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+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2008 by Sun Microsystems, Inc.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * $RCSfile: polyscan.hxx,v $
+ * $Revision: 1.3 $
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org 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 version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org. If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#ifndef _SV_POLYSCAN_HXX
+#define _SV_POLYSCAN_HXX
+
+#include <tools/gen.hxx>
+
+// -----------------
+// - ScanlinePoint -
+// -----------------
+
+struct ScanlinePoint
+{
+ long mnX;
+ ScanlinePoint* mpNext;
+
+ ScanlinePoint() : mnX( 0L ), mpNext( NULL ) {};
+ ScanlinePoint( long nX, ScanlinePoint* pNext ) : mnX( nX ), mpNext( pNext ) {};
+ ~ScanlinePoint() {};
+
+ void Set( long nX, ScanlinePoint* pNext ) { mnX = nX, mpNext = pNext; }
+};
+
+// -------------------
+// - PolyScanSegment -
+// -------------------
+
+struct PolyScanSegment
+{
+ long mnStart;
+ long mnEnd;
+
+ PolyScanSegment() : mnStart( 0L ), mnEnd( 0L ) {};
+ PolyScanSegment( long nStart, long nEnd ) : mnStart( nStart ), mnEnd( nEnd ) {};
+ ~PolyScanSegment() {};
+};
+
+// ----------------
+// - PolyScanline -
+// ----------------
+
+struct ScanlinePoint;
+class Polygon;
+class PolyPolygon;
+
+class PolyScanline
+{
+private:
+
+ ScanlinePoint* mpFirst;
+ ScanlinePoint* mpLast;
+ ScanlinePoint* mpAct;
+ long mnLeft;
+ long mnRight;
+
+ void ImplDelete();
+
+public:
+
+ PolyScanline();
+ ~PolyScanline();
+
+ void Insert( long nX );
+ void Set( long nStart, long nEnd );
+ void Set( const PolyScanSegment& rSegment ) { Set( rSegment.mnStart, rSegment.mnEnd ); }
+
+ inline BOOL GetFirstX( long& rX );
+ inline BOOL GetNextX( long& rX );
+
+ BOOL GetFirstSegment( PolyScanSegment& rSegment );
+ BOOL GetNextSegment( PolyScanSegment& rSegment );
+};
+
+// ------------------------------------------------------------------------
+
+inline BOOL PolyScanline::GetFirstX( long& rX )
+{
+ mpAct = mpFirst;
+ return( mpAct ? ( rX = mpAct->mnX, mpAct = mpAct->mpNext, TRUE ) : FALSE );
+}
+
+// ------------------------------------------------------------------------
+
+inline BOOL PolyScanline::GetNextX( long& rX )
+{
+ return( mpAct ? ( rX = mpAct->mnX, mpAct = mpAct->mpNext, TRUE ) : FALSE );
+}
+
+// ---------------
+// - PolyScanner -
+// ---------------
+
+class PolyScanner
+{
+private:
+
+ PolyScanline* mpArray;
+ long mnLeft;
+ long mnTop;
+ long mnRight;
+ long mnBottom;
+
+ PolyScanner() {};
+
+protected:
+
+ void InsertLine( const Point& rStart, const Point& rEnd );
+
+public:
+
+ PolyScanner( const Rectangle& rRect );
+ PolyScanner( const Polygon& rPoly );
+ PolyScanner( const PolyPolygon& rPolyPoly );
+ ~PolyScanner();
+
+ long Left() const { return mnLeft; }
+ long Top() const { return mnTop; }
+ long Right() const { return mnRight; }
+ long Bottom() const { return mnBottom; }
+
+ long Width() const { return( mnRight - mnLeft + 1L ); }
+ long Height() const { return( mnBottom - mnTop + 1L ); }
+
+ Rectangle GetBoundRect() const { return Rectangle( mnLeft, mnTop, mnRight, mnBottom ); }
+
+ ULONG Count() const { return Height(); }
+ PolyScanline* operator[]( ULONG nPos ) const;
+};
+
+#endif // _SV_POLYSCAN_HXX