QwtAnalogClock(3)

NAME
QwtAnalogClock -

SYNOPSIS

Inherits QwtDial.

Detailed Description

An analog clock.

Example.RS 4

#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.

Definition at line 45 of file qwt_analog_clock.h.

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

Member Enumeration Documentation

  enum QwtAnalogClock::Hand

Hand type

See also:
    setHand(), hand()

Definition at line 55 of file qwt_analog_clock.h.

Constructor & Destructor Documentation

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

Constructor

Parameters:
    parent Parent widget

Definition at line 16 of file qwt_analog_clock.cpp.

  QwtAnalogClock::~QwtAnalogClock () [virtual]

Destructor.

Definition at line 82 of file qwt_analog_clock.cpp.

Member Function Documentation

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

Set a clockhand

Parameters:
    hand Specifies the type of hand
    needle Hand

See also:
    QwtAnalogClock::hand()

Definition at line 104 of file qwt_analog_clock.cpp.

References QwtDial::needle().

  const QwtDialNeedle * QwtAnalogClock::hand (Hand hd) const

Returns:
    Clock hand

Parameters:
    hd Specifies the type of hand

See also:
    QwtAnalogClock::setHand

Definition at line 131 of file qwt_analog_clock.cpp.

Referenced by drawHand().

  QwtDialNeedle * QwtAnalogClock::hand (Hand hd)

Returns:
    Clock hand

Parameters:
    hd Specifies the type of hand

See also:
    QwtAnalogClock::setHand

Definition at line 118 of file qwt_analog_clock.cpp.

  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.

Definition at line 142 of file qwt_analog_clock.cpp.

References setTime().

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

Set a time

Parameters:
    time Time to display

Definition at line 151 of file qwt_analog_clock.cpp.

References QwtAbstractSlider::setValid(), and QwtAbstractSlider::setValue().

Referenced by setCurrentTime().

  QwtText QwtAnalogClock::scaleLabel (double value) const [protected, virtual]

Find the scale label for a given value

Parameters:
    value Value

Returns:
    Label

Reimplemented from QwtDial.

Definition at line 168 of file qwt_analog_clock.cpp.

  void QwtAnalogClock::drawNeedle (QPainter * painter, const QPoint & center, int radius, double direction, QPalette::ColorGroup cg) 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:
    QwtAnalogClock::drawHand()

Reimplemented from QwtDial.

Definition at line 191 of file qwt_analog_clock.cpp.

References drawHand(), QwtAbstractSlider::isValid(), QwtDial::origin(), and QwtDoubleRange::value().

  void QwtAnalogClock::drawHand (QPainter * painter, Hand hd, const QPoint & center, int 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

Definition at line 220 of file qwt_analog_clock.cpp.

References QwtDialNeedle::draw(), hand(), and QwtDial::needle().

Referenced by drawNeedle().

Author

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