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****************************************************************************/

#ifndef QGRAPHICSTRANSFORM_H
#define QGRAPHICSTRANSFORM_H

#include <QtCore/QObject>
#include <QtGui/QVector3D>
#include <QtGui/QTransform>
#include <QtGui/QMatrix4x4>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Gui)

class QGraphicsItem;
class QGraphicsTransformPrivate;

class Q_GUI_EXPORT QGraphicsTransform : public QObject
{
    Q_OBJECT
public:
    QGraphicsTransform(QObject *parent = 0);
    ~QGraphicsTransform();

    virtual void applyTo(QMatrix4x4 *matrix) const = 0;

protected Q_SLOTS:
    void update();

protected:
    QGraphicsTransform(QGraphicsTransformPrivate &p, QObject *parent);

private:
    friend class QGraphicsItem;
    friend class QGraphicsItemPrivate;
    Q_DECLARE_PRIVATE(QGraphicsTransform)
};

class QGraphicsScalePrivate;

class Q_GUI_EXPORT QGraphicsScale : public QGraphicsTransform
{
    Q_OBJECT

    Q_PROPERTY(QVector3D origin READ origin WRITE setOrigin NOTIFY originChanged)
    Q_PROPERTY(qreal xScale READ xScale WRITE setXScale NOTIFY scaleChanged)
    Q_PROPERTY(qreal yScale READ yScale WRITE setYScale NOTIFY scaleChanged)
    Q_PROPERTY(qreal zScale READ zScale WRITE setZScale NOTIFY scaleChanged)
public:
    QGraphicsScale(QObject *parent = 0);
    ~QGraphicsScale();

    QVector3D origin() const;
    void setOrigin(const QVector3D &point);

    qreal xScale() const;
    void setXScale(qreal);

    qreal yScale() const;
    void setYScale(qreal);

    qreal zScale() const;
    void setZScale(qreal);

    void applyTo(QMatrix4x4 *matrix) const;

Q_SIGNALS:
    void originChanged();
    void scaleChanged();

private:
    Q_DECLARE_PRIVATE(QGraphicsScale)
};

class QGraphicsRotationPrivate;

class Q_GUI_EXPORT QGraphicsRotation : public QGraphicsTransform
{
    Q_OBJECT

    Q_PROPERTY(QVector3D origin READ origin WRITE setOrigin NOTIFY originChanged)
    Q_PROPERTY(qreal angle READ angle WRITE setAngle NOTIFY angleChanged)
    Q_PROPERTY(QVector3D axis READ axis WRITE setAxis NOTIFY axisChanged)
public:
    QGraphicsRotation(QObject *parent = 0);
    ~QGraphicsRotation();

    QVector3D origin() const;
    void setOrigin(const QVector3D &point);

    qreal angle() const;
    void setAngle(qreal);

    QVector3D axis() const;
    void setAxis(const QVector3D &axis);
    void setAxis(Qt::Axis axis);

    void applyTo(QMatrix4x4 *matrix) const;

Q_SIGNALS:
    void originChanged();
    void angleChanged();
    void axisChanged();

private:
    Q_DECLARE_PRIVATE(QGraphicsRotation)
};

QT_END_NAMESPACE

QT_END_HEADER

#endif // QFXTRANSFORM_H