qwtplotsvgitem(3)
NAME
QwtPlotSvgItem
SYNOPSIS
Inherits QwtPlotItem.
Detailed Description
A plot item, which displays data in Scalable Vector Graphics (SVG)
format.
SVG images are often used to display maps
- Definition at line 31 of file qwt_plot_svgitem.h.
- Public Member Functions
- QwtPlotSvgItem (const QString &title=QString::null)
QwtPlotSvgItem (const QwtText &title)
virtual ~QwtPlotSvgItem ()
bool loadFile (const QwtDoubleRect &, const QString &fileName) bool loadData (const QwtDoubleRect &, const QByteArray &) virtual QwtDoubleRect boundingRect () const virtual void draw (QPainter *p, const QwtScaleMap &xMap, constQwtScaleMap &yMap, const QRect &rect) const - virtual int rtti () const
- Protected Member Functions
- void render (QPainter *painter, const QwtDoubleRect &viewBox, const
QRect &rect) const
- QwtDoubleRect viewBox (const QwtDoubleRect &area) const
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
- Definition at line 51 of file qwt_plot_svgitem.cpp.
- QwtPlotSvgItem::QwtPlotSvgItem (const QwtText & title) [explicit]
- Constructor.
- Sets the following item attributes:
- · QwtPlotItem::AutoScale: true
- · QwtPlotItem::Legend: false
- Parameters:
title Title
- Definition at line 66 of file qwt_plot_svgitem.cpp.
- QwtPlotSvgItem::~QwtPlotSvgItem () [virtual]
- Destructor.
- Definition at line 73 of file qwt_plot_svgitem.cpp.
Member Function Documentation
- 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
- Definition at line 102 of file qwt_plot_svgitem.cpp.
- References QwtPlotItem::itemChanged().
- 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
- Definition at line 123 of file qwt_plot_svgitem.cpp.
- References QwtPlotItem::itemChanged().
- QwtDoubleRect QwtPlotSvgItem::boundingRect () const [virtual]
- Bounding rect of the item.
- Reimplemented from QwtPlotItem.
- Definition at line 142 of file qwt_plot_svgitem.cpp.
- Referenced by draw(), and viewBox().
- void QwtPlotSvgItem::draw (QPainter * painter, const QwtScaleMap & xMap,
- const QwtScaleMap & yMap, const QRect & 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.
- Definition at line 170 of file qwt_plot_svgitem.cpp.
- References boundingRect(), QwtPlotItem::invTransform(), render(),
QwtPlotItem::transform(), and viewBox(). - int QwtPlotSvgItem::rtti () const [virtual]
- Returns:
QwtPlotItem::Rtti_PlotSVG
- Reimplemented from QwtPlotItem.
- Definition at line 89 of file qwt_plot_svgitem.cpp.
- void QwtPlotSvgItem::render (QPainter * painter, const QwtDoubleRect &
- viewBox, const QRect & rect) const [protected] Render the SVG data
- Parameters:
painter Painter
viewBox View Box, see QSvgRenderer::viewBox
rect Traget rectangle on the paint device - Definition at line 194 of file qwt_plot_svgitem.cpp.
- Referenced by draw().
- QwtDoubleRect QwtPlotSvgItem::viewBox (const QwtDoubleRect & rect) const
- [protected]
Calculate the viewBox from an rect and boundingRect(). - Parameters:
rect Rectangle in scale coordinates
- Returns:
viewBox View Box, see QSvgRenderer::viewBox
- Definition at line 254 of file qwt_plot_svgitem.cpp.
- References boundingRect(), QwtScaleMap::setPaintInterval(),
QwtScaleMap::setScaleInterval(), and QwtScaleMap::xTransform(). - Referenced by draw().
Author
- Generated automatically by Doxygen for Qwt User's Guide from the source
code.