2 winnie - an experimental window system
4 Copyright (C) 2013 Eleni Maria Stea
6 This program is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
19 Author: Eleni Maria Stea <elene.mst@gmail.com>
26 x = y = width = height = 0;
29 Rect::Rect(int x, int y, int w, int h)
37 static inline int min(int x, int y)
42 static inline int max(int x, int y)
47 Rect rect_union(const Rect &a, const Rect &b)
50 uni.x = min(a.x, b.x);
51 uni.y = min(a.y, b.y);
52 uni.width = max(a.x + a.width, b.x + b.width) - uni.x;
53 uni.height = max(a.y + a.height, b.y + b.height) - uni.y;
58 Rect rect_intersection(const Rect &a, const Rect &b)
61 intersect.x = max(a.x, b.x);
62 intersect.y = max(a.y, b.y);
63 intersect.width = max(min(a.x + a.width, b.x + b.width) - intersect.x, 0);
64 intersect.height = max(min(a.y + a.height, b.y + b.height) - intersect.y, 0);