include/QtWidgets/qgraphicstransform.h

0001 // Copyright (C) 2016 The Qt Company Ltd.
0002 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
0003
0004 #ifndef QGRAPHICSTRANSFORM_H
0005 #define QGRAPHICSTRANSFORM_H
0006
0007 #include <QtWidgets/qtwidgetsglobal.h>
0008 #include <QtCore/QObject>
0009 #include <QtGui/QVector3D>
0010 #include <QtGui/QTransform>
0011 #include <QtGui/QMatrix4x4>
0012
0013 QT_REQUIRE_CONFIG(graphicsview);
0014
0015 QT_BEGIN_NAMESPACE
0016
0017 class QGraphicsItem;
0018 class QGraphicsTransformPrivate;
0019
0020 class Q_WIDGETS_EXPORT QGraphicsTransform : public QObject
0021 {
0022     Q_OBJECT
0023 public:
0024     QGraphicsTransform(QObject *parent = nullptr);
0025     ~QGraphicsTransform();
0026
0027     virtual void applyTo(QMatrix4x4 *matrix) const = 0;
0028
0029 protected Q_SLOTS:
0030     void update();
0031
0032 protected:
0033     QGraphicsTransform(QGraphicsTransformPrivate &p, QObject *parent);
0034
0035 private:
0036     friend class QGraphicsItem;
0037     friend class QGraphicsItemPrivate;
0038     Q_DECLARE_PRIVATE(QGraphicsTransform)
0039 };
0040
0041 class QGraphicsScalePrivate;
0042
0043 class Q_WIDGETS_EXPORT QGraphicsScale : public QGraphicsTransform
0044 {
0045     Q_OBJECT
0046
0047     Q_PROPERTY(QVector3D origin READ origin WRITE setOrigin NOTIFY originChanged)
0048     Q_PROPERTY(qreal xScale READ xScale WRITE setXScale NOTIFY xScaleChanged)
0049     Q_PROPERTY(qreal yScale READ yScale WRITE setYScale NOTIFY yScaleChanged)
0050     Q_PROPERTY(qreal zScale READ zScale WRITE setZScale NOTIFY zScaleChanged)
0051 public:
0052     QGraphicsScale(QObject *parent = nullptr);
0053     ~QGraphicsScale();
0054
0055     QVector3D origin() const;
0056     void setOrigin(const QVector3D &point);
0057
0058     qreal xScale() const;
0059     void setXScale(qreal);
0060
0061     qreal yScale() const;
0062     void setYScale(qreal);
0063
0064     qreal zScale() const;
0065     void setZScale(qreal);
0066
0067     void applyTo(QMatrix4x4 *matrix) const override;
0068
0069 Q_SIGNALS:
0070     void originChanged();
0071     void xScaleChanged();
0072     void yScaleChanged();
0073     void zScaleChanged();
0074     void scaleChanged();
0075
0076 private:
0077     Q_DECLARE_PRIVATE(QGraphicsScale)
0078 };
0079
0080 class QGraphicsRotationPrivate;
0081
0082 class Q_WIDGETS_EXPORT QGraphicsRotation : public QGraphicsTransform
0083 {
0084     Q_OBJECT
0085
0086     Q_PROPERTY(QVector3D origin READ origin WRITE setOrigin NOTIFY originChanged)
0087     Q_PROPERTY(qreal angle READ angle WRITE setAngle NOTIFY angleChanged)
0088     Q_PROPERTY(QVector3D axis READ axis WRITE setAxis NOTIFY axisChanged)
0089 public:
0090     QGraphicsRotation(QObject *parent = nullptr);
0091     ~QGraphicsRotation();
0092
0093     QVector3D origin() const;
0094     void setOrigin(const QVector3D &point);
0095
0096     qreal angle() const;
0097     void setAngle(qreal);
0098
0099     QVector3D axis() const;
0100     void setAxis(const QVector3D &axis);
0101     void setAxis(Qt::Axis axis);
0102
0103     void applyTo(QMatrix4x4 *matrix) const override;
0104
0105 Q_SIGNALS:
0106     void originChanged();
0107     void angleChanged();
0108     void axisChanged();
0109
0110 private:
0111     Q_DECLARE_PRIVATE(QGraphicsRotation)
0112 };
0113
0114 QT_END_NAMESPACE
0115
0116 #endif // QFXTRANSFORM_H