QwtAnalogClock Class Reference

An analog clock. More...

#include <qwt_analog_clock.h>

Inheritance diagram for QwtAnalogClock:

Public Types
enum	Hand { SecondHand, MinuteHand, HourHand, NHands }
Public Slots
void	setCurrentTime ()
	Set the current time.
void	setTime (const QTime &)
Public Member Functions
	QwtAnalogClock (QWidget *parent=NULL)
virtual	~QwtAnalogClock ()
	Destructor.
void	setHand (Hand, QwtDialNeedle *)
const QwtDialNeedle *	hand (Hand) const
QwtDialNeedle *	hand (Hand)
Protected Member Functions
virtual void	drawNeedle (QPainter *, const QPointF &, double radius, double direction, QPalette::ColorGroup) const
	Draw the needle.
virtual void	drawHand (QPainter *, Hand, const QPointF &, double radius, double direction, QPalette::ColorGroup) const

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Detailed Description

An analog clock.

Example

  #include <qwt_analog_clock.h>

  QwtAnalogClock *clock = new QwtAnalogClock(...);
  clock->scaleDraw()->setPenWidth(3);
  clock->setLineWidth(6);
  clock->setFrameShadow(QwtDial::Sunken);
  clock->setTime();

  // update the clock every second
  QTimer *timer = new QTimer(clock);
  timer->connect(timer, SIGNAL(timeout()), clock, SLOT(setCurrentTime()));
  timer->start(1000);

Note:

The examples/dials example shows how to use QwtAnalogClock.

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Member Enumeration Documentation

enum QwtAnalogClock::Hand

Hand type

See also:

setHand(), hand()

Enumerator:

SecondHand	Needle displaying the seconds.
MinuteHand	Needle displaying the minutes.
HourHand	Needle displaying the hours.
NHands	Number of needles.

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Constructor & Destructor Documentation

QwtAnalogClock::QwtAnalogClock

(

QWidget *

parent = NULL

)

[explicit]

Constructor

Parameters:

parent

Parent widget

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Member Function Documentation

void QwtAnalogClock::drawHand	(	QPainter *	painter,
		Hand	hd,
		const QPointF &	center,
		double	radius,
		double	direction,
		QPalette::ColorGroup	cg
	)		const [protected, virtual]

Draw a clock hand

Parameters:

painter	Painter
hd	Specify the type of hand
center	Center of the clock
radius	Maximum length for the hands
direction	Direction of the hand in degrees, counter clockwise
cg	ColorGroup

void QwtAnalogClock::drawNeedle	(	QPainter *	painter,
		const QPointF &	center,
		double	radius,
		double	dir,
		QPalette::ColorGroup	colorGroup
	)		const [protected, virtual]

Draw the needle.

A clock has no single needle but three hands instead. drawNeedle() translates value() into directions for the hands and calls drawHand().

Parameters:

painter	Painter
center	Center of the clock
radius	Maximum length for the hands
dir	Dummy, not used.
colorGroup	ColorGroup

See also:

drawHand()

Reimplemented from QwtDial.

const QwtDialNeedle * QwtAnalogClock::hand

(

Hand

hd

)

const

Returns:

Clock hand

Parameters:

hd	Specifies the type of hand

See also:

setHand()

QwtDialNeedle * QwtAnalogClock::hand

(

Hand

hd

)

Returns:

Clock hand

Parameters:

hd	Specifies the type of hand

See also:

setHand()

void QwtAnalogClock::setHand	(	Hand	hand,
		QwtDialNeedle *	needle
	)

Set a clock hand

Parameters:

hand	Specifies the type of hand
needle	Hand

See also:

hand()

void QwtAnalogClock::setTime

(

const QTime &

time

)

[slot]

Set a time

Parameters:

time	Time to display

List of all members.