QwtCompass Class Reference

A Compass Widget. More...

#include <qwt_compass.h>

Inheritance diagram for QwtCompass:

List of all members.

Classes
class	PrivateData
Public Member Functions
	QwtCompass (QWidget *parent=NULL)
	Constructor.
const QwtCompassRose *	rose () const
QwtCompassRose *	rose ()
void	setRose (QwtCompassRose *rose)
virtual	~QwtCompass ()
	Destructor.
Protected Member Functions
virtual void	drawRose (QPainter *, const QPointF &center, double radius, double north, QPalette::ColorGroup) const
virtual void	drawScaleContents (QPainter *, const QPointF &center, double radius) const
virtual void	keyPressEvent (QKeyEvent *)
Private Attributes
PrivateData *	d_data

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Detailed Description

A Compass Widget.

QwtCompass is a widget to display and enter directions. It consists of a scale, an optional needle and rose.

Note:

The examples/dials example shows how to use QwtCompass.

Definition at line 57 of file qwt_compass.h.

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Constructor & Destructor Documentation

QwtCompass::QwtCompass

(

QWidget *

parent = NULL

)

[explicit]

Constructor.

Parameters:

parent

Parent widget

Create a compass widget with a scale, no needle and no rose. The default origin is 270.0 with no valid value. It accepts mouse and keyboard inputs and has no step size. The default mode is QwtDial::RotateNeedle.

Definition at line 141 of file qwt_compass.cpp.

QwtCompass::~QwtCompass

(

)

[virtual]

Destructor.

Definition at line 159 of file qwt_compass.cpp.

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Member Function Documentation

void QwtCompass::drawRose	(	QPainter *	painter,
		const QPointF &	center,
		double	radius,
		double	north,
		QPalette::ColorGroup	cg
	)		const [protected, virtual]

Draw the compass rose

Parameters:

painter	Painter
center	Center of the compass
radius	of the circle, where to paint the rose
north	Direction pointing north, in degrees counter clockwise
cg	Color group

Definition at line 201 of file qwt_compass.cpp.

void QwtCompass::drawScaleContents	(	QPainter *	painter,
		const QPointF &	center,
		double	radius
	)		const [protected, virtual]

Draw the contents of the scale

Parameters:

painter	Painter
center	Center of the content circle
radius	Radius of the content circle

Reimplemented from QwtDial.

Definition at line 172 of file qwt_compass.cpp.

void QwtCompass::keyPressEvent

(

QKeyEvent *

kev

)

[protected, virtual]

Handles key events

Beside the keys described in QwtDial::keyPressEvent numbers from 1-9 (without 5) set the direction according to their position on the num pad.

See also:

isReadOnly()

Reimplemented from QwtAbstractSlider.

Definition at line 254 of file qwt_compass.cpp.

const QwtCompassRose * QwtCompass::rose

(

)

const

Returns:

rose

See also:

setRose()

Definition at line 231 of file qwt_compass.cpp.

QwtCompassRose * QwtCompass::rose

(

)

Returns:

rose

See also:

setRose()

Definition at line 240 of file qwt_compass.cpp.

void QwtCompass::setRose

(

QwtCompassRose *

rose

)

Set a rose for the compass

Parameters:

rose	Compass rose

Warning:

The rose will be deleted, when a different rose is set or in ~QwtCompass

See also:

rose()

Definition at line 215 of file qwt_compass.cpp.

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Member Data Documentation

PrivateData* QwtCompass::d_data [private]

Reimplemented from QwtDial.

Definition at line 79 of file qwt_compass.h.

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

• qwt_compass.h
• qwt_compass.cpp