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/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This software 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
// Cross-platform Region class based on the X11 region implementation
#ifndef __RFB_REGION_INCLUDED__
#define __RFB_REGION_INCLUDED__
#include <rfb/Rect.h>
#include <vector>
struct _XRegion;
namespace rfb {
struct ShortRect {
short x1, y1, x2, y2;
};
class Region {
public:
// Create an empty region
Region();
// Create a rectangular region
Region(const Rect& r);
Region(const Region& r);
Region &operator=(const Region& src);
~Region();
// the following methods alter the region in place:
void clear();
void reset(const Rect& r);
void translate(const rfb::Point& delta);
void setOrderedRects(const std::vector<Rect>& rects);
void setExtentsAndOrderedRects(const ShortRect* extents, int nRects,
const ShortRect* rects);
void copyFrom(const Region& r);
void assign_intersect(const Region& r);
void assign_union(const Region& r);
void assign_subtract(const Region& r);
// the following three operations return a new region:
Region intersect(const Region& r) const;
Region union_(const Region& r) const;
Region subtract(const Region& r) const;
bool equals(const Region& b) const;
int numRects() const;
bool is_empty() const { return numRects() == 0; }
bool get_rects(std::vector<Rect>* rects, bool left2right=true,
bool topdown=true, int maxArea=0) const;
Rect get_bounding_rect() const;
void debug_print(const char *prefix) const;
protected:
struct _XRegion* xrgn;
};
};
#endif // __RFB_REGION_INCLUDED__
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