qgraphicstransform.h

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#ifndef QGRAPHICSTRANSFORM_H
#define QGRAPHICSTRANSFORM_H
 
#include <QtWidgets/qtwidgetsglobal.h>
#include <QtCore/QObject>
#include <QtGui/QVector3D>
#include <QtGui/QTransform>
#include <QtGui/QMatrix4x4>
 
QT_REQUIRE_CONFIG(graphicsview);
 
QT_BEGIN_NAMESPACE
 
class QGraphicsItem;
class QGraphicsTransformPrivate;
 
class Q_WIDGETS_EXPORT QGraphicsTransform : public QObject
{
    Q_OBJECT
public:
    QGraphicsTransform(QObject *parent = nullptr);
    ~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_WIDGETS_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 xScaleChanged)
    Q_PROPERTY(qreal yScale READ yScale WRITE setYScale NOTIFY yScaleChanged)
    Q_PROPERTY(qreal zScale READ zScale WRITE setZScale NOTIFY zScaleChanged)
public:
    QGraphicsScale(QObject *parent = nullptr);
    ~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 override;
 
Q_SIGNALS:
    void originChanged();
    void xScaleChanged();
    void yScaleChanged();
    void zScaleChanged();
    void scaleChanged();
 
private:
    Q_DECLARE_PRIVATE(QGraphicsScale)
};
 
class QGraphicsRotationPrivate;
 
class Q_WIDGETS_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 = nullptr);
    ~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 override;
 
Q_SIGNALS:
    void originChanged();
    void angleChanged();
    void axisChanged();
 
private:
    Q_DECLARE_PRIVATE(QGraphicsRotation)
};
 
QT_END_NAMESPACE
 
#endif // QFXTRANSFORM_H