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
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