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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: http://www.qt-project.org/
**
** This file is part of the QtSensors module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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 1.1, 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.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QDir>
#include <QLibraryInfo>
#include <QtCore/private/qfactoryloader_p.h>
#include "qsensorgesturerecognizer.h"
#include "qsensorgesturemanagerprivate_p.h"
#include "qsensorgestureplugininterface.h"
QT_BEGIN_NAMESPACE
QSensorGestureManagerPrivate::QSensorGestureManagerPrivate(QObject *parent) :
QObject(parent)
{
loader = new QFactoryLoader(QSensorGestureFactoryInterface_iid, QLatin1String("/sensorgestures"));
loadPlugins();
}
QSensorGestureManagerPrivate::~QSensorGestureManagerPrivate()
{
qDeleteAll(registeredSensorGestures);
delete loader;
}
void QSensorGestureManagerPrivate::initPlugin(QObject *plugin)
{
if (QSensorGesturePluginInterface *pInterface
= qobject_cast<QSensorGesturePluginInterface *>(plugin)) {
Q_FOREACH (const QString &id, pInterface->supportedIds()) {
if (!knownIds.contains(id))
knownIds.append(id);
else
qWarning() << id <<"from the plugin"
<< pInterface->name()
<< "is already known.";
}
plugins << plugin;
} else {
qWarning() << "Could not load "<< plugin;
}
}
/*!
Internal
Loads the sensorgesture plugins.
*/
void QSensorGestureManagerPrivate::loadPlugins()
{
foreach (const QString &key, loader->keys()) {
QObject *plugin = loader->instance(key);
if (plugin) {
initPlugin(plugin);
}
}
}
/*!
Internal
creates the requested recognizer.
*/
bool QSensorGestureManagerPrivate::loadRecognizer(const QString &recognizerId)
{
//if no plugin is used return true if this is a registered recognizer
if (registeredSensorGestures.contains(recognizerId))
return true;
for (int i= 0; i < plugins.count(); i++) {
if (QSensorGesturePluginInterface *pInterface
= qobject_cast<QSensorGesturePluginInterface *>(plugins.at(i))) {
if (pInterface->supportedIds().contains(recognizerId)) {
if (!registeredSensorGestures.contains(recognizerId)) {
//create these recognizers
QList <QSensorGestureRecognizer *> recognizers = pInterface->createRecognizers();
Q_FOREACH (QSensorGestureRecognizer *recognizer, recognizers) {
if (registeredSensorGestures.contains(recognizer->id())) {
qWarning() << "Ignoring recognizer " << recognizer->id() << "from plugin" << pInterface->name() << "because it is already registered";
delete recognizer;
} else {
registeredSensorGestures.insert(recognizer->id(),recognizer);
}
}
}
return true;
}
}
}
return false;
}
bool QSensorGestureManagerPrivate::registerSensorGestureRecognizer(QSensorGestureRecognizer *recognizer)
{
if (!knownIds.contains(recognizer->id())) {
knownIds.append(recognizer->id());
Q_ASSERT (!registeredSensorGestures.contains(recognizer->id()));
recognizer->setParent(0);
registeredSensorGestures.insert(recognizer->id(),recognizer);
Q_EMIT newSensorGestureAvailable();
return true;
}
return false;
}
QSensorGestureRecognizer *QSensorGestureManagerPrivate::sensorGestureRecognizer(const QString &id)
{
QSensorGestureRecognizer *recognizer = 0;
if (loadRecognizer(id)) {
recognizer= registeredSensorGestures.value(id);
}
return recognizer;
}
QStringList QSensorGestureManagerPrivate::gestureIds()
{
return knownIds;
}
QT_END_NAMESPACE
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