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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
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 3 : const XPolygon& operator[]( sal_uInt16 nPos ) const
148 3 : { 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: */
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