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QwtPlotSvgItem
Langue: en
Version: 121662 (mandriva - 01/05/08)
Section: 3 (Bibliothèques de fonctions)
Sommaire
- NAME
- SYNOPSIS
- Detailed Description
- Constructor & Destructor Documentation
- Member Function Documentation
- QwtDoubleRect QwtPlotSvgItem::boundingRect () const [virtual]
- void QwtPlotSvgItem::draw (QPainter * painter, const QwtScaleMap & xMap, const QwtScaleMap & yMap, const QRect & canvasRect) const [virtual]
- bool QwtPlotSvgItem::loadData (const QwtDoubleRect & rect, const QByteArray & data)
- bool QwtPlotSvgItem::loadFile (const QwtDoubleRect & rect, const QString & fileName)
- void QwtPlotSvgItem::render (QPainter * painter, const QwtDoubleRect & viewBox, const QRect & rect) const [protected]
- int QwtPlotSvgItem::rtti () const [virtual]
- QwtDoubleRect QwtPlotSvgItem::viewBox (const QwtDoubleRect & rect) const [protected]
- Author
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, const QwtScaleMap &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
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().
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().
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().
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().
int QwtPlotSvgItem::rtti () const [virtual]
Returns:
- QwtPlotItem::Rtti_PlotSVG
Reimplemented from QwtPlotItem.
Definition at line 89 of file qwt_plot_svgitem.cpp.
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
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