61 lines
2.3 KiB
Plaintext
61 lines
2.3 KiB
Plaintext
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Newsgroups: cwi.sgi
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Subject: Re: new clock
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Distribution: cwi.sgi
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References: <2246@charon.cwi.nl>
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Last week I wrote:
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>For your enjoyment I have implemented a colorful clock.
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The clock has now been extended with some new facilities: a menu, an
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alarm and a gong. These may require some explanation beyond what's in
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the usage message.
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Menu
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----
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The right mouse button now pops up a menu that allows you to turn the
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seconds hand on or off and to switch the alarm off.
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Alarm
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-----
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The left and middle buttons set the alarm. When it is on, the alarm
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time is displayed as a time on a 24 hour clock in the bottom left
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corner. It is also indicated by two red triangles, corresponding to the
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little (hours) and big (minutes) hand. These hands can be moved around:
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the left mouse button moves the minutes hand, the middle button moves
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the hourds hand. Watch out for differences of twelve hours (always
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check the digital display); these can be corrected by dragging the hours
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hand once around the dial.
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When the alarm goes off, two things happen: a shell command specified on
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the command line with the -a option is executed (in the background), and
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the clock's colors change every two seconds, for five minutes. You can
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also turn the alarm off by using the menu accessible through the right
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mouse button.
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There is no default command for the -a option; if it is not specified,
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only the changing of the colors happens. If you have an 8 ohm speaker
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connected to the audio output of your Personal Iris, a suitable command
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would be:
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mclock -a '/ufs/guido/bin/sgi/play /ufs/guido/lib/sounds/alarm'
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Gong
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----
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Some people like a clock that makes noises every hour, or even more
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often. This is supported by the -g and -G options. With -g you specify
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a shell command to be executed to sound the gong; with -G you can
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specify the interval between gong calls, in seconds (default is one hour).
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The shell command is executed in the background. It is given two
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arguments: the hours (on a 24 hour clock!) and the minutes. The
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executable Python script /ufs/guido/bin/sgi/chime is a suitable example.
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Again, this only works if you have installed a speaker (I bet 8 ohm
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speakers are going to be in demand!)
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--
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Guido van Rossum, Centre for Mathematics and Computer Science (CWI), Amsterdam
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guido@cwi.nl or ..!hp4nl!cwi.nl!guido or guido%cwi.nl@uunet.uu.net
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"A thing of beauty is a joy till sunrise"
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