qdeclarativecirclemapitem_p_p.h

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// Copyright (C) 2020 Paolo Angelelli <paolo.angelelli@gmail.com>

// Copyright (C) 2022 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 QDECLARATIVECIRCLEMAPITEM_P_P_H

#define QDECLARATIVECIRCLEMAPITEM_P_P_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 <QtLocation/private/qlocationglobal_p.h>

#include <QtLocation/private/qdeclarativepolygonmapitem_p_p.h>

#include <QtLocation/private/qdeclarativecirclemapitem_p.h>

QT_BEGIN_NAMESPACE

class QQuickShape;

class QQuickShapePath;

class Q_LOCATION_EXPORT QGeoMapCircleGeometry : public QGeoMapPolygonGeometry

public:

    QGeoMapCircleGeometry();

    void updateSourceAndScreenPointsInvert(const QList<QDoubleVector2D> &circlePath, const QGeoMap &map);

};

class Q_LOCATION_EXPORT QDeclarativeCircleMapItemPrivate

    Q_DISABLE_COPY_MOVE(QDeclarativeCircleMapItemPrivate)

public:

    static const int CircleSamples = 128; // ToDo: make this radius && ZL dependent?

    QDeclarativeCircleMapItemPrivate(QDeclarativeCircleMapItem &circle)

        : m_circle(circle)

    virtual ~QDeclarativeCircleMapItemPrivate();

    virtual void onLinePropertiesChanged() = 0;

    virtual void markSourceDirtyAndUpdate() = 0;

    virtual void onMapSet() = 0;

    virtual void onGeoGeometryChanged() = 0;

    virtual void onItemGeometryChanged() = 0;

    virtual void updatePolish() = 0;

    virtual void afterViewportChanged() = 0;

    virtual QSGNode * updateMapItemPaintNode(QSGNode *oldNode, QQuickItem::UpdatePaintNodeData *data) = 0;

    virtual bool contains(const QPointF &point) const = 0;

    void updateCirclePath()

        if (!m_circle.map() || m_circle.map()->geoProjection().projectionType() != QGeoProjection::ProjectionWebMercator)

            return;

        m_circlePath.clear();

        const QGeoProjectionWebMercator &p = static_cast<const QGeoProjectionWebMercator&>(m_circle.map()->geoProjection());

        if (m_circle.referenceSurface() == QLocation::ReferenceSurface::Map)

            calculatePeripheralPointsSimple(m_circlePath, m_circle.center(), m_circle.radius(), p, CircleSamples);

        else

            calculatePeripheralPointsGreatCircle(m_circlePath, m_circle.center(), m_circle.radius(), p, CircleSamples);

    static int crossEarthPole(const QGeoCoordinate &center, qreal distance);

    static void includeOnePoleInPath(QList<QDoubleVector2D> &path, const QGeoCoordinate &center,

                                      qreal distance, const QGeoProjectionWebMercator &p);

    static void calculatePeripheralPointsSimple(QList<QDoubleVector2D> &path, const QGeoCoordinate &center,

                                   qreal distance, const QGeoProjectionWebMercator &p, int steps);

    static void calculatePeripheralPointsGreatCircle(QList<QDoubleVector2D> &path, const QGeoCoordinate &center,

                                   qreal distance, const QGeoProjectionWebMercator &p, int steps);

    QDeclarativeCircleMapItem &m_circle;

    QList<QDoubleVector2D> m_circlePath;

};

class Q_LOCATION_EXPORT QDeclarativeCircleMapItemPrivateCPU: public QDeclarativeCircleMapItemPrivate

public:

    QDeclarativeCircleMapItemPrivateCPU(QDeclarativeCircleMapItem &circle);

    ~QDeclarativeCircleMapItemPrivateCPU() override;

    void onLinePropertiesChanged() override

        // mark dirty just in case we're a width change

        markSourceDirtyAndUpdate();

    void markSourceDirtyAndUpdate() override

        m_geometry.markSourceDirty();

        m_circle.polishAndUpdate();

    void onMapSet() override

        updateCirclePath();

        markSourceDirtyAndUpdate();

    void onGeoGeometryChanged() override

        updateCirclePath();

        markSourceDirtyAndUpdate();

    void onItemGeometryChanged() override

        onGeoGeometryChanged();

    void afterViewportChanged() override

        markSourceDirtyAndUpdate();

    void updatePolish() override;

    QSGNode * updateMapItemPaintNode(QSGNode *oldNode, QQuickItem::UpdatePaintNodeData *data) override;

    bool contains(const QPointF &point) const override;

    QGeoMapCircleGeometry m_geometry;

    QQuickShape *m_shape = nullptr;

    QQuickShapePath *m_shapePath = nullptr;

    QDeclarativeGeoMapPainterPath *m_painterPath = nullptr;

};

QT_END_NAMESPACE

#endif // QDECLARATIVECIRCLEMAPITEM_P_P_H