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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  contain‐
       ing 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 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 charac‐
       ter  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  unusu‐
       ally  large ascent, descent, or right bearing (as is the case with cursor font), some charac‐
       ter 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 xlsfonts and fc-list 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  op‐
       tions 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 Font‐
               Grid 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 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, indentation 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 resource instance name to get the corresponding class name.  These re‐
       sources are unlikely to be interesting unless you are localizing xfd  for  a  different  lan‐
       guage.

       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 de‐
               fault is "width %d; left %d, right %d; ascent %d, descent %d (font %d, %d)".  The ar‐
               guments  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 cur‐
               rently 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  charac‐
               ter  at  the  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  charac‐
               ter, 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 ar‐
               guments  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  Descrip‐
       tion 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 1.1.3                                       XFD(1)