qwt_plot_marker.h

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/******************************************************************************
 * Qwt Widget Library
 * Copyright (C) 1997   Josef Wilgen
 * Copyright (C) 2002   Uwe Rathmann
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the Qwt License, Version 1.0
 *****************************************************************************/

#ifndef QWT_PLOT_MARKER_H
#define QWT_PLOT_MARKER_H

#include "qwt_global.h"
#include "qwt_plot_item.h"

class QString;
class QRectF;
class QwtText;
class QwtSymbol;

class QWT_EXPORT QwtPlotMarker : public QwtPlotItem
{
  public:

    enum LineStyle
    {
        NoLine,

        HLine,

        VLine,

        Cross
    };

    explicit QwtPlotMarker();
    explicit QwtPlotMarker( const QString& title );
    explicit QwtPlotMarker( const QwtText& title );

    virtual ~QwtPlotMarker();

    virtual int rtti() const QWT_OVERRIDE;

    double xValue() const;
    double yValue() const;
    QPointF value() const;

    void setXValue( double );
    void setYValue( double );
    void setValue( double, double );
    void setValue( const QPointF& );

    void setLineStyle( LineStyle );
    LineStyle lineStyle() const;

    void setLinePen( const QColor&, qreal width = 0.0, Qt::PenStyle = Qt::SolidLine );
    void setLinePen( const QPen& );
    const QPen& linePen() const;

    void setSymbol( const QwtSymbol* );
    const QwtSymbol* symbol() const;

    void setLabel( const QwtText& );
    QwtText label() const;

    void setLabelAlignment( Qt::Alignment );
    Qt::Alignment labelAlignment() const;

    void setLabelOrientation( Qt::Orientation );
    Qt::Orientation labelOrientation() const;

    void setSpacing( int );
    int spacing() const;

    virtual void draw( QPainter*,
        const QwtScaleMap& xMap, const QwtScaleMap& yMap,
        const QRectF& ) const QWT_OVERRIDE;

    virtual QRectF boundingRect() const QWT_OVERRIDE;

    virtual QwtGraphic legendIcon(
        int index, const QSizeF& ) const QWT_OVERRIDE;

  protected:
    virtual void drawLines( QPainter*,
        const QRectF&, const QPointF& ) const;

    virtual void drawSymbol( QPainter*,
        const QRectF&, const QPointF& ) const;

    virtual void drawLabel( QPainter*,
        const QRectF&, const QPointF& ) const;

  private:

    class PrivateData;
    PrivateData* m_data;
};

#endif