QwtPlotScaleItem Class Reference

A class which draws a scale inside the plot canvas. More...

#include <qwt_plot_scaleitem.h>

Inheritance diagram for QwtPlotScaleItem:

Classes
class	PrivateData

Public Member Functions
	QwtPlotScaleItem (QwtScaleDraw::Alignment=QwtScaleDraw::BottomScale, const double pos=0.0)
	Constructor for scale item at the position pos.
virtual	~QwtPlotScaleItem ()
	Destructor .
virtual int	rtti () const override
	Get the runtime type information.
void	setScaleDiv (const QwtScaleDiv &)
	Assign a scale division.
const QwtScaleDiv &	scaleDiv () const
	Get the scale division.
void	setScaleDivFromAxis (bool on)
	Enable/Disable the synchronization of the scale division with the corresponding axis.
bool	isScaleDivFromAxis () const
	Check if synchronization of the scale division with the corresponding axis is enabled.
void	setPalette (const QPalette &)
	Set the palette.
QPalette	palette () const
	Get the palette.
void	setFont (const QFont &)
	Change the tick label font.
QFont	font () const
	Get the tick label font.
void	setScaleDraw (QwtScaleDraw *)
	Set a scale draw.
const QwtScaleDraw *	scaleDraw () const
	Get the scale draw (const version)
QwtScaleDraw *	scaleDraw ()
	Get the scale draw.
void	setPosition (double pos)
	Change the position of the scale.
double	position () const
	Get the position of the scale.
void	setBorderDistance (int)
	Align the scale to the canvas.
int	borderDistance () const
	Get the distance from a canvas border.
void	setAlignment (QwtScaleDraw::Alignment)
	Change the alignment of the scale.
virtual void	draw (QPainter *, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect) const override
	Draw the scale.
virtual void	updateScaleDiv (const QwtScaleDiv &, const QwtScaleDiv &) override
	Update the item to changes of the axes scale division.
Public Member Functions inherited from QwtPlotItem
	QwtPlotItem ()
	Default constructor.
	QwtPlotItem (const QString &title)
	Constructor with title as QString.
	QwtPlotItem (const QwtText &title)
	Constructor with title as QwtText.
virtual	~QwtPlotItem ()
	Destructor.
void	attach (QwtPlot *plot)
	Attach the item to a plot.
void	detach ()
	Detach the item from the plot.
QwtPlot *	plot () const
	Get the plot the item is attached to.
void	setTitle (const QString &title)
	Set the title using a QString.
void	setTitle (const QwtText &title)
	Set the title using a QwtText.
const QwtText &	title () const
	Get the title.
void	setItemAttribute (ItemAttribute, bool on=true)
	Set an item attribute.
bool	testItemAttribute (ItemAttribute) const
	Test an item attribute.
void	setItemInterest (ItemInterest, bool on=true)
	Set an item interest.
bool	testItemInterest (ItemInterest) const
	Test an item interest.
void	setRenderHint (RenderHint, bool on=true)
	Set a render hint.
bool	testRenderHint (RenderHint) const
	Test a render hint.
void	setRenderThreadCount (uint numThreads)
	Set the number of render threads.
uint	renderThreadCount () const
	Get the number of render threads.
void	setLegendIconSize (const QSize &)
	Set the legend icon size.
QSize	legendIconSize () const
	Get the legend icon size.
double	z () const
	Get the z-value.
void	setZ (double z)
	Set the z-value.
void	show ()
	Show the item.
void	hide ()
	Hide the item.
virtual void	setVisible (bool)
	Set the visibility.
bool	isVisible () const
	Check if the item is visible.
void	setAxes (QwtAxisId xAxis, QwtAxisId yAxis)
	Set both axes.
void	setXAxis (QwtAxisId)
	Set the x-axis.
QwtAxisId	xAxis () const
	Get the x-axis.
void	setYAxis (QwtAxisId)
	Set the y-axis.
QwtAxisId	yAxis () const
	Get the y-axis.
virtual void	itemChanged ()
	Notify the plot that the item has changed.
virtual void	legendChanged ()
	Notify the item that the legend has changed.
virtual QRectF	boundingRect () const
	Get the bounding rectangle.
virtual void	getCanvasMarginHint (const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, double &left, double &top, double &right, double &bottom) const
	Get margin hints for the canvas.
virtual void	updateLegend (const QwtPlotItem *, const QList< QwtLegendData > &)
	Update the item with changes of the legend.
QRectF	scaleRect (const QwtScaleMap &, const QwtScaleMap &) const
	Calculate the scale rectangle.
QRectF	paintRect (const QwtScaleMap &, const QwtScaleMap &) const
	Calculate the paint rectangle.
virtual QList< QwtLegendData >	legendData () const
	Return legend data.
virtual QwtGraphic	legendIcon (int index, const QSizeF &) const
	Return a legend icon.

Additional Inherited Members
Public Types inherited from QwtPlotItem
enum	RttiValues {   Rtti_PlotItem = 0 , Rtti_PlotGrid , Rtti_PlotScale , Rtti_PlotLegend ,   Rtti_PlotMarker , Rtti_PlotCurve , Rtti_PlotSpectroCurve , Rtti_PlotIntervalCurve ,   Rtti_PlotHistogram , Rtti_PlotSpectrogram , Rtti_PlotGraphic , Rtti_PlotTradingCurve ,   Rtti_PlotBarChart , Rtti_PlotMultiBarChart , Rtti_PlotShape , Rtti_PlotTextLabel ,   Rtti_PlotZone , Rtti_PlotVectorField , Rtti_PlotArrowMarker , Rtti_PlotBoxChart ,   Rtti_PlotUserItem = 1000 }
	Runtime type information. More...
enum	ItemAttribute { Legend = 0x01 , AutoScale = 0x02 , Margins = 0x04 }
	Plot Item Attributes. More...
enum	ItemInterest { ScaleInterest = 0x01 , LegendInterest = 0x02 }
	Plot Item Interests. More...
enum	RenderHint { RenderAntialiased = 0x1 }
	Render hints . More...
Protected Member Functions inherited from QwtPlotItem
QwtGraphic	defaultIcon (const QBrush &, const QSizeF &) const
	Create a default icon.

Detailed Description

A class which draws a scale inside the plot canvas.

Constructor & Destructor Documentation

QwtPlotScaleItem()

QwtPlotScaleItem::QwtPlotScaleItem ( QwtScaleDraw::Alignment  alignment = QwtScaleDraw::BottomScale, const double  pos = 0.0  )

explicit

Constructor for scale item at the position pos.

~QwtPlotScaleItem()

QwtPlotScaleItem::~QwtPlotScaleItem ( )

virtual

Destructor .

Member Function Documentation

borderDistance()

int QwtPlotScaleItem::borderDistance

(

)

const

Get the distance from a canvas border.

draw()

void QwtPlotScaleItem::draw ( QPainter *  painter, const QwtScaleMap &  xMap, const QwtScaleMap &  yMap, const QRectF &  canvasRect  ) const

overridevirtual

Draw the scale.

Implements QwtPlotItem.

font()

QFont QwtPlotScaleItem::font

(

)

const

Get the tick label font.

isScaleDivFromAxis()

bool QwtPlotScaleItem::isScaleDivFromAxis

(

)

const

Check if synchronization of the scale division with the corresponding axis is enabled.

palette()

QPalette QwtPlotScaleItem::palette

(

)

const

Get the palette.

position()

double QwtPlotScaleItem::position

(

)

const

Get the position of the scale.

rtti()

int QwtPlotScaleItem::rtti ( ) const

overridevirtual

Get the runtime type information.

Reimplemented from QwtPlotItem.

scaleDiv()

const QwtScaleDiv & QwtPlotScaleItem::scaleDiv

(

)

const

Get the scale division.

scaleDraw() [1/2]

QwtScaleDraw * QwtPlotScaleItem::scaleDraw

(

)

Get the scale draw.

scaleDraw() [2/2]

const QwtScaleDraw * QwtPlotScaleItem::scaleDraw

(

)

const

Get the scale draw (const version)

setAlignment()

void QwtPlotScaleItem::setAlignment

(

QwtScaleDraw::Alignment

alignment

)

Change the alignment of the scale.

setBorderDistance()

void QwtPlotScaleItem::setBorderDistance

(

int

distance

)

Align the scale to the canvas.

setFont()

void QwtPlotScaleItem::setFont

(

const QFont &

font

)

Change the tick label font.

setPalette()

void QwtPlotScaleItem::setPalette

(

const QPalette &

palette

)

Set the palette.

setPosition()

void QwtPlotScaleItem::setPosition

(

double

pos

)

Change the position of the scale.

setScaleDiv()

void QwtPlotScaleItem::setScaleDiv

(

const QwtScaleDiv &

scaleDiv

)

Assign a scale division.

setScaleDivFromAxis()

void QwtPlotScaleItem::setScaleDivFromAxis

(

bool

on

)

Enable/Disable the synchronization of the scale division with the corresponding axis.

setScaleDraw()

void QwtPlotScaleItem::setScaleDraw

(

QwtScaleDraw *

scaleDraw

)

Set a scale draw.

updateScaleDiv()

void QwtPlotScaleItem::updateScaleDiv ( const QwtScaleDiv &  xScaleDiv, const QwtScaleDiv &  yScaleDiv  )

overridevirtual

Update the item to changes of the axes scale division.

Reimplemented from QwtPlotItem.

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

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