QwtPlotSeriesItem.3
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.TH "QwtPlotSeriesItem" 3 "Sat Jan 26 2013" "Version 6.1-rc3" "Qwt User's Guide" \" -*- nroff -*-
.ad l
.nh
.SH NAME
QwtPlotSeriesItem \-
.PP
Base class for plot items representing a series of samples\&.
.SH SYNOPSIS
.br
.PP
.PP
\fC#include <qwt_plot_seriesitem\&.h>\fP
.PP
Inherits \fBQwtPlotItem\fP, and \fBQwtAbstractSeriesStore\fP\&.
.PP
Inherited by \fBQwtPlotAbstractBarChart\fP, \fBQwtPlotCurve\fP, \fBQwtPlotHistogram\fP, \fBQwtPlotIntervalCurve\fP, \fBQwtPlotSpectroCurve\fP, and \fBQwtPlotTradingCurve\fP\&.
.SS "Public Member Functions"
.in +1c
.ti -1c
.RI "\fBQwtPlotSeriesItem\fP (const QString &\fBtitle\fP=QString::null)"
.br
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.RI "\fBQwtPlotSeriesItem\fP (const \fBQwtText\fP &\fBtitle\fP)"
.br
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.RI "virtual \fB~QwtPlotSeriesItem\fP ()"
.br
.RI "\fIDestructor\&. \fP"
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.RI "void \fBsetOrientation\fP (Qt::Orientation)"
.br
.ti -1c
.RI "Qt::Orientation \fBorientation\fP () const "
.br
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.RI "virtual void \fBdraw\fP (QPainter *p, const \fBQwtScaleMap\fP &xMap, const \fBQwtScaleMap\fP &yMap, const QRectF &) const "
.br
.RI "\fIDraw the complete series\&. \fP"
.ti -1c
.RI "virtual void \fBdrawSeries\fP (QPainter *painter, const \fBQwtScaleMap\fP &xMap, const \fBQwtScaleMap\fP &yMap, const QRectF &canvasRect, int from, int to) const =0"
.br
.ti -1c
.RI "virtual QRectF \fBboundingRect\fP () const "
.br
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.RI "virtual void \fBupdateScaleDiv\fP (const \fBQwtScaleDiv\fP &, const \fBQwtScaleDiv\fP &)"
.br
.RI "\fIUpdate the item to changes of the axes scale division\&. \fP"
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.SS "Protected Member Functions"
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.RI "virtual void \fBdataChanged\fP ()"
.br
.RI "\fI\fBdataChanged()\fP indicates, that the series has been changed\&. \fP"
.in -1c
.SS "Additional Inherited Members"
.SH "Detailed Description"
.PP
Base class for plot items representing a series of samples\&.
.SH "Constructor & Destructor Documentation"
.PP
.SS "QwtPlotSeriesItem::QwtPlotSeriesItem (const QString &title = \fCQString::null\fP)\fC [explicit]\fP"
Constructor
.PP
\fBParameters:\fP
.RS 4
\fItitle\fP Title of the curve
.RE
.PP
.SS "QwtPlotSeriesItem::QwtPlotSeriesItem (const \fBQwtText\fP &title)\fC [explicit]\fP"
Constructor
.PP
\fBParameters:\fP
.RS 4
\fItitle\fP Title of the curve
.RE
.PP
.SH "Member Function Documentation"
.PP
.SS "QRectF QwtPlotSeriesItem::boundingRect () const\fC [virtual]\fP"
\fBReturns:\fP
.RS 4
An invalid bounding rect: QRectF(1\&.0, 1\&.0, -2\&.0, -2\&.0)
.RE
.PP
\fBNote:\fP
.RS 4
A width or height < 0\&.0 is ignored by the autoscaler
.RE
.PP
.PP
Reimplemented from \fBQwtPlotItem\fP\&.
.PP
Reimplemented in \fBQwtPlotTradingCurve\fP, \fBQwtPlotIntervalCurve\fP, \fBQwtPlotHistogram\fP, \fBQwtPlotBarChart\fP, and \fBQwtPlotMultiBarChart\fP\&.
.SS "void QwtPlotSeriesItem::draw (QPainter *painter, const \fBQwtScaleMap\fP &xMap, const \fBQwtScaleMap\fP &yMap, const QRectF &canvasRect) const\fC [virtual]\fP"
.PP
Draw the complete series\&. \fBParameters:\fP
.RS 4
\fIpainter\fP Painter
.br
\fIxMap\fP Maps x-values into pixel coordinates\&.
.br
\fIyMap\fP Maps y-values into pixel coordinates\&.
.br
\fIcanvasRect\fP Contents rectangle of the canvas
.RE
.PP
.PP
Implements \fBQwtPlotItem\fP\&.
.SS "virtual void QwtPlotSeriesItem::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
.PP
\fBParameters:\fP
.RS 4
\fIpainter\fP Painter
.br
\fIxMap\fP Maps x-values into pixel coordinates\&.
.br
\fIyMap\fP Maps y-values into pixel coordinates\&.
.br
\fIcanvasRect\fP Contents rectangle of the canvas
.br
\fIfrom\fP Index of the first point to be painted
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\fIto\fP Index of the last point to be painted\&. If to < 0 the curve will be painted to its last point\&.
.RE
.PP
.PP
Implemented in \fBQwtPlotCurve\fP, \fBQwtPlotTradingCurve\fP, \fBQwtPlotIntervalCurve\fP, \fBQwtPlotHistogram\fP, \fBQwtPlotBarChart\fP, \fBQwtPlotMultiBarChart\fP, and \fBQwtPlotSpectroCurve\fP\&.
.SS "Qt::Orientation QwtPlotSeriesItem::orientation () const"
\fBReturns:\fP
.RS 4
Orientation of the plot item
.RE
.PP
\fBSee Also:\fP
.RS 4
\fBsetOrientation()\fP
.RE
.PP
.SS "void QwtPlotSeriesItem::setOrientation (Qt::Orientationorientation)"
Set the orientation of the item\&.
.PP
The \fBorientation()\fP might be used in specific way by a plot item\&. F\&.e\&. a \fBQwtPlotCurve\fP uses it to identify how to display the curve int \fBQwtPlotCurve::Steps\fP or \fBQwtPlotCurve::Sticks\fP style\&.
.PP
\fBSee Also:\fP
.RS 4
\fBorientation()\fP
.RE
.PP
.SS "void QwtPlotSeriesItem::updateScaleDiv (const \fBQwtScaleDiv\fP &xScaleDiv, const \fBQwtScaleDiv\fP &yScaleDiv)\fC [virtual]\fP"
.PP
Update the item to changes of the axes scale division\&. Update the item, when the axes of plot have changed\&. The default implementation does nothing, but items that depend on the scale division (like QwtPlotGrid()) have to reimplement \fBupdateScaleDiv()\fP
.PP
\fBupdateScaleDiv()\fP is only called when the ScaleInterest interest is enabled\&. The default implementation does nothing\&.
.PP
\fBParameters:\fP
.RS 4
\fIxScaleDiv\fP Scale division of the x-axis
.br
\fIyScaleDiv\fP Scale division of the y-axis
.RE
.PP
\fBSee Also:\fP
.RS 4
\fBQwtPlot::updateAxes()\fP, \fBScaleInterest\fP
.RE
.PP
.PP
Reimplemented from \fBQwtPlotItem\fP\&.
.SH "Author"
.PP
Generated automatically by Doxygen for Qwt User's Guide from the source code\&.