Provided by: x11-utils_7.6+4_amd64 bug

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  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) 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 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
       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 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
       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 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
               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.