QwtPolarLayout类 参考

Layout class for QwtPolarPlot 更多...

#include <qwt_polar_layout.h>

类
class	LayoutData
class	PrivateData

Public 类型
enum	Option { IgnoreScrollbars = 0x01 , IgnoreFrames = 0x02 , IgnoreTitle = 0x04 , IgnoreLegend = 0x08 }
	Options to configure the plot layout engine 更多...

Public 成员函数
	QwtPolarLayout ()
	Constructor
virtual	~QwtPolarLayout ()
	Destructor
void	setLegendPosition (QwtPolarPlot::LegendPosition pos, double ratio)
	Set the legend position with ratio
void	setLegendPosition (QwtPolarPlot::LegendPosition pos)
	Set the legend position
QwtPolarPlot::LegendPosition	legendPosition () const
	Get the legend position
void	setLegendRatio (double ratio)
	Set the legend ratio
double	legendRatio () const
	Get the legend ratio
virtual void	activate (const QwtPolarPlot *, const QRectF &rect, Options options=Options())
	Activate the layout
virtual void	invalidate ()
	Invalidate the layout
const QRectF &	titleRect () const
	Get the title rectangle
const QRectF &	legendRect () const
	Get the legend rectangle
const QRectF &	canvasRect () const
	Get the canvas rectangle

Protected 成员函数
QRectF	layoutLegend (Options options, QRectF &) const
	Find the geometry for the legend

详细描述

Layout class for QwtPolarPlot

Organizes the geometry for the different QwtPolarPlot components. It is used by the QwtPolar widget to organize its internal widgets or by QwtPolarRenderer to render its content to a QPaintDevice like a QPrinter, QPixmap/QImage or QSvgRenderer.

成员枚举类型说明

Option

enum QwtPolarLayout::Option

Options to configure the plot layout engine

枚举值
IgnoreScrollbars	Ignore the dimension of the scrollbars.
IgnoreFrames	Ignore all frames.
IgnoreTitle	Ignore the title.
IgnoreLegend	Ignore the legend.

构造及析构函数说明

QwtPolarLayout()

QwtPolarLayout::QwtPolarLayout ( )

explicit

Constructor

Destructor

成员函数说明

activate()

void QwtPolarLayout::activate ( const QwtPolarPlot *  plot, const QRectF &  boundingRect, Options  options = Options()  )

virtual

Activate the layout

Recalculate the geometry of all components

参数

plot	Plot to be layout
boundingRect	Rect where to place the components
options	Options

参见

invalidate(), titleRect(), legendRect(), canvasRect()

canvasRect()

const QRectF & QwtPolarLayout::canvasRect

(

)

const

Get the canvas rectangle

Get geometry for the canvas

返回

Geometry for the canvas

参见

activate(), invalidate()

invalidate()

void QwtPolarLayout::invalidate ( )

virtual

Invalidate the layout

Invalidate the geometry of all components

参见

activate()

layoutLegend()

QRectF QwtPolarLayout::layoutLegend ( Options  options, QRectF &  rect  ) const

protected

Find the geometry for the legend

参数

	options	Options how to layout the legend
[in,out]	rect	Rectangle where to place the legend

返回

Geometry for the legend

legendPosition()

QwtPolarPlot::LegendPosition QwtPolarLayout::legendPosition

(

)

const

Get the legend position

Get the position of the legend

返回

Position of the legend

参见

setLegendPosition(), QwtPolarPlot::setLegendPosition(), QwtPolarPlot::legendPosition()

legendRatio()

double QwtPolarLayout::legendRatio

(

)

const

Get the legend ratio

Get the relative size of the legend in the plot

返回

The relative size of the legend in the plot

参见

setLegendPosition()

legendRect()

const QRectF & QwtPolarLayout::legendRect

(

)

const

Get the legend rectangle

Get geometry for the legend

返回

Geometry for the legend

参见

activate(), invalidate()

setLegendPosition() [1/2]

void QwtPolarLayout::setLegendPosition

(

QwtPolarPlot::LegendPosition

pos

)

Set the legend position

Specify the position of the legend

参数

pos	The legend's position. Valid values are QwtPolarPlot::LeftLegend, QwtPolarPlot::RightLegend, QwtPolarPlot::TopLegend, QwtPolarPlot::BottomLegend.

参见

QwtPolarPlot::setLegendPosition()

setLegendPosition() [2/2]

void QwtPolarLayout::setLegendPosition	(	QwtPolarPlot::LegendPosition	pos,
		double	ratio
	)

Set the legend position with ratio

Specify the position of the legend

参数

pos	The legend's position
ratio	Ratio between legend and the bounding rect of title, canvas and axes. The legend will be shrunk if it would need more space than the given ratio. The ratio is limited to ]0.0 .. 1.0]. In case of <= 0.0 it will be reset to the default ratio. The default vertical/horizontal ratio is 0.33/0.5.

参见

QwtPolarPlot::setLegendPosition()

setLegendRatio()

void QwtPolarLayout::setLegendRatio

(

double

ratio

)

Set the legend ratio

Specify the relative size of the legend in the plot

参数

ratio

Ratio between legend and the bounding rect of title, canvas and axes. The legend will be shrunk if it would need more space than the given ratio. The ratio is limited to ]0.0 .. 1.0]. In case of <= 0.0 it will be reset to the default ratio. The default vertical/horizontal ratio is 0.33/0.5.

参见

setLegendPosition()

titleRect()

const QRectF & QwtPolarLayout::titleRect

(

)

const

Get the title rectangle

Get geometry for the title

返回

Geometry for the title

参见

activate(), invalidate()

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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_layout.h
• /home/runner/work/QWT/QWT/src/plot/qwt_polar_layout.cpp