2 // Copyright (C) 2013 Ingo Ruhnke <grumbel@gmail.com>
4 // This program is free software: you can redistribute it and/or modify
5 // it under the terms of the GNU General Public License as published by
6 // the Free Software Foundation, either version 3 of the License, or
7 // (at your option) any later version.
9 // This program is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
14 // You should have received a copy of the GNU General Public License
15 // along with this program. If not, see <http://www.gnu.org/licenses/>.
17 #ifndef HEADER_SUPERTUX_VIDEO_UTIL_HPP
18 #define HEADER_SUPERTUX_VIDEO_UTIL_HPP
25 void calculate_viewport(const Size& min_size, const Size& max_size,
26 const Size& real_window_size,
27 float pixel_aspect_ratio, float magnification,
29 Size& out_logical_size,
30 SDL_Rect& out_viewport);
32 float calculate_pixel_aspect_ratio(const Size& source, const Size& target);