xclock



XCLOCK(1)                                                            XCLOCK(1)




NAME

       xclock - analog / digital clock for X


SYNOPSIS

       xclock  [  -help ] [ -analog ] [ -digital ] [ -brief ] [ -chime ] [ -hd
       color ] [ -hl color ] [ -update  seconds  ]  [  -strftime  format  ]  [
       -padding  number ] [ -norender ] [ -render ] [ -sharp ] [ -face pattern
       ]


DESCRIPTION

       The xclock program displays the time in analog or  digital  form.   The
       time  is  continuously updated at a frequency which may be specified by
       the user.


OPTIONS

       Xclock accepts all of the standard X Toolkit command line options along
       with the additional options listed below:

       -help   This  option  indicates  that  a  brief  summary of the allowed
               options should be printed on the standard error.

       -analog This option indicates that a conventional 12  hour  clock  face
               with tick marks and hands should be used.  This is the default.

       -digital or -d
               This option indicates that a 24 hour digital  clock  should  be
               used.

       -brief  This  option  indicates that the digital clock should only dis-
               play the hours and minutes fields.  The default is to show  the
               full time and date information.

       -utime or -d
               This  option indicates that a digital clock should display sec-
               onds since the Epoch (in format ’970012340 seconds since Epoch’
               instead of a standard 24-hour time.

       -strftime format
               This option allows an strftime(3) format string to be specified
               for the digital clock’s display.

       -twelve This option indicates that a digital clock should  display  the
               time in twelve hour format.

       -twentyfour
               This  option  indicates that a digital clock should display the
               time in twenty-four hour format.  This is the  default  when  a
               digital clock is used.

       -chime  This  option  indicates that the clock should chime once on the
               half hour and twice on the hour.

       -hands color (or -hd color)
               This option specifies the color  of  the  hands  on  an  analog
               clock.   The  default  is  black.   This  option is effectively
               ignored when Xrender is in use.

       -highlight color (or -hl color)
               This option specifies the color of the edges of the hands on an
               analog  clock,  and  is  only  useful  on  color displays.  The
               default is black.  This  option  is  effectively  ignored  when
               Xrender is in use.

       -update seconds
               This  option specifies the frequency in seconds at which xclock
               should update its display.  If the clock is obscured  and  then
               exposed, it will be updated immediately.  A value of 30 seconds
               or less will enable a second hand  on  an  analog  clock.   The
               default is 60 seconds.

       -padding number
               This  option  specifies  the  width  in  pixels  of the padding
               between the window border  and  clock  text  or  picture.   The
               default is 10 on a digital clock and 8 on an analog clock.

       -render This  option  tells xclock to use the Xrender extension to draw
               an anti-aliased face. This is the default if  xclock  has  been
               compiled  with  Xrender support.  Note that the color selection
               options and resources used when Xrender  is  in  effect  differ
               from the standard options.

       -norender
               This option turns off the use of Xrender to draw the clock.

       -sharp  This  option tells xclock to use sharper edges when drawn using
               the Xrender extension.

       -face pattern
               This option specifies the font to use in digital mode when  the
               Xrender extension is used.


X DEFAULTS

       This  program  uses  the  Clock widget.  It understands all of the core
       resource names and classes as well as:


       width (class Width)
               Specifies the width of  the  clock.   The  default  for  analog
               clocks  is  164 pixels; the default for digital clocks is what-
               ever is needed to hold the clock when displayed in  the  chosen
               font.

       height (class Height)
               Specifies  the  height  of  the  clock.  The default for analog
               clocks is 164 pixels; the default for digital clocks  is  what-
               ever  is  needed to hold the clock when displayed in the chosen
               font.

       update (class Interval)
               Specifies the frequency in seconds at which the time should  be
               redisplayed.

       foreground (class Foreground)
               Specifies  the color for the tick marks. The default depends on
               whether reverseVideo is specified.  If reverseVideo  is  speci-
               fied the default is lwhite, otherwise the default is black.


       hands (class Foreground)
               Specifies  the  color  of the insides of the clock’s hands. The
               default depends  on  whether  reverseVideo  is  specified.   If
               reverseVideo  is specified the default is lwhite, otherwise the
               default is black.  Note that this resource  is  not  used  when
               Xrender is in effect.

       highlight (class Foreground)
               Specifies  the  color  used to highlight the clock’s hands. The
               default is
                depends on whether reverseVideo is specified.  If reverseVideo
               is  specified  the  default is lwhite, otherwise the default is
               black.  Note that this resource is not used when Xrender is  in
               effect.

       analog (class Boolean)
               Specifies whether or not an analog clock should be used instead
               of a digital one.  The default is True.

       twentyfour (class Boolean)
               Specifies whether or not a digital  clock  should  display  the
               time in twenty-four hour format.  The default is True.

       chime (class Boolean)
               Specifies  whether or not a bell should be rung on the hour and
               half hour.

       padding (class Margin)
               Specifies the amount of internal padding in pixels to be  used.
               The default is 8.

       font (class Font)
               Specifies the font to be used for the digital clock.  Note that
               variable width fonts currently will  not  always  display  cor-
               rectly.   This font is only used when Xrender is not in effect.

       render (class Boolean)
               Specifies whether or not the Xrender extension should  be  used
               for  the  display.  The default is True if xclock has been com-
               piled with Xrender support.

       When Xrender is in  effect,  the  following  additional  resources  are
       understood:


       face (class FaceName)
               Specify  the  pattern  for  the font to be used for the digital
               clock when Xrender is used.

       sharp (class Boolean)
               Specifies if sharp edges should  be  used  when  rendering  the
               clock.  The default is False.

       buffer (class Boolean)
               Specifies  that  the updates of the image are drawn to a pixmap
               before copied into the window instead  drawing  them  into  the
               window directly.

       The  defaults of the following color resources depend on whether rever-
       seVideo is specified.  If reverseVideo  is  specified  the  default  is
       lwhite, otherwise the default is black.

       hourColor (class Foreground)
               The color of the hour hand.

       minuteColor (class Foreground)
               The color of the minute hand.

       secondColor (class Foreground)
               The color of the second hand.

       majorColor (class Foreground)
               The color of the major scale ticks (i. e. each five minutes).

       minorColor (class Foreground)
               The color of the minor scale ticks (between major ticks).


WIDGETS

       In  order  to  specify resources, it is useful to know the hierarchy of
       the widgets which compose xclock.  In the notation  below,  indentation
       indicates  hierarchical  structure.   The  widget  class  name is given
       first, followed by the widget instance name.

       XClock  xclock
            Clock  clock



ENVIRONMENT

       DISPLAY to get the default host and display number.

       XENVIRONMENT
               to get the name of a resource file that  overrides  the  global
               resources stored in the RESOURCE_MANAGER property.


FILES

       /usr/X11R6/lib/X11/app-defaults/XClock
              specifies required resources


SEE ALSO

       X(7x), xrdb(1), time(3C)


BUGS

       Xclock believes the system clock.

       When in digital mode, the string should be centered automatically.


AUTHORS

       Tony Della Fera (MIT-Athena, DEC)
       Dave Mankins (MIT-Athena, BBN)
       Ed Moy (UC Berkeley)




                                                                     XCLOCK(1)

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