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/*************************************************************************
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: regband.hxx,v $
*
* $Revision: 1.2 $
*
* last change: $Author: vg $ $Date: 2007-04-11 18:04:26 $
*
* 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 _SV_REGBAND_HXX
#define _SV_REGBAND_HXX
#ifndef _SV_SV_H
#include <vcl/sv.h>
#endif
#ifndef _TL_POLY_HXX
#include <tools/poly.hxx>
#endif
/* =======================================================================
class ImplRegionBand
This class handles one y-band of the region. In this band may contain one
or more seprarations in x-direction. The y-Band do not contain any
separation after creation.
The separations are modified with basic clipping functions like Union and
Intersection - the Class will process the clipping for the actual band.
The actual separations may be checked by functions like IsInside or
IsOver.
======================================================================= */
// ------------------------
// - ImplRegionBand-Types -
// ------------------------
// element for the list with x-separations
struct ImplRegionBandSep
{
ImplRegionBandSep* mpNextSep;
long mnXLeft;
long mnXRight;
BOOL mbRemoved;
};
enum LineType { LINE_ASCENDING, LINE_DESCENDING, LINE_HORIZONTAL };
// element for the list with x-separations
struct ImplRegionBandPoint
{
ImplRegionBandPoint* mpNextBandPoint;
long mnX;
long mnLineId;
BOOL mbEndPoint;
LineType meLineType;
};
// ------------------
// - ImplRegionBand -
// ------------------
class ImplRegionBand
{
public:
ImplRegionBand* mpNextBand; // pointer to the next element of the list
ImplRegionBand* mpPrevBand; // pointer to the previous element of the list (only used temporaery)
ImplRegionBandSep* mpFirstSep; // root of the list with x-separations
ImplRegionBandPoint* mpFirstBandPoint; // root of the list with lines
long mnYTop; // actual boundary of the band
long mnYBottom;
BOOL mbTouched;
// create y-band with boundaries
ImplRegionBand( long nYTop, long nYBottom );
// copy y-band with with all data
ImplRegionBand( const ImplRegionBand & theSourceBand );
~ImplRegionBand();
long GetXLeftBoundary() const;
long GetXRightBoundary() const;
// combine overlapping bands
BOOL OptimizeBand();
// generate separations from lines and process
// union with existing separations
void ProcessPoints();
// insert point in the list for later processing
BOOL InsertPoint( long nX, long nLineID,
BOOL bEndPoint, LineType eLineType );
void Union( long nXLeft, long nXRight );
void Intersect( long nXLeft, long nXRight );
void Exclude( long nXLeft, long nXRight );
void XOr( long nXLeft, long nXRight );
void MoveX( long nHorzMove );
void ScaleX( double fHorzScale );
BOOL IsInside( long nX );
BOOL IsInside( long nLeft, long nRight );
BOOL IsOver( long nLeft, long nRight );
BOOL IsEmpty() const { return ((!mpFirstSep) && (!mpFirstBandPoint)); }
BOOL operator==( const ImplRegionBand& rRegionBand ) const;
};
#endif // _SV_REGBAND_HXX
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