Qwt User's Guide 6.0.0
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An analog clock. More...
#include <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 QPointF &, double radius, double direction, QPalette::ColorGroup) const |
virtual void | drawHand (QPainter *, Hand, const QPointF &, double radius, double direction, QPalette::ColorGroup) const |
An analog clock.
#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.
enum QwtAnalogClock::Hand |
QwtAnalogClock::QwtAnalogClock | ( | QWidget * | parent = NULL | ) | [explicit] |
Constructor
parent | Parent widget |
QwtAnalogClock::~QwtAnalogClock | ( | ) | [virtual] |
Destructor.
void QwtAnalogClock::drawHand | ( | QPainter * | painter, |
Hand | hd, | ||
const QPointF & | center, | ||
double | radius, | ||
double | direction, | ||
QPalette::ColorGroup | cg | ||
) | const [protected, virtual] |
Draw a clock hand
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().
painter | Painter |
center | Center of the clock |
radius | Maximum length for the hands |
dir | Dummy, not used. |
colorGroup | ColorGroup |
Reimplemented from QwtDial.
QwtDialNeedle * QwtAnalogClock::hand | ( | Hand | hd | ) |
const QwtDialNeedle * QwtAnalogClock::hand | ( | Hand | hd | ) | const |
QwtText QwtAnalogClock::scaleLabel | ( | double | value | ) | const [protected, virtual] |
Find the scale label for a given value
value | Value |
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 | ( | Hand | hand, |
QwtDialNeedle * | needle | ||
) | [virtual] |
void QwtAnalogClock::setTime | ( | const QTime & | time = QTime::currentTime() | ) | [slot] |
Set a time
time | Time to display |