// ========================================================================================
//	TScroller.h		 			Copyright (C) 2001-2002 Mike Lockwood. All rights reserved.
// ========================================================================================
/*
	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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/

#ifndef __TScroller__
#define __TScroller__

#include "TWindow.h"

class TView;
class TScrollBar;


class TScroller : public TWindow
{
public:
							TScroller(TWindow* parent, const TRect& bounds, 
										bool horizScrollBar, bool vertScrollBar);

	virtual void			Create();

	void					SetContainedView(TView* view);

protected:
	virtual					~TScroller();

	virtual void			DoMapped(bool mapped);

	void					GetChildBounds(TRect& bounds) const;

	virtual void			RemoveChild(TWindow* child);

	virtual bool			DoCommand(TCommandHandler* sender, TCommandHandler* receiver, TCommandID command);
	virtual void			AdjustScrollBars(TView* view);
	virtual void			ChildScrollChanged(TView* child, TCoord deltaH, TCoord deltaV);	

	virtual void			Draw(TRegion* clip);
	virtual void			DoScrollWheel(bool down);

protected:
	TView*					fContainedView;
	TScrollBar*				fHorizScrollBar;
	TScrollBar*				fVertScrollBar;
	bool					fHasHorizScrollBar;
	bool					fHasVertScrollBar;
	bool					fNeedsAdjust;
};

#endif // __TScroller__