Add Qt3 development HEAD version

1 files changed, 185 insertions, 0 deletions

diff --git a/src/styles/qstyleplugin.cpp b/src/styles/qstyleplugin.cpp
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+/****************************************************************************
+**
+** Implementation of QSqlDriverPlugin class
+**
+** Created : 010920
+**
+** Copyright (C) 2005-2008 Trolltech ASA.  All rights reserved.
+**
+** This file is part of the widgets module of the Qt GUI Toolkit.
+**
+** This file may be used under the terms of the GNU General
+** Public License versions 2.0 or 3.0 as published by the Free
+** Software Foundation and appearing in the files LICENSE.GPL2
+** and LICENSE.GPL3 included in the packaging of this file.
+** Alternatively you may (at your option) use any later version
+** of the GNU General Public License if such license has been
+** publicly approved by Trolltech ASA (or its successors, if any)
+** and the KDE Free Qt Foundation.
+**
+** Please review the following information to ensure GNU General
+** Public Licensing requirements will be met:
+** http://trolltech.com/products/qt/licenses/licensing/opensource/.
+** If you are unsure which license is appropriate for your use, please
+** review the following information:
+** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
+** or contact the sales department at sales@trolltech.com.
+**
+** This file may be used under the terms of the Q Public License as
+** defined by Trolltech ASA and appearing in the file LICENSE.QPL
+** included in the packaging of this file.  Licensees holding valid Qt
+** Commercial licenses may use this file in accordance with the Qt
+** Commercial License Agreement provided with the Software.
+**
+** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
+** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
+** herein.
+**
+**********************************************************************/
+
+#include "qstyleplugin.h"
+
+#ifndef QT_NO_STYLE
+#ifndef QT_NO_COMPONENT
+
+#include "qstyleinterface_p.h"
+#include "qobjectcleanuphandler.h"
+#include "qstyle.h"
+
+/*!
+    \class QStylePlugin qstyleplugin.h
+    \brief The QStylePlugin class provides an abstract base for custom QStyle plugins.
+
+    \ingroup plugins
+
+    The style plugin is a simple plugin interface that makes it easy
+    to create custom styles that can be loaded dynamically into
+    applications with a QStyleFactory.
+
+    Writing a style plugin is achieved by subclassing this base class,
+    reimplementing the pure virtual functions keys() and create(), and
+    exporting the class with the \c Q_EXPORT_PLUGIN macro. See the
+    \link plugins-howto.html plugins documentation\endlink for an
+    example.
+*/
+
+/*!
+    \fn QStringList QStylePlugin::keys() const
+
+    Returns the list of style keys this plugin supports.
+
+    These keys are usually the class names of the custom styles that
+    are implemented in the plugin.
+
+    \sa create()
+*/
+
+/*!
+    \fn QStyle* QStylePlugin::create( const QString& key )
+
+    Creates and returns a QStyle object for the style key \a key. The
+    style key is usually the class name of the required style.
+
+    \sa keys()
+*/
+
+class QStylePluginPrivate : public QStyleFactoryInterface, public QLibraryInterface
+{
+public:
+    QStylePluginPrivate( QStylePlugin *p )
+	: plugin( p )
+    {
+    }
+
+    virtual ~QStylePluginPrivate();
+
+    QRESULT queryInterface( const QUuid &iid, QUnknownInterface **iface );
+    Q_REFCOUNT;
+
+    QStringList featureList() const;
+    QStyle *create( const QString &key );
+
+    bool init();
+    void cleanup();
+    bool canUnload() const;
+
+private:
+    QStylePlugin *plugin;
+    QObjectCleanupHandler styles;
+};
+
+QRESULT QStylePluginPrivate::queryInterface( const QUuid &iid, QUnknownInterface **iface )
+{
+    *iface = 0;
+
+    if ( iid == IID_QUnknown )
+	*iface = (QStyleFactoryInterface*)this;
+    else if ( iid == IID_QFeatureList )
+	*iface = (QFeatureListInterface*)this;
+    else if ( iid == IID_QStyleFactory )
+	*iface = (QStyleFactoryInterface*)this;
+    else if ( iid == IID_QLibrary )
+	*iface = (QLibraryInterface*) this;
+    else
+	return QE_NOINTERFACE;
+
+    (*iface)->addRef();
+    return QS_OK;
+}
+
+QStylePluginPrivate::~QStylePluginPrivate()
+{
+    delete plugin;
+}
+
+QStringList QStylePluginPrivate::featureList() const
+{
+    return plugin->keys();
+}
+
+QStyle *QStylePluginPrivate::create( const QString &key )
+{
+    QStyle *st = plugin->create( key );
+    styles.add( st );
+    return st;
+}
+
+bool QStylePluginPrivate::init()
+{
+    return TRUE;
+}
+
+void QStylePluginPrivate::cleanup()
+{
+    styles.clear();
+}
+
+bool QStylePluginPrivate::canUnload() const
+{
+    return styles.isEmpty();
+}
+
+
+/*!
+    Constructs a style plugin. This is invoked automatically by the
+    \c Q_EXPORT_PLUGIN macro.
+*/
+QStylePlugin::QStylePlugin()
+    : QGPlugin( (QStyleFactoryInterface*)(d = new QStylePluginPrivate( this )) )
+{
+}
+
+/*!
+    Destroys the style plugin.
+
+    You never have to call this explicitly. Qt destroys a plugin
+    automatically when it is no longer used.
+*/
+QStylePlugin::~QStylePlugin()
+{
+    // don't delete d, as this is deleted by d
+}
+
+#endif // QT_NO_COMPONENT
+#endif // QT_NO_STYLE