QwtPlotSvgItem

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())
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 *, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect) const
virtual int rtti () const

Protected Member Functions

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

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