QwtPlotSvgItem Class Reference

Inheritance diagram for QwtPlotSvgItem:

[legend]Collaboration diagram for QwtPlotSvgItem:

[legend]List of all members.

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Detailed Description

A plot item, which displays data in Scalable Vector Graphics (SVG) format.

SVG images are often used to display maps

Definition at line 31 of file qwt_plot_svgitem.h.

Public Member Functions
	QwtPlotSvgItem (const QString &title=QString::null)
	QwtPlotSvgItem (const QwtText &title)
virtual	~QwtPlotSvgItem ()
bool	loadFile (const QwtDoubleRect &, const QString &fileName)
bool	loadData (const QwtDoubleRect &, const QByteArray &)
virtual QwtDoubleRect	boundingRect () const
virtual void	draw (QPainter *p, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRect &rect) const
virtual int	rtti () const
Protected Member Functions
void	render (QPainter *painter, const QwtDoubleRect &viewBox, const QRect &rect) const
QwtDoubleRect	viewBox (const QwtDoubleRect &area) const

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Constructor & Destructor Documentation

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

Constructor. Sets the following item attributes: QwtPlotItem::AutoScale: true QwtPlotItem::Legend: false Parameters: title  Title Definition at line 51 of file qwt_plot_svgitem.cpp.

QwtPlotSvgItem::QwtPlotSvgItem (  const QwtText &  title  )  [explicit]

Constructor. Sets the following item attributes: QwtPlotItem::AutoScale: true QwtPlotItem::Legend: false Parameters: title  Title Definition at line 66 of file qwt_plot_svgitem.cpp.

QwtPlotSvgItem::~QwtPlotSvgItem (   )  [virtual]

Destructor. Definition at line 73 of file qwt_plot_svgitem.cpp.

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Member Function Documentation

QwtDoubleRect QwtPlotSvgItem::boundingRect (   )  const [virtual]

Bounding rect of the item. Reimplemented from QwtPlotItem. Definition at line 142 of file qwt_plot_svgitem.cpp. Referenced by draw(), and viewBox().

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

Draw the SVG item Parameters: painter  Painter xMap  X-Scale Map yMap  Y-Scale Map canvasRect  Contents rect of the plot canvas Implements QwtPlotItem. Definition at line 170 of file qwt_plot_svgitem.cpp. References boundingRect(), QwtPlotItem::invTransform(), render(), QwtPlotItem::transform(), and viewBox().

bool QwtPlotSvgItem::loadData (  const QwtDoubleRect &  rect, const QByteArray &  data )

Load SVG data Parameters: rect  Bounding rectangle data  in SVG format Returns: true, if the SVG data could be loaded Definition at line 123 of file qwt_plot_svgitem.cpp. References QwtPlotItem::itemChanged().

bool QwtPlotSvgItem::loadFile (  const QwtDoubleRect &  rect, const QString &  fileName )

Load a SVG file Parameters: rect  Bounding rectangle fileName  SVG file name Returns: true, if the SVG file could be loaded Definition at line 102 of file qwt_plot_svgitem.cpp. References QwtPlotItem::itemChanged().

void QwtPlotSvgItem::render (  QPainter *  painter, const QwtDoubleRect &  viewBox, const QRect &  rect )  const [protected]

Render the SVG data Parameters: painter  Painter viewBox  View Box, see QSvgRenderer::viewBox rect  Traget rectangle on the paint device Definition at line 194 of file qwt_plot_svgitem.cpp. Referenced by draw().

int QwtPlotSvgItem::rtti (   )  const [virtual]

Returns: QwtPlotItem::Rtti_PlotSVG Reimplemented from QwtPlotItem. Definition at line 89 of file qwt_plot_svgitem.cpp.

QwtDoubleRect QwtPlotSvgItem::viewBox (  const QwtDoubleRect &  rect  )  const [protected]

Calculate the viewBox from an rect and boundingRect(). Parameters: rect  Rectangle in scale coordinates Returns: viewBox View Box, see QSvgRenderer::viewBox Definition at line 254 of file qwt_plot_svgitem.cpp. References boundingRect(), QwtScaleMap::setPaintInterval(), QwtScaleMap::setScaleInterval(), and QwtScaleMap::xTransform(). Referenced by draw().

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