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/* ============================================================
*
* This file is a part of digiKam project
* http://www.digikam.org
*
* Date : 2004-06-04
* Description : image plugins loader for image editor.
*
* Copyright (C) 2004-2005 by Renchi Raju <renchi@pooh.tam.uiuc.edu>
* Copyright (C) 2004-2007 by Gilles Caulier <caulier dot gilles at gmail dot com>
*
* This program is free software; you can redistribute it
* and/or modify it under the terms of the GNU General
* Public License as published by the Free Software Foundation;
* either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* ============================================================ */
// KDE includes.
#include <ktrader.h>
#include <kparts/componentfactory.h>
#include <kapplication.h>
#include <klocale.h>
#include <kxmlguiclient.h>
// Local includes.
#include "ddebug.h"
#include "splashscreen.h"
#include "imagepluginloader.h"
namespace Digikam
{
// List of obsolete image plugins name.
static const char* ObsoleteImagePluginsList[] =
{
"digikamimageplugin_blowup", // Merged with "Resize" tool since 0.9.2.
"digikamimageplugin_solarize", // Renamed "ColorFx" since 0.9.2.
"digikamimageplugin_unsharp", // Merged with "Sharpen" tool since 0.9.2.
"digikamimageplugin_refocus", // Merged with "Sharpen" tool since 0.9.2.
"digikamimageplugin_despeckle", // Renamed "Noise Reduction" since 0.9.2.
"-1"
};
class ImagePluginLoaderPrivate
{
public:
typedef QPair<QString, ImagePlugin*> PluginType;
typedef QValueList< PluginType > PluginList;
public:
ImagePluginLoaderPrivate()
{
splash = 0;
for (int i=0 ; QString(ObsoleteImagePluginsList[i]) != QString("-1") ; i++)
obsoleteImagePluginsList << ObsoleteImagePluginsList[i];
}
QStringList obsoleteImagePluginsList;
SplashScreen *splash;
PluginList pluginList;
};
ImagePluginLoader* ImagePluginLoader::m_instance=0;
ImagePluginLoader* ImagePluginLoader::instance()
{
return m_instance;
}
ImagePluginLoader::ImagePluginLoader(QObject *parent, SplashScreen *splash)
: QObject(parent)
{
m_instance = this;
d = new ImagePluginLoaderPrivate;
d->splash = splash;
QStringList imagePluginsList2Load;
KTrader::OfferList offers = KTrader::self()->query("Digikam/ImagePlugin");
KTrader::OfferList::ConstIterator iter;
for (iter = offers.begin() ; iter != offers.end() ; ++iter)
{
KService::Ptr service = *iter;
if (!d->obsoleteImagePluginsList.contains(service->library()))
imagePluginsList2Load.append(service->library());
}
loadPluginsFromList(imagePluginsList2Load);
}
ImagePluginLoader::~ImagePluginLoader()
{
delete d;
m_instance = 0;
}
void ImagePluginLoader::loadPluginsFromList(const QStringList& list)
{
if (d->splash)
d->splash->message(i18n("Loading Image Plugins"));
KTrader::OfferList offers = KTrader::self()->query("Digikam/ImagePlugin");
KTrader::OfferList::ConstIterator iter;
int cpt = 0;
// Load plugin core at the first time.
for(iter = offers.begin(); iter != offers.end(); ++iter)
{
KService::Ptr service = *iter;
ImagePlugin *plugin;
if (service->library() == "digikamimageplugin_core")
{
if (!pluginIsLoaded(service->name()) )
{
int error=-1;
plugin = KParts::ComponentFactory::createInstanceFromService<ImagePlugin>(
service, this, service->name().local8Bit(), 0, &error);
if (plugin && (dynamic_cast<KXMLGUIClient*>(plugin) != 0))
{
d->pluginList.append(ImagePluginLoaderPrivate::PluginType(service->name(), plugin));
DDebug() << "ImagePluginLoader: Loaded plugin " << service->name() << endl;
++cpt;
}
else
{
DWarning() << "ImagePluginLoader:: createInstanceFromLibrary returned 0 for "
<< service->name()
<< " (" << service->library() << ")"
<< " with error code "
<< error << endl;
if (error == KParts::ComponentFactory::ErrNoLibrary)
DWarning() << "KLibLoader says: "
<< KLibLoader::self()->lastErrorMessage() << endl;
}
}
break;
}
}
// Load all other image plugins after (make a coherant menu construction in Image Editor).
for (iter = offers.begin(); iter != offers.end(); ++iter)
{
KService::Ptr service = *iter;
ImagePlugin *plugin;
if (!list.contains(service->library()) && service->library() != "digikamimageplugin_core")
{
if ((plugin = pluginIsLoaded(service->name())) != NULL)
d->pluginList.remove(ImagePluginLoaderPrivate::PluginType(service->name(),plugin));
}
else
{
if( pluginIsLoaded(service->name()) )
continue;
else
{
int error=-1;
plugin = KParts::ComponentFactory::createInstanceFromService<ImagePlugin>(
service, this, service->name().local8Bit(), 0);
if (plugin && (dynamic_cast<KXMLGUIClient*>(plugin) != 0))
{
d->pluginList.append(ImagePluginLoaderPrivate::PluginType(service->name(), plugin));
DDebug() << "ImagePluginLoader: Loaded plugin " << service->name() << endl;
++cpt;
}
else
{
DWarning() << "ImagePluginLoader:: createInstanceFromLibrary returned 0 for "
<< service->name()
<< " (" << service->library() << ")"
<< " with error code "
<< error << endl;
if (error == KParts::ComponentFactory::ErrNoLibrary)
DWarning() << "KLibLoader says: "
<< KLibLoader::self()->lastErrorMessage() << endl;
}
}
}
}
d->splash = 0; // Splashcreen is only lanched at the first time.
// If user change plugins list to use in setup, don't try to
// use the old splashscreen instance.
}
ImagePlugin* ImagePluginLoader::pluginIsLoaded(const QString& name)
{
if ( d->pluginList.isEmpty() )
return 0;
for (ImagePluginLoaderPrivate::PluginList::iterator it = d->pluginList.begin();
it != d->pluginList.end(); ++it)
{
if ((*it).first == name )
return (*it).second;
}
return 0;
}
ImagePlugin* ImagePluginLoader::pluginInstance(const QString& libraryName)
{
KTrader::OfferList offers = KTrader::self()->query("Digikam/ImagePlugin");
KTrader::OfferList::ConstIterator iter;
for(iter = offers.begin(); iter != offers.end(); ++iter)
{
KService::Ptr service = *iter;
if(service->library() == libraryName)
{
return ( pluginIsLoaded(service->name()) );
}
}
return 0;
}
bool ImagePluginLoader::pluginLibraryIsLoaded(const QString& libraryName)
{
KTrader::OfferList offers = KTrader::self()->query("Digikam/ImagePlugin");
KTrader::OfferList::ConstIterator iter;
for(iter = offers.begin(); iter != offers.end(); ++iter)
{
KService::Ptr service = *iter;
if(service->library() == libraryName)
{
if( pluginIsLoaded(service->name()) )
return true;
}
}
return false;
}
QPtrList<ImagePlugin> ImagePluginLoader::pluginList()
{
QPtrList<ImagePlugin> list;
for (ImagePluginLoaderPrivate::PluginList::iterator it = d->pluginList.begin();
it != d->pluginList.end(); ++it)
{
list.append((*it).second);
}
return list;
}
} // namespace Digikam
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