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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 "qabstractaspect.h"
#include "qentity.h"
#include <Qt3DCore/private/qaspectmanager_p.h>
#include <private/qabstractaspect_p.h>
#include <Qt3DCore/private/qaspectjobmanager_p.h>
#include <private/qchangearbiter_p.h>
#include <Qt3DCore/private/qscene_p.h>
#include <Qt3DCore/private/qnodevisitor_p.h>
#include <Qt3DCore/qscenepropertychange.h>
QT_BEGIN_NAMESPACE
static QByteArray className(const QMetaObject &obj)
{
// note: class names are stored in static meta objects, thus the usage of fromRawData here is fine
return QByteArray::fromRawData(obj.className(), int(strlen(obj.className())));
}
namespace Qt3DCore {
/*!
\class Qt3DCore::QAbstractAspectPrivate
\internal
*/
QAbstractAspectPrivate::QAbstractAspectPrivate()
: QObjectPrivate()
, m_root(Q_NULLPTR)
, m_aspectManager(Q_NULLPTR)
, m_jobManager(Q_NULLPTR)
, m_arbiter(Q_NULLPTR)
{
}
QAbstractAspectPrivate *QAbstractAspectPrivate::get(QAbstractAspect *aspect)
{
return aspect->d_func();
}
/*!
\class Qt3DCore::QAbstractAspect
\inmodule Qt3DCore
\brief QAbstractAspect is the base class for aspects that provide a vertical slice of behavior.
*/
QAbstractAspect::QAbstractAspect(QObject *parent)
: QObject(*new QAbstractAspectPrivate, parent)
{
}
/*!
\typedef Qt3DCore::QAspectJobPtr
\relates Qt3DCore::QAbstractAspect
A shared pointer for QAspectJob.
*/
/*!
\typedef Qt3DCore::QBackendNodeFunctorPtr
\relates Qt3DCore::QAbstractAspect
A shared pointer for QBackendNodeFunctor.
*/
/*!
\internal
*/
QAbstractAspect::QAbstractAspect(QAbstractAspectPrivate &dd, QObject *parent)
: QObject(dd, parent)
{
}
/*!
Registers backend.
*/
void QAbstractAspect::registerBackendType(const QMetaObject &obj, const QBackendNodeFunctorPtr &functor)
{
Q_D(QAbstractAspect);
d->m_backendCreatorFunctors.insert(className(obj), functor);
}
void QAbstractAspectPrivate::sceneNodeAdded(QSceneChangePtr &e)
{
QScenePropertyChangePtr propertyChange = e.staticCast<QScenePropertyChange>();
QNodePtr nodePtr = propertyChange->value().value<QNodePtr>();
QNode *n = nodePtr.data();
QNodeVisitor visitor;
visitor.traverse(n, this, &QAbstractAspectPrivate::createBackendNode);
}
void QAbstractAspectPrivate::sceneNodeRemoved(QSceneChangePtr &e)
{
QScenePropertyChangePtr propertyChange = e.staticCast<QScenePropertyChange>();
QNodePtr nodePtr = propertyChange->value().value<QNodePtr>();
QNode *n = nodePtr.data();
clearBackendNode(n);
}
QVariant QAbstractAspect::executeCommand(const QStringList &args)
{
Q_UNUSED(args);
return QVariant();
}
QBackendNode *QAbstractAspectPrivate::createBackendNode(QNode *frontend) const
{
const QMetaObject *metaObj = frontend->metaObject();
QBackendNodeFunctorPtr functor;
while (metaObj != Q_NULLPTR && functor.isNull()) {
functor = m_backendCreatorFunctors.value(className(*metaObj));
metaObj = metaObj->superClass();
}
if (!functor.isNull()) {
QBackendNode *backend = functor->get(frontend->id());
if (backend != Q_NULLPTR)
return backend;
backend = functor->create(frontend, this);
// backend could be null if the user decides that his functor should only
// perform some action when encountering a given type of item but doesn't need to
// return a QBackendNode pointer.
if (backend == Q_NULLPTR)
return Q_NULLPTR;
QBackendNodePrivate *backendPriv = QBackendNodePrivate::get(backend);
// TO DO: Find a way to specify the changes to observe
// Register backendNode with QChangeArbiter
if (m_arbiter != Q_NULLPTR) { // Unit tests may not have the arbiter registered
m_arbiter->registerObserver(backendPriv, backend->peerUuid(), AllChanges);
if (backend->mode() == QBackendNode::ReadWrite)
m_arbiter->scene()->addObservable(backendPriv, backend->peerUuid());
}
return backend;
}
return Q_NULLPTR;
}
void QAbstractAspectPrivate::clearBackendNode(QNode *frontend) const
{
const QMetaObject *metaObj = frontend->metaObject();
QBackendNodeFunctorPtr functor;
while (metaObj != Q_NULLPTR && functor.isNull()) {
functor = m_backendCreatorFunctors.value(className(*metaObj));
metaObj = metaObj->superClass();
}
if (!functor.isNull()) {
QBackendNode *backend = functor->get(frontend->id());
if (backend != Q_NULLPTR) {
QBackendNodePrivate *backendPriv = QBackendNodePrivate::get(backend);
m_arbiter->unregisterObserver(backendPriv, backend->peerUuid());
if (backend->mode() == QBackendNode::ReadWrite)
m_arbiter->scene()->removeObservable(backendPriv, backend->peerUuid());
functor->destroy(frontend->id());
}
}
}
void QAbstractAspectPrivate::registerAspect(QEntity *rootObject)
{
Q_Q(QAbstractAspect);
if (rootObject == m_root)
return;
m_root = rootObject;
QNodeVisitor visitor;
visitor.traverse(rootObject, this, &QAbstractAspectPrivate::createBackendNode);
q->onRootEntityChanged(rootObject);
}
QServiceLocator *QAbstractAspectPrivate::services() const
{
return m_aspectManager->serviceLocator();
}
QAbstractAspectJobManager *QAbstractAspectPrivate::jobManager() const
{
return m_jobManager;
}
QVector<QAspectJobPtr> QAbstractAspectPrivate::jobsToExecute(qint64 time)
{
Q_Q(QAbstractAspect);
return q->jobsToExecute(time);
}
void QAbstractAspect::onStartup()
{
}
void QAbstractAspect::onShutdown()
{
}
void QAbstractAspect::onRootEntityChanged(QEntity *rootEntity)
{
Q_UNUSED(rootEntity);
}
} // of namespace Qt3DCore
QT_END_NAMESPACE
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