QwtRoundScaleDraw Class Reference

A class for drawing round scales. More...

#include <qwt_round_scale_draw.h>

Inheritance diagram for QwtRoundScaleDraw:

Classes
class	PrivateData

Public Member Functions
	QwtRoundScaleDraw ()
	Constructor.
virtual	~QwtRoundScaleDraw ()
	Destructor.
void	setRadius (double radius)
	Set the radius.
double	radius () const
	Get the radius.
void	moveCenter (double x, double y)
	Move the center.
void	moveCenter (const QPointF &)
	Move the center.
QPointF	center () const
	Get the center of the scale.
void	setAngleRange (double angle1, double angle2)
	Set the angle range.
virtual double	extent (const QFont &) const override
	Calculate the extent of the scale.
Public Member Functions inherited from QwtAbstractScaleDraw
	QwtAbstractScaleDraw ()
	Constructor for QwtAbstractScaleDraw.
virtual	~QwtAbstractScaleDraw ()
	Destructor for QwtAbstractScaleDraw .
void	setScaleDiv (const QwtScaleDiv &)
	Set the scale division.
const QwtScaleDiv &	scaleDiv () const
	Return the scale division.
void	setTransformation (QwtTransform *)
	Set the scale transformation.
const QwtScaleMap &	scaleMap () const
	Return the scale map (const version)
QwtScaleMap &	scaleMap ()
	Return the scale map (non-const version)
void	enableComponent (ScaleComponent, bool enable=true)
	Enable or disable a scale component.
bool	hasComponent (ScaleComponent) const
	Check if a component is enabled.
void	setTickLength (QwtScaleDiv::TickType, double length)
	Set the length of the ticks.
double	tickLength (QwtScaleDiv::TickType) const
	Get the length of the ticks.
double	maxTickLength () const
	Get the length of the longest tick.
void	setSpacing (double)
	Set the spacing between tick and labels.
double	spacing () const
	Get the spacing.
void	setPenWidthF (qreal width)
	Specify the width of the scale pen.
qreal	penWidthF () const
	Get the scale pen width.
void	setSelected (bool on)
	Set whether the scale draw is selected.
bool	isSelected () const
	Check if the scale draw is selected.
void	setSelectedPenWidthOffset (qreal offset=1)
	Set the pen width offset for the axis when it is in selected state.
qreal	selectedPenWidthOffset () const
	Get the current pen width offset for the axis when it is in selected state.
virtual void	draw (QPainter *, const QPalette &) const
	Draw the scale.
virtual QwtText	label (double) const
	Convert a value into its representing label.
void	setMinimumExtent (double)
	Set a minimum for the extent.
double	minimumExtent () const
	Get the minimum extent.
void	invalidateCache ()
	Invalidate the cache used by tickLabel()

Protected Member Functions
virtual void	drawTick (QPainter *, double value, double len) const override
	Draw a tick.
virtual void	drawBackbone (QPainter *) const override
	Draws the baseline of the scale.
virtual void	drawLabel (QPainter *, double value) const override
	Draws the label for a major scale tick.
Protected Member Functions inherited from QwtAbstractScaleDraw
const QwtText &	tickLabel (const QFont &, double value) const
	Convert a value into its representing label and cache it.

Additional Inherited Members
Public Types inherited from QwtAbstractScaleDraw
enum	ScaleComponent { Backbone = 0x01 , Ticks = 0x02 , Labels = 0x04 }
	Components of a scale. More...

Detailed Description

A class for drawing round scales.

Constructor & Destructor Documentation

QwtRoundScaleDraw()

QwtRoundScaleDraw::QwtRoundScaleDraw

(

)

Constructor.

Member Function Documentation

center()

QPointF QwtRoundScaleDraw::center

(

)

const

Get the center of the scale.

Returns

the center

drawBackbone()

void QwtRoundScaleDraw::drawBackbone ( QPainter *  painter ) const

overrideprotectedvirtual

Draws the baseline of the scale.

Implements QwtAbstractScaleDraw.

drawLabel()

void QwtRoundScaleDraw::drawLabel ( QPainter *  painter, double  value  ) const

overrideprotectedvirtual

Draws the label for a major scale tick.

Implements QwtAbstractScaleDraw.

drawTick()

void QwtRoundScaleDraw::drawTick ( QPainter *  painter, double  value, double  len  ) const

overrideprotectedvirtual

Draw a tick.

Implements QwtAbstractScaleDraw.

extent()

double QwtRoundScaleDraw::extent ( const QFont &  font ) const

overridevirtual

Calculate the extent of the scale.

Implements QwtAbstractScaleDraw.

moveCenter() [1/2]

void QwtRoundScaleDraw::moveCenter

(

const QPointF &

center

)

Move the center.

Move the center of the scale draw, leaving the radius unchanged.

moveCenter() [2/2]

void QwtRoundScaleDraw::moveCenter ( double  x, double  y  )

inline

Move the center.

Move the center of the scale draw, leaving the radius unchanged.

radius()

double QwtRoundScaleDraw::radius

(

)

const

Get the radius.

Returns

the radius

setAngleRange()

void QwtRoundScaleDraw::setAngleRange	(	double	angle1,
		double	angle2
	)

Set the angle range.

Adjust the baseline circle segment for round scales.

setRadius()

void QwtRoundScaleDraw::setRadius

(

double

radius

)

Set the radius.

Change the radius of the scale.

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

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