QwtPlotSvgItem (3)

#include <qwt_plot_svgitem.h>

Inherits QwtPlotItem.

Public Member Functions

QwtPlotSvgItem (const QString &title=QString::null)

QwtPlotSvgItem (const QwtText &title)

virtual ~QwtPlotSvgItem ()

virtual QwtDoubleRect boundingRect () const

virtual void draw (QPainter *p, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRect &rect) const

bool loadData (const QwtDoubleRect &, const QByteArray &)

bool loadFile (const QwtDoubleRect &, const QString &fileName)

virtual int rtti () const

Protected Member Functions

void render (QPainter *painter, const QwtDoubleRect &viewBox, const QRect &rect) const

QwtDoubleRect viewBox (const QwtDoubleRect &area) const

Additional Inherited Members

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

SVG images are often used to display maps

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

Constructor. Sets the following item attributes:

• QwtPlotItem::AutoScale: true

• QwtPlotItem::Legend: false

Parameters:

title Title

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

Constructor. Sets the following item attributes:

• QwtPlotItem::AutoScale: true

• QwtPlotItem::Legend: false

Parameters:

title Title

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

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\fC [protected]\fP

Render the SVG data

Parameters:

painter Painter

viewBox View Box, see QSvgRenderer::viewBox

rect Traget rectangle on the paint device

int QwtPlotSvgItem::rtti () const\fC [virtual]\fP

Returns:

QwtPlotItem::Rtti_PlotSVG

Reimplemented from QwtPlotItem.

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

Calculate the viewBox from an rect and boundingRect().

Parameters:

rect Rectangle in scale coordinates

Returns:

viewBox View Box, see QSvgRenderer::viewBox

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