source: trunk/src/gui/embedded/qscreendriverplugin_qws.cpp@ 846

Last change on this file since 846 was 846, checked in by Dmitry A. Kuminov, 14 years ago

trunk: Merged in qt 4.7.2 sources from branches/vendor/nokia/qt.

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1/****************************************************************************
2**
3** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
4** All rights reserved.
5** Contact: Nokia Corporation ([email protected])
6**
7** This file is part of the QtGui module of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:LGPL$
10** Commercial Usage
11** Licensees holding valid Qt Commercial licenses may use this file in
12** accordance with the Qt Commercial License Agreement provided with the
13** Software or, alternatively, in accordance with the terms contained in
14** a written agreement between you and Nokia.
15**
16** GNU Lesser General Public License Usage
17** Alternatively, this file may be used under the terms of the GNU Lesser
18** General Public License version 2.1 as published by the Free Software
19** Foundation and appearing in the file LICENSE.LGPL included in the
20** packaging of this file. Please review the following information to
21** ensure the GNU Lesser General Public License version 2.1 requirements
22** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
23**
24** In addition, as a special exception, Nokia gives you certain additional
25** rights. These rights are described in the Nokia Qt LGPL Exception
26** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
27**
28** GNU General Public License Usage
29** Alternatively, this file may be used under the terms of the GNU
30** General Public License version 3.0 as published by the Free Software
31** Foundation and appearing in the file LICENSE.GPL included in the
32** packaging of this file. Please review the following information to
33** ensure the GNU General Public License version 3.0 requirements will be
34** met: http://www.gnu.org/copyleft/gpl.html.
35**
36** If you have questions regarding the use of this file, please contact
37** Nokia at [email protected].
38** $QT_END_LICENSE$
39**
40****************************************************************************/
41
42#include "qscreendriverplugin_qws.h"
43
44QT_BEGIN_NAMESPACE
45
46#ifndef QT_NO_LIBRARY
47
48/*!
49 \class QScreenDriverPlugin
50 \ingroup plugins
51 \ingroup qws
52
53 \brief The QScreenDriverPlugin class is an abstract base class for
54 screen driver plugins in Qt for Embedded Linux.
55
56 Note that this class is only available in \l{Qt for Embedded Linux}.
57
58 \l{Qt for Embedded Linux} provides ready-made drivers for several screen
59 protocols, see the \l{Qt for Embedded Linux Display Management}{display
60 management} documentation for details. Custom screen drivers can be
61 implemented by subclassing the QScreen class and creating a screen
62 driver plugin.
63
64 A screen driver plugin can be created by subclassing
65 QScreenDriverPlugin and reimplementing the pure virtual keys() and
66 create() functions. By exporting the derived class using the
67 Q_EXPORT_PLUGIN2() macro, The default implementation of the
68 QScreenDriverFactory class will automatically detect the plugin
69 and load the driver into the server application at run-time. See
70 \l{How to Create Qt Plugins} for details.
71
72 \sa QScreen, QScreenDriverFactory
73*/
74
75/*!
76 \fn QStringList QScreenDriverPlugin::keys() const
77
78 Implement this function to return the list of valid keys, i.e. the
79 screen drivers supported by this plugin.
80
81 \l{Qt for Embedded Linux} provides ready-made drivers for several screen
82 protocols, see the \l{Qt for Embedded Linux Display Management}{display
83 management} documentation for details.
84
85 \sa create()
86*/
87
88/*!
89 Constructs a screen driver plugin with the given \a parent.
90
91 Note that this constructor is invoked automatically by the
92 Q_EXPORT_PLUGIN2() macro, so there is no need for calling it
93 explicitly.
94*/
95QScreenDriverPlugin::QScreenDriverPlugin(QObject *parent)
96 : QObject(parent)
97{
98}
99
100/*!
101 Destroys this screen driver plugin.
102
103 Note that Qt destroys a plugin automatically when it is no longer
104 used, so there is no need for calling the destructor explicitly.
105*/
106QScreenDriverPlugin::~QScreenDriverPlugin()
107{
108}
109
110
111/*!
112 \fn QScreen* QScreenDriverPlugin::create(const QString &key, int displayId)
113
114 Implement this function to create a driver matching the type
115 specified by the given \a key and \a displayId parameters. Note
116 that keys are case-insensitive.
117
118 \sa keys()
119*/
120
121#endif // QT_NO_LIBRARY
122
123QT_END_NAMESPACE
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