gtk2_ardour/panner2d.h

   1 /*
   2     Copyright (C) 2002 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 __ardour_panner_2d_h__
  21 #define __ardour_panner_2d_h__
  22
  23 #include <sys/types.h>
  24 #include <map>
  25 #include <vector>
  26
  27 #include <glibmm/refptr.h>
  28 #include <gtkmm/drawingarea.h>
  29 #include <gtkmm/window.h>
  30 #include <gtkmm/box.h>
  31 #include <gtkmm/button.h>
  32 #include <gtkmm/spinbutton.h>
  33 #include <gtkmm/adjustment.h>
  34
  35 #include "pbd/cartesian.h"
  36
  37 #include "ardour_dialog.h"
  38
  39 namespace ARDOUR {
  40         class Panner;
  41 }
  42
  43 namespace Gtk {
  44         class Menu;
  45         class CheckMenuItem;
  46 }
  47
  48 namespace Pango {
  49         class Layout;
  50 }
  51
  52 class Panner2dWindow;
  53
  54 class Panner2d : public Gtk::DrawingArea
  55 {
  56   public:
  57         Panner2d (boost::shared_ptr<ARDOUR::Panner>, int32_t height);
  58         ~Panner2d ();
  59
  60         void allow_target_motion (bool);
  61
  62         int  add_target (const PBD::AngularVector&);
  63         int  add_puck (const char* text, const PBD::AngularVector&);
  64         void move_puck (int which, const PBD::AngularVector&);
  65         void reset (uint32_t n_inputs);
  66
  67         boost::shared_ptr<ARDOUR::Panner> get_panner() const { return panner; }
  68
  69         sigc::signal<void,int> PuckMoved;
  70         sigc::signal<void,int> TargetMoved;
  71
  72         void cart_to_gtk (PBD::CartesianVector&) const;
  73         void gtk_to_cart (PBD::CartesianVector&) const;
  74
  75   protected:
  76         bool on_expose_event (GdkEventExpose *);
  77         bool on_button_press_event (GdkEventButton *);
  78         bool on_button_release_event (GdkEventButton *);
  79         bool on_motion_notify_event (GdkEventMotion *);
  80         bool on_scroll_event (GdkEventScroll *);
  81         void on_size_allocate (Gtk::Allocation& alloc);
  82
  83   private:
  84         class Target {
  85         public:
  86                 PBD::AngularVector position;
  87                 bool visible;
  88                 std::string text;
  89
  90                 Target (const PBD::AngularVector&, const char* txt = 0);
  91                 ~Target ();
  92
  93                 void set_text (const char*);
  94                 void set_selected (bool yn) {
  95                         _selected = yn;
  96                 }
  97                 bool selected() const {
  98                         return _selected;
  99                 }
 100
 101         private:
 102                 bool _selected;
 103         };
 104
 105         boost::shared_ptr<ARDOUR::Panner> panner;
 106         Glib::RefPtr<Pango::Layout> layout;
 107
 108         typedef std::vector<Target*> Targets;
 109         Targets targets;
 110         Targets pucks;
 111         Target  position;
 112
 113         Target *drag_target;
 114         int     drag_x;
 115         int     drag_y;
 116         bool    allow_target;
 117         int     width;
 118         int     height;
 119         int     dimen;
 120
 121         bool bypassflag;
 122
 123         gint compute_x (float);
 124         gint compute_y (float);
 125
 126         Target *find_closest_object (gdouble x, gdouble y);
 127
 128         gint handle_motion (gint, gint, GdkModifierType);
 129
 130         void toggle_bypass ();
 131         void handle_state_change ();
 132         void handle_position_change ();
 133
 134         PBD::ScopedConnectionList connections;
 135
 136         /* cartesian coordinates in GTK units ; adjust to same but on a circle of radius 1.0
 137            and centered in the middle of our area
 138         */
 139         void clamp_to_circle (double& x, double& y);
 140 };
 141
 142 class Panner2dWindow : public ArdourDialog
 143 {
 144   public:
 145         Panner2dWindow (boost::shared_ptr<ARDOUR::Panner>, int32_t height, uint32_t inputs);
 146
 147         void reset (uint32_t n_inputs);
 148
 149   private:
 150         Panner2d widget;
 151
 152         Gtk::HBox         hpacker;
 153         Gtk::VBox         button_box;
 154         Gtk::ToggleButton bypass_button;
 155         Gtk::VBox         spinner_box;
 156         Gtk::VBox         left_side;
 157
 158         std::vector<Gtk::SpinButton*> spinners;
 159
 160         void bypass_toggled ();
 161         bool on_key_press_event (GdkEventKey*);
 162         bool on_key_release_event (GdkEventKey*);
 163 };
 164
 165 #endif /* __ardour_panner_2d_h__ */