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+/****************************************************************************
+**
+** ...
+**
+** Copyright (C) 2001-2008 Trolltech ASA. All rights reserved.
+**
+** This file is part of the kernel module of the TQt 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 TQt 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.TQPL
+** included in the packaging of this file. Licensees holding valid TQt
+** Commercial licenses may use this file in accordance with the TQt
+** 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 "tqimageformatplugin.h"
+#ifndef TQT_NO_IMAGEFORMATPLUGIN
+#include "tqimageformatinterface_p.h"
+#include "tqimage.h"
+
+/*!
+ \class TQImageFormatPlugin tqimageformatplugin.h
+ \brief The TQImageFormatPlugin class provides an abstract base for custom image format plugins.
+
+ \ingroup plugins
+
+ The image format plugin is a simple plugin interface that makes
+ it easy to create custom image formats that can be used
+ transparently by applications.
+
+ Writing an image format plugin is achieved by subclassing this
+ base class, reimplementing the pure virtual functions keys() and
+ installIOHandler(), and exporting the class with the
+ TQ_EXPORT_PLUGIN macro. See the \link plugins-howto.html Plugins
+ documentation\endlink for details.
+*/
+
+/*!
+ \fn TQStringList TQImageFormatPlugin::keys() const
+
+ Returns the list of image formats this plugin supports.
+
+ \sa installIOHandler()
+*/
+
+
+/*!
+ \fn bool TQImageFormatPlugin::installIOHandler( const TQString &format )
+
+ Installs a TQImageIO image I/O handler for the image format \a
+ format.
+
+ \sa keys()
+*/
+
+class TQImageFormatPluginPrivate : public TQImageFormatInterface
+{
+public:
+ TQImageFormatPluginPrivate( TQImageFormatPlugin *p )
+ : plugin( p )
+ {
+ }
+ virtual ~TQImageFormatPluginPrivate();
+
+ TQRESULT queryInterface( const TQUuid &iid, TQUnknownInterface **iface );
+ TQ_REFCOUNT;
+
+ TQStringList featureList() const;
+
+ TQRESULT loadImage( const TQString &format, const TQString &filename, TQImage * );
+ TQRESULT saveImage( const TQString &format, const TQString &filename, const TQImage & );
+
+ TQRESULT installIOHandler( const TQString & );
+
+private:
+ TQImageFormatPlugin *plugin;
+};
+
+TQImageFormatPluginPrivate::~TQImageFormatPluginPrivate()
+{
+ delete plugin;
+}
+
+TQRESULT TQImageFormatPluginPrivate::queryInterface( const TQUuid &iid, TQUnknownInterface **iface )
+{
+ *iface = 0;
+
+ if ( iid == IID_QUnknown )
+ *iface = this;
+ else if ( iid == IID_QFeatureList )
+ *iface = this;
+ else if ( iid == IID_QImageFormat )
+ *iface = this;
+ else
+ return TQE_NOINTERFACE;
+
+ (*iface)->addRef();
+ return TQS_OK;
+}
+
+TQStringList TQImageFormatPluginPrivate::featureList() const
+{
+ return plugin->keys();
+}
+
+TQRESULT TQImageFormatPluginPrivate::loadImage( const TQString &format, const TQString &filename, TQImage *image )
+{
+ return plugin->loadImage( format, filename, image ) ? TQS_FALSE : TQS_OK;
+}
+
+TQRESULT TQImageFormatPluginPrivate::saveImage( const TQString &format, const TQString &filename, const TQImage &image )
+{
+ return plugin->saveImage( format, filename, image ) ? TQS_FALSE : TQS_OK;
+}
+
+TQRESULT TQImageFormatPluginPrivate::installIOHandler( const TQString &format )
+{
+ return plugin->installIOHandler( format ) ? TQS_FALSE : TQS_OK;
+}
+
+/*!
+ Constructs an image format plugin. This is invoked automatically
+ by the TQ_EXPORT_PLUGIN macro.
+*/
+TQImageFormatPlugin::TQImageFormatPlugin()
+ : TQGPlugin( d = new TQImageFormatPluginPrivate( this ) )
+{
+}
+
+/*!
+ Destroys the image format plugin.
+
+ You never have to call this explicitly. TQt destroys a plugin
+ automatically when it is no longer used.
+*/
+TQImageFormatPlugin::~TQImageFormatPlugin()
+{
+}
+
+
+/*!\internal
+ */
+bool TQImageFormatPlugin::loadImage( const TQString &format, const TQString &filename, TQImage *image )
+{
+ Q_UNUSED( format )
+ Q_UNUSED( filename )
+ Q_UNUSED( image )
+ return FALSE;
+}
+
+/*! \internal
+ */
+bool TQImageFormatPlugin::saveImage( const TQString &format, const TQString &filename, const TQImage &image )
+{
+ Q_UNUSED( format )
+ Q_UNUSED( filename )
+ Q_UNUSED( image )
+ return FALSE;
+}
+
+#endif // TQT_NO_IMAGEFORMATPLUGIN