140 lines
3.1 KiB
C++
140 lines
3.1 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program 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 3 of the License, or
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* (at your option) any later version.
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*
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* This program 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 program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef QDENGINE_SYSTEM_GRAPHICS_GR_SCREEN_REGION_H
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#define QDENGINE_SYSTEM_GRAPHICS_GR_SCREEN_REGION_H
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namespace QDEngine {
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#define grScreenRegion_EMPTY grScreenRegion(0, 0, 0, 0)
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//! Прямоугольная область на экране.
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class grScreenRegion {
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public:
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grScreenRegion() : _x(0), _y(0), _size_x(0), _size_y(0) {}
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grScreenRegion(int x, int y, int sx, int sy) : _x(x), _y(y), _size_x(sx), _size_y(sy) {}
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bool operator == (const grScreenRegion ®) const {
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if (_x == reg._x && _y == reg._y && _size_x == reg._size_x && _size_y == reg._size_y)
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return true;
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if (is_empty() && reg.is_empty())
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return true;
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return false;
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}
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bool operator != (const grScreenRegion ®) const {
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if (is_empty() && reg.is_empty())
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return false;
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if (_x != reg._x || _y != reg._y || _size_x != reg._size_x || _size_y != reg._size_y)
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return true;
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return false;
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}
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grScreenRegion &operator += (const grScreenRegion ®) {
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if (reg.is_empty()) return *this;
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if (is_empty()) {
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*this = reg;
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return *this;
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}
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int x0 = (min_x() < reg.min_x()) ? min_x() : reg.min_x();
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int x1 = (max_x() > reg.max_x()) ? max_x() : reg.max_x();
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int y0 = (min_y() < reg.min_y()) ? min_y() : reg.min_y();
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int y1 = (max_y() > reg.max_y()) ? max_y() : reg.max_y();
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_x = (x0 + x1) / 2;
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_y = (y0 + y1) / 2;
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_size_x = x1 - x0;
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_size_y = y1 - y0;
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return *this;
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}
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int x() const {
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return _x;
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}
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int y() const {
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return _y;
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}
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int size_x() const {
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return _size_x;
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}
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int size_y() const {
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return _size_y;
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}
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int min_x() const {
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return _x - _size_x / 2;
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}
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int max_x() const {
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return _x + _size_x / 2;
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}
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int min_y() const {
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return _y - _size_y / 2;
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}
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int max_y() const {
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return _y + _size_y / 2;
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}
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void move(int dx, int dy) {
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_x += dx;
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_y += dy;
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}
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bool is_empty() const {
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return (!_size_x || !_size_y);
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}
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bool is_inside(int x, int y) const {
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if (x >= min_x() && x < max_x() && y >= min_y() && y < max_y()) return true;
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return false;
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}
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void clear() {
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_size_x = 0;
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}
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static const grScreenRegion EMPTY;
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private:
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//! координаты центра области
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int _x;
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int _y;
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int _size_x;
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int _size_y;
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};
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} // namespace QDEngine
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#endif // QDENGINE_SYSTEM_GRAPHICS_GR_SCREEN_REGION_H
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