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/*************************************************************************
 *
 *  OpenOffice.org - a multi-platform office productivity suite
 *
 *  $RCSfile: grid.hxx,v $
 *
 *  $Revision: 1.4 $
 *
 *  last change: $Author: kz $ $Date: 2006/12/12 16:44:01 $
 *
 *  The Contents of this file are made available subject to
 *  the terms of GNU Lesser General Public License Version 2.1.
 *
 *
 *    GNU Lesser General Public License Version 2.1
 *    =============================================
 *    Copyright 2005 by Sun Microsystems, Inc.
 *    901 San Antonio Road, Palo Alto, CA 94303, USA
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License version 2.1, as published by the Free Software Foundation.
 *
 *    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
 *    Lesser General Public License for more details.
 *
 *    You should have received a copy of the GNU Lesser 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
 *
 ************************************************************************/
#ifndef _EXTENSIONS_SCANNER_GRID_HXX
#define _EXTENSIONS_SCANNER_GRID_HXX

#ifndef _SV_WINDOW_HXX  
#include <vcl/window.hxx>
#endif
#ifndef _SV_BUTTON_HXX
#include <vcl/button.hxx>
#endif
#ifndef _SV_LSTBOX_HXX
#include <vcl/lstbox.hxx>
#endif
#ifndef _SV_DIALOG_HXX
#include <vcl/dialog.hxx>
#endif

class GridWindow : public ModalDialog
{
        // helper class for handles
        struct impHandle
        {
                Point                   maPos;
                sal_uInt16              mnOffX;
                sal_uInt16              mnOffY;

                impHandle(const Point& rPos, sal_uInt16 nX, sal_uInt16 nY) 
                :       maPos(rPos), mnOffX(nX), mnOffY(nY) 
                {
                }
                
                bool operator<(const impHandle& rComp) const 
                { 
                        return (maPos.X() < rComp.maPos.X()); 
                }

                void draw(Window& rWin, const BitmapEx& rBitmapEx) 
                {
                        const Point aOffset(rWin.PixelToLogic(Point(mnOffX, mnOffY)));
                        rWin.DrawBitmapEx(maPos - aOffset, rBitmapEx);
                }

                bool isHit(Window& rWin, const Point& rPos)
                {
                        const Point aOffset(rWin.PixelToLogic(Point(mnOffX, mnOffY)));
                        const Rectangle aTarget(maPos - aOffset, maPos + aOffset);
                        return aTarget.IsInside(rPos);
                }
        };

        Rectangle               m_aGridArea;

        double                  m_fMinX;
        double                  m_fMinY;
        double                  m_fMaxX;
        double                  m_fMaxY;

        double                  m_fChunkX;
        double                  m_fMinChunkX;
        double                  m_fChunkY;
        double                  m_fMinChunkY;

        double*                 m_pXValues;
        double*                 m_pOrigYValues;
        int                             m_nValues;
        double*                 m_pNewYValues;

        sal_uInt16              m_BmOffX;
        sal_uInt16              m_BmOffY;

        BOOL                    m_bCutValues;

        // stuff for handles
        std::vector< impHandle >        m_aHandles;
        sal_uInt32                                      m_nDragIndex;

        BitmapEx                m_aMarkerBitmap;

        OKButton                m_aOKButton;
        CancelButton    m_aCancelButton;

        ListBox                 m_aResetTypeBox;
        PushButton              m_aResetButton;


        Point transform( double x, double y );
        void transform( const Point& rOriginal, double& x, double& y );

        double findMinX();
        double findMinY();
        double findMaxX();
        double findMaxY();

        void drawGrid();
        void drawOriginal();
        void drawNew();
        void drawHandles();

        void computeExtremes();
        void computeChunk( double fMin, double fMax, double& fChunkOut, double& fMinChunkOut );
        void computeNew();
        double interpolate( double x, double* pNodeX, double* pNodeY, int nNodes );

        DECL_LINK( ClickButtonHdl, Button* );

        virtual void MouseMove( const MouseEvent& );
        virtual void MouseButtonDown( const MouseEvent& );
        virtual void MouseButtonUp( const MouseEvent& );
public:
        GridWindow( double* pXValues, double* pYValues, int nValues,
                                Window* pParent, BOOL bCutValues = TRUE );
        ~GridWindow();

        void setBoundings( double fMinX, double fMinY, double fMaxX, double fMaxY );
        double getMinX() { return m_fMinX; }
        double getMinY() { return m_fMinY; }
        double getMaxX() { return m_fMaxX; }
        double getMaxY() { return m_fMaxY; }

        int countValues() { return m_nValues; }
        double* getXValues() { return m_pXValues; }
        double* getOrigYValues() { return m_pOrigYValues; }
        double* getNewYValues() { return m_pNewYValues; }

        void drawPoint( double x, double y );
        void drawLine( double x1, double y1, double x2, double y2 );

        virtual void Paint( const Rectangle& rRect );
};

#endif // _EXTENSIONS_SCANNER_GRID_HXX

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