QwtAnalogClock - Man Page
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 override
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.
Definition at line 43 of file qwt_analog_clock.h.
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.
Definition at line 52 of file qwt_analog_clock.h.
Constructor & Destructor Documentation
QwtAnalogClock::QwtAnalogClock (QWidget * parent = NULL) [explicit]
Constructor
- Parameters
parent Parent widget
Definition at line 51 of file qwt_analog_clock.cpp.
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
Definition at line 239 of file qwt_analog_clock.cpp.
void QwtAnalogClock::drawNeedle (QPainter * painter, const QPointF & center, double radius, double direction, QPalette::ColorGroup colorGroup) const [override], [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.
colorGroup ColorGroup- See also
drawHand()
Reimplemented from QwtDial.
Definition at line 202 of file qwt_analog_clock.cpp.
QwtDialNeedle * QwtAnalogClock::hand (Hand hd)
- Returns
Clock hand
- Parameters
hd Specifies the type of hand
- See also
setHand()
Definition at line 146 of file qwt_analog_clock.cpp.
const QwtDialNeedle * QwtAnalogClock::hand (Hand hd) const
- Returns
Clock hand
- Parameters
hd Specifies the type of hand
- See also
setHand()
Definition at line 159 of file qwt_analog_clock.cpp.
void QwtAnalogClock::setHand (Hand hand, QwtDialNeedle * needle)
Set a clock hand
- Parameters
hand Specifies the type of hand
needle Hand- See also
hand()
Definition at line 132 of file qwt_analog_clock.cpp.
void QwtAnalogClock::setTime (const QTime & time) [slot]
Set a time
- Parameters
time Time to display
Definition at line 176 of file qwt_analog_clock.cpp.
Author
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