man > xfd(1)

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 1.1.4                                       XFD(1)