include/svx/xpoly.hxx

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  19 #ifndef INCLUDED_SVX_XPOLY_HXX
  20 #define INCLUDED_SVX_XPOLY_HXX
  21
  22 #include <basegfx/polygon/b2dpolypolygon.hxx>
  23 #include <svx/svxdllapi.h>
  24
  25 class Point;
  26 class Rectangle;
  27 class SvStream;
  28 class Polygon;
  29 namespace tools { class PolyPolygon; }
  30 class OutputDevice;
  31
  32 #define XPOLYPOLY_APPEND     0xFFFF
  33 #define XPOLY_APPEND         0xFFFF
  34
  35
  36 // point-styles in XPolygon:
  37 // NORMAL : start-/endpoint of a curve or a line
  38 // SMOOTH : smooth transition between curves
  39 // SYMMTR : smooth and symmetrical transition between curves
  40 // CONTROL: control handles of a  Bezier curve
  41
  42 enum XPolyFlags { XPOLY_NORMAL, XPOLY_SMOOTH, XPOLY_CONTROL, XPOLY_SYMMTR };
  43
  44 // Class XPolygon;has a point-array and a flag-array, which contains information about a particular point
  45
  46 class ImpXPolygon;
  47
  48 class SVX_DLLPUBLIC XPolygon
  49 {
  50 protected:
  51     ImpXPolygon*    pImpXPolygon;
  52
  53     // check ImpXPolygon-ReferenceCount and decouple if necessary
  54     void    CheckReference();
  55
  56     // auxiliary functions for Bezier conversion
  57     void    SubdivideBezier(sal_uInt16 nPos, bool bCalcFirst, double fT);
  58     void    GenBezArc(const Point& rCenter, long nRx, long nRy,
  59                       long nXHdl, long nYHdl, sal_uInt16 nStart, sal_uInt16 nEnd,
  60                       sal_uInt16 nQuad, sal_uInt16 nFirst);
  61     static bool CheckAngles(sal_uInt16& nStart, sal_uInt16 nEnd, sal_uInt16& nA1, sal_uInt16& nA2);
  62
  63 public:
  64     XPolygon( sal_uInt16 nSize=16, sal_uInt16 nResize=16 );
  65     XPolygon( const XPolygon& rXPoly );
  66     XPolygon( const Polygon& rPoly );
  67     XPolygon( const Rectangle& rRect, long nRx = 0, long nRy = 0 );
  68     XPolygon( const Point& rCenter, long nRx, long nRy,
  69               sal_uInt16 nStartAngle = 0, sal_uInt16 nEndAngle = 3600,
  70               bool bClose = true );
  71
  72     ~XPolygon();
  73
  74     sal_uInt16      GetSize() const;
  75
  76     void        SetPointCount( sal_uInt16 nPoints );
  77     sal_uInt16      GetPointCount() const;
  78
  79     void        Insert( sal_uInt16 nPos, const Point& rPt, XPolyFlags eFlags );
  80     void        Insert( sal_uInt16 nPos, const XPolygon& rXPoly );
  81     void        Remove( sal_uInt16 nPos, sal_uInt16 nCount );
  82     void        Move( long nHorzMove, long nVertMove );
  83     Rectangle   GetBoundRect() const;
  84
  85     const Point&    operator[]( sal_uInt16 nPos ) const;
  86           Point&    operator[]( sal_uInt16 nPos );
  87     XPolygon&       operator=( const XPolygon& rXPoly );
  88     bool            operator==( const XPolygon& rXPoly ) const;
  89     bool            operator!=( const XPolygon& rXPoly ) const;
  90
  91     XPolyFlags  GetFlags( sal_uInt16 nPos ) const;
  92     void        SetFlags( sal_uInt16 nPos, XPolyFlags eFlags );
  93     bool        IsControl(sal_uInt16 nPos) const;
  94     bool        IsSmooth(sal_uInt16 nPos) const;
  95
  96     // distance between two points
  97     double  CalcDistance(sal_uInt16 nP1, sal_uInt16 nP2);
  98
  99     // Bezier conversion
 100     void CalcSmoothJoin(sal_uInt16 nCenter, sal_uInt16 nDrag, sal_uInt16 nPnt);
 101     void CalcTangent(sal_uInt16 nCenter, sal_uInt16 nPrev, sal_uInt16 nNext);
 102     void PointsToBezier(sal_uInt16 nFirst);
 103
 104     // transformations
 105     void Translate(const Point& rTrans);
 106     void Scale(double fSx, double fSy);
 107     void Distort(const Rectangle& rRefRect, const XPolygon& rDistortedRect);
 108
 109     // #116512# convert to basegfx::B2DPolygon and return
 110     basegfx::B2DPolygon getB2DPolygon() const;
 111
 112     // #116512# constructor to convert from basegfx::B2DPolygon
 113      // #i76339# made explicit
 114      explicit XPolygon(const basegfx::B2DPolygon& rPolygon);
 115 };
 116
 117 // Class XPolyPolygon; like PolyPolygon, composed of XPolygons instead of Polygons
 118
 119 class ImpXPolyPolygon;
 120
 121 class SVX_DLLPUBLIC XPolyPolygon
 122 {
 123 protected:
 124     ImpXPolyPolygon* pImpXPolyPolygon;
 125
 126     // check ImpXPolyPolygon-ReferenceCount and decouple if necessary
 127     void    CheckReference();
 128
 129 public:
 130                     XPolyPolygon( sal_uInt16 nInitSize = 16, sal_uInt16 nResize = 16 );
 131                     XPolyPolygon( const XPolyPolygon& rXPolyPoly );
 132
 133                     ~XPolyPolygon();
 134
 135     void            Insert( const XPolygon& rXPoly,
 136                             sal_uInt16 nPos = XPOLYPOLY_APPEND );
 137     void            Insert( const XPolyPolygon& rXPoly,
 138                             sal_uInt16 nPos=XPOLYPOLY_APPEND );
 139     XPolygon        Remove( sal_uInt16 nPos );
 140     const XPolygon& GetObject( sal_uInt16 nPos ) const;
 141
 142     void            Clear();
 143     sal_uInt16          Count() const;
 144
 145     Rectangle       GetBoundRect() const;
 146
 147     const XPolygon& operator[]( sal_uInt16 nPos ) const
 148                         { return GetObject( nPos ); }
 149     XPolygon&       operator[]( sal_uInt16 nPos );
 150
 151     XPolyPolygon&   operator=( const XPolyPolygon& rXPolyPoly );
 152     bool            operator==( const XPolyPolygon& rXPolyPoly ) const;
 153     bool            operator!=( const XPolyPolygon& rXPolyPoly ) const;
 154
 155     // transformations
 156     void Distort(const Rectangle& rRefRect, const XPolygon& rDistortedRect);
 157
 158     // #116512# convert to basegfx::B2DPolyPolygon and return
 159     basegfx::B2DPolyPolygon getB2DPolyPolygon() const;
 160
 161     // #116512# constructor to convert from basegfx::B2DPolyPolygon
 162      // #i76339# made explicit
 163      explicit XPolyPolygon(const basegfx::B2DPolyPolygon& rPolyPolygon);
 164 };
 165
 166 #endif // INCLUDED_SVX_XPOLY_HXX
 167
 168 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */