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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 QtDeclarative 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 QDECLARATIVEPARTICLES_H
+#define QDECLARATIVEPARTICLES_H
+
+#include <QtDeclarative/qdeclarativeitem.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Declarative)
+
+class QDeclarativeParticle;
+class QDeclarativeParticles;
+class QDeclarativeParticleMotion : public QObject
+{
+    Q_OBJECT
+public:
+    QDeclarativeParticleMotion(QObject *parent=0);
+
+    virtual void advance(QDeclarativeParticle &, int interval);
+    virtual void created(QDeclarativeParticle &);
+    virtual void destroy(QDeclarativeParticle &);
+};
+
+class QDeclarativeParticleMotionLinear : public QDeclarativeParticleMotion
+{
+    Q_OBJECT
+public:
+    QDeclarativeParticleMotionLinear(QObject *parent=0)
+        : QDeclarativeParticleMotion(parent) {}
+
+    virtual void advance(QDeclarativeParticle &, int interval);
+};
+
+class QDeclarativeParticleMotionGravity : public QDeclarativeParticleMotion
+{
+    Q_OBJECT
+
+    Q_PROPERTY(qreal xattractor READ xAttractor WRITE setXAttractor NOTIFY xattractorChanged)
+    Q_PROPERTY(qreal yattractor READ yAttractor WRITE setYAttractor NOTIFY yattractorChanged)
+    Q_PROPERTY(qreal acceleration READ acceleration WRITE setAcceleration NOTIFY accelerationChanged)
+public:
+    QDeclarativeParticleMotionGravity(QObject *parent=0)
+        : QDeclarativeParticleMotion(parent), _xAttr(0.0), _yAttr(0.0), _accel(0.00005) {}
+
+    qreal xAttractor() const { return _xAttr; }
+    void setXAttractor(qreal x);
+
+    qreal yAttractor() const { return _yAttr; }
+    void setYAttractor(qreal y);
+
+    qreal acceleration() const { return _accel * 1000000; }
+    void setAcceleration(qreal accel);
+
+    virtual void advance(QDeclarativeParticle &, int interval);
+
+Q_SIGNALS:
+    void xattractorChanged();
+    void yattractorChanged();
+    void accelerationChanged();
+
+private:
+    qreal _xAttr;
+    qreal _yAttr;
+    qreal _accel;
+};
+
+class QDeclarativeParticleMotionWander : public QDeclarativeParticleMotion
+{
+    Q_OBJECT
+public:
+    QDeclarativeParticleMotionWander()
+        : QDeclarativeParticleMotion(), particles(0), _xvariance(0), _yvariance(0), _pace(100) {}
+
+    virtual void advance(QDeclarativeParticle &, int interval);
+    virtual void created(QDeclarativeParticle &);
+    virtual void destroy(QDeclarativeParticle &);
+
+    struct Data {
+        qreal x_targetV;
+        qreal y_targetV;
+        qreal x_peak;
+        qreal y_peak;
+        qreal x_var;
+        qreal y_var;
+    };
+
+    Q_PROPERTY(qreal xvariance READ xVariance WRITE setXVariance NOTIFY xvarianceChanged)
+    qreal xVariance() const { return _xvariance * 1000.0; }
+    void setXVariance(qreal var);
+
+    Q_PROPERTY(qreal yvariance READ yVariance WRITE setYVariance NOTIFY yvarianceChanged)
+    qreal yVariance() const { return _yvariance * 1000.0; }
+    void setYVariance(qreal var);
+
+    Q_PROPERTY(qreal pace READ pace WRITE setPace NOTIFY paceChanged)
+    qreal pace() const { return _pace * 1000.0; }
+    void setPace(qreal pace);
+
+Q_SIGNALS:
+    void xvarianceChanged();
+    void yvarianceChanged();
+    void paceChanged();
+
+private:
+    QDeclarativeParticles *particles;
+    qreal _xvariance;
+    qreal _yvariance;
+    qreal _pace;
+};
+
+class QDeclarativeParticlesPrivate;
+class QDeclarativeParticles : public QDeclarativeItem
+{
+    Q_OBJECT
+
+    Q_PROPERTY(QUrl source READ source WRITE setSource NOTIFY sourceChanged)
+    Q_PROPERTY(int count READ count WRITE setCount NOTIFY countChanged)
+    Q_PROPERTY(int emissionRate READ emissionRate WRITE setEmissionRate NOTIFY emissionRateChanged)
+    Q_PROPERTY(qreal emissionVariance READ emissionVariance WRITE setEmissionVariance NOTIFY emissionVarianceChanged)
+    Q_PROPERTY(int lifeSpan READ lifeSpan WRITE setLifeSpan NOTIFY lifeSpanChanged)
+    Q_PROPERTY(int lifeSpanDeviation READ lifeSpanDeviation WRITE setLifeSpanDeviation NOTIFY lifeSpanDeviationChanged)
+    Q_PROPERTY(int fadeInDuration READ fadeInDuration WRITE setFadeInDuration NOTIFY fadeInDurationChanged)
+    Q_PROPERTY(int fadeOutDuration READ fadeOutDuration WRITE setFadeOutDuration NOTIFY fadeOutDurationChanged)
+    Q_PROPERTY(qreal angle READ angle WRITE setAngle NOTIFY angleChanged)
+    Q_PROPERTY(qreal angleDeviation READ angleDeviation WRITE setAngleDeviation NOTIFY angleDeviationChanged)
+    Q_PROPERTY(qreal velocity READ velocity WRITE setVelocity NOTIFY velocityChanged)
+    Q_PROPERTY(qreal velocityDeviation READ velocityDeviation WRITE setVelocityDeviation NOTIFY velocityDeviationChanged)
+    Q_PROPERTY(QDeclarativeParticleMotion *motion READ motion WRITE setMotion NOTIFY motionChanged)
+    Q_CLASSINFO("DefaultProperty", "motion")
+
+public:
+    QDeclarativeParticles(QDeclarativeItem *parent=0);
+    ~QDeclarativeParticles();
+
+    QUrl source() const;
+    void setSource(const QUrl &);
+
+    int count() const;
+    void setCount(int cnt);
+
+    int emissionRate() const;
+    void setEmissionRate(int);
+
+    qreal emissionVariance() const;
+    void setEmissionVariance(qreal);
+
+    int lifeSpan() const;
+    void setLifeSpan(int);
+
+    int lifeSpanDeviation() const;
+    void setLifeSpanDeviation(int);
+
+    int fadeInDuration() const;
+    void setFadeInDuration(int);
+
+    int fadeOutDuration() const;
+    void setFadeOutDuration(int);
+
+    qreal angle() const;
+    void setAngle(qreal);
+
+    qreal angleDeviation() const;
+    void setAngleDeviation(qreal);
+
+    qreal velocity() const;
+    void setVelocity(qreal);
+
+    qreal velocityDeviation() const;
+    void setVelocityDeviation(qreal);
+
+    QDeclarativeParticleMotion *motion() const;
+    void setMotion(QDeclarativeParticleMotion *);
+
+    void paint(QPainter *, const QStyleOptionGraphicsItem *, QWidget *);
+
+public Q_SLOTS:
+    void burst(int count, int emissionRate=-1);
+
+protected:
+    virtual void componentComplete();
+
+Q_SIGNALS:
+    void sourceChanged();
+    void countChanged();
+    void emissionRateChanged();
+    void emissionVarianceChanged();
+    void lifeSpanChanged();
+    void lifeSpanDeviationChanged();
+    void fadeInDurationChanged();
+    void fadeOutDurationChanged();
+    void angleChanged();
+    void angleDeviationChanged();
+    void velocityChanged();
+    void velocityDeviationChanged();
+    void emittingChanged();
+    void motionChanged();
+
+private Q_SLOTS:
+    void imageLoaded();
+
+private:
+    Q_DISABLE_COPY(QDeclarativeParticles)
+    Q_DECLARE_PRIVATE_D(QGraphicsItem::d_ptr.data(), QDeclarativeParticles)
+};
+
+QT_END_NAMESPACE
+
+QML_DECLARE_TYPE(QDeclarativeParticleMotion)
+QML_DECLARE_TYPE(QDeclarativeParticleMotionLinear)
+QML_DECLARE_TYPE(QDeclarativeParticleMotionGravity)
+QML_DECLARE_TYPE(QDeclarativeParticleMotionWander)
+QML_DECLARE_TYPE(QDeclarativeParticles)
+
+QT_END_HEADER
+
+#endif