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    Copyright (C) 2004 Paul Davis

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

    $Id: panner_ui.h,v 1.2 2005/03/31 20:21:27 pauld Exp $

#ifndef __ardour_gtk_panner_ui_h__
#define __ardour_gtk_panner_ui_h__

#include <vector>
#include <gtk--.h>
#include <gtkmmext/slider_controller.h>
#include <gtkmmext/click_box.h>

#include "enums.h"

class Panner2d;

namespace ARDOUR {
      class IO;
      class Session;
namespace Gtkmmext {
      class FastMeter;
      class BarController;

class PannerUI : public Gtk::HBox
      PannerUI (ARDOUR::IO&, ARDOUR::Session&);
      ~PannerUI ();

      void pan_changed (void *);

      void update_pan_sensitive ();
      void update_gain_sensitive ();

      void set_width (Width);
      void setup_pan ();

      void effective_pan_display ();

      void set_meter_strip_name (string name);

      ARDOUR::IO& _io;
      ARDOUR::Session& _session;

      bool ignore_toggle;
      bool in_pan_update;

      Panner2d*   panner;

      Gtk::VBox           pan_bar_packer;
      Gtk::Viewport       panning_viewport;
      Gtk::EventBox       panning_up;
      Gtk::Arrow          panning_up_arrow;
      Gtk::EventBox       panning_down;
      Gtk::Arrow          panning_down_arrow;
      Gtk::VBox           pan_vbox;
      Width              _width;

      gint panning_scroll_button_press_event (GdkEventButton*, int32_t dir);
      gint panning_scroll_button_release_event (GdkEventButton*, int32_t dir);
      Gtk::ToggleButton   panning_link_button;
      Gtk::Button         panning_link_direction_button;
      Gtk::HBox           panning_link_box;

      gint panning_link_button_press (GdkEventButton*);
      gint panning_link_button_release (GdkEventButton*);
      void panning_link_direction_clicked ();

      vector<Gtk::Adjustment*> pan_adjustments;
      vector<Gtkmmext::BarController*> pan_bars;

      void pan_adjustment_changed (uint32_t which);
      void pan_value_changed (uint32_t which);
      void pan_printer (char* buf, uint32_t, Gtk::Adjustment*);
      void update_pan_bars (bool only_if_aplay);
      void update_pan_linkage ();
      void update_pan_state ();

      void panner_changed ();
      void hide_pans ();

      void panner_moved (int which);
      void panner_bypass_toggled ();

      gint start_pan_touch (GdkEventButton*);
      gint end_pan_touch (GdkEventButton*);

      gint entry_focus_event (GdkEventFocus* ev);

      gint pan_button_event (GdkEventButton*, uint32_t which);
      Gtk::Menu* pan_menu;
      Gtk::CheckMenuItem* bypass_menu_item;
      void build_pan_menu (uint32_t which);
      void pan_mute (uint32_t which);
      void pan_reset ();
      void pan_bypass_toggle ();

#endif /* __ardour_gtk_panner_ui_h__ */

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