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     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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    16 ** GNU Lesser General Public License Usage

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    38 ** $QT_END_LICENSE$

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    40 ****************************************************************************/

    41 

    42 #ifndef QPLUGIN_H

    43 #define QPLUGIN_H

    44 

    45 #include <QtCore/qobject.h>

    46 #include <QtCore/qpointer.h>

    47 

    48 QT_BEGIN_HEADER

    49 

    50 QT_BEGIN_NAMESPACE

    51 

    52 QT_MODULE(Core)

    53 

    54 #ifndef Q_EXTERN_C

    55 #  ifdef __cplusplus

    56 #    define Q_EXTERN_C extern "C"

    57 #  else

    58 #    define Q_EXTERN_C extern

    59 #  endif

    60 #endif

    61 

    62 typedef QObject *(*QtPluginInstanceFunction)();

    63 

    64 void Q_CORE_EXPORT qRegisterStaticPluginInstanceFunction(QtPluginInstanceFunction function);

    65 

    66 #define Q_IMPORT_PLUGIN(PLUGIN) \

    67         extern QT_PREPEND_NAMESPACE(QObject) *qt_plugin_instance_##PLUGIN(); \

    68         class Static##PLUGIN##PluginInstance{ \

    69         public: \

    70                 Static##PLUGIN##PluginInstance() { \

    71                 qRegisterStaticPluginInstanceFunction(qt_plugin_instance_##PLUGIN); \

    72                 } \

    73         }; \

    74        static Static##PLUGIN##PluginInstance static##PLUGIN##Instance;

    75 

    76 #define Q_PLUGIN_INSTANCE(IMPLEMENTATION) \

    77         { \

    78             static QT_PREPEND_NAMESPACE(QPointer)<QT_PREPEND_NAMESPACE(QObject)> _instance; \

    79             if (!_instance)      \

    80                 _instance = new IMPLEMENTATION; \

    81             return _instance; \

    82         }

    83 

    84 #  define Q_EXPORT_PLUGIN(PLUGIN) \

    85             Q_EXPORT_PLUGIN2(PLUGIN, PLUGIN)

    86 

    87 #  define Q_EXPORT_STATIC_PLUGIN(PLUGIN) \

    88             Q_EXPORT_STATIC_PLUGIN2(PLUGIN, PLUGIN)

    89 

    90 #if defined(QT_STATICPLUGIN)

    91 

    92 #  define Q_EXPORT_PLUGIN2(PLUGIN, PLUGINCLASS) \

    93             QT_PREPEND_NAMESPACE(QObject) \

    94                 *qt_plugin_instance_##PLUGIN() \

    95             Q_PLUGIN_INSTANCE(PLUGINCLASS)

    96 

    97 #  define Q_EXPORT_STATIC_PLUGIN2(PLUGIN, PLUGINCLASS) \

    98             Q_EXPORT_PLUGIN2(PLUGIN, PLUGINCLASS)

    99 

   100 #else

   101 // NOTE: if you change pattern, you MUST change the pattern in

   102 // qlibrary.cpp as well.  changing the pattern will break all

   103 // backwards compatibility as well (no old plugins will be loaded).

   104 #  ifdef QPLUGIN_DEBUG_STR

   105 #    undef QPLUGIN_DEBUG_STR

   106 #  endif

   107 #  ifdef QT_NO_DEBUG

   108 #    define QPLUGIN_DEBUG_STR "false"

   109 #  else

   110 #    define QPLUGIN_DEBUG_STR "true"

   111 #  endif

   112 #  define Q_PLUGIN_VERIFICATION_DATA \

   113     static const char *qt_plugin_verification_data = \

   114       "pattern=""QT_PLUGIN_VERIFICATION_DATA""\n" \

   115       "version="QT_VERSION_STR"\n" \

   116       "debug="QPLUGIN_DEBUG_STR"\n" \

   117       "buildkey="QT_BUILD_KEY;

   118 

   119 #  if defined (Q_OS_WIN32) && defined(Q_CC_BOR)

   120 #     define Q_STANDARD_CALL __stdcall

   121 #  else

   122 #     define Q_STANDARD_CALL

   123 #  endif

   124 

   125 #  define Q_EXPORT_PLUGIN2(PLUGIN, PLUGINCLASS)      \

   126             Q_PLUGIN_VERIFICATION_DATA \

   127             Q_EXTERN_C Q_DECL_EXPORT \

   128             const char * Q_STANDARD_CALL qt_plugin_query_verification_data() \

   129             { return qt_plugin_verification_data; } \

   130             Q_EXTERN_C Q_DECL_EXPORT QT_PREPEND_NAMESPACE(QObject) * Q_STANDARD_CALL qt_plugin_instance() \

   131             Q_PLUGIN_INSTANCE(PLUGINCLASS)

   132 

   133 #  define Q_EXPORT_STATIC_PLUGIN2(PLUGIN, PLUGINCLASS)

   134 

   135 #endif

   136 

   137 QT_END_NAMESPACE

   138 

   139 QT_END_HEADER

   140 

   141 #endif // Q_PLUGIN_H