MirOS Manual: xfd(1)


XFD(1)              UNIX Programmer's 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 char-
     acter glyph is drawn using the PolyText16 request (used by
     the Xlib routine XDrawString16). If the -box option is
     given, a rectangle will be drawn around each character,
     showing where an ImageText16 request (used by the Xlib rou-
     tine XDrawImageString16) would cause background color to be
     displayed.

     The origin of each glyph is normally set so that the charac-
     ter 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 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
     for ways to generate lists of fonts, as well as more
     detailed summaries of their metrics and properties.

OPTIONS


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XFD(1)              UNIX Programmer's Manual               XFD(1)

     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 back-
             ground 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 cen-
             tered 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, indenta-
     tion indicates hierarchical structure.  The widget class
     name is given first, followed by the widget instance name.
     The application class name is Xfd.

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     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 des-
             cent, 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

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             (%u,%u) thru 0x%02x%02x (%u,%u)".  The arguments
             that will come after the format string are the fol-
             lowing 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), fontconfig(3), 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.

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