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

NAME

QwtAnalogClock -

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 ()
 
const QwtDialNeedle * hand (Hand) const
 
QwtDialNeedle * hand (Hand)
 
virtual void setHand (Hand, QwtDialNeedle *)
 

Protected Member Functions


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

Constructor & Destructor Documentation

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

Constructor
Parameters:
parent Parent widget

Member Function Documentation

void QwtAnalogClock::drawHand (QPainter *painter, Handhd, const QPoint &center, intradius, 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 QPoint &center, intradius, doubledirection, QPalette::ColorGroupcg) 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
 
direction Dummy, not used.
 
cg ColorGroup
See also:
drawHand()
Reimplemented from QwtDial.

const QwtDialNeedle * QwtAnalogClock::hand (Handhd) const

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

QwtDialNeedle * QwtAnalogClock::hand ( Handhd)

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.
Tue Nov 20 2012 Version 5.2.3