1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
/* -*- 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 INCLUDED_VCL_REGION_HXX
#define INCLUDED_VCL_REGION_HXX
#include <tools/gen.hxx>
#include <tools/poly.hxx>
#include <vcl/dllapi.h>
#include <basegfx/polygon/b2dpolypolygon.hxx>
#include <memory>
#include <optional>
class RegionBand;
namespace vcl { class Window; }
class OutputDevice;
class Bitmap;
typedef std::vector< tools::Rectangle > RectangleVector;
namespace vcl {
class SAL_WARN_UNUSED VCL_DLLPUBLIC Region
{
private:
friend class ::OutputDevice;
friend class ::vcl::Window;
friend class ::Bitmap;
// possible contents
std::optional< basegfx::B2DPolyPolygon >
mpB2DPolyPolygon;
std::optional< tools::PolyPolygon >
mpPolyPolygon;
std::shared_ptr< RegionBand >
mpRegionBand;
bool mbIsNull : 1;
// helpers
SAL_DLLPRIVATE void ImplCreatePolyPolyRegion( const tools::PolyPolygon& rPolyPoly );
SAL_DLLPRIVATE void ImplCreatePolyPolyRegion( const basegfx::B2DPolyPolygon& rPolyPoly );
SAL_DLLPRIVATE tools::PolyPolygon ImplCreatePolyPolygonFromRegionBand() const;
SAL_DLLPRIVATE basegfx::B2DPolyPolygon ImplCreateB2DPolyPolygonFromRegionBand() const;
public:
explicit Region(bool bIsNull = false); // default creates empty region, with true a null region is created
explicit Region(const tools::Rectangle& rRect);
explicit Region(const tools::Polygon& rPolygon);
explicit Region(const tools::PolyPolygon& rPolyPoly);
explicit Region(const basegfx::B2DPolyPolygon&);
Region(const vcl::Region& rRegion);
Region(vcl::Region&& rRegion) noexcept;
~Region();
// direct access to contents
const std::optional<basegfx::B2DPolyPolygon>& getB2DPolyPolygon() const { return mpB2DPolyPolygon; }
const std::optional<tools::PolyPolygon>& getPolyPolygon() const { return mpPolyPolygon; }
const RegionBand* getRegionBand() const { return mpRegionBand.get(); }
// access with converters, the asked data will be created from the most
// valuable data, buffered and returned
tools::PolyPolygon GetAsPolyPolygon() const;
basegfx::B2DPolyPolygon GetAsB2DPolyPolygon() const;
const RegionBand* GetAsRegionBand() const;
// manipulators
void Move( tools::Long nHorzMove, tools::Long nVertMove );
void Scale( double fScaleX, double fScaleY );
void Union( const tools::Rectangle& rRegion );
void Intersect( const tools::Rectangle& rRegion );
void Exclude( const tools::Rectangle& rRegion );
void XOr( const tools::Rectangle& rRegion );
void Union( const vcl::Region& rRegion );
void Intersect( const vcl::Region& rRegion );
void Exclude( const vcl::Region& rRegion );
bool XOr( const vcl::Region& rRegion );
bool IsEmpty() const;
bool IsNull() const { return mbIsNull;}
void SetEmpty();
void SetNull();
bool IsRectangle() const;
tools::Rectangle GetBoundRect() const;
bool HasPolyPolygonOrB2DPolyPolygon() const { return (getB2DPolyPolygon() || getPolyPolygon()); }
void GetRegionRectangles(RectangleVector& rTarget) const;
bool Contains( const Point& rPoint ) const;
bool Overlaps( const tools::Rectangle& rRect ) const;
vcl::Region& operator=( const vcl::Region& rRegion );
vcl::Region& operator=( vcl::Region&& rRegion ) noexcept;
vcl::Region& operator=( const tools::Rectangle& rRect );
bool operator==( const vcl::Region& rRegion ) const;
bool operator!=( const vcl::Region& rRegion ) const { return !(Region::operator==( rRegion )); }
friend VCL_DLLPUBLIC SvStream& ReadRegion( SvStream& rIStm, vcl::Region& rRegion );
friend VCL_DLLPUBLIC SvStream& WriteRegion( SvStream& rOStm, const vcl::Region& rRegion );
/* workaround: faster conversion for PolyPolygons
* if half of the Polygons contained in rPolyPoly are actually
* rectangles, then the returned vcl::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 tools::PolyPolygon& ).
* Caution: this is only useful if the vcl::Region is known to be
* changed to rectangles; e.g. if being set as clip region
*/
static vcl::Region GetRegionFromPolyPolygon( const tools::PolyPolygon& rPolyPoly );
};
template< typename charT, typename traits >
inline std::basic_ostream<charT, traits> & operator <<(
std::basic_ostream<charT, traits> & stream, const Region& rRegion)
{
if (rRegion.IsEmpty())
return stream << "EMPTY";
if (rRegion.getB2DPolyPolygon())
return stream << "B2DPolyPolygon("
<< *rRegion.getB2DPolyPolygon()
<< ")";
if (rRegion.getPolyPolygon())
return stream << "PolyPolygon("
<< *rRegion.getPolyPolygon()
<< ")";
if (rRegion.getRegionBand())
{ // inlined because RegionBand is private to vcl
stream << "RegionBand(";
RectangleVector rects;
rRegion.GetRegionRectangles(rects);
if (rects.empty())
stream << "EMPTY";
for (size_t i = 0; i < rects.size(); ++i)
stream << "[" << i << "] " << rects[i];
stream << ")";
}
return stream;
}
} /* namespace vcl */
#endif // INCLUDED_VCL_REGION_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
