// ========================================================================================
//	TSplitter.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 __TSplitter__
#define __TSplitter__

#include "TWindow.h"

class TDrawContext;


class TSplitter : public TWindow
{
public:
						TSplitter(TWindow* parent, const TRect& bounds,
									  bool vertical, bool liveDrag = true, float ratio = 0.5);

	void				SetChildren(TWindow* child1, TWindow* child2);

	void				GetChild1Rect(TRect& rect) const;
	void				GetChild2Rect(TRect& rect) const;
	void				GetSplitterRect(float ratio, TRect& rect) const;

	virtual void		Create();

protected:				
	virtual				~TSplitter();

	void				ResizeChildren();

	virtual void		Draw(TRegion* clip);
	virtual void		DoMouseDown(const TPoint& point, TMouseButton button, TModifierState state);
	virtual void		DoMouseUp(const TPoint& point, TMouseButton button, TModifierState state);
	virtual void		DoMouseMoved(const TPoint& point, TModifierState state);

	void				ConstrainMouse(const TPoint& mouse, TPoint& newPoint);

	void				GetTrackingRect(const TPoint& point, TRect& rect);
	void				DrawTrackingRect(const TRect& rect);
	void				DrawSplitterRect(TDrawContext& context);

	virtual void		NotifyBoundsChanged(const TRect& oldBounds);

protected:
	TWindow*			fChild1;
	TWindow*			fChild2;
	bool				fVertical;
	float				fRatio;		// position of splitter, between 0 and 1
	bool				fTracking;	// true if we are tracking the mouse
	TPoint				fLastMouse;
	bool				fLiveDrag;
};

#endif // __TSplitter__