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68 lines
1.5 KiB
68 lines
1.5 KiB
15 years ago
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require 'Qt'
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class DigitalClock < Qt::LCDNumber
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slots 'stopDate()', 'showTime()'
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# Constructs a DigitalClock widget
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def initialize
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super
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@showingColon = false
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setFrameStyle(Qt::Frame.Panel | Qt::Frame.Raised)
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setLineWidth(2) # set frame line width
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showTime # display the current time
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@normalTimer = startTimer(500) # 1/2 second timer events
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@showDateTimer = -1 # not showingdate
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end
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# Handles timer events for the digital clock widget.
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# There are two different timers; one timer for updating the clock
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# and another one for switching back from date mode to time mode.
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def timerEvent (e)
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if (e.timerId == @showDateTimer) # stop showing date
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stopDate
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else # normal timer
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if (@showDateTimer == -1) # not showing date
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showTime()
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end
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end
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end
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# Enters date mode when the left mouse button is pressed.
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def mousePressEvent (e)
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if (e.button == Qt::MouseEvent.LeftButton) # left button pressed
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showDate
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end
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end
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def stopDate
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killTimer(@showDateTimer)
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@showDateTimer = -1
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showTime
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end
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def showTime
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@showingColon = !@showingColon # toggle/blink colon
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s = Qt::Time.currentTime.toString[0..4]
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if (!@showingColon)
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s[2] = ' '
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end
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if (s[0] == '0')
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s[0] = ' '
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end
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display(s) # set LCD number/text
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end
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def showDate
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if (@showDateTimer != -1) # already showing date
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return
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end
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date = Qt::Date.currentDate
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s = sprintf('%2d %2d', date.month, date.day)
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display(s) # sets the LCD number/text
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@showDateTimer = startTimer(2000) # keep this state for 2 secs
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end
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end
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