QwtPolarRenderer Class Reference

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

#include <qwt_polar_renderer.h>

Inheritance diagram for QwtPolarRenderer:

Classes
class	PrivateData

Public Member Functions
	QwtPolarRenderer (QObject *parent=nullptr)
	Constructor.
	~QwtPolarRenderer () override
	Destructor.
void	renderDocument (QwtPolarPlot *, const QString &format, const QSizeF &sizeMM, int resolution=85)
	Render a polar plot to a document.
void	renderDocument (QwtPolarPlot *, const QString &title, const QString &format, const QSizeF &sizeMM, int resolution=85)
	Render a polar plot to a document with title.
void	renderTo (QwtPolarPlot *, QPrinter &) const
	Render a polar plot to a printer.
void	renderTo (QwtPolarPlot *, QPaintDevice &) const
	Render a polar plot to a paint device.
virtual void	render (QwtPolarPlot *, QPainter *, const QRectF &rect) const
	Render a polar plot to a painter.
bool	exportTo (QwtPolarPlot *, const QString &documentName, const QSizeF &sizeMM=QSizeF(200, 200), int resolution=85)
	Export a polar plot to a document.
virtual void	renderTitle (QPainter *, const QRectF &) const
	Render the title.
virtual void	renderLegend (const QwtPolarPlot *, QPainter *, const QRectF &) const
	Render the legend.

Detailed Description

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

Constructor & Destructor Documentation

QwtPolarRenderer()

QwtPolarRenderer::QwtPolarRenderer ( QObject *  parent = nullptr )

explicit

Constructor.

Parameters

parent

Parent object

Destructor

Member Function Documentation

exportTo()

bool QwtPolarRenderer::exportTo	(	QwtPolarPlot *	plot,
		const QString &	documentName,
		const QSizeF &	sizeMM = QSizeF(200, 200),
		int	resolution = 85
	)

Export a polar plot to a document.

Execute a file dialog and render the plot to the selected file.

The document will be rendered in 85 dpi for a size 30x30 cm.

Parameters

plot	Plot widget
documentName	Default document name
sizeMM	Size for the document in millimeters
resolution	Resolution in dots per Inch (dpi)

Returns

True if export was successful, false otherwise

See also

renderDocument()

render()

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

virtual

Render a polar plot to a painter.

Render the plot to a given rectangle.

Renders the plot to the specified rectangle on the given painter.

Parameters

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

renderDocument() [1/2]

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

Render a polar plot to a document.

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)

renderDocument() [2/2]

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

Render a polar plot to a document with title.

Render a plot to a file with specified format.

Supported formats are: pdf, ps, svg, and all image formats supported by Qt.

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()

renderLegend()

void QwtPolarRenderer::renderLegend ( const QwtPolarPlot *  plot, QPainter *  painter, const QRectF &  rect  ) const

virtual

Render the legend.

Render the legend into a given rectangle.

Parameters

plot	Plot widget
painter	Painter
rect	Bounding rectangle

renderTitle()

void QwtPolarRenderer::renderTitle ( QPainter *  painter, const QRectF &  rect  ) const

virtual

Render the title.

Render the title into a given rectangle.

Parameters

painter	Painter
rect	Bounding rectangle

renderTo() [1/2]

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

Render a polar plot to a paint device.

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, e.g. a QImage

See also

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

renderTo() [2/2]

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

Render a polar plot to a printer.

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()

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The documentation for this class was generated from the following files:

• /home/runner/work/QWT/QWT/src/plot/qwt_polar_renderer.h
• /home/runner/work/QWT/QWT/src/plot/qwt_polar_renderer.cpp