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/****************************************************************************
**
** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL3$
** 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 The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/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 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPLv3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or later 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 2.0 requirements will be
** met: http://www.gnu.org/licenses/gpl-2.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qpostman_p.h"
#include <private/qobject_p.h>
#include <Qt3DCore/qscenepropertychange.h>
#include <Qt3DCore/qbackendscenepropertychange.h>
#include <Qt3DCore/private/qscene_p.h>
#include <Qt3DCore/private/qlockableobserverinterface_p.h>
#include <Qt3DCore/qnode.h>
#include <Qt3DCore/private/qnode_p.h>
QT_BEGIN_NAMESPACE
namespace Qt3DCore {
class QPostmanPrivate : public QObjectPrivate
{
public:
QPostmanPrivate()
: QObjectPrivate()
, m_scene(Q_NULLPTR)
{
}
Q_DECLARE_PUBLIC(QPostman)
QScene *m_scene;
std::vector<QSceneChangePtr> m_batch;
};
QPostman::QPostman(QObject *parent)
: QObject(*new QPostmanPrivate, parent)
{
qRegisterMetaType<QSceneChangePtr >("QSceneChangePtr");
}
void QPostman::setScene(QScene *scene)
{
Q_D(QPostman);
d->m_scene = scene;
}
static inline QMetaMethod notifyFrontendNodeMethod()
{
int idx = QPostman::staticMetaObject.indexOfMethod("notifyFrontendNode(QSceneChangePtr)");
Q_ASSERT(idx != -1);
return QPostman::staticMetaObject.method(idx);
}
void QPostman::sceneChangeEvent(const QSceneChangePtr &e)
{
static const QMetaMethod notifyFrontendNode = notifyFrontendNodeMethod();
notifyFrontendNode.invoke(this, Q_ARG(QSceneChangePtr, e));
}
/*!
* This will start or append \a change to a batch of changes from frontend
* nodes. Once the batch is complete, when the event loop returns, the batch is
* sent to the QChangeArbiter to notify the backend aspects.
*/
void QPostman::notifyBackend(const QSceneChangePtr &change)
{
// If batch in progress
// add change
// otherwise start batch
// by calling a queued slot
Q_D(QPostman);
if (d->m_batch.empty())
QMetaObject::invokeMethod(this, "submitChangeBatch", Qt::QueuedConnection);
d->m_batch.push_back(change);
}
void QPostman::notifyFrontendNode(const QSceneChangePtr &e)
{
Q_D(QPostman);
QBackendScenePropertyChangePtr change = qSharedPointerDynamicCast<QBackendScenePropertyChange>(e);
if (!change.isNull() && d->m_scene != Q_NULLPTR) {
QNode *n = d->m_scene->lookupNode(change->targetNode());
if (n != Q_NULLPTR)
n->sceneChangeEvent(change);
}
}
void QPostman::submitChangeBatch()
{
Q_D(QPostman);
QLockableObserverInterface *arbiter = Q_NULLPTR;
if (d->m_scene && (arbiter = d->m_scene->arbiter()) != Q_NULLPTR) {
arbiter->sceneChangeEventWithLock(d->m_batch);
d->m_batch.clear();
}
}
} //Qt3D
QT_END_NAMESPACE
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