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QwtPlotAbstractSeriesItem(3) Qwt User's Guide QwtPlotAbstractSeriesItem(3)

NAME

QwtPlotAbstractSeriesItem -
Base class for plot items representing a series of samples.

SYNOPSIS

#include <qwt_plot_seriesitem.h>
Inherits QwtPlotItem.
Inherited by QwtPlotSeriesItem< T >, QwtPlotSeriesItem< QPointF >, QwtPlotSeriesItem< QwtIntervalSample >, and QwtPlotSeriesItem< QwtPoint3D >.

Public Member Functions


QwtPlotAbstractSeriesItem (const QString &title=QString::null)
 
QwtPlotAbstractSeriesItem (const QwtText &title)
 
virtual ~QwtPlotAbstractSeriesItem ()
 
void setOrientation (Qt::Orientation)
 
Qt::Orientation orientation () const
 
virtual void draw (QPainter *p, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &) const
 
virtual void drawSeries (QPainter *painter, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, int from, int to) const =0
 

Detailed Description

Base class for plot items representing a series of samples.

Constructor & Destructor Documentation

QwtPlotAbstractSeriesItem::QwtPlotAbstractSeriesItem (const QString &title = QString::null) [explicit] Constructor

Parameters:
title Title of the curve

QwtPlotAbstractSeriesItem::QwtPlotAbstractSeriesItem (const QwtText &title) [explicit] Constructor

Parameters:
title Title of the curve

QwtPlotAbstractSeriesItem::~QwtPlotAbstractSeriesItem () [virtual]

Destructor.

Member Function Documentation

void QwtPlotAbstractSeriesItem::draw (QPainter *painter, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect) const [virtual]

Draw the complete series. Parameters:
painter Painter
 
xMap Maps x-values into pixel coordinates.
 
yMap Maps y-values into pixel coordinates.
 
canvasRect Contents rect of the canvas
Implements QwtPlotItem.

virtual void QwtPlotAbstractSeriesItem::drawSeries (QPainter *painter, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, intfrom, intto) const [pure virtual] Draw a subset of the samples

Parameters:
painter Painter
 
xMap Maps x-values into pixel coordinates.
 
yMap Maps y-values into pixel coordinates.
 
canvasRect Contents rect of the canvas
 
from Index of the first point to be painted
 
to Index of the last point to be painted. If to < 0 the curve will be painted to its last point.
Implemented in QwtPlotCurve, QwtPlotHistogram, QwtPlotIntervalCurve, and QwtPlotSpectroCurve.

Qt::Orientation QwtPlotAbstractSeriesItem::orientation () const Returns:

Orientation of the plot item
See also:
setOrientation()

void QwtPlotAbstractSeriesItem::setOrientation (Qt::Orientationorientation) Set the orientation of the item.

The orientation() might be used in specific way by a plot item. F.e. a QwtPlotCurve uses it to identify how to display the curve int QwtPlotCurve::Steps or QwtPlotCurve::Sticks style.
See also:
orientation()

Author

Generated automatically by Doxygen for Qwt User's Guide from the source code.
Fri Apr 15 2011 Version 6.0.0