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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
49QT_REQUIRE_CONFIG(graphicsview);
50
51QT_BEGIN_NAMESPACE
52
53class QGraphicsItem;
54class QGraphicsTransformPrivate;
55
56class Q_WIDGETS_EXPORT QGraphicsTransform : public QObject
57{
58 Q_OBJECT
59public:
60 QGraphicsTransform(QObject *parent = nullptr);
61 ~QGraphicsTransform();
62
63 virtual void applyTo(QMatrix4x4 *matrix) const = 0;
64
65protected Q_SLOTS:
66 void update();
67
68protected:
69 QGraphicsTransform(QGraphicsTransformPrivate &p, QObject *parent);
70
71private:
72 friend class QGraphicsItem;
73 friend class QGraphicsItemPrivate;
74 Q_DECLARE_PRIVATE(QGraphicsTransform)
75};
76
77class QGraphicsScalePrivate;
78
79class 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)
87public:
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
105Q_SIGNALS:
106 void originChanged();
107 void xScaleChanged();
108 void yScaleChanged();
109 void zScaleChanged();
110 void scaleChanged();
111
112private:
113 Q_DECLARE_PRIVATE(QGraphicsScale)
114};
115
116class QGraphicsRotationPrivate;
117
118class 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)
125public:
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
141Q_SIGNALS:
142 void originChanged();
143 void angleChanged();
144 void axisChanged();
145
146private:
147 Q_DECLARE_PRIVATE(QGraphicsRotation)
148};
149
150QT_END_NAMESPACE
151
152#endif // QFXTRANSFORM_H
153

source code of qtbase/src/widgets/graphicsview/qgraphicstransform.h