gtk2_ardour/stereo_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_stereo_panner_h__
  21 #define __gtk_ardour_stereo_panner_h__
  22
  23 #include "pbd/signals.h"
  24 #include "widgets/binding_proxy.h"
  25 #include "panner_interface.h"
  26
  27 namespace ARDOUR {
  28         class PannerShell;
  29 }
  30
  31 namespace PBD {
  32         class Controllable;
  33 }
  34
  35 namespace ARDOUR {
  36         class Panner;
  37 }
  38
  39 class StereoPanner : public PannerInterface
  40 {
  41 public:
  42         StereoPanner (boost::shared_ptr<ARDOUR::PannerShell>);
  43         ~StereoPanner ();
  44
  45         boost::shared_ptr<PBD::Controllable> get_position_controllable() const { return position_control; }
  46         boost::shared_ptr<PBD::Controllable> get_width_controllable() const { return width_control; }
  47
  48         sigc::signal<void> StartPositionGesture;
  49         sigc::signal<void> StopPositionGesture;
  50         sigc::signal<void> StartWidthGesture;
  51         sigc::signal<void> StopWidthGesture;
  52
  53 protected:
  54         bool on_expose_event (GdkEventExpose*);
  55         bool on_button_press_event (GdkEventButton*);
  56         bool on_button_release_event (GdkEventButton*);
  57         bool on_motion_notify_event (GdkEventMotion*);
  58         bool on_scroll_event (GdkEventScroll*);
  59         bool on_key_press_event (GdkEventKey*);
  60
  61         boost::weak_ptr<PBD::Controllable> proxy_controllable () const
  62         {
  63                 return boost::weak_ptr<PBD::Controllable> (position_binder.get_controllable());
  64         }
  65
  66 private:
  67         PannerEditor* editor ();
  68         boost::shared_ptr<ARDOUR::PannerShell> _panner_shell;
  69
  70         boost::shared_ptr<PBD::Controllable> position_control;
  71         boost::shared_ptr<PBD::Controllable> width_control;
  72         PBD::ScopedConnectionList panvalue_connections;
  73         PBD::ScopedConnectionList panshell_connections;
  74         bool dragging_position;
  75         bool dragging_left;
  76         bool dragging_right;
  77         int drag_start_x;
  78         int last_drag_x;
  79         double accumulated_delta;
  80         bool detented;
  81
  82         ArdourWidgets::BindingProxy position_binder;
  83         ArdourWidgets::BindingProxy width_binder;
  84
  85         void set_tooltip ();
  86
  87         struct ColorScheme {
  88                 uint32_t outline;
  89                 uint32_t fill;
  90                 uint32_t text;
  91                 uint32_t background;
  92                 uint32_t rule;
  93         };
  94
  95         enum State {
  96                 Normal,
  97                 Mono,
  98                 Inverted
  99         };
 100
 101         bool _dragging;
 102
 103         static Pango::AttrList panner_font_attributes;
 104         static bool have_font;
 105
 106         static ColorScheme colors[3];
 107         static void set_colors ();
 108         static bool have_colors;
 109         void color_handler ();
 110         void bypass_handler ();
 111         void pannable_handler ();
 112 };
 113
 114 #endif /* __gtk_ardour_stereo_panner_h__ */