QwtPlotMarker Class Reference

Inheritance diagram for QwtPlotMarker:

Inheritance graph
Collaboration diagram for QwtPlotMarker:

Collaboration graph
List of all members.

Detailed Description

A class for drawing markers.

A marker can be a horizontal line, a vertical line, a symbol, a label or any combination of them, which can be drawn around a center point inside a bounding rectangle.

The QwtPlotMarker::setSymbol() member assigns a symbol to the marker. The symbol is drawn at the specified point.

With QwtPlotMarker::setLabel(), a label can be assigned to the marker. The QwtPlotMarker::setLabelAlignment() member specifies where the label is drawn. All the Align*-constants in Qt::AlignmentFlags (see Qt documentation) are valid. The interpretation of the alignment depends on the marker's line style. The alignment refers to the center point of the marker, which means, for example, that the label would be printed left above the center point if the alignment was set to AlignLeft|AlignTop.

Definition at line 45 of file qwt_plot_marker.h.

Public Types

enum  LineStyle {

Public Member Functions

 QwtPlotMarker ()
virtual ~QwtPlotMarker ()
virtual int rtti () const
double xValue () const
double yValue () const
QwtDoublePoint value () const
void setXValue (double)
void setYValue (double)
void setValue (double, double)
void setValue (const QwtDoublePoint &)
void setLineStyle (LineStyle st)
LineStyle lineStyle () const
void setLinePen (const QPen &p)
const QPen & linePen () const
void setSymbol (const QwtSymbol &s)
const QwtSymbolsymbol () const
void setLabel (const QwtText &)
QwtText label () const
void setLabelAlignment (Qt::Alignment)
Qt::Alignment labelAlignment () const
virtual void draw (QPainter *p, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRect &) const
virtual QwtDoubleRect boundingRect () const

Member Enumeration Documentation

enum QwtPlotMarker::LineStyle

Line styles.

See also:
QwtPlotMarker::setLineStyle, QwtPlotMarker::lineStyle

Definition at line 53 of file qwt_plot_marker.h.

Constructor & Destructor Documentation

QwtPlotMarker::QwtPlotMarker  )  [explicit]

Sets alignment to Qt::AlignCenter, and style to NoLine.

Definition at line 48 of file qwt_plot_marker.cpp.

References QwtPlotItem::setZ().

QwtPlotMarker::~QwtPlotMarker  )  [virtual]


Definition at line 56 of file qwt_plot_marker.cpp.

Member Function Documentation

QwtDoubleRect QwtPlotMarker::boundingRect  )  const [virtual]

An invalid bounding rect: QwtDoubleRect(1.0, 1.0, -2.0, -2.0)

Reimplemented from QwtPlotItem.

Definition at line 350 of file qwt_plot_marker.cpp.

void QwtPlotMarker::draw QPainter *  p,
const QwtScaleMap xMap,
const QwtScaleMap yMap,
const QRect &  r
const [virtual]

Draw the marker.

p Painter
xMap x Scale Map
yMap y Scale Map
r Bounding rect, where to paint

Implements QwtPlotItem.

Definition at line 120 of file qwt_plot_marker.cpp.

References QwtPainter::drawLine(), and QwtScaleMap::transform().

QwtText QwtPlotMarker::label  )  const

the label
See also:

Definition at line 285 of file qwt_plot_marker.cpp.

Referenced by setLabel().

Qt::Alignment QwtPlotMarker::labelAlignment  )  const

the label alignment
See also:

Definition at line 321 of file qwt_plot_marker.cpp.

const QPen & QwtPlotMarker::linePen  )  const

the line pen
See also:

Definition at line 345 of file qwt_plot_marker.cpp.

QwtPlotMarker::LineStyle QwtPlotMarker::lineStyle  )  const

the line style
See also:
For a description of line styles, see QwtPlotMarker::setLineStyle()

Definition at line 242 of file qwt_plot_marker.cpp.

void QwtPlotMarker::setLabel const QwtText label  ) 

Set the label.

label label text
See also:

Definition at line 272 of file qwt_plot_marker.cpp.

References QwtPlotItem::itemChanged(), and label().

void QwtPlotMarker::setLabelAlignment Qt::Alignment  align  ) 

Set the alignment of the label.

The alignment determines where the label is drawn relative to the marker's position.

align Alignment. A combination of AlignTop, AlignBottom, AlignLeft, AlignRight, AlignCenter, AlgnHCenter, AlignVCenter.
See also:

Definition at line 304 of file qwt_plot_marker.cpp.

void QwtPlotMarker::setLinePen const QPen &  p  ) 

Specify a pen for the line.

p New pen
See also:

Definition at line 332 of file qwt_plot_marker.cpp.

References QwtPlotItem::itemChanged().

void QwtPlotMarker::setLineStyle QwtPlotMarker::LineStyle  st  ) 

Set the line style.

st Line style. Can be one of QwtPlotMarker::NoLine, HLine, VLine or Cross
See also:

Definition at line 229 of file qwt_plot_marker.cpp.

References QwtPlotItem::itemChanged().

void QwtPlotMarker::setSymbol const QwtSymbol s  ) 

Assign a symbol.

s New symbol
See also:

Definition at line 252 of file qwt_plot_marker.cpp.

References QwtPlotItem::itemChanged().

void QwtPlotMarker::setValue const QwtDoublePoint &   ) 

Set Value.

Definition at line 85 of file qwt_plot_marker.cpp.

References setValue().

void QwtPlotMarker::setValue double  ,

Set Value.

Definition at line 91 of file qwt_plot_marker.cpp.

References QwtPlotItem::itemChanged().

Referenced by setValue(), setXValue(), and setYValue().

void QwtPlotMarker::setXValue double   ) 

Set X Value.

Definition at line 102 of file qwt_plot_marker.cpp.

References setValue().

void QwtPlotMarker::setYValue double   ) 

Set Y Value.

Definition at line 108 of file qwt_plot_marker.cpp.

References setValue().

const QwtSymbol & QwtPlotMarker::symbol  )  const

the symbol
See also:
setSymbol(), QwtSymbol

Definition at line 262 of file qwt_plot_marker.cpp.

QwtDoublePoint QwtPlotMarker::value  )  const

Return Value.

Definition at line 67 of file qwt_plot_marker.cpp.

double QwtPlotMarker::xValue  )  const

Return x Value.

Definition at line 73 of file qwt_plot_marker.cpp.

double QwtPlotMarker::yValue  )  const

Return y Value.

Definition at line 79 of file qwt_plot_marker.cpp.

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