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QwtAnalogClock(3) Qwt User's Guide QwtAnalogClock(3)

NAME

QwtAnalogClock - An analog clock.

SYNOPSIS

#include <qwt_analog_clock.h>

Inherits QwtDial.

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

Additional Inherited Members

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.

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.

Constructor & Destructor Documentation

QwtAnalogClock::QwtAnalogClock (QWidget * parent = NULL) [explicit]

Constructor

Parameters:

parent Parent widget

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

Author

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Wed Jan 2 2019 Version 6.1.4