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XFD(1)							XFD(1)

NAME
       xfd - display all the characters in an X font

SYNOPSIS
       xfd [-options ...] -fn fontname

DESCRIPTION
       The  xfd utility	 creates a window containing the name of
       the font being displayed, a row of command  buttons,  sev-
       eral lines of text for displaying character metrics, and a
       grid containing one glyph per cell.   The  characters  are
       shown  in increasing order from left to right, top to bot-
       tom.  The first character displayed at the top  left  will
       be  character  number  0 unless the -start option has been
       supplied in which case the character with the number given
       in the -start option will be used.

       The  characters	are  displayed	in  a grid of boxes, each
       large enough to hold any single	character  in  the  font.
       Each character glyph is drawn using the PolyText16 request
       (used by the Xlib routine  XDrawString16).   If	the  -box
       option  is  given,  a  rectangle will be drawn around each
       character, showing where an ImageText16 request	(used  by
       the  Xlib  routine  XDrawImageString16)	would cause back-
       ground color to be displayed.

       The origin of each glyph is normally set so that the char-
       acter  is  drawn in the upper left hand corner of the grid
       cell.  However, if a glyph has a negative left bearing  or
       an  unusually  large ascent, descent, or right bearing (as
       is the case with cursor	font),	some  character may  not
       appear in their own grid cells.	The -center option may be
       used to force all glyphs to be centered in  their  respec-
       tive cells.

       All  the characters in the font may not fit in the window
       at once. To see the next page of glyphs, press	the  Next
       button  at  the	top  of the window.  To see the previous
       page, press Prev.  To exit xfd, press Quit.

       Individual  character  metrics  (index,	width,	bearings,
       ascent  and  descent)  can  be displayed at the top of the
       window by clicking on the desired character.

       The font name displayed at the top of the  window  is  the
       full  name  of the font, as determined by the server.  See
       xlsfonts for ways to generate lists of fonts, as well  as
       more detailed summaries of their metrics and properties.

OPTIONS
       xfd  accepts  all  of  the  standard  toolkit command line
       options along with the additional options listed below:

X Version 11		Release 6.4				1

XFD(1)							XFD(1)

       -fn font
	       This option specifies the font  to  be  displayed.
	       This  can  also	be  set with  the  FontGrid font
	       resource.  A font must be specified.

       -box    This option indicates that a box should	be  dis-
	       played  outlining  the  area  that would be filled
	       with background color  by  an  ImageText request.
	       This  can  also	be set with the FontGrid boxChars
	       resource.  The default is False.

       -center This option indicates that each	glyph  should  be
	       centered in  its grid.	This can also be set with
	       the FontGrid centerChars resource.  The default is
	       False.

       -start number
	       This option specifies the glyph index of the upper
	       left hand corner of the grid.   This  is used  to
	       view  characters at  arbitrary	locations  in the
	       font.  This can also  be set  with  the	FontGrid
	       startChar resource.  The default is 0.

       -bc color
	       This  option  specifies	the  color  to be used if
	       ImageText boxes are drawn.  This can also  be  set
	       with the FontGrid boxColor resource.

       -rows numrows
	       This  option  specifies	the number of rows in the
	       grid.  This can also  be set  with  the	FontGrid
	       cellRows resource.

       -columns numcols
	       This option specifies the number of columns in the
	       grid.  This can also  be set  with  the	FontGrid
	       cellColumns resource.

WIDGETS
       In  order  to  specify resources, it is useful to know the
       widgets which compose xfd.  In the notation below,  inden-
       tation indicates hierarchical structure. The widget class
       name is given first, followed by the widget instance name.
       The application class name is Xfd.

       Xfd  xfd
	    Paned  pane
		 Label	fontname
		 Box  box
		      Command  quit
		      Command  prev
		      Command  next
		 Label	select
		 Label	metrics

X Version 11		Release 6.4				2

XFD(1)							XFD(1)

		 Label	range
		 Label	start
		 Form  form
		      FontGrid	grid

FONTGRID RESOURCES
       The FontGrid widget is an application-specific widget, and
       a subclass of the Simple widget in the Athena widget  set.
       The  effects and instance names of this widget's resources
       are given in the OPTIONS section.   Capitalize  the  first
       letter  of  the	resource  instance name to get the corre-
       sponding class name.

APPLICATION SPECIFIC RESOURCES
       The instance names of the application  specific	resources
       are  given  below.   Capitalize	the  first  letter of the
       resource instance name  to  get	the  corresponding  class
       name.   These  resources are  unlikely	to be interesting
       unless you are localizing xfd for a different language.

       selectFormat
	       Specifies a printf-style format	string	used  to
	       display	information about the selected character.
	       The  default  is "character  0x%02x%02x	(%u,%u)
	       (%#o,%#o)".   The  arguments  that will come after
	       the  format  string  are char.byte1,  char.byte2,
	       char.byte1,  char.byte2, char.byte1,  char.byte2.
	       char.byte1 is byte 1 of	the  selected  character.
	       char.byte2 is byte 2 of the selected character.

       metricsFormat
	       Specifies  a  printf-style  format  string used to
	       display character metrics.  The default is  "width
	       %d; left %d, right %d; ascent %d, descent %d (font
	       %d, %d)".  The arguments that will come after  the
	       format  string  are  the character metrics width,
	       lbearing, rbearing,  character  ascent,	character
	       descent, font ascent, and font descent.

       rangeFormat
	       Specifies  a  printf-style  format  string used to
	       display the range of  characters currently  being
	       displayed.   The default	 is  "range:  0x%02x%02x
	       (%u,%u) thru 0x%02x%02x (%u,%u)".   The	arguments
	       that  will  come after	the format string are the
	       following fields from  the  XFontStruct	that  is
	       returned from	opening	  the	font:  min_byte1,
	       min_char_or_byte2,  min_byte1,  min_char_or_byte2,
	       max_byte1,      max_char_or_byte2,      max_byte1,
	       max_char_or_byte2.

       startFormat
	       Specifies a printf-style format	string	used  to
	       display	information  about  the character at the

X Version 11		Release 6.4				3

XFD(1)							XFD(1)

	       upper left corner of the font grid.   The  default
	       is  "upper  left:  0x%04x (%d,%d)".  The arguments
	       that will come after the format string are the new
	       character, the high byte of the new character, and
	       the low byte of the new character.

       nocharFormat
	       Specifies a printf-style format string to  display
	       when  the  selected character does not exist.  The
	       default is "no such character  0x%02x%02x  (%u,%u)
	       (%#o,%#o)".   The  arguments  that will come after
	       the format string are the same as for the  select-
	       Format resource.

SEE ALSO
       X(1),  xlsfonts(1),  xrdb(1),  xfontsel(1), X Logical Font
       Description Conventions

BUGS
       The program should skip over pages  full of  non-existent
       characters.

AUTHOR
       Jim Fulton, MIT X Consortium; previous program of the same
       name by Mark Lillibridge, MIT Project Athena.

X Version 11		Release 6.4				4

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