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

#include <qwt_dial_needle.h>

Inheritance diagram for QwtDialNeedle:

[legend]

Public Member Functions
virtual void	draw (QPainter *, const QPointF &center, double length, double direction, QPalette::ColorGroup=QPalette::Active) const

const QPalette &	palette () const

	QwtDialNeedle ()
	Constructor. More...

virtual void	setPalette (const QPalette &)

virtual	~QwtDialNeedle ()
	Destructor. More...

Protected Member Functions
virtual void	drawKnob (QPainter *, double width, const QBrush &, bool sunken) const
	Draw the knob. More...

virtual void	drawNeedle (QPainter *painter, double length, QPalette::ColorGroup colorGroup) const =0
	Draw the needle. More...

Private Attributes
QPalette	m_palette

Detailed Description

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

QwtDialNeedle is a pointer that indicates a value by pointing to a specific direction.

See also: QwtDial, QwtCompass

Definition at line 27 of file qwt_dial_needle.h.

Constructor & Destructor Documentation

◆ QwtDialNeedle()

QwtDialNeedle::QwtDialNeedle ( )

Constructor.

Definition at line 182 of file qwt_dial_needle.cpp.

◆ ~QwtDialNeedle()

QwtDialNeedle::~QwtDialNeedle ( )

virtual

Destructor.

Definition at line 188 of file qwt_dial_needle.cpp.

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

Parameters

painter	Painter
center	Center of the dial, start position for the needle
length	Length of the needle
direction	Direction of the needle, in degrees counter clockwise
colorGroup	Color group, used for painting

Definition at line 219 of file qwt_dial_needle.cpp.

◆ drawKnob()

void QwtDialNeedle::drawKnob	(	QPainter *	painter,
		double	width,
		const QBrush &	brush,
		bool	sunken
	)		const

protectedvirtual

Draw the knob.

Definition at line 234 of file qwt_dial_needle.cpp.

◆ 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 QwtCompassWindArrow, QwtCompassMagnetNeedle, and QwtDialSimpleNeedle.

◆ palette()

const QPalette & QwtDialNeedle::palette ( ) const

Returns: the palette of the needle.

Definition at line 205 of file qwt_dial_needle.cpp.

◆ setPalette()

void QwtDialNeedle::setPalette ( const QPalette & palette )

virtual

Sets the palette for the needle.

Parameters

palette New Palette

Definition at line 197 of file qwt_dial_needle.cpp.

Member Data Documentation

◆ m_palette

QPalette QwtDialNeedle::m_palette

private

Definition at line 65 of file qwt_dial_needle.h.

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

Public Member Functions

Protected Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ QwtDialNeedle()

◆ ~QwtDialNeedle()

Member Function Documentation

◆ draw()

◆ drawKnob()

◆ drawNeedle()

◆ palette()

◆ setPalette()

Member Data Documentation

◆ m_palette