QwtDialNeedle Class Reference

Base class for needles that can be used in a QwtDial. More...

#include <qwt_dial_needle.h>

Inheritance diagram for QwtDialNeedle:

Public Member Functions
	QwtDialNeedle ()
	Constructor.
virtual	~QwtDialNeedle ()
	Destructor.
virtual void	setPalette (const QPalette &)
	Set the palette for the needle.
const QPalette &	palette () const
	Return the palette of the needle.
virtual void	draw (QPainter *, const QPointF &center, double length, double direction, QPalette::ColorGroup=QPalette::Active) const
	Draw the needle.

Protected Member Functions
virtual void	drawNeedle (QPainter *painter, double length, QPalette::ColorGroup colorGroup) const =0
	Draw the needle.
virtual void	drawKnob (QPainter *, double width, const QBrush &, bool sunken) const
	Draw the knob.

Detailed Description

Base class for needles that can be used in a QwtDial.

Constructor & Destructor Documentation

QwtDialNeedle()

QwtDialNeedle::QwtDialNeedle

(

)

Constructor.

Constructor .

~QwtDialNeedle()

QwtDialNeedle::~QwtDialNeedle ( )

virtual

Destructor.

Destructor .

Member Function Documentation

draw()

void QwtDialNeedle::draw ( QPainter *  painter, const QPointF &  center, double  length, double  direction, QPalette::ColorGroup  colorGroup = QPalette::Active  ) const

virtual

Draw the needle.

drawNeedle()

virtual void QwtDialNeedle::drawNeedle ( QPainter *  painter, double  length, QPalette::ColorGroup  colorGroup  ) const

protectedpure virtual

Draw the needle.

The origin of the needle is at position (0.0, 0.0 ) pointing in direction 0.0 ( = east ).

The painter is already initialized with translation and rotation.

Parameters

painter	Painter
length	Length of the needle
colorGroup	Color group, used for painting

See also

setPalette(), palette()

Implemented in QwtDialSimpleNeedle, QwtCompassMagnetNeedle, and QwtCompassWindArrow.

palette()

const QPalette & QwtDialNeedle::palette

(

)

const

Return the palette of the needle.

setPalette()

void QwtDialNeedle::setPalette ( const QPalette &  palette )

virtual

Set the palette for the needle.

Sets the palette for the needle.

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

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