/usr/include/cairomm-1.0/cairomm/region.h is in libcairomm-1.0-dev 1.12.2-3.
This file is owned by root:root, with mode 0o644.
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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 | /* Copyright (C) 2010 The cairomm Development Team
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#ifndef __CAIROMM_REGION_H
#define __CAIROMM_REGION_H
#include <cairomm/types.h>
#include <cairomm/enums.h>
#include <cairomm/refptr.h>
#include <cairo.h>
#include <vector>
namespace Cairo
{
/**
* A simple graphical data type representing an area of integer-aligned
* rectangles. They are often used on raster surfaces to track areas of
* interest, such as change or clip areas
*
* It allows set-theoretical operations like union and intersect to be performed
* on them.
*
* @since: 1.10
**/
class Region
{
private:
Region();
explicit Region(const RectangleInt& rectangle);
explicit Region(const std::vector<RectangleInt>& rects);
Region(const RectangleInt *rects, int count);
public:
/** Create a C++ wrapper for the C instance. This C++ instance should then be given to a RefPtr.
* @param cobject The C instance.
* @param has_reference Whether we already have a reference. Otherwise, the constructor will take an extra reference.
*/
explicit Region(cairo_region_t* cobject, bool has_reference = false);
/** Creates an empty Region object */
static RefPtr<Region> create();
/** Creates a Region object containing @a rectangle */
static RefPtr<Region> create(const RectangleInt& rectangle);
/** Creates a Region object containing the union of all given @a rects */
static RefPtr<Region> create(const std::vector<RectangleInt>& rects);
/** Creates a Region object containing the union of all given @a rects */
static RefPtr<Region> create(const RectangleInt *rects, int count);
/** allocates a new region object copied from the original */
RefPtr<Region> copy() const;
virtual ~Region();
/** Gets the bounding rectangle of the region */
RectangleInt get_extents() const;
/** Gets the number of rectangles contained in the region */
int get_num_rectangles() const;
/** Gets the nth rectangle from the region */
RectangleInt get_rectangle(int nth_rectangle) const;
/** Checks whether the region is empty */
bool empty() const;
/** Checks whether @a rectangle is inside, outside, or partially contained in
* the region
*/
RegionOverlap contains_rectangle(const RectangleInt& rectangle) const;
/** Checks whether (x,y) is contained in the region */
bool contains_point(int x, int y) const;
/** Translates the region by (dx,dy) */
void translate(int dx, int dy);
/** Subtracts @a other from this region */
void subtract(const RefPtr<Region>& other);
/** Subtracts @a rectangle from this region */
void subtract(const RectangleInt& rectangle);
/** Sets the region to the intersection of this region with @a other */
void intersect(const RefPtr<Region>& other);
/** Sets the region to the intersection of this region with @a rectangle */
void intersect(const RectangleInt& rectangle);
//We don't call this method union() because that is a C++ keyword.
/** Sets this region to the union of the region with @a other */
void do_union(const RefPtr<Region>& other);
/** Sets this region to the union of the region with @a rectangle */
void do_union(const RectangleInt& rectangle);
/** Sets this region to the exclusive difference of the region with @a other.
* That is, the region will contain all areas that are in the original region
* or in @a other, but not in both */
void do_xor(const RefPtr<Region>& other);
/** Sets this region to the exclusive difference of the region with @a
* rectangle. That is, the region will contain all areas that are in the
* original region or in @a rectangle, but not in both */
void do_xor(const RectangleInt& rectangle);
typedef cairo_region_t cobject;
inline cobject* cobj() { return m_cobject; }
inline const cobject* cobj() const { return m_cobject; }
#ifndef DOXYGEN_IGNORE_THIS
///For use only by the cairomm implementation.
inline ErrorStatus get_status() const
{ return cairo_region_status(const_cast<cairo_region_t*>(cobj())); }
#endif //DOXYGEN_IGNORE_THIS
void reference() const;
void unreference() const;
protected:
cobject* m_cobject;
};
} // namespace Cairo
#endif //__CAIROMM_REGION_H
// vim: ts=2 sw=2 et
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