gtk2_ardour/mono_panner.h

   1 /*
   2     Copyright (C) 2010 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_mono_panner_h__
  21 #define __gtk_ardour_mono_panner_h__
  22
  23 #include "pbd/signals.h"
  24
  25 #include <gtkmm/drawingarea.h>
  26 #include <boost/shared_ptr.hpp>
  27
  28 #include "gtkmm2ext/binding_proxy.h"
  29
  30 namespace PBD {
  31         class Controllable;
  32 }
  33
  34 class MonoPanner : public Gtk::DrawingArea
  35 {
  36   public:
  37         MonoPanner (boost::shared_ptr<PBD::Controllable> pos);
  38         ~MonoPanner ();
  39
  40         boost::shared_ptr<PBD::Controllable> get_controllable() const { return position_control; }
  41
  42         sigc::signal<void> StartGesture;
  43         sigc::signal<void> StopGesture;
  44
  45   protected:
  46         bool on_expose_event (GdkEventExpose*);
  47         bool on_button_press_event (GdkEventButton*);
  48         bool on_button_release_event (GdkEventButton*);
  49         bool on_motion_notify_event (GdkEventMotion*);
  50         bool on_scroll_event (GdkEventScroll*);
  51         bool on_key_press_event (GdkEventKey*);
  52         bool on_key_release_event (GdkEventKey*);
  53         bool on_enter_notify_event (GdkEventCrossing* ev);
  54         bool on_leave_notify_event (GdkEventCrossing* ev);
  55
  56   private:
  57         boost::shared_ptr<PBD::Controllable> position_control;
  58         PBD::ScopedConnectionList connections;
  59         bool dragging;
  60         int drag_start_x;
  61         int last_drag_x;
  62         double accumulated_delta;
  63         bool detented;
  64
  65         Gtk::Window* drag_data_window;
  66         Gtk::Label* drag_data_label;
  67
  68         BindingProxy position_binder;
  69
  70         void value_change ();
  71         void set_drag_data ();
  72
  73         struct ColorScheme {
  74             uint32_t outline;
  75             uint32_t fill;
  76             uint32_t text;
  77             uint32_t background;
  78             uint32_t pos_outline;
  79             uint32_t pos_fill;
  80         };
  81
  82         static ColorScheme colors;
  83         static void set_colors ();
  84         static bool have_colors;
  85         void color_handler ();
  86 };
  87
  88 #endif /* __gtk_ardour_mono_panner_h__ */