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

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

Definition at line 23 of file qwt_polar_layout.h.

Member Typedef Documentation

Options

typedef QFlags<Option > QwtPolarLayout::Options

An ORed combination of Option values.

Definition at line 43 of file qwt_polar_layout.h.

Member Enumeration Documentation

Option

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.

Definition at line 28 of file qwt_polar_layout.h.

Constructor & Destructor Documentation

QwtPolarLayout()

QwtPolarLayout::QwtPolarLayout ( )

explicit

Constructor.

Definition at line 114 of file qwt_polar_layout.cpp.

~QwtPolarLayout()

QwtPolarLayout::~QwtPolarLayout ( )

virtual

Destructor.

Definition at line 123 of file qwt_polar_layout.cpp.

Member Function Documentation

activate()

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

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()

Definition at line 344 of file qwt_polar_layout.cpp.

canvasRect()

const QRectF & QwtPolarLayout::canvasRect

(

)

const

Returns

Geometry for the canvas

See also

activate(), invalidate()

Definition at line 248 of file qwt_polar_layout.cpp.

invalidate()

void QwtPolarLayout::invalidate ( )

virtual

Invalidate the geometry of all components.

See also

activate()

Definition at line 257 of file qwt_polar_layout.cpp.

layoutLegend()

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

Definition at line 269 of file qwt_polar_layout.cpp.

legendPosition()

QwtPolarPlot::LegendPosition QwtPolarLayout::legendPosition

(

)

const

Returns

Position of the legend

See also

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

Definition at line 196 of file qwt_polar_layout.cpp.

legendRatio()

double QwtPolarLayout::legendRatio

(

)

const

Returns

The relative size of the legend in the plot.

See also

setLegendPosition()

Definition at line 219 of file qwt_polar_layout.cpp.

legendRect()

const QRectF & QwtPolarLayout::legendRect

(

)

const

Returns

Geometry for the legend

See also

activate(), invalidate()

Definition at line 239 of file qwt_polar_layout.cpp.

setLegendPosition() [1/2]

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()

Definition at line 186 of file qwt_polar_layout.cpp.

setLegendPosition() [2/2]

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 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.

See also

QwtPolarPlot::setLegendPosition()

Definition at line 141 of file qwt_polar_layout.cpp.

setLegendRatio()

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 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.

Definition at line 210 of file qwt_polar_layout.cpp.

titleRect()

const QRectF & QwtPolarLayout::titleRect

(

)

const

Returns

Geometry for the title

See also

activate(), invalidate()

Definition at line 229 of file qwt_polar_layout.cpp.