customrenderer_p.h

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// Copyright (C) 2025 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only

// Qt-Security score:significant reason:default

#ifndef CUSTOMRENDERER_H

#define CUSTOMRENDERER_H

//

//  W A R N I N G

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

//

// This file is not part of the QtGraphs 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 <QQuickItem>

#include <QtGraphs/qabstractseries.h>

#include <private/qgraphsglobal_p.h>

#include <private/qquickdraghandler_p.h>

QT_BEGIN_NAMESPACE

class QGraphsView;

class QCustomSeries;

class QCustomSeriesCanvasRenderer;

class AxisRenderer;

struct QLegendData;

#if QT_CONFIG(graphs_2d_high_performance_backend)

class QCanvasPainter;

class QCanvasPainterItem;

#endif

class CustomRenderer : public QQuickItem

    Q_PROPERTY(QRectF plotArea READ plotArea NOTIFY plotAreaChanged FINAL)

    Q_OBJECT

public:

    using PaintSnapshot = QList<QCustomSeriesCanvasRenderer *>;

    CustomRenderer(QGraphsView *graph, bool clipPlotArea);

    ~CustomRenderer() override;

#if QT_CONFIG(graphs_2d_high_performance_backend)

    PaintSnapshot paintSnapshot() const;

    void synchronizeData(QCanvasPainterItem *item, QHash<QCustomSeries *, QCustomSeriesCanvasRenderer *> &painters);

    static void paintSnapshot(const PaintSnapshot &snapshot, QCanvasPainter *p);

#endif

    void handlePolish(QCustomSeries *series);

    void afterPolish(QList<QAbstractSeries *> &cleanupSeries);

    void updateSeries(QCustomSeries *series);

    void seriesAboutToBeRemoved(QAbstractSeries *series);

    void afterUpdate(QList<QAbstractSeries *> &cleanupSeries);

    qreal mapX(AxisRenderer *axisRenderer, QCustomSeries *series, qreal x);

    qreal mapY(AxisRenderer *axisRenderer, QCustomSeries *series, qreal y);

    QRectF plotArea() const;

signals:

    void plotAreaChanged();

private:

    struct DataGroup

        QCustomSeries *series = nullptr;

        QList<QQuickItem *> dataItems;

        QQmlComponent *currentDataItem = nullptr;

        QQmlComponent *previousDataItem = nullptr;

};

    QGraphsView *m_graph = nullptr;

    QMap<QCustomSeries *, DataGroup *> m_groups;

#if QT_CONFIG(graphs_2d_high_performance_backend)

    PaintSnapshot m_paintSnapshot;

    QSet<QCustomSeries *> m_removedCustomSeries;

#endif

    // Render area variables

    qreal m_maxVertical = 0;

    qreal m_maxHorizontal = 0;

    qreal m_verticalOffset = 0;

    qreal m_horizontalOffset = 0;

    qreal m_areaWidth = 0;

    qreal m_areaHeight = 0;

    QRectF m_plotArea;

    void hideDelegates(QCustomSeries *series);

};

QT_END_NAMESPACE

#endif // CUSTOMRENDERER_H