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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://www.qtsoftware.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QPLUGIN_H
#define QPLUGIN_H
#include <QtCore/qobject.h>
#include <QtCore/qpointer.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Core)
#ifndef Q_EXTERN_C
# ifdef __cplusplus
# define Q_EXTERN_C extern "C"
# else
# define Q_EXTERN_C extern
# endif
#endif
typedef QObject *(*QtPluginInstanceFunction)();
void Q_CORE_EXPORT qRegisterStaticPluginInstanceFunction(QtPluginInstanceFunction function);
struct qt_plugin_instance_deleter
{
qt_plugin_instance_deleter(QPointer<QObject> &instance)
: instance_(instance)
{
}
~qt_plugin_instance_deleter()
{
delete instance_;
}
QPointer<QObject> &instance_;
};
#define Q_IMPORT_PLUGIN(PLUGIN) \
extern QT_PREPEND_NAMESPACE(QObject) *qt_plugin_instance_##PLUGIN(); \
class Static##PLUGIN##PluginInstance{ \
public: \
Static##PLUGIN##PluginInstance() { \
qRegisterStaticPluginInstanceFunction(qt_plugin_instance_##PLUGIN); \
} \
}; \
static Static##PLUGIN##PluginInstance static##PLUGIN##Instance;
#define Q_PLUGIN_INSTANCE(IMPLEMENTATION) \
{ \
static QT_PREPEND_NAMESPACE(QPointer)<QT_PREPEND_NAMESPACE(QObject)> _instance; \
if (!_instance) { \
static QT_PREPEND_NAMESPACE(qt_plugin_instance_deleter) deleter(_instance); \
_instance = new IMPLEMENTATION; \
} \
return _instance; \
}
# define Q_EXPORT_PLUGIN(PLUGIN) \
Q_EXPORT_PLUGIN2(PLUGIN, PLUGIN)
# define Q_EXPORT_STATIC_PLUGIN(PLUGIN) \
Q_EXPORT_STATIC_PLUGIN2(PLUGIN, PLUGIN)
#if defined(QT_STATICPLUGIN)
# define Q_EXPORT_PLUGIN2(PLUGIN, PLUGINCLASS) \
QT_PREPEND_NAMESPACE(QObject) \
*qt_plugin_instance_##PLUGIN() \
Q_PLUGIN_INSTANCE(PLUGINCLASS)
# define Q_EXPORT_STATIC_PLUGIN2(PLUGIN, PLUGINCLASS) \
Q_EXPORT_PLUGIN2(PLUGIN, PLUGINCLASS)
#else
// NOTE: if you change pattern, you MUST change the pattern in
// qlibrary.cpp as well. changing the pattern will break all
// backwards compatibility as well (no old plugins will be loaded).
# ifdef QPLUGIN_DEBUG_STR
# undef QPLUGIN_DEBUG_STR
# endif
# ifdef QT_NO_DEBUG
# define QPLUGIN_DEBUG_STR "false"
# else
# define QPLUGIN_DEBUG_STR "true"
# endif
# define Q_PLUGIN_VERIFICATION_DATA \
static const char *qt_plugin_verification_data = \
"pattern=""QT_PLUGIN_VERIFICATION_DATA""\n" \
"version="QT_VERSION_STR"\n" \
"debug="QPLUGIN_DEBUG_STR"\n" \
"buildkey="QT_BUILD_KEY;
# if defined (Q_OS_WIN32) && defined(Q_CC_BOR)
# define Q_STANDARD_CALL __stdcall
# else
# define Q_STANDARD_CALL
# endif
# define Q_EXPORT_PLUGIN2(PLUGIN, PLUGINCLASS) \
Q_PLUGIN_VERIFICATION_DATA \
Q_EXTERN_C Q_DECL_EXPORT \
const char * Q_STANDARD_CALL qt_plugin_query_verification_data() \
{ return qt_plugin_verification_data; } \
Q_EXTERN_C Q_DECL_EXPORT QT_PREPEND_NAMESPACE(QObject) * Q_STANDARD_CALL qt_plugin_instance() \
Q_PLUGIN_INSTANCE(PLUGINCLASS)
# define Q_EXPORT_STATIC_PLUGIN2(PLUGIN, PLUGINCLASS)
#endif
QT_END_NAMESPACE
QT_END_HEADER
#endif // Q_PLUGIN_H
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