gtk2_ardour/automation_controller.h

   1 /*
   2     Copyright (C) 2007 Paul Davis
   3     Author: Dave Robillard
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18
  19 */
  20
  21 #ifndef __ardour_gtk_automation_controller_h__
  22 #define __ardour_gtk_automation_controller_h__
  23
  24 #include <boost/shared_ptr.hpp>
  25 #include <gtkmm.h>
  26
  27 #include "gtkmm2ext/barcontroller.h"
  28 #include "pbd/signals.h"
  29
  30 namespace ARDOUR {
  31         class Session;
  32         class AutomationList;
  33         class AutomationControl;
  34         class Automatable;
  35 }
  36
  37 /** A BarController which displays the value and allows control of an AutomationControl */
  38 class AutomationController : public Gtkmm2ext::BarController {
  39 public:
  40         static boost::shared_ptr<AutomationController> create(
  41                         boost::shared_ptr<ARDOUR::Automatable> parent,
  42                         const Evoral::Parameter& param,
  43                         boost::shared_ptr<ARDOUR::AutomationControl> ac);
  44
  45         ~AutomationController();
  46
  47         boost::shared_ptr<ARDOUR::AutomationControl> controllable() { return _controllable; }
  48
  49         Gtk::Adjustment* adjustment() { return _adjustment; }
  50
  51         void display_effective_value();
  52         void value_adjusted();
  53
  54         void stop_updating ();
  55
  56 private:
  57         AutomationController (boost::shared_ptr<ARDOUR::AutomationControl> ac, Gtk::Adjustment* adj);
  58         std::string get_label (int&);
  59
  60         void start_touch();
  61         void end_touch();
  62
  63         void value_changed();
  64         void automation_state_changed();
  65
  66         bool                                         _ignore_change;
  67         boost::shared_ptr<ARDOUR::AutomationControl> _controllable;
  68         Gtk::Adjustment*                             _adjustment;
  69         sigc::connection                             _screen_update_connection;
  70         PBD::ScopedConnection                        _changed_connection;
  71 };
  72
  73
  74 #endif /* __ardour_gtk_automation_controller_h__ */