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/****************************************************************************
**
** Copyright (C) 2013 Jolla Ltd, author: Aaron McCarthy <aaron.mccarthy@jollamobile.com>
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtPositioning module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, 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, Digia gives you certain additional
** rights. These rights are described in the Digia 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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qgeocluemaster.h"
#include <QtCore/QByteArray>
#include <QtCore/QMetaMethod>
QT_BEGIN_NAMESPACE
namespace
{
void position_provider_changed(GeoclueMasterClient *client, char *name, char *description,
char *service, char *path, gpointer userdata)
{
Q_UNUSED(client)
Q_UNUSED(name)
Q_UNUSED(description)
const QByteArray pService = QByteArray(service);
const QByteArray pPath = QByteArray(path);
QObject *o = static_cast<QObject *>(userdata);
QMetaObject::invokeMethod(o, "positionProviderChanged", Qt::QueuedConnection,
Q_ARG(QByteArray, pService), Q_ARG(QByteArray, pPath));
}
}
QGeoclueMaster::QGeoclueMaster(QObject *handler)
: m_client(0), m_masterPosition(0), m_handler(handler)
{
}
QGeoclueMaster::~QGeoclueMaster()
{
releaseMasterClient();
}
bool QGeoclueMaster::hasMasterClient() const
{
return m_client && m_masterPosition;
}
bool QGeoclueMaster::createMasterClient(GeoclueAccuracyLevel accuracy, GeoclueResourceFlags resourceFlags)
{
Q_ASSERT(!m_client && !m_masterPosition);
GeoclueMaster *master = geoclue_master_get_default();
if (!master) {
qCritical("QGeoclueMaster error creating GeoclueMaster");
return false;
}
GError *error = 0;
m_client = geoclue_master_create_client(master, 0, &error);
g_object_unref (master);
if (!m_client) {
qCritical("QGeoclueMaster error creating GeoclueMasterClient.");
if (error) {
qCritical("Geoclue error: %s", error->message);
g_error_free(error);
}
return false;
}
g_signal_connect(G_OBJECT(m_client), "position-provider-changed",
G_CALLBACK(position_provider_changed), m_handler);
if (!geoclue_master_client_set_requirements(m_client, accuracy, 0, true,
resourceFlags, &error)) {
qCritical("QGeoclueMaster geoclue set_requirements failed.");
if (error) {
qCritical ("Geoclue error: %s", error->message);
g_error_free (error);
}
g_object_unref(m_client);
m_client = 0;
return false;
}
// Need to create the master position interface even though it will not be used, otherwise
// GetPositionProvider always returns empty strings.
m_masterPosition = geoclue_master_client_create_position(m_client, 0);
if (!m_masterPosition) {
qCritical("QGeoclueMaster failed to get master position object");
g_object_unref(m_client);
m_client = 0;
return false;
}
return true;
}
void QGeoclueMaster::releaseMasterClient()
{
if (m_masterPosition) {
g_object_unref(m_masterPosition);
m_masterPosition = 0;
}
if (m_client) {
g_signal_handlers_disconnect_by_func(G_OBJECT(m_client), (void *)position_provider_changed,
m_handler);
g_object_unref(m_client);
m_client = 0;
}
}
QT_END_NAMESPACE
|
