barsrenderer_p.h - mozsearch

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// Copyright (C) 2023 The Qt Company Ltd.

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

// Qt-Security score:significant reason:default

#ifndef BARSRENDERER_H

#define BARSRENDERER_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 <QtQuick/private/qquicktext_p.h>

#include <QtCore/QHash>

#include <QtCore/QList>

#include <QtCore/QRectF>

#include <QtGui/QColor>

#include <private/qgraphsglobal_p.h>

QT_BEGIN_NAMESPACE

class QGraphsView;

class QBarSeries;

class QBarSet;

class QAbstractSeries;

class QQuickTapHandler;

#if QT_CONFIG(graphs_2d_high_performance_backend)

class QCanvasPainter;

#endif

class BarsRenderer : public QQuickItem

    Q_OBJECT

public:

    struct BarSeriesData {

        QRectF rect;

        QColor color;

        QColor borderColor;

        QString label;

        QColor labelColor;

        float value;

        float borderWidth;

        bool isSelected;

};

    using PaintSnapshot = QHash<QBarSeries *, QList<BarSeriesData>>;

    BarsRenderer(QGraphsView *graph, bool clipPlotArea);

    ~BarsRenderer() override;

#if QT_CONFIG(graphs_2d_high_performance_backend)

    static void paintSnapshot(const PaintSnapshot &snapshot,

                              QCanvasPainter *p);

    PaintSnapshot paintSnapshot() const;

    void synchronizeData();

#endif

    void handlePolish(QBarSeries *series, int barSeriesIndex, int barSeriesCount);

    void updateSeries(QBarSeries *series);

    void seriesAboutToBeRemoved(QAbstractSeries *series);

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

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

    bool handleHoverMove(QHoverEvent *event);

    void handleBarSetsRemoved(const QList<QBarSet *> &sets);

Q_SIGNALS:

private:

    struct BarSelectionRect {

        QBarSeries *series = nullptr;

        QBarSet *barSet = nullptr;

        QList<QRectF> rects;

};

    void updateVerticalBars(QBarSeries *series, qsizetype setCount, qsizetype valuesPerSet,

                            int barSeriesIndex, int barSeriesCount);

    void updateHorizontalBars(QBarSeries *series, qsizetype setCount, qsizetype valuesPerSet,

                              int barSeriesIndex, int barSeriesCount);

    QColor getSetColor(QBarSeries *series, QBarSet *set, qsizetype barSerieIndex);

    QColor getSetSelectedColor(QBarSeries *series, QBarSet *set);

    QColor getSetBorderColor(QBarSeries *series, QBarSet *set, qsizetype barSerieIndex);

    qreal getSetBorderWidth(QBarSeries *series, QBarSet *set);

    QString generateLabelText(QBarSeries *series, qreal value);

    void positionLabelItem(QBarSeries *series, QQuickText *textItem, const BarSeriesData &d);

    void updateComponents(QBarSeries *series);

    void updateValueLabels(QBarSeries *series);

    void onSingleTapped(QEventPoint eventPoint, Qt::MouseButton button);

    void onDoubleTapped(QEventPoint eventPoint, Qt::MouseButton button);

    void onPressedChanged();

    QGraphsView *m_graph = nullptr;

    QHash<QBarSeries *, QList<BarSelectionRect>> m_rectNodesInputRects;

    QHash<QBarSeries *, QList<QQuickItem *>> m_barItems;

    QHash<QBarSeries *, QList<QQuickText *>> m_labelTextItems;

    QHash<QBarSeries *, QList<BarSeriesData>> m_seriesData;

#if QT_CONFIG(graphs_2d_high_performance_backend)

    QHash<QBarSeries *, QList<BarSeriesData>> m_paintSnapshot;

#endif

    QQuickTapHandler *m_tapHandler = nullptr;

    QBarSeries *m_currentHoverSeries = nullptr;

    QBarSeries *m_currentHoverBarSeries = nullptr;

    QBarSet *m_currentHoverBarSet = nullptr;

    qsizetype m_currentHoverBarIndex = -1;

    qsizetype m_colorIndex = -1;

    // Margin between bars.

    float m_barMargin = 2.0;

};

QT_END_NAMESPACE

#endif // BARSRENDERER_H