/*
  header-container.hpp  -  Declaration of the header container widget
 
  Copyright (C)         Lumiera.org
    2008,               Joel Holdsworth <joel@airwebreathe.org.uk>
 
  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
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  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.
 
*/
/** @file header-container.hpp
 ** This file contains the definition of the header container
 ** widget
 */

#ifndef HEADER_CONTAINER_HPP
#define HEADER_CONTAINER_HPP

#include <gtkmm.h>
#include <vector>

namespace lumiera {
namespace gui {
namespace widgets {

class TimelineWidget;

namespace timeline {

class HeaderContainer : public Gtk::Container
  {
  public:
    HeaderContainer(lumiera::gui::widgets::TimelineWidget *timeline_widget);
    
    void update_headers();

  private:
    void on_realize();
    void on_unrealize();
  
    void on_size_allocate (Gtk::Allocation& allocation);
    void on_size_request (Gtk::Requisition* requisition);
        
    void forall_vfunc(gboolean include_internals, GtkCallback callback,
                      gpointer callback_data);
                     
    void on_scroll();
      
    /* ===== Internals ===== */
  private:
    void layout_headers();
    
  private:
    lumiera::gui::widgets::TimelineWidget *timelineWidget;
    std::vector< Glib::RefPtr<Gtk::Widget> > rootHeaders;

    Glib::RefPtr<Gdk::Window> gdkWindow;
  };

}   // namespace timeline
}   // namespace widgets
}   // namespace gui
}   // namespace lumiera

#endif // HEADER_CONTAINER_HPP