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
       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.




X Version 11                       xfd 1.1.3                            XFD(1)