Qwt User's Guide: QwtPlotSvgItem Class Reference

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QwtPlotSvgItem Class Reference

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

#include <qwt_plot_svgitem.h>

Inheritance diagram for QwtPlotSvgItem:
[legend]

List of all members.

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

Detailed Description

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

SVG images are often used to display maps

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

Constructor.

Sets the following item attributes:

  • QwtPlotItem::AutoScale: true
  • QwtPlotItem::Legend: false
Parameters:
title Title
QwtPlotSvgItem::~QwtPlotSvgItem (  )  [virtual]

Destructor.

Member Function Documentation

QwtDoubleRect QwtPlotSvgItem::boundingRect (  )  const [virtual]

Bounding rect of the item.

Reimplemented from QwtPlotItem.

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.

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
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
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
int QwtPlotSvgItem::rtti (  )  const [virtual]
Returns:
QwtPlotItem::Rtti_PlotSVG

Reimplemented from QwtPlotItem.

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
Generated on Wed Sep 2 18:37:26 2009 for Qwt User's Guide by  doxygen 1.6.1
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