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/****************************************************************************
**
** Copyright (C) 2015 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 "qstateset.h"
#include "qstateset_p.h"
#include <Qt3DCore/qscenepropertychange.h>
#include <Qt3DRenderer/qrenderstate.h>
QT_BEGIN_NAMESPACE
namespace Qt3D {
QStateSetPrivate::QStateSetPrivate()
: QFrameGraphNodePrivate()
{
}
/*!
* \class Qt3D::QStateSet
*
* \brief The Qt3D::QStateSet FrameGraph node offers a way of specifying a set
* of Qt3D::QRenderState to be applied during the execution of a FrameGraph
* branch.
*
* States set on a Qt3D::QStateSet are set globally, contrary to the per
* Material states that can be set on a Qt3D::QRenderPass. By default an empty
* Qt3D::QStateSet will result in all render states being disabled when
* executed. Adding a Qt3D::QRenderState state explicitly enables that render
* state at runtime.
*
* \since 5.5
*
* \sa Qt3D::QRenderState, Qt3D::QRenderPass
*/
QStateSet::QStateSet(QNode *parent)
: QFrameGraphNode(*new QStateSetPrivate, parent)
{
}
QStateSet::QStateSet(QStateSetPrivate &dd, QNode *parent)
: QFrameGraphNode(dd, parent)
{
}
QStateSet::~QStateSet()
{
}
void QStateSet::copy(const QNode *ref)
{
QFrameGraphNode::copy(ref);
const QStateSet *other = static_cast<const QStateSet*>(ref);
Q_FOREACH (QRenderState *renderState, other->d_func()->m_renderStates)
addRenderState(qobject_cast<QRenderState *>(QNode::clone(renderState)));
}
/*!
* Adds a new Qt3D::QRenderState \a state to the Qt3D::QStateSet instance.
*
* \note Not setting any Qt3D::QRenderState state on a Qt3D::QStateSet instance
* implies all the render states will be disabled at render time.
*/
void QStateSet::addRenderState(QRenderState *state)
{
Q_D(QStateSet);
if (!d->m_renderStates.contains(state)) {
d->m_renderStates.append(state);
if (!state->parent())
state->setParent(this);
if (d->m_changeArbiter != Q_NULLPTR) {
QScenePropertyChangePtr change(new QScenePropertyChange(NodeAdded, QSceneChange::Node, id()));
change->setPropertyName("renderState");
change->setValue(QVariant::fromValue(QNodePtr(QNode::clone(state))));
d->notifyObservers(change);
}
}
}
/*!
* Removes the Qt3D::QRenderState \a state from the Qt3D::QStateSet instance.
*/
void QStateSet::removeRenderState(QRenderState *state)
{
Q_D(QStateSet);
if (d->m_changeArbiter != Q_NULLPTR) {
QScenePropertyChangePtr change(new QScenePropertyChange(NodeRemoved, QSceneChange::Node, id()));
change->setPropertyName("renderState");
change->setValue(QVariant::fromValue(state->id()));
d->notifyObservers(change);
}
d->m_renderStates.removeOne(state);
}
/*!
* Returns the list of Qt3D::QRenderState that compose the Qt3D::QStateSet instance.
*/
QList<QRenderState *> QStateSet::renderStates() const
{
Q_D(const QStateSet);
return d->m_renderStates;
}
} // Qt3D
QT_END_NAMESPACE
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