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/****************************************************************************
**
** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
**
** This file is part of an example program for Qt. This example
** program may be used, distributed and modified without limitation.
**
*****************************************************************************/
#include "dclock.h"
#include <qdatetime.h>
//
// Constructs a DigitalClock widget with a parent and a name.
//
DigitalClock::DigitalClock( QWidget *parent, const char *name )
: QLCDNumber( parent, name )
{
showingColon = FALSE;
setFrameStyle( QFrame::Panel | QFrame::Raised );
setLineWidth( 2 ); // set frame line width
showTime(); // display the current time
normalTimer = startTimer( 500 ); // 1/2 second timer events
showDateTimer = -1; // not showing date
}
//
// Handles timer events for the digital clock widget.
// There are two different timers; one timer for updating the clock
// and another one for switching back from date mode to time mode.
//
void DigitalClock::timerEvent( QTimerEvent *e )
{
if ( e->timerId() == showDateTimer ) // stop showing date
stopDate();
else { // normal timer
if ( showDateTimer == -1 ) // not showing date
showTime();
}
}
//
// Enters date mode when the left mouse button is pressed.
//
void DigitalClock::mousePressEvent( QMouseEvent *e )
{
if ( e->button() == QMouseEvent::LeftButton ) // left button pressed
showDate();
}
//
// Shows the current date in the internal lcd widget.
// Fires a timer to stop showing the date.
//
void DigitalClock::showDate()
{
if ( showDateTimer != -1 ) // already showing date
return;
QDate date = QDate::currentDate();
QString s;
s.sprintf( "%2d %2d", date.month(), date.day() );
display( s ); // sets the LCD number/text
showDateTimer = startTimer( 2000 ); // keep this state for 2 secs
}
//
// Stops showing the date.
//
void DigitalClock::stopDate()
{
killTimer( showDateTimer );
showDateTimer = -1;
showTime();
}
//
// Shows the current time in the internal lcd widget.
//
void DigitalClock::showTime()
{
showingColon = !showingColon; // toggle/blink colon
QString s = QTime::currentTime().toString().left(5);
if ( !showingColon )
s[2] = ' ';
if ( s[0] == '0' )
s[0] = ' ';
display( s ); // set LCD number/text
}
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