redraw ();
 158
 159         double effective_width () const { return canvas->get_allocation().get_width() - (2.0 * canvas_border); }
 160         double effective_height () const { return canvas->get_allocation().get_height() - (2.0 * canvas_border); }
 161
 162         void clear ();
 163         void reset ();
 164
 165         double miny;
 166         double maxy;
 167
 168         Gtk::Table fade_in_table;
 169         Gtk::Table fade_out_table;
 170
 171         void build_presets ();
 172         void apply_preset (Preset*);
 173
 174         Gtk::RadioButton select_in_button;
 175         Gtk::RadioButton select_out_button;
 176         Gtk::HBox   curve_button_box;
 177         Gtk::HBox   audition_box;
 178
 179         void curve_select_clicked (WhichFade);
 180
 181         double x_coordinate (double& xfract) const;
 182         double y_coordinate (double& yfract) const;
 183
 184         void set (const ARDOUR::Curve& alist, WhichFade);
 185
 186         sigc::connection peaks_ready_connection;
 187
 188         void make_waves (boost::shared_ptr<ARDOUR::AudioRegion>, WhichFade);
 189         void peaks_ready (boost::shared_ptr<ARDOUR::AudioRegion> r, WhichFade);
 190
 191         void _apply_to (boost::shared_ptr<ARDOUR::Crossfade> xf);
 192         void setup (boost::shared_ptr<ARDOUR::Crossfade>);
 193         void cancel_audition ();
 194         void audition_state_changed (bool);
 195
 196         enum Audition {
 197                 Both,
 198                 Left,
 199                 Right
 200         };
 201
 202         void audition_toggled ();
 203         void audition_right_toggled ();
 204         void audition_right_dry_toggled ();
 205         void audition_left_toggled ();
 206         void audition_left_dry_toggled ();
 207
 208         void audition (Audition);
 209         void audition_both ();
 210         void audition_left_dry ();
 211         void audition_left ();
 212         void audition_right_dry ();
 213         void audition_right ();
 214
 215         void xfade_changed (ARDOUR::Change);
 216
 217         void dump ();
 218 };
 219
 220 #endif /* __gtk_ardour_xfade_edit_h__ */