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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Declarative module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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, Nokia gives you certain additional
** rights. These rights are described in the Nokia 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.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef PARTICLE_H
#define PARTICLE_H
#include <QObject>
#include <QDebug>
#include <QPair>
#include "qquickparticlesystem_p.h"
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
class QQuickParticlePainter : public QQuickItem
{
Q_OBJECT
Q_PROPERTY(QQuickParticleSystem* system READ system WRITE setSystem NOTIFY systemChanged)
Q_PROPERTY(QStringList groups READ groups WRITE setGroups NOTIFY groupsChanged)
public:
explicit QQuickParticlePainter(QQuickItem *parent = 0);
//Data Interface to system
void load(QQuickParticleData*);
void reload(QQuickParticleData*);
void setCount(int c);
int count();
void performPendingCommits();//Called from updatePaintNode
QQuickParticleSystem* system() const
{
return m_system;
}
QStringList groups() const
{
return m_groups;
}
signals:
void countChanged();
void systemChanged(QQuickParticleSystem* arg);
void groupsChanged(QStringList arg);
public slots:
void setSystem(QQuickParticleSystem* arg);
void setGroups(QStringList arg)
{
if (m_groups != arg) {
m_groups = arg;
//Note: The system watches this as it has to recalc things when groups change. It will request a reset if necessary
emit groupsChanged(arg);
}
}
void calcSystemOffset(bool resetPending = false);
protected:
/* Reset resets all your internal data structures. But anything attached to a particle should
be in attached data. So reset + reloads should have no visible effect.
###Hunt down all cases where we do a complete reset for convenience and be more targeted
*/
virtual void reset();
virtual void componentComplete();
virtual void initialize(int gIdx, int pIdx){//Called from main thread
Q_UNUSED(gIdx);
Q_UNUSED(pIdx);
}
virtual void commit(int gIdx, int pIdx){//Called in Render Thread
//###If you need to do something on size changed, check m_data size in this? Or we reset you every time?
Q_UNUSED(gIdx);
Q_UNUSED(pIdx);
}
QQuickParticleSystem* m_system;
friend class QQuickParticleSystem;
int m_count;
bool m_pleaseReset;//Used by subclasses, but it's a nice optimization to know when stuff isn't going to matter.
QStringList m_groups;
QPointF m_systemOffset;
private:
QSet<QPair<int,int> > m_pendingCommits;
};
QT_END_NAMESPACE
QT_END_HEADER
#endif // PARTICLE_H
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