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/****************************************************************************
**
** Copyright (C) 2011 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 ITEMPARTICLE_H
#define ITEMPARTICLE_H
#include "qsgparticlepainter_p.h"
#include <QPointer>
#include <QSet>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Declarative)
class QSGVisualDataModel;
class QSGItemParticleAttached;
class QSGItemParticle : public QSGParticlePainter
{
Q_OBJECT
Q_PROPERTY(bool fade READ fade WRITE setFade NOTIFY fadeChanged)
Q_PROPERTY(QDeclarativeComponent* delegate READ delegate WRITE setDelegate NOTIFY delegateChanged)
public:
explicit QSGItemParticle(QSGItem *parent = 0);
bool fade() const { return m_fade; }
virtual QSGNode *updatePaintNode(QSGNode *, UpdatePaintNodeData *);
static QSGItemParticleAttached *qmlAttachedProperties(QObject *object);
QDeclarativeComponent* delegate() const
{
return m_delegate;
}
signals:
void fadeChanged();
void delegateChanged(QDeclarativeComponent* arg);
public slots:
//TODO: Add a follow mode, where moving the delegate causes the logical particle to go with it?
void freeze(QSGItem* item);
void unfreeze(QSGItem* item);
void take(QSGItem* item,bool prioritize=false);//take by modelparticle
void give(QSGItem* item);//give from modelparticle
void setFade(bool arg){if (arg == m_fade) return; m_fade = arg; emit fadeChanged();}
void setDelegate(QDeclarativeComponent* arg)
{
if (m_delegate != arg) {
m_delegate = arg;
emit delegateChanged(arg);
}
}
protected:
virtual void reset();
virtual void commit(int gIdx, int pIdx);
virtual void initialize(int gIdx, int pIdx);
void prepareNextFrame();
private slots:
void tick();
private:
QList<QSGItem* > m_deletables;
QList< QSGParticleData* > m_loadables;
bool m_fade;
QList<QSGItem*> m_pendingItems;
QList<int> m_available;
QSet<QSGItem*> m_stasis;
qreal m_lastT;
int m_activeCount;
QDeclarativeComponent* m_delegate;
};
class QSGItemParticleAttached : public QObject
{
Q_OBJECT
Q_PROPERTY(QSGItemParticle* particle READ particle CONSTANT);
public:
QSGItemParticleAttached(QObject* parent)
: QObject(parent), m_mp(0)
{;}
QSGItemParticle* particle() {return m_mp;}
void detach(){emit detached();}
void attach(){emit attached();}
private:
QSGItemParticle* m_mp;
friend class QSGItemParticle;
Q_SIGNALS:
void detached();
void attached();
};
QT_END_NAMESPACE
QML_DECLARE_TYPEINFO(QSGItemParticle, QML_HAS_ATTACHED_PROPERTIES)
QT_END_HEADER
#endif // ITEMPARTICLE_H
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