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/****************************************************************************
**
** Copyright (C) 2015 Klaralvdalens Datakonsult AB (KDAB).
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt3D 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://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.LGPL3 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-3.0.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 (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qstateset.h"
#include "qstateset_p.h"
#include <Qt3DCore/qscenepropertychange.h>
#include <Qt3DRender/qrenderstate.h>
QT_BEGIN_NAMESPACE
using namespace Qt3DCore;
namespace Qt3DRender {
/*!
\class Qt3DRender::QStateSetPrivate
\internal
*/
QStateSetPrivate::QStateSetPrivate()
: QFrameGraphNodePrivate()
{
}
/*!
* \class Qt3DRender::QStateSet
* \inmodule Qt3DRender
*
* \brief The QStateSet \l {QFrameGraphNode}{FrameGraph} node offers a way of
* specifying a set of QRenderState objects to be applied during the execution
* of a framegraph branch.
*
* States set on a QStateSet are set globally, contrary to the per-material
* states that can be set on a QRenderPass. By default, an empty
* QStateSet will result in all render states being disabled when
* executed. Adding a QRenderState state explicitly enables that render
* state at runtime.
*
* \since 5.5
*
* \sa QRenderState, QRenderPass
*/
QStateSet::QStateSet(QNode *parent)
: QFrameGraphNode(*new QStateSetPrivate, parent)
{
}
QStateSet::QStateSet(QStateSetPrivate &dd, QNode *parent)
: QFrameGraphNode(dd, parent)
{
}
QStateSet::~QStateSet()
{
QNode::cleanup();
}
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 QRenderState \a state to the QStateSet instance.
*
* \note Not setting any QRenderState state on a 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");
// Since we have no RenderState managers, we need to send a clone
change->setValue(QVariant::fromValue(QNodePtr(QNode::clone(state))));
d->notifyObservers(change);
}
}
}
/*!
* Removes the QRenderState \a state from the 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 QRenderState objects that compose the QStateSet instance.
*/
QList<QRenderState *> QStateSet::renderStates() const
{
Q_D(const QStateSet);
return d->m_renderStates;
}
} // namespace Qt3DRender
QT_END_NAMESPACE
|
