QwtPlotAbstractSeriesItem (3)

#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

Base class for plot items representing a series of samples.

QwtPlotAbstractSeriesItem::QwtPlotAbstractSeriesItem (const QString &title = \fCQString::null\fP)\fC [explicit]\fP Constructor

Parameters:

title Title of the curve

QwtPlotAbstractSeriesItem::QwtPlotAbstractSeriesItem (const \fBQwtText\fP &title)\fC [explicit]\fP Constructor

Parameters:

title Title of the curve

QwtPlotAbstractSeriesItem::~QwtPlotAbstractSeriesItem ()\fC [virtual]\fP

Destructor.

void QwtPlotAbstractSeriesItem::draw (QPainter *painter, const \fBQwtScaleMap\fP &xMap, const \fBQwtScaleMap\fP &yMap, const QRectF &canvasRect) const\fC [virtual]\fP

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 \fBQwtScaleMap\fP &xMap, const \fBQwtScaleMap\fP &yMap, const QRectF &canvasRect, intfrom, intto) const\fC [pure virtual]\fP 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 \fBReturns:\fP

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()

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