88 lines
2.1 KiB
C++
88 lines
2.1 KiB
C++
/*
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Copyright (C) 2001-2006, William Joseph.
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All Rights Reserved.
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This file is part of GtkRadiant.
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GtkRadiant 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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GtkRadiant 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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You should have received a copy of the GNU General Public License
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along with GtkRadiant; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#if !defined ( INCLUDED_XORRECTANGLE_H )
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#define INCLUDED_XORRECTANGLE_H
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#include <cairo.h>
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#include <uilib/uilib.h>
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#include "math/vector.h"
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class rectangle_t {
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public:
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rectangle_t()
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: x(0), y(0), w(0), h(0)
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{}
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rectangle_t(float _x, float _y, float _w, float _h)
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: x(_x), y(_y), w(_w), h(_h)
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{}
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float x;
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float y;
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float w;
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float h;
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};
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struct Coord2D {
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float x, y;
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Coord2D(float _x, float _y)
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: x(_x), y(_y)
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{
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}
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};
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inline Coord2D coord2d_device2screen(const Coord2D &coord, unsigned int width, unsigned int height)
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{
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return Coord2D(((coord.x + 1.0f) * 0.5f) * width, ((coord.y + 1.0f) * 0.5f) * height);
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}
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inline rectangle_t rectangle_from_area(const float min[2], const float max[2], unsigned int width, unsigned int height)
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{
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Coord2D botleft(coord2d_device2screen(Coord2D(min[0], min[1]), width, height));
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Coord2D topright(coord2d_device2screen(Coord2D(max[0], max[1]), width, height));
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return rectangle_t(botleft.x, botleft.y, topright.x - botleft.x, topright.y - botleft.y);
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}
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class XORRectangle {
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rectangle_t m_rectangle;
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ui::GLArea m_widget;
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cairo_t *cr;
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bool initialised() const;
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void lazy_init();
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void draw() const;
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public:
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XORRectangle(ui::GLArea widget);
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~XORRectangle();
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void set(rectangle_t rectangle);
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};
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#endif
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