xfd
(1)
Name
xfd - display all the characters in an X font
Synopsis
/usr/bin/xfd [-options ...] -fn fontname
xfd [-options ...] -fa fontname
Description
User Commands XFD(1)
NAME
xfd - display all the characters in an X font
SYNOPSIS
/usr/bin/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) or the XftDrawString32 rou-
tine, 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 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
and fc-list for ways to generate lists of fonts, as well as
more detailed summaries of their metrics and properties.
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User Commands XFD(1)
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 Font-
Grid 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 Image-
Text 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 cell-
Rows resource.
-columns numcols
This option specifies the number of columns in the
grid. This can also be set with the FontGrid cell-
Columns resource.
WIDGETS
In order to specify resources, it is useful to know the wid-
gets 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
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User Commands XFD(1)
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 dis-
play 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 dis-
play 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
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User Commands XFD(1)
display the range of characters currently being dis-
played. 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 dis-
play 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(5), xlsfonts(1), xrdb(1), xfontsel(1), fc-list(1),
fonts.conf(4), 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.
ATTRIBUTES
See attributes(5) for descriptions of the following
attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |x11/xfd |
+-----------------------------+-----------------------------+
|Interface Stability |Committed |
+-----------------------------+-----------------------------+
X Version 11 Last change: xfd 1.1.2 4