Manual: xfd

XFD(1)						   General Commands Manual					      XFD(1)

NAME
       xfd - display all the characters in an X font

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

       xfd [-options ...] -fa fontname

DESCRIPTION
       The  xfd	 utility creates a window containing the name of the font being displayed, a row of command buttons, several
       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 bottom.  The first character displayed at the top left will be charac‐
       ter  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) or the XftDrawString32
       routine,	 depending  on	whether	 the  -fn or -fa option was given.  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 background color to be displayed.

       The origin of each glyph is normally set so that the character 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 respective 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 xls‐
       fonts  and fc-list for ways to generate lists of fonts, as well as more detailed summaries of their metrics and prop‐
       erties.

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

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

       -fa font
	       This  option  specifies	a  Xft font to be displayed. This can also be set with the FontGrid face resource. A
	       font pattern must be specified.

       -box    This option indicates that a box should be displayed 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  char‐
	       acters  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 Font‐
	       Grid boxColor resource.

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

       -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,  indenta‐
       tion  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
		 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 corresponding class name.

APPLICATION SPECIFIC RESOURCES
       The instance names of the application specific resources are given below.  Capitalize the first	letter	of  the	 re‐
       source  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 de‐
	       scent.

       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 upper left cor‐
	       ner 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 charac‐
	       ter.

       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 selectFormat resource.

SEE ALSO
       X(7), xlsfonts(1), xrdb(1), xfontsel(1), fc-list(1), fonts.conf(5), 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						  xfd 1.1.4						      XFD(1)