---
name: "QwtPlotSvgItem"
section: "3"
platform: "linux"
package: "libqwt-doc"
version: "6.1.4-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/QwtPlotSvgItem"
---

# QwtPlotSvgItem(3)

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

## 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

Generated automatically by Doxygen for Qwt User's Guide from the source code.