qquickpinchhandler_p.h

Enable keyboard shortcuts

// 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

// Qt-Security score:significant reason:default

#ifndef QQUICKPINCHHANDLER_H

#define QQUICKPINCHHANDLER_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists purely as an

// implementation detail.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#include <QtGui/qevent.h>

#include <QtQuick/qquickitem.h>

#include "qquickmultipointhandler_p.h"

#include <private/qquicktranslate_p.h>

#include "qquickdragaxis_p.h"

QT_BEGIN_NAMESPACE

using namespace Qt::StringLiterals;

class Q_QUICK_EXPORT QQuickPinchHandler : public QQuickMultiPointHandler

    Q_OBJECT

    Q_PROPERTY(QQuickDragAxis *scaleAxis READ scaleAxis CONSTANT)

#if QT_DEPRECATED_SINCE(6, 5)

    Q_PROPERTY(qreal minimumScale READ minimumScale WRITE setMinimumScale NOTIFY minimumScaleChanged)

    Q_PROPERTY(qreal maximumScale READ maximumScale WRITE setMaximumScale NOTIFY maximumScaleChanged)

    Q_PROPERTY(qreal scale READ scale NOTIFY updated)

#endif

    Q_PROPERTY(qreal activeScale READ activeScale NOTIFY scaleChanged)

    Q_PROPERTY(qreal persistentScale READ persistentScale WRITE setPersistentScale NOTIFY scaleChanged)

    Q_PROPERTY(QQuickDragAxis *rotationAxis READ rotationAxis CONSTANT)

#if QT_DEPRECATED_SINCE(6, 5)

    Q_PROPERTY(qreal minimumRotation READ minimumRotation WRITE setMinimumRotation NOTIFY minimumRotationChanged)

    Q_PROPERTY(qreal maximumRotation READ maximumRotation WRITE setMaximumRotation NOTIFY maximumRotationChanged)

    Q_PROPERTY(qreal rotation READ rotation NOTIFY updated)

#endif

    Q_PROPERTY(qreal activeRotation READ activeRotation NOTIFY rotationChanged)

    Q_PROPERTY(qreal persistentRotation READ persistentRotation WRITE setPersistentRotation NOTIFY rotationChanged)

    Q_PROPERTY(QQuickDragAxis * xAxis READ xAxis CONSTANT)

    Q_PROPERTY(QQuickDragAxis * yAxis READ yAxis CONSTANT)

#if QT_DEPRECATED_SINCE(6, 5)

    Q_PROPERTY(QVector2D translation READ translation NOTIFY updated)

#endif

    Q_PROPERTY(QPointF activeTranslation READ activeTranslation NOTIFY translationChanged REVISION(6, 5))

    Q_PROPERTY(QPointF persistentTranslation READ persistentTranslation WRITE setPersistentTranslation NOTIFY translationChanged REVISION(6, 5))

    QML_NAMED_ELEMENT(PinchHandler)

    QML_ADDED_IN_VERSION(2, 12)

public:

    explicit QQuickPinchHandler(QQuickItem *parent = nullptr);

    QQuickDragAxis *xAxis() { return &m_xAxis; }

    QQuickDragAxis *yAxis() { return &m_yAxis; }

#if QT_DEPRECATED_SINCE(6, 5)

    QVector2D translation() const { return QVector2D(activeTranslation()); }

#endif

    QPointF activeTranslation() const { return QPointF(m_xAxis.activeValue(), m_yAxis.activeValue()); }

    QPointF persistentTranslation() const { return QPointF(m_xAxis.persistentValue(), m_yAxis.persistentValue()); }

    void setPersistentTranslation(const QPointF &trans);

    QQuickDragAxis *scaleAxis() { return &m_scaleAxis; }

#if QT_DEPRECATED_SINCE(6, 5)

    qreal minimumScale() const { return m_scaleAxis.minimum(); }

    void setMinimumScale(qreal minimumScale);

    qreal maximumScale() const { return m_scaleAxis.maximum(); }

    void setMaximumScale(qreal maximumScale);

    qreal scale() const { return persistentScale(); }

#endif

    qreal activeScale() const { return m_scaleAxis.activeValue(); }

    void setActiveScale(qreal scale);

    qreal persistentScale() const { return m_scaleAxis.persistentValue(); }

    void setPersistentScale(qreal scale);

    QQuickDragAxis *rotationAxis() { return &m_rotationAxis; }

#if QT_DEPRECATED_SINCE(6, 5)

    qreal minimumRotation() const { return m_rotationAxis.minimum(); }

    void setMinimumRotation(qreal minimumRotation);

    qreal maximumRotation() const { return m_rotationAxis.maximum(); }

    void setMaximumRotation(qreal maximumRotation);

    qreal rotation() const { return activeRotation(); }

#endif

    qreal activeRotation() const { return m_rotationAxis.activeValue(); }

    void setActiveRotation(qreal rot);

    qreal persistentRotation() const { return m_rotationAxis.persistentValue(); }

    void setPersistentRotation(qreal rot);

Q_SIGNALS:

    void minimumScaleChanged();

    void maximumScaleChanged();

    void minimumRotationChanged();

    void maximumRotationChanged();

    void updated();

    void scaleChanged(qreal delta);

    void rotationChanged(qreal delta);

    void translationChanged(QVector2D delta);

protected:

    bool wantsPointerEvent(QPointerEvent *event) override;

    void onActiveChanged() override;

    void handlePointerEventImpl(QPointerEvent *event) override;

private:

    QQuickDragAxis m_xAxis = {this, u"x"_s};

    QQuickDragAxis m_yAxis = {this, u"y"_s};

    QQuickDragAxis m_scaleAxis = {this, u"scale"_s, 1};

    QQuickDragAxis m_rotationAxis = {this, u"rotation"_s};

    // internal

    qreal m_startDistance = 0;

    qreal m_accumulatedStartCentroidDistance = 0;

    QPointF m_startTargetPos;

    QList<PointData> m_startAngles;

    QQuickMatrix4x4 m_transform;

};

QT_END_NAMESPACE

#endif // QQUICKPINCHHANDLER_H