1 /** @file untrapper.cpp  Mouse untrapping utility.
2  *
3  * @authors Copyright (c) 2014-2017 Jaakko Keränen <jaakko.keranen@iki.fi>
4  *
5  * @par License
6  * LGPL: http://www.gnu.org/licenses/lgpl.html
7  *
8  * <small>This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU Lesser General Public License as published by
10  * the Free Software Foundation; either version 3 of the License, or (at your
11  * option) any later version. This program is distributed in the hope that it
12  * will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
13  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
14  * General Public License for more details. You should have received a copy of
15  * the GNU Lesser General Public License along with this program; if not, see:
16  * http://www.gnu.org/licenses</small>
17  */
18 
19 #include "de/Untrapper"
20 
21 namespace de {
22 
DENG2_PIMPL(Untrapper)23 DENG2_PIMPL(Untrapper)
24 {
25     GLWindow &window;
26     bool wasTrapped;
27 
28     Impl(Public *i, GLWindow &w) : Base(i), window(w)
29     {
30         wasTrapped = window.eventHandler().isMouseTrapped();
31         if (wasTrapped)
32         {
33             window.eventHandler().trapMouse(false);
34         }
35     }
36 
37     ~Impl()
38     {
39         if (wasTrapped)
40         {
41             window.eventHandler().trapMouse();
42         }
43     }
44 };
45 
Untrapper(GLWindow & window)46 Untrapper::Untrapper(GLWindow &window) : d(new Impl(this, window))
47 {}
48 
49 } // namespace de
50