1/***************************************************************************
2 * Copyright 2011 Stefan Majewsky <majewsky@gmx.net> *
3 * *
4 * This program is free software; you can redistribute it and/or modify *
5 * it under the terms of the GNU Library General Public License *
6 * version 2 as published by the Free Software Foundation *
7 * *
8 * This program is distributed in the hope that it will be useful, *
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
11 * GNU Library General Public License for more details. *
12 * *
13 * You should have received a copy of the GNU Library General Public *
14 * License along with this program; if not, write to the *
15 * Free Software Foundation, Inc., *
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
17 ***************************************************************************/
18
19#include <QtGui/QApplication>
20
21/*
22 * This file is only compiled on Q_WS_X11 (see CMakeLists.txt). It chooses the
23 * raster graphicssystem in anything linking against libkdegames.
24 *
25 * The raster graphicssystem has a much better performance in graphics-intense
26 * apps like games, compared to the X11 graphicssystem which is still the
27 * default in Qt 4.7. (Rumor has it that raster will become the default as of Qt
28 * 4.8.)
29 *
30 * This header ensures that raster is always used instead of X11 to enable a
31 * more fluent graphics experience. The relevant API call
32 * (QApplication::setGraphicsSystem) needs to be issued *before* the
33 * application object (QApplication or KApplication) is constructed, so we do it
34 * in a constructor of an anonymous global object.
35 *
36 * Constructors of global objects are called before main() by the C++ runtime.
37 */
38
39namespace { //don't export this struct and instance, it's internal affairs
40 struct ConfigureDefaultGraphicsSystem
41 {
42 ConfigureDefaultGraphicsSystem() {
43 QApplication::setGraphicsSystem(QLatin1String("raster"));
44 }
45 };
46 ConfigureDefaultGraphicsSystem staticObject;
47}
48