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39 
40 #ifndef QGRAPHICSTRANSFORM_H
41 #define QGRAPHICSTRANSFORM_H
42 
43 #include <QtWidgets/qtwidgetsglobal.h>
44 #include <QtCore/QObject>
45 #include <QtGui/QVector3D>
46 #include <QtGui/QTransform>
47 #include <QtGui/QMatrix4x4>
48 
49 QT_REQUIRE_CONFIG(graphicsview);
50 
51 QT_BEGIN_NAMESPACE
52 
53 class QGraphicsItem;
54 class QGraphicsTransformPrivate;
55 
56 class Q_WIDGETS_EXPORT QGraphicsTransform : public QObject
57 {
58     Q_OBJECT
59 public:
60     QGraphicsTransform(QObject *parent = nullptr);
61     ~QGraphicsTransform();
62 
63     virtual void applyTo(QMatrix4x4 *matrix) const = 0;
64 
65 protected Q_SLOTS:
66     void update();
67 
68 protected:
69     QGraphicsTransform(QGraphicsTransformPrivate &p, QObject *parent);
70 
71 private:
72     friend class QGraphicsItem;
73     friend class QGraphicsItemPrivate;
74     Q_DECLARE_PRIVATE(QGraphicsTransform)
75 };
76 
77 class QGraphicsScalePrivate;
78 
79 class Q_WIDGETS_EXPORT QGraphicsScale : public QGraphicsTransform
80 {
81     Q_OBJECT
82 
83     Q_PROPERTY(QVector3D origin READ origin WRITE setOrigin NOTIFY originChanged)
84     Q_PROPERTY(qreal xScale READ xScale WRITE setXScale NOTIFY xScaleChanged)
85     Q_PROPERTY(qreal yScale READ yScale WRITE setYScale NOTIFY yScaleChanged)
86     Q_PROPERTY(qreal zScale READ zScale WRITE setZScale NOTIFY zScaleChanged)
87 public:
88     QGraphicsScale(QObject *parent = nullptr);
89     ~QGraphicsScale();
90 
91     QVector3D origin() const;
92     void setOrigin(const QVector3D &point);
93 
94     qreal xScale() const;
95     void setXScale(qreal);
96 
97     qreal yScale() const;
98     void setYScale(qreal);
99 
100     qreal zScale() const;
101     void setZScale(qreal);
102 
103     void applyTo(QMatrix4x4 *matrix) const override;
104 
105 Q_SIGNALS:
106     void originChanged();
107     void xScaleChanged();
108     void yScaleChanged();
109     void zScaleChanged();
110     void scaleChanged();
111 
112 private:
113     Q_DECLARE_PRIVATE(QGraphicsScale)
114 };
115 
116 class QGraphicsRotationPrivate;
117 
118 class Q_WIDGETS_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 = nullptr);
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 override;
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 #endif // QFXTRANSFORM_H
153