/***************************************************************************
                          SIMPLY POWERFUL TOOLKIT (SPTK)
                          CSplitter.h  -  description
                             -------------------
    begin                : Tue Jan 27 2004
    copyright            : (C) 2002-2006 by Alexey S.Parshin
    email                : alexeyp@gmail.com
 ***************************************************************************/

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

   This library 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 Library
   General Public License for more details.

   You should have received a copy of the GNU Library General Public License
   along with this library; if not, write to the Free Software Foundation, 
   Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.

   Please report all bugs and problems to "alexeyp@gmail.com"
 ***************************************************************************/

#ifndef __CSPLITTER_H__
#define __CSPLITTER_H__

#include <sptk3/sptk.h>
#include <sptk3/CDataControl.h>

namespace sptk {

   /// @addtogroup gui GUI Classes
   /// @{

   /// @brief Splitter widget
   ///
   /// CSplitter implements 'grab and resize' bar. 
   /// It works only with SPTK-style widgets derived from CLayoutClient,
   /// and placed on a group derived from CLayoutManager (CGroup,CScroll).
	class CSplitter : public CBox {
		Fl_Widget      *m_chainedWidget;           /// Pointer on the widget that will be resized
		CLayoutClient  *m_chainedWidgetLayout;     /// Pointer on the CLayoutClient of the resized widget
		bool            m_dragging;                /// The flag indicating the dragging state
		int             m_lastDragX;               /// Where did we grab the bar (x-coordinate) ? 
		int             m_lastDragY;               /// Where did we grab the bar (y-coordinate) ? 
	protected:
		void findChainedControl();                 /// After the splitter is grabbed finds out which widget is resizing
	public:
      /// Constructor in SPTK style
      /// @param label const char *, label
      /// @param layoutSize int, widget align in layout
      /// @param layoutAlign CLayoutAlign, widget align in layout
		CSplitter(const char * label=0,int layoutSize=10,CLayoutAlign layoutAlign=SP_ALIGN_TOP);

      /// Custom handle() method to process widget-specific events
		int handle(int event);
	};	
   /// @}
}
#endif
