QwtPolarRenderer Class Reference

#include <qwt_polar_renderer.h>

List of all members.

Public Member Functions
	QwtPolarRenderer (QObject *parent=NULL)
virtual	~QwtPolarRenderer ()
void	renderDocument (QwtPolarPlot *, const QString &format, const QSizeF &sizeMM, int resolution=85)
void	renderDocument (QwtPolarPlot *, const QString &title, const QString &format, const QSizeF &sizeMM, int resolution=85)
void	renderTo (QwtPolarPlot *, QPrinter &) const
void	renderTo (QwtPolarPlot *, QPaintDevice &p) const
virtual void	render (QwtPolarPlot *, QPainter *, const QRectF &rect) const
Protected Member Functions
virtual void	renderTitle (QPainter *, const QRectF &) const
virtual void	renderLegend (QPainter *, const QRectF &) const
virtual void	renderLegendItem (QPainter *, const QWidget *, const QRectF &) const

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Detailed Description

Renderer for exporting a polar plot to a document, a printer or anything else, that is supported by QPainter/QPaintDevice.

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Constructor & Destructor Documentation

QwtPolarRenderer::QwtPolarRenderer

(

QObject *

parent = NULL

)

[explicit]

Constructor

Parameters:

parent

Parent object

QwtPolarRenderer::~QwtPolarRenderer

(

)

[virtual]

Destructor.

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Member Function Documentation

void QwtPolarRenderer::render	(	QwtPolarPlot *	plot,
		QPainter *	painter,
		const QRectF &	plotRect
	)		const [virtual]

Render the plot to a given rectangle ( f.e QPrinter, QSvgRenderer )

Parameters:

plot	Plot widget to be rendered
painter	Painter
plotRect	Bounding rectangle for the plot

void QwtPolarRenderer::renderDocument	(	QwtPolarPlot *	plot,
		const QString &	fileName,
		const QSizeF &	sizeMM,
		int	resolution = 85
	)

Render a polar plot to a file

The format of the document will be autodetected from the suffix of the filename.

Parameters:

plot	Plot widget
fileName	Path of the file, where the document will be stored
sizeMM	Size for the document in millimeters.
resolution	Resolution in dots per Inch (dpi)

void QwtPolarRenderer::renderDocument	(	QwtPolarPlot *	plot,
		const QString &	fileName,
		const QString &	format,
		const QSizeF &	sizeMM,
		int	resolution = 85
	)

Render a plot to a file

Supported formats are:

• pdf
  
• ps
  
• svg
  
• all image formats supported by Qt, see QImageWriter::supportedImageFormats()

Parameters:

plot	Plot widget
fileName	Path of the file, where the document will be stored
format	Format for the document
sizeMM	Size for the document in millimeters.
resolution	Resolution in dots per Inch (dpi)

See also:

renderTo(), render(), QwtPainter::setRoundingAlignment()

void QwtPolarRenderer::renderLegend	(	QPainter *	painter,
		const QRectF &	rect
	)		const [protected, virtual]

Render the legend into a given rectangle.

Parameters:

painter	Painter
rect	Bounding rectangle

void QwtPolarRenderer::renderLegendItem	(	QPainter *	painter,
		const QWidget *	widget,
		const QRectF &	rect
	)		const [protected, virtual]

Print the legend item into a given rectangle.

Parameters:

painter	Painter
widget	Widget representing a legend item
rect	Bounding rectangle

Note:

When widget is not derived from QwtLegendItem renderLegendItem does nothing and needs to be overloaded

void QwtPolarRenderer::renderTitle	(	QPainter *	painter,
		const QRectF &	rect
	)		const [protected, virtual]

Render the title into a given rectangle.

Parameters:

painter	Painter
rect	Bounding rectangle

void QwtPolarRenderer::renderTo	(	QwtPolarPlot *	plot,
		QPrinter &	printer
	)		const

Render the plot to a QPrinter.

This function renders the contents of a QwtPolarPlot instance to QPaintDevice object. The size is derived from the printer metrics.

Parameters:

plot	Plot to be rendered
printer	Printer to paint on

See also:

renderDocument(), render(), QwtPainter::setRoundingAlignment()

void QwtPolarRenderer::renderTo	(	QwtPolarPlot *	plot,
		QPaintDevice &	paintDevice
	)		const

Render the plot to a QPaintDevice.

This function renders the contents of a QwtPolarPlot instance to QPaintDevice object. The target rectangle is derived from its device metrics.

Parameters:

plot	Plot to be rendered
paintDevice	device to paint on, f.e a QImage

See also:

renderDocument(), render(), QwtPainter::setRoundingAlignment()