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Diffstat (limited to 'examples/dclock/dclock.cpp')
-rw-r--r-- | examples/dclock/dclock.cpp | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/examples/dclock/dclock.cpp b/examples/dclock/dclock.cpp new file mode 100644 index 000000000..be7cc8539 --- /dev/null +++ b/examples/dclock/dclock.cpp @@ -0,0 +1,97 @@ +/**************************************************************************** +** +** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved. +** +** This file is part of an example program for TQt. 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( TQWidget *parent, const char *name ) + : TQLCDNumber( parent, name ) +{ + showingColon = FALSE; + setFrameStyle( TQFrame::Panel | TQFrame::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( TQTimerEvent *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( TQMouseEvent *e ) +{ + if ( e->button() == TQMouseEvent::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; + TQDate date = TQDate::currentDate(); + TQString 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 + TQString s = TQTime::currentTime().toString().left(5); + if ( !showingColon ) + s[2] = ' '; + if ( s[0] == '0' ) + s[0] = ' '; + display( s ); // set LCD number/text +} |