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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.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef DATAPARTICLE_H
#define DATAPARTICLE_H
#include "qsgparticlepainter_p.h"
#include <QPointer>
#include <QSet>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Declarative)
class QSGVisualDataModel;
class QSGModelParticleAttached;
class QSGModelParticle : public QSGParticlePainter
{
Q_OBJECT
Q_PROPERTY(QVariant model READ model WRITE setModel NOTIFY modelChanged)
Q_PROPERTY(QDeclarativeComponent *delegate READ delegate WRITE setDelegate NOTIFY delegateChanged)
Q_PROPERTY(int modelCount READ modelCount NOTIFY modelCountChanged)
Q_PROPERTY(bool fade READ fade WRITE setFade NOTIFY fadeChanged)
Q_CLASSINFO("DefaultProperty", "delegate")
public:
explicit QSGModelParticle(QSGItem *parent = 0);
QVariant model() const;
void setModel(const QVariant &);
QDeclarativeComponent *delegate() const;
void setDelegate(QDeclarativeComponent *);
int modelCount() const;
bool fade() const { return m_fade; }
virtual QSGNode *updatePaintNode(QSGNode *, UpdatePaintNodeData *);
virtual void load(QSGParticleData*);
virtual void reload(QSGParticleData*);
static QSGModelParticleAttached *qmlAttachedProperties(QObject *object);
signals:
void modelChanged();
void delegateChanged();
void modelCountChanged();
void fadeChanged();
public slots:
void freeze(QSGItem* item);
void unfreeze(QSGItem* item);
void setFade(bool arg){if(arg == m_fade) return; m_fade = arg; emit fadeChanged();}
protected:
virtual void reset();
virtual void resize(int oldCount, int newCount);
void prepareNextFrame();
private slots:
void updateCount();
void processPending();
private:
bool m_ownModel;
QDeclarativeComponent* m_comp;
QSGVisualDataModel *m_model;
QVariant m_dataSource;
QList<QSGItem*> m_deletables;
QList< int > m_requests;
bool m_fade;
QList<QSGItem*> m_pendingItems;
QVector<QSGItem*> m_items;
QVector<QSGParticleData*> m_data;
QVector<int> m_idx;
QList<int> m_available;
QSet<QSGItem*> m_stasis;
qreal m_lastT;
int m_activeCount;
int m_modelCount;
};
class QSGModelParticleAttached : public QObject
{
Q_OBJECT
Q_PROPERTY(QSGModelParticle* particle READ particle CONSTANT);
public:
QSGModelParticleAttached(QObject* parent)
: QObject(parent), m_mp(0)
{;}
QSGModelParticle* particle() {return m_mp;}
void detach(){emit detached();}
void attach(){emit attached();}
private:
QSGModelParticle* m_mp;
friend class QSGModelParticle;
Q_SIGNALS:
void detached();
void attached();
};
QT_END_NAMESPACE
QML_DECLARE_TYPEINFO(QSGModelParticle, QML_HAS_ATTACHED_PROPERTIES)
QT_END_HEADER
#endif // DATAPARTICLE_H
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