QwtPolarLayout Class Reference

Layout class for QwtPolarPlot. More...

#include <qwt_polar_layout.h>

Public Types
enum	Option { IgnoreScrollbars = 0x01, IgnoreFrames = 0x02, IgnoreTitle = 0x04, IgnoreLegend = 0x08 }
	Options to configure the plot layout engine. More...
typedef QFlags< Option >	Options
	Options to configure the plot layout engine.

Public Member Functions
	QwtPolarLayout ()
	Constructor.
virtual	~QwtPolarLayout ()
	Destructor.
void	setLegendPosition (QwtPolarPlot::LegendPosition pos, double ratio)
	Specify the position of the legend. More...
void	setLegendPosition (QwtPolarPlot::LegendPosition pos)
	Specify the position of the legend. More...
QwtPolarPlot::LegendPosition	legendPosition () const
void	setLegendRatio (double ratio)
double	legendRatio () const
virtual void	activate (const QwtPolarPlot *, const QRectF &rect, Options options=0)
	Recalculate the geometry of all components. More...
virtual void	invalidate ()
const QRectF &	titleRect () const
const QRectF &	legendRect () const
const QRectF &	canvasRect () const

Protected Member Functions
QRectF	layoutLegend (Options options, QRectF &) const

Detailed Description

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 QwtPolarRnderer to render its content to a QPaintDevice like a QPrinter, QPixmap/QImage or QSvgRenderer.

Member Enumeration Documentation

enum QwtPolarLayout::Option

Options to configure the plot layout engine.

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

Member Function Documentation

void QwtPolarLayout::activate ( const QwtPolarPlot *  plot, const QRectF &  boundingRect, Options  options = 0  )

virtual

Recalculate the geometry of all components.

Parameters

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

See Also

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

const QRectF & QwtPolarLayout::canvasRect

(

)

const

Returns

Geometry for the canvas

See Also

activate(), invalidate()

void QwtPolarLayout::invalidate ( )

virtual

Invalidate the geometry of all components.

See Also

activate()

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

protected

Find the geometry for the legend

Parameters

options	Options how to layout the legend
rect	Rectangle where to place the legend

Returns

Geometry for the legend

QwtPolarPlot::LegendPosition QwtPolarLayout::legendPosition

(

)

const

Returns

Position of the legend

See Also

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

double QwtPolarLayout::legendRatio

(

)

const

Returns

The relative size of the legend in the plot.

See Also

setLegendPosition()

const QRectF & QwtPolarLayout::legendRect

(

)

const

Returns

Geometry for the legend

See Also

activate(), invalidate()

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

Specify the position of the legend.

Parameters

pos	The legend's position.
ratio	Ratio between legend and the bounding rect of title, canvas and axes. The legend will be shrinked 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.

See Also

QwtPolarPlot::setLegendPosition()

void QwtPolarLayout::setLegendPosition

(

QwtPolarPlot::LegendPosition

pos

)

Specify the position of the legend.

Parameters

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

See Also

QwtPolarPlot::setLegendPosition()

void QwtPolarLayout::setLegendRatio

(

double

ratio

)

Specify the relative size of the legend in the plot

Parameters

ratio

Ratio between legend and the bounding rect of title, canvas and axes. The legend will be shrinked 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.

const QRectF & QwtPolarLayout::titleRect

(

)

const

Returns

Geometry for the title

See Also

activate(), invalidate()