splinechartitem_p.h

Enable keyboard shortcuts

// Copyright (C) 2021 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 SPLINECHARTITEM_P_H

#define SPLINECHARTITEM_P_H

#include <QtCharts/QSplineSeries>

#include <private/xychart_p.h>

#include <QtCharts/private/qchartglobal_p.h>

QT_BEGIN_NAMESPACE

class SplineAnimation;

class Q_CHARTS_EXPORT SplineChartItem : public XYChart

    Q_OBJECT

    Q_INTERFACES(QGraphicsItem)

public:

    SplineChartItem(QSplineSeries *series, QGraphicsItem *item = 0);

    //from QGraphicsItem

    QRectF boundingRect() const override;

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

    QPainterPath shape() const override;

    void setControlGeometryPoints(const QList<QPointF> &points);

    QList<QPointF> controlGeometryPoints() const;

    void setAnimation(SplineAnimation *animation);

    ChartAnimation *animation() const override;

public Q_SLOTS:

    void handleSeriesUpdated() override;

protected:

    void updateGeometry() override;

    QList<QPointF> calculateControlPoints(const QList<QPointF> &points);

    QList<qreal> firstControlPoints(const QList<qreal> &list);

    void updateChart(const QList<QPointF> &oldPoints, const QList<QPointF> &newPoints, int index) override;

    void mousePressEvent(QGraphicsSceneMouseEvent *event) override;

    void hoverEnterEvent(QGraphicsSceneHoverEvent *event) override;

    void hoverMoveEvent(QGraphicsSceneHoverEvent *event) override;

    void hoverLeaveEvent(QGraphicsSceneHoverEvent *event) override;

    void mouseReleaseEvent(QGraphicsSceneMouseEvent *event) override;

    void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event) override;

private:

    QSplineSeries *m_series;

    QPainterPath m_path;

    QPainterPath m_pathPolarRight;

    QPainterPath m_pathPolarLeft;

    QPainterPath m_fullPath;

    QRectF m_rect;

    QPen m_linePen;

    QPen m_pointPen;

    bool m_pointsVisible;

    QList<QPointF> m_controlPoints;

    QList<QPointF> m_visiblePoints;

    SplineAnimation *m_animation;

    bool m_pointLabelsVisible;

    qreal m_markerSize;

    QString m_pointLabelsFormat;

    QFont m_pointLabelsFont;

    QColor m_pointLabelsColor;

    bool m_pointLabelsClipping;

    QPointF m_lastMousePos;

    QPointF m_lastHoveredMatchedPos;

    bool m_mousePressed;

    friend class SplineAnimation;

};

QT_END_NAMESPACE

#endif // SPLINECHARTITEM_P_H