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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef _SV_REGION_HXX
#define _SV_REGION_HXX
#include <tools/gen.hxx>
#include <tools/solar.h>
#include <vcl/dllapi.h>
#include <basegfx/polygon/b2dpolypolygon.hxx>
class ImplRegion;
class ImplRegionBand;
class Polygon;
class PolyPolygon;
struct ImplRegionInfo;
// --------------
// - RegionType -
// --------------
enum RegionType { REGION_NULL, REGION_EMPTY, REGION_RECTANGLE, REGION_COMPLEX };
enum RegionOverlapType { REGION_INSIDE, REGION_OVER, REGION_OUTSIDE };
typedef sal_IntPtr RegionHandle;
// ----------
// - Region -
// ----------
class VCL_DLLPUBLIC Region
{
friend class OutputDevice;
friend class Window;
friend class Bitmap;
private:
ImplRegion* mpImplRegion;
SAL_DLLPRIVATE void ImplCopyData();
SAL_DLLPRIVATE void ImplCreateRectRegion( const Rectangle& rRect );
SAL_DLLPRIVATE void ImplCreatePolyPolyRegion( const PolyPolygon& rPolyPoly );
SAL_DLLPRIVATE void ImplCreatePolyPolyRegion( const basegfx::B2DPolyPolygon& rPolyPoly );
SAL_DLLPRIVATE void ImplPolyPolyRegionToBandRegionFunc();
SAL_DLLPRIVATE inline void ImplPolyPolyRegionToBandRegion();
SAL_DLLPRIVATE const ImplRegion* ImplGetImplRegion() const { return mpImplRegion; }
SAL_DLLPRIVATE ImplRegion* ImplGetImplRegion() { return mpImplRegion; }
SAL_DLLPRIVATE void ImplBeginAddRect( );
SAL_DLLPRIVATE sal_Bool ImplAddRect( const Rectangle& rRect );
SAL_DLLPRIVATE void ImplEndAddRect( );
SAL_DLLPRIVATE void ImplIntersectWithPolyPolygon( const Region& );
SAL_DLLPRIVATE void ImplExcludePolyPolygon( const Region& );
SAL_DLLPRIVATE void ImplUnionPolyPolygon( const Region& );
SAL_DLLPRIVATE void ImplXOrPolyPolygon( const Region& );
public: // public within vcl
VCL_PLUGIN_PUBLIC bool ImplGetFirstRect( ImplRegionInfo& rImplRegionInfo,
long& nX, long& nY, long& nWidth, long& nHeight ) const;
VCL_PLUGIN_PUBLIC bool ImplGetNextRect( ImplRegionInfo& rImplRegionInfo,
long& nX, long& nY, long& nWidth, long& nHeight ) const;
#ifdef DBG_UTIL
friend const char* ImplDbgTestRegion( const void* pObj );
#endif
public:
explicit Region();
explicit Region( RegionType eType );
explicit Region( const Rectangle& rRect );
explicit Region( const Polygon& rPolygon );
explicit Region( const PolyPolygon& rPolyPoly );
explicit Region( const basegfx::B2DPolyPolygon& );
Region( const Region& rRegion );
~Region();
void Move( long nHorzMove, long nVertMove );
void Scale( double fScaleX, double fScaleY );
void Union( const Rectangle& rRegion );
void Intersect( const Rectangle& rRegion );
void Exclude( const Rectangle& rRegion );
void XOr( const Rectangle& rRegion );
void Union( const Region& rRegion );
void Intersect( const Region& rRegion );
void Exclude( const Region& rRegion );
void XOr( const Region& rRegion );
RegionType GetType() const;
sal_Bool IsEmpty() const { return GetType() == REGION_EMPTY; };
sal_Bool IsNull() const { return GetType() == REGION_NULL; };
void SetEmpty();
void SetNull();
Rectangle GetBoundRect() const;
sal_Bool HasPolyPolygon() const;
PolyPolygon GetPolyPolygon() const;
// returns an empty polypolygon in case HasPolyPolygon is sal_False
const basegfx::B2DPolyPolygon GetB2DPolyPolygon() const;
// returns a PolyPolygon either copied from the set PolyPolygon region
// or created from the constituent rectangles
basegfx::B2DPolyPolygon ConvertToB2DPolyPolygon();
sal_uLong GetRectCount() const;
RegionHandle BeginEnumRects();
sal_Bool GetEnumRects( RegionHandle hRegionHandle, Rectangle& rRect );
sal_Bool GetNextEnumRect( RegionHandle hRegionHandle, Rectangle& rRect )
{ return GetEnumRects( hRegionHandle, rRect ); }
void EndEnumRects( RegionHandle hRegionHandle );
sal_Bool IsInside( const Point& rPoint ) const;
sal_Bool IsInside( const Rectangle& rRect ) const;
sal_Bool IsOver( const Rectangle& rRect ) const;
Region& operator=( const Region& rRegion );
Region& operator=( const Rectangle& rRect );
sal_Bool operator==( const Region& rRegion ) const;
sal_Bool operator!=( const Region& rRegion ) const
{ return !(Region::operator==( rRegion )); }
friend VCL_DLLPUBLIC SvStream& operator>>( SvStream& rIStm, Region& rRegion );
friend VCL_DLLPUBLIC SvStream& operator<<( SvStream& rOStm, const Region& rRegion );
/* workaround: faster conversion for PolyPolygons
* if half of the Polygons contained in rPolyPoly are actually
* rectangles, then the returned Region will be constructed by
* XOr'ing the contained Polygons together; in the case of
* only Rectangles this can be up to eight times faster than
* Region( const PolyPolygon& ).
* Caution: this is only useful if the Region is known to be
* changed to rectangles; e.g. if being set as clip region
*/
static Region GetRegionFromPolyPolygon( const PolyPolygon& rPolyPoly );
};
#endif // _SV_REGION_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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