areachartitem_p.h - mozsearch

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// Copyright (C) 2016 The Qt Company Ltd.

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

//  W A R N I N G

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

//

// This file is not part of the Qt Chart 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.

#ifndef AREACHARTITEM_H

#define AREACHARTITEM_H

#include <QtCharts/QChartGlobal>

#include <private/linechartitem_p.h>

#include <QtCharts/private/qchartglobal_p.h>

#include <QtCharts/QAreaSeries>

#include <QtGui/QPen>

QT_BEGIN_NAMESPACE

class AreaChartItem;

class Q_CHARTS_EXPORT AreaChartItem : public ChartItem

    Q_OBJECT

public:

    AreaChartItem(QAreaSeries *areaSeries, QGraphicsItem* item = 0);

    ~AreaChartItem();

    //from QGraphicsItem

    QRectF boundingRect() const override;

    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) override;

    QPainterPath shape() const override;

    LineChartItem *upperLineItem() const { return m_upper; }

    LineChartItem *lowerLineItem() const { return m_lower; }

    void updatePath();

    void setPresenter(ChartPresenter *presenter) override;

    QAreaSeries *series() const { return m_series; }

    void setUpperSeries(QLineSeries *series);

    void setLowerSeries(QLineSeries *series);

protected:

    void mousePressEvent(QGraphicsSceneMouseEvent *event) override;

    void hoverEnterEvent(QGraphicsSceneHoverEvent *event) override;

    void hoverLeaveEvent(QGraphicsSceneHoverEvent *event) override;

    void mouseReleaseEvent(QGraphicsSceneMouseEvent *event) override;

    void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event) override;

Q_SIGNALS:

    void clicked(const QPointF &point);

    void hovered(const QPointF &point, bool state);

    void pressed(const QPointF &point);

    void released(const QPointF &point);

    void doubleClicked(const QPointF &point);

public Q_SLOTS:

    void handleUpdated();

    void handleDomainUpdated() override;

private:

    void fixEdgeSeriesDomain(LineChartItem *edgeSeries);

    QAreaSeries *m_series;

    LineChartItem *m_upper;

    LineChartItem *m_lower;

    QPainterPath m_path;

    QRectF m_rect;

    QPen m_linePen;

    QPen m_pointPen;

    QBrush m_brush;

    bool m_pointsVisible;

    bool m_pointLabelsVisible;

    QString m_pointLabelsFormat;

    QFont m_pointLabelsFont;

    QColor m_pointLabelsColor;

    bool m_pointLabelsClipping;

    QPointF m_lastMousePos;

    bool m_mousePressed;

};

class Q_CHARTS_EXPORT AreaBoundItem : public LineChartItem

public:

    AreaBoundItem(AreaChartItem *area, QLineSeries *lineSeries,QGraphicsItem* item = 0)

        : LineChartItem(lineSeries, item), m_item(area)

        // We do not actually want to draw anything from LineChartItem.

        // Drawing is done in AreaChartItem only.

        setVisible(false);

    ~AreaBoundItem() {}

    void updateGeometry() override

        // Make sure the series is in a chart before trying to update

        if (m_item->series()->chart()) {

            // Turn off points drawing from component line chart item, as that

            // messes up the fill for area series.

            suppressPoints();

            // Component lineseries are not necessarily themselves on the chart,

            // so get the chart type for them from area chart.

            forceChartType(m_item->series()->chart()->chartType());

            LineChartItem::updateGeometry();

            m_item->updatePath();

private:

    AreaChartItem *m_item;

};

QT_END_NAMESPACE

#endif