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    41 

    42 #ifndef QGRAPHICSTRANSFORM_H

    43 #define QGRAPHICSTRANSFORM_H

    44 

    45 #include <QtCore/QObject>

    46 #include <QtGui/QVector3D>

    47 #include <QtGui/QTransform>

    48 #include <QtGui/QMatrix4x4>

    49 

    50 QT_BEGIN_HEADER

    51 

    52 QT_BEGIN_NAMESPACE

    53 

    54 QT_MODULE(Gui)

    55 

    56 class QGraphicsItem;

    57 class QGraphicsTransformPrivate;

    58 

    59 class Q_GUI_EXPORT QGraphicsTransform : public QObject

    60 {

    61     Q_OBJECT

    62 public:

    63     QGraphicsTransform(QObject *parent = 0);

    64     ~QGraphicsTransform();

    65 

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

    67 

    68 protected Q_SLOTS:

    69     void update();

    70 

    71 protected:

    72     QGraphicsTransform(QGraphicsTransformPrivate &p, QObject *parent);

    73 

    74 private:

    75     friend class QGraphicsItem;

    76     friend class QGraphicsItemPrivate;

    77     Q_DECLARE_PRIVATE(QGraphicsTransform)

    78 };

    79 

    80 class QGraphicsScalePrivate;

    81 

    82 class Q_GUI_EXPORT QGraphicsScale : public QGraphicsTransform

    83 {

    84     Q_OBJECT

    85 

    86     Q_PROPERTY(QVector3D origin READ origin WRITE setOrigin NOTIFY originChanged)

    87     Q_PROPERTY(qreal xScale READ xScale WRITE setXScale NOTIFY scaleChanged)

    88     Q_PROPERTY(qreal yScale READ yScale WRITE setYScale NOTIFY scaleChanged)

    89     Q_PROPERTY(qreal zScale READ zScale WRITE setZScale NOTIFY scaleChanged)

    90 public:

    91     QGraphicsScale(QObject *parent = 0);

    92     ~QGraphicsScale();

    93 

    94     QVector3D origin() const;

    95     void setOrigin(const QVector3D &point);

    96 

    97     qreal xScale() const;

    98     void setXScale(qreal);

    99 

   100     qreal yScale() const;

   101     void setYScale(qreal);

   102 

   103     qreal zScale() const;

   104     void setZScale(qreal);

   105 

   106     void applyTo(QMatrix4x4 *matrix) const;

   107 

   108 Q_SIGNALS:

   109     void originChanged();

   110     void scaleChanged();

   111 

   112 private:

   113     Q_DECLARE_PRIVATE(QGraphicsScale)

   114 };

   115 

   116 class QGraphicsRotationPrivate;

   117 

   118 class Q_GUI_EXPORT QGraphicsRotation : public QGraphicsTransform

   119 {

   120     Q_OBJECT

   121 

   122     Q_PROPERTY(QVector3D origin READ origin WRITE setOrigin NOTIFY originChanged)

   123     Q_PROPERTY(qreal angle READ angle WRITE setAngle NOTIFY angleChanged)

   124     Q_PROPERTY(QVector3D axis READ axis WRITE setAxis NOTIFY axisChanged)

   125 public:

   126     QGraphicsRotation(QObject *parent = 0);

   127     ~QGraphicsRotation();

   128 

   129     QVector3D origin() const;

   130     void setOrigin(const QVector3D &point);

   131 

   132     qreal angle() const;

   133     void setAngle(qreal);

   134 

   135     QVector3D axis() const;

   136     void setAxis(const QVector3D &axis);

   137     void setAxis(Qt::Axis axis);

   138 

   139     void applyTo(QMatrix4x4 *matrix) const;

   140 

   141 Q_SIGNALS:

   142     void originChanged();

   143     void angleChanged();

   144     void axisChanged();

   145 

   146 private:

   147     Q_DECLARE_PRIVATE(QGraphicsRotation)

   148 };

   149 

   150 QT_END_NAMESPACE

   151 

   152 QT_END_HEADER

   153 

   154 #endif // QFXTRANSFORM_H