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

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

#include <qwt_plot_svgitem.h>

Inherits QwtPlotItem.


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


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

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

SVG images are often used to display maps

Constructor. Sets the following item attributes:

  • QwtPlotItem::AutoScale: true
  • QwtPlotItem::Legend: false

Parameters:

title Title

Constructor. Sets the following item attributes:

  • QwtPlotItem::AutoScale: true
  • QwtPlotItem::Legend: false

Parameters:

title Title

Draw the SVG item

Parameters:

painter Painter
xMap X-Scale Map
yMap Y-Scale Map
canvasRect Contents rect of the plot canvas

Implements QwtPlotItem.

Load SVG data

Parameters:

rect Bounding rectangle
data in SVG format

Returns:

true, if the SVG data could be loaded

Load a SVG file

Parameters:

rect Bounding rectangle
fileName SVG file name

Returns:

true, if the SVG file could be loaded

Render the SVG data

Parameters:

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

Returns:

Renderer used to render the SVG data

Returns:

Renderer used to render the SVG data

Returns:

QwtPlotItem::Rtti_PlotSVG

Reimplemented from QwtPlotItem.

Calculate the view box from rect and boundingRect().

Parameters:

rect Rectangle in scale coordinates

Returns:

View box, see QSvgRenderer::viewBox()

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Wed Jan 2 2019 Version 6.1.4