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QwtPlotSvgItem(3) Qwt User's Guide QwtPlotSvgItem(3)

NAME

QwtPlotSvgItem -

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

SYNOPSIS

#include <qwt_plot_svgitem.h>

Inherits QwtPlotItem.

Public Member Functions


QwtPlotSvgItem (const QString &title=QString::null)
Constructor. QwtPlotSvgItem (const QwtText &title)
Constructor. virtual ~QwtPlotSvgItem ()
Destructor. bool loadFile (const QRectF &, const QString &fileName)
bool loadData (const QRectF &, const QByteArray &)
virtual QRectF boundingRect () const
Bounding rectangle of the item. virtual void draw (QPainter *p, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &rect) const
virtual int rtti () const

Protected Member Functions


const QSvgRenderer & renderer () const
QSvgRenderer & renderer ()
void render (QPainter *painter, const QRectF &viewBox, const QRectF &rect) const
QRectF viewBox (const QRectF &area) const

Additional Inherited Members

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

Member Function Documentation

void QwtPlotSvgItem::draw (QPainter *painter, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &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 QRectF &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 QRectF &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 QRectF &viewBox, const QRectF &rect) const [protected]

Render the SVG data

Parameters:

painter Painter
viewBox View Box, see QSvgRenderer::viewBox()
rect Target rectangle on the paint device

const QSvgRenderer & QwtPlotSvgItem::renderer () const [protected]

Returns:
Renderer used to render the SVG data

QSvgRenderer & QwtPlotSvgItem::renderer () [protected]

Returns:
Renderer used to render the SVG data

int QwtPlotSvgItem::rtti () const [virtual]

Returns:
QwtPlotItem::Rtti_PlotSVG

Reimplemented from QwtPlotItem.

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

Calculate the view box from rect and boundingRect().

Parameters:

rect Rectangle in scale coordinates

Returns:

View box, see QSvgRenderer::viewBox()

Author

Generated automatically by Doxygen for Qwt User's Guide from the source code.
Thu Dec 11 2014 Version 6.1.2