QwtPolarRenderer类 参考

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

#include <qwt_polar_renderer.h>

类 QwtPolarRenderer 继承关系图:

类
class	PrivateData

Public 成员函数
	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

详细描述

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

构造及析构函数说明

QwtPolarRenderer()

QwtPolarRenderer::QwtPolarRenderer ( QObject *  parent = nullptr )

explicit

Constructor

参数

parent

Parent object

Destructor

成员函数说明

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.

参数

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

返回

True if export was successful, false otherwise

参见

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.

参数

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.

参数

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.

参数

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)

参见

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

参数

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

参数

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.

参数

plot	Plot to be rendered
paintDevice	Device to paint on, e.g. a QImage

参见

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.

参数

plot	Plot to be rendered
printer	Printer to paint on

参见

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

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该类的文档由以下文件生成:

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