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84 lines
2.3 KiB
C
84 lines
2.3 KiB
C
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/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*/
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// Cross-platform Region class based on the X11 region implementation
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#ifndef __RFB_REGION_INCLUDED__
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#define __RFB_REGION_INCLUDED__
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#include <rfb/Rect.h>
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#include <vector>
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struct _XRegion;
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namespace rfb {
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struct ShortRect {
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short x1, y1, x2, y2;
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};
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class Region {
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public:
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// Create an empty region
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Region();
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// Create a rectangular region
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Region(const Rect& r);
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Region(const Region& r);
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Region &operator=(const Region& src);
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~Region();
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// the following methods alter the region in place:
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void clear();
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void reset(const Rect& r);
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void translate(const rfb::Point& delta);
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void setOrderedRects(const std::vector<Rect>& rects);
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void setExtentsAndOrderedRects(const ShortRect* extents, int nRects,
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const ShortRect* rects);
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void assign_intersect(const Region& r);
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void assign_union(const Region& r);
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void assign_subtract(const Region& r);
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// the following three operations return a new region:
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Region intersect(const Region& r) const;
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Region union_(const Region& r) const;
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Region subtract(const Region& r) const;
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bool equals(const Region& b) const;
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int numRects() const;
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bool is_empty() const { return numRects() == 0; }
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bool get_rects(std::vector<Rect>* rects, bool left2right=true,
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bool topdown=true) const;
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Rect get_bounding_rect() const;
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void debug_print(const char *prefix) const;
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protected:
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struct _XRegion* xrgn;
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};
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};
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#endif // __RFB_REGION_INCLUDED__
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