Scroll to navigation

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 ()
 
void setTime (const QTime &=QTime::currentTime())
 

Public Member Functions


QwtAnalogClock (QWidget *parent=NULL)
 
virtual ~QwtAnalogClock ()
 
virtual void setHand (Hand, QwtDialNeedle *)
 
const QwtDialNeedle * hand (Hand) const
 
QwtDialNeedle * hand (Hand)
 

Protected Member Functions


virtual QwtText scaleLabel (double) const
 
virtual void drawNeedle (QPainter *, const QPointF &, double radius, double direction, QPalette::ColorGroup) const
 
virtual void drawHand (QPainter *, Hand, const QPointF &, double radius, double direction, QPalette::ColorGroup) const
 

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);
Qwt is missing a set of good looking hands. Contributions are very welcome.
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
 

QwtAnalogClock::~QwtAnalogClock () [virtual]

Destructor.

Member Function Documentation

void QwtAnalogClock::drawHand (QPainter *painter, Handhd, const QPointF &center, doubleradius, doubledirection, QPalette::ColorGroupcg) 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, doubleradius, doubledir, QPalette::ColorGroupcolorGroup) 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.

QwtDialNeedle * QwtAnalogClock::hand (Handhd) Returns:

Clock hand
Parameters:
hd Specifies the type of hand
See also:
setHand()
 

const QwtDialNeedle * QwtAnalogClock::hand (Handhd) const Returns:

Clock hand
Parameters:
hd Specifies the type of hand
See also:
setHand()
 

QwtText QwtAnalogClock::scaleLabel (doublevalue) const [protected, virtual] Find the scale label for a given value

Parameters:
value Value
Returns:
Label
 
Reimplemented from QwtDial.

void QwtAnalogClock::setCurrentTime () [slot]

Set the current time. This is the same as QwtAnalogClock::setTime(), but Qt < 3.0 can't handle default parameters for slots.

void QwtAnalogClock::setHand (Handhand, QwtDialNeedle *needle) [virtual] Set a clockhand

Parameters:
hand Specifies the type of hand
 
needle Hand
See also:
hand()
 

void QwtAnalogClock::setTime (const QTime &time = QTime::currentTime()) [slot] Set a time

Parameters:
time Time to display
 
 

Author

Generated automatically by Doxygen for Qwt User's Guide from the source code.
Fri Apr 15 2011 Version 6.0.0