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130 lines
3.4 KiB
130 lines
3.4 KiB
/* -*- mode: C++ ; c-file-style: "stroustrup" -*- ***************************** |
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* Qwt Widget Library |
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* Copyright (C) 1997 Josef Wilgen |
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* Copyright (C) 2002 Uwe Rathmann |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the Qwt License, Version 1.0 |
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*****************************************************************************/ |
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#ifndef QWT_PLOT_MARKER_H |
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#define QWT_PLOT_MARKER_H |
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#include <qpen.h> |
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#include <qfont.h> |
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#include <qstring.h> |
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#include <qbrush.h> |
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#include "qwt_global.h" |
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#include "qwt_plot_item.h" |
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class QRectF; |
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class QwtText; |
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class QwtSymbol; |
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/*! |
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\brief A class for drawing markers |
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A marker can be a horizontal line, a vertical line, |
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a symbol, a label or any combination of them, which can |
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be drawn around a center point inside a bounding rectangle. |
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The setSymbol() member assigns a symbol to the marker. |
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The symbol is drawn at the specified point. |
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With setLabel(), a label can be assigned to the marker. |
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The setLabelAlignment() member specifies where the label is |
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drawn. All the Align*-constants in Qt::AlignmentFlags (see Qt documentation) |
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are valid. The interpretation of the alignment depends on the marker's |
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line style. The alignment refers to the center point of |
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the marker, which means, for example, that the label would be printed |
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left above the center point if the alignment was set to |
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Qt::AlignLeft | Qt::AlignTop. |
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\note QwtPlotTextLabel is intended to align a text label |
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according to the geometry of canvas |
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( unrelated to plot coordinates ) |
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*/ |
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class QWT_EXPORT QwtPlotMarker: public QwtPlotItem |
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{ |
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public: |
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/*! |
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Line styles. |
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\sa setLineStyle(), lineStyle() |
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*/ |
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enum LineStyle |
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{ |
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//! No line |
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NoLine, |
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//! A horizontal line |
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HLine, |
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//! A vertical line |
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VLine, |
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//! A crosshair |
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Cross |
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}; |
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explicit QwtPlotMarker( const QString &title = QString::null ); |
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explicit QwtPlotMarker( const QwtText &title ); |
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virtual ~QwtPlotMarker(); |
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virtual int rtti() const; |
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double xValue() const; |
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double yValue() const; |
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QPointF value() const; |
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void setXValue( double ); |
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void setYValue( double ); |
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void setValue( double, double ); |
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void setValue( const QPointF & ); |
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void setLineStyle( LineStyle st ); |
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LineStyle lineStyle() const; |
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void setLinePen( const QColor &, qreal width = 0.0, Qt::PenStyle = Qt::SolidLine ); |
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void setLinePen( const QPen &p ); |
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const QPen &linePen() const; |
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void setSymbol( const QwtSymbol * ); |
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const QwtSymbol *symbol() const; |
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void setLabel( const QwtText& ); |
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QwtText label() const; |
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void setLabelAlignment( Qt::Alignment ); |
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Qt::Alignment labelAlignment() const; |
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void setLabelOrientation( Qt::Orientation ); |
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Qt::Orientation labelOrientation() const; |
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void setSpacing( int ); |
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int spacing() const; |
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virtual void draw( QPainter *p, |
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const QwtScaleMap &xMap, const QwtScaleMap &yMap, |
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const QRectF & ) const; |
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virtual QRectF boundingRect() const; |
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virtual QwtGraphic legendIcon( int index, const QSizeF & ) const; |
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protected: |
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virtual void drawLines( QPainter *, |
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const QRectF &, const QPointF & ) const; |
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virtual void drawLabel( QPainter *, |
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const QRectF &, const QPointF & ) const; |
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private: |
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class PrivateData; |
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PrivateData *d_data; |
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}; |
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#endif
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