A class for drawing scales. More...

#include <qwt_scale_draw.h>

Inheritance diagram for QwtScaleDraw:

Classes
class	PrivateData

Public Types
enum	Alignment { BottomScale , TopScale , LeftScale , RightScale }
	Alignment of the scale draw. More...

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

Public Member Functions
	QwtScaleDraw ()
	Constructor.

virtual	~QwtScaleDraw ()
	Destructor.

void	getBorderDistHint (const QFont &, int &start, int &end) const
	Get the border distance hint.

int	minLabelDist (const QFont &) const
	Get the minimum label distance.

int	minLength (const QFont &) const
	Get the minimum length.

virtual double	extent (const QFont &) const override
	Calculate the width/height that is needed for a vertical/horizontal scale.

void	move (double x, double y)
	Move the position of the scale.

void	move (const QPointF &)
	Move the position of the scale.

void	setLength (double length)
	Set the length of the backbone.

Alignment	alignment () const
	Return alignment of the scale.

void	setAlignment (Alignment)
	Set the alignment.

Qt::Orientation	orientation () const
	Return the orientation.

QPointF	pos () const
	Get origin of the scale.

double	length () const
	Get the length of the backbone.

void	setLabelAlignment (Qt::Alignment)
	Set the label alignment.

Qt::Alignment	labelAlignment () const
	Get the label flags.

void	setLabelRotation (double rotation)
	Set the label rotation.

double	labelRotation () const
	Get the label rotation.

int	maxLabelHeight (const QFont &) const
	Get the maximum label height.

int	maxLabelWidth (const QFont &) const
	Get the maximum label width.

QPointF	labelPosition (double value) const
	Get the label position for a value.

QRectF	labelRect (const QFont &, double value) const
	Get the label rectangle for a value.

QSizeF	labelSize (const QFont &, double value) const
	Get the label size for a value.

QRect	boundingLabelRect (const QFont &, double value) const
	Get the bounding label rectangle.

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
QTransform	labelTransformation (const QPointF &, const QSizeF &) const
	Calculate the transformation that is needed to paint a label.

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.

Detailed Description

A class for drawing scales.

Member Enumeration Documentation

◆ Alignment

enum QwtScaleDraw::Alignment

Alignment of the scale draw.

Enumerator
BottomScale	The scale is below.
TopScale	The scale is above.
LeftScale	The scale is left.
RightScale	The scale is right.

Constructor & Destructor Documentation

◆ QwtScaleDraw()

QwtScaleDraw::QwtScaleDraw ( )

Constructor.

Member Function Documentation

◆ alignment()

QwtScaleDraw::Alignment QwtScaleDraw::alignment ( ) const

Return alignment of the scale.

Returns: the alignment

◆ boundingLabelRect()

QRect QwtScaleDraw::boundingLabelRect	(	const QFont &	font,
		double	value
	)		const

Get the bounding label rectangle.

Find the bounding rectangle for the label.

◆ drawBackbone()

void QwtScaleDraw::drawBackbone ( QPainter * painter ) const

overrideprotectedvirtual

Draws the baseline of the scale.

Implements QwtAbstractScaleDraw.

◆ drawLabel()

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

overrideprotectedvirtual

Draws the label for a major scale tick.

Implements QwtAbstractScaleDraw.

◆ drawTick()

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

overrideprotectedvirtual

Draw a tick.

Implements QwtAbstractScaleDraw.

◆ extent()

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

overridevirtual

Calculate the width/height that is needed for a vertical/horizontal scale.

Implements QwtAbstractScaleDraw.

◆ getBorderDistHint()

void QwtScaleDraw::getBorderDistHint	(	const QFont &	font,
		int &	start,
		int &	end
	)		const

Get the border distance hint.

Determine the minimum border distance.

◆ labelAlignment()

Qt::Alignment QwtScaleDraw::labelAlignment ( ) const

Get the label flags.

Returns: the label alignment

◆ labelPosition()

QPointF QwtScaleDraw::labelPosition ( double value ) const

Get the label position for a value.

Find the position, where to paint a label.

◆ labelRect()

QRectF QwtScaleDraw::labelRect	(	const QFont &	font,
		double	value
	)		const

Get the label rectangle for a value.

Find the bounding rectangle for the label.

◆ labelRotation()

double QwtScaleDraw::labelRotation ( ) const

Get the label rotation.

Returns: the label rotation

◆ labelSize()

QSizeF QwtScaleDraw::labelSize	(	const QFont &	font,
		double	value
	)		const

Get the label size for a value.

Calculate the size that is needed to draw a label.

◆ labelTransformation()

QTransform QwtScaleDraw::labelTransformation	(	const QPointF &	pos,
		const QSizeF &	size
	)		const

protected

Calculate the transformation that is needed to paint a label.

◆ length()

double QwtScaleDraw::length ( ) const

Get the length of the backbone.

Returns: the length

◆ maxLabelHeight()

int QwtScaleDraw::maxLabelHeight ( const QFont & font ) const

Get the maximum label height.

Get the maximum height of a label.

◆ maxLabelWidth()

int QwtScaleDraw::maxLabelWidth ( const QFont & font ) const

Get the maximum label width.

Get the maximum width of a label.

◆ minLabelDist()

int QwtScaleDraw::minLabelDist ( const QFont & font ) const

Get the minimum label distance.

Determine the minimum distance between two labels.

◆ minLength()

int QwtScaleDraw::minLength ( const QFont & font ) const

Get the minimum length.

Calculate the minimum length that is needed to draw the scale.

◆ move() [1/2]

void QwtScaleDraw::move ( const QPointF & pos )

Move the position of the scale.

◆ move() [2/2]

void QwtScaleDraw::move	(	double	x,
		double	y
	)

inline

Move the position of the scale.

◆ orientation()

Qt::Orientation QwtScaleDraw::orientation ( ) const

Return the orientation.

Returns: the orientation

◆ pos()

QPointF QwtScaleDraw::pos ( ) const

Get origin of the scale.

Returns: the position

◆ setAlignment()

void QwtScaleDraw::setAlignment ( Alignment align )

Set the alignment.

Set the alignment of the scale.

◆ setLabelAlignment()

void QwtScaleDraw::setLabelAlignment ( Qt::Alignment alignment )

Set the label alignment.

Change the label flags.

◆ setLabelRotation()

void QwtScaleDraw::setLabelRotation ( double rotation )

Set the label rotation.

Rotate all labels.

◆ setLength()

void QwtScaleDraw::setLength ( double length )

Set the length of the backbone.

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

/home/runner/work/QWT/QWT/src/plot/qwt_scale_draw.h
/home/runner/work/QWT/QWT/src/plot/qwt_scale_draw.cpp

Classes

Public Types

Public Member Functions

Protected Member Functions

Detailed Description

Member Enumeration Documentation

◆ Alignment

Constructor & Destructor Documentation

◆ QwtScaleDraw()

Member Function Documentation

◆ alignment()

◆ boundingLabelRect()

◆ drawBackbone()

◆ drawLabel()

◆ drawTick()

◆ extent()

◆ getBorderDistHint()

◆ labelAlignment()

◆ labelPosition()

◆ labelRect()

◆ labelRotation()

◆ labelSize()

◆ labelTransformation()

◆ length()

◆ maxLabelHeight()

◆ maxLabelWidth()

◆ minLabelDist()

◆ minLength()

◆ move() [1/2]

◆ move() [2/2]

◆ orientation()

◆ pos()

◆ setAlignment()

◆ setLabelAlignment()

◆ setLabelRotation()

◆ setLength()