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