10.0;edfont (edit_font), revision 1.0, 88/06/02
edfont (edit_font) - Edit a character font.
usage: edfont [pathname | -v]
DESCRIPTION
edfont is an interactive program with both menu-driven and command-line
interfaces. It allows you to create, edit, and view character font files.
You can specify the font file with the file parameter, or use the "Open
Font" entry in the "File" menu. If the -v option is used, edfont will
print its version number and exit.
Generally, you must press the left mouse button <M1> to activate commands
in the menu-driven interface. When you must enter a string (for example,
when you designate which font you want to open) and there is a "Done"
field on the menu, enter the string, point to "Done" and press <M1> to
activate. If "Done" does not appear when you must enter a string, simply
type the string and press <RETURN> to activate the command.
When using the menu-driven interface, you may notice that you cannot
always select every menu choice. For example, you can't select "Open
Font" if you already have one open, and likewise it's invalid to try to
close a font when no font is open. When commands are invalid, as in these
cases, their places on the menus are grayed out so that they can't be
selected.
edfont lets you select a character (glyph) in a variety of ways. The
utility interprets input this way:
⊕ Any three-character string whose first character is a lowercase c has
its final two characters interpreted as a compose sequence (e.g., ca^
for lowercase a with a circumflex accent)
⊕ Any string that begins with 0x is interpreted as a hexadecimal code
(e.g., 0x41 for uppercase A)
⊕ Any string that begins with 0 (zero) is interpreted as octal (e.g.,
0101 for A)
⊕ Any string that begins with a digit other than zero is considered to
be decimal (e.g., 65 for A)
⊕ Any other string is considered to be an ASCII character (e.g., A for
A)
For more information on compose sequences, see your system's User's
Guide. For a list of decimal, octal, and hexadecimal values for the
characters in Apollo's default character set, as well as a list of the
compose sequences, see the files in the /usr/pub directory.
When you invoke edfont, it sets default values for several variables.
You can change those defaults using either the appropriate command in the
menu-driven interface or set in the command-driven interface. For more
information on these interfaces see the section on command interfaces,
below. The following table lists variables, their types, default values
(if any), and purpose.
Variable/Type Default Description
fontpath/string :/sys/dm/fonts List of directories,
separated by colons, in
which edfont should search
for fonts
fontservers/string /usr/apollo/lib/edfont The search path for the
font servers directory
fill/string outline The name of the current
fill pattern
fontorigin/coord none The coordinate value that
tells the number of pixels
below and to the left of
the font origin
fontsize/coord none The width and height of the
font bounding box
fontspacing/coord none The horizontal and vertical
font spacing (leading)
glyphoffset/coord none The offset of the current
glyph from the font origin
glyphsize/coord none The width and height of the
bitmap for the current
glyph
glyphwidth/coord none The number of pixels from
the right edge of the
current glyph to the left
edge of the next glyph
mask/string src ^ dst The current mask
(raster operation)
edfont handles fonts created using Apollo's current and pre-SR10 formats,
as well as Adobe BDF fonts.
Menu Interface
Note: You can get additional information about any item on the display by
pressing the HELP key at the cursor position where you need help. This
pops a help box. To return to the original display, move the cursor out
of the help box.
Font When you position the cursor here and press <M1>, edfont
displays a menu with the following choices:
Open Font
Close Font
Select Glyph
Font Params
Glyph Params
Quit
Use these choices to open and close the font you want to edit, select an
individual glyph (character) to edit, and examine or change the font's
parameters or a single glyph's parameters.
Tools If you press <M1>, you will see the following choices:
Grid
Metrics
By default, both are turned on. If you turn off Grid, you no longer will
see the pixel-by-pixel bitmap grid in the edit window. If you turn off
Metrics, the glyph fills the edit window.
Metrics shows these three attributes of your glyph and font:
⊕ Origin and baseline (fine dotted line)
⊕ Glyph-bounding box (long dashed line)
⊕ Font-bounding box (short dashed line)
Commands If you press <M1>, you will see the following choices:
Undo Undo remembers your last 10 changes to the current glyph.
Undo does not work on parameter changes, however.
Run Commands You can set up a file of commands and direct edfont to
execute that file. For more information on the commands
you can use, see the description of the command interface,
below.
Copy Glyph Copies a glyph from elsewhere in your font or from another
font.
Delete Glyph This deletes a glyph.
Rotate Glyph This rotates a glyph by the number of degrees you specify.
Draw When you position the cursor here and press <M1>, you will see
the following choices:
Pixel Manipulate individual pixels
Freehand Draw freehand
Line Draw lines
Box Draw boxes
Circle Draw circles
Cut Select and delete a pixel or range of pixels
Copy Select and copy a pixel or range of pixels
Paste Paste in a pixel or range of pixels that you have
previously cut or copied
Zoom Zoom in on a selected portion of the glyph
Note that after you Cut or Copy, edfont automatically changes
the Draw mode to Paste. You can manually change it to something
else if you prefer.
Fill When you position the cursor here and press <M1>, you will see
the following choices:
Outline this is the default
25% gray
50% gray
75% gray
black
bricks
chex
/stripes right-leaning stripes
\stripes left-leaning stripes
|stripes vertical stripes
-stripes horizontal stripes
tri
waves
The way edfont fills an entity such as a circle or box depends
on which fill you choose. If you choose 50% gray, for example,
and then create a box, edfont turns on half of the pixels
inside the box to create a 50% gray effect. If you choose 75%
or 25% gray, edfont turns on proportionally more or fewer
pixels to get the desired effect.
Mask When you position the cursor here and press <M1>, you will see
the following choices (where "src" means source, "dst" means
destination, and the other characters are logical operators):
Menu Choices Logical Operation
clear Assign zero to all new destination values
src & dst Assign source AND destination to new destination
src & ~dst Assign source AND complement of destination to new
destination
src Assign source values to new destination
~src & dst Assign complement of source AND destination to new
destination
dst Assign all destination values to new destination
src ^ dst Assign source EXCLUSIVE OR destination to new destination
(default)
src | dst Assign source OR destination to new destination
~(src | dst) Assign complement of source AND complement of destination
to new destination
src == dst Assign source EQUIVALENCE destination to new destination
~dst Assign complement of destination to new destination
src | ~dst Assign source OR complement of destination to new
destination
~src Assign complement of source to new destination
~src | dst Assign complement of source OR destination to new
destination
~(src & dst) Assign complement of source OR complement of destination
to new destination
set Assign 1 to all new destination values
Setting the mask value turns pixels on. That is, if you select a pixel or
range of pixels with this mask, all the pixels turn black, regardless of
whether they already were black. The mask clear turns a pixel or range of
pixels off (white), regardless of the pixel's initial value.
The default mask src ^ dst toggles pixels. That is, if they already were
black, they become white, and vice versa. However, if you are drawing in
Freehand mode, this mask toggles the first pixel you cross and then sets
the rest of the pixels you cross to that first pixel's value.
When you have a font open, the menu-driven interface also includes two
boxes on the right side of the display labeled "<<<" and ">>>". The two
are for displaying the previous and next glyph, respectively, in the
current font. Move the cursor over either box and press <M1> to
activate.
Command Interface
In addition to edfont's menu-driven interface, you can use the following
commands in the input pad at the bottom of the edfont window, or embed
them in edfont scripts.
Commands (Arguments) Description
!shell-command Run a shell command in the edfont window.
box x1 y1 x2 y2 Draw a box that is bounded by (x1,y1) and
(x2,y2).
circle x y r Draw a circle which has its center at (x,y)
and a radius of r.
close [-save|-nosave] Close the font. If you specify -save,
edfont saves your changes, while if you
specify -nosave, edfont ignores them.
copy glyphcode [fontfile] Copy the specified glyph to the current
glyph. If you specify a fontfile, edfont
copies the glyph from that font; otherwise,
it copies the glyph from the current font.
delete Delete the current glyph.
grid on | off Turn the bitmap grid on or off.
help [command] Get a list of available commands, or get
help on the specified command.
line x1 y1 x2 y2 Draw a line that begins at (x1,y1) and ends
at (x2,y2).
metrics on | off Turn the font metrics display on or off.
next Go to the next glyph in the current font.
open fontfile Open the specified fontfile.
pixel x y Draw a pixel at (x,y).
previous Go to the previous glyph in the current
font.
quit [-save|-nosave] Exit edfont, closing the current font (if
one is open). See close for information on
-save and -nosave.
Commands (Arguments) Description
rotate degrees Rotate the current glyph by the specified
number of degrees.
select glyphcode Go to the specified glyph. For information
on entering a glyph or glyphcode see the
Description section above.
set var=value Set var to the specified value. var can be
one of the edfont's parameters, as
described in the Description section above.
source filename Execute the command-script filename.
undo Undo the last bitmap operation.
unzoom Zoom out one level.
zoom x1 y1 x2 y2 Zoom in so that the view is filled with the
box bounded by (x1, y1) and (x2,y2).
SEE ALSO
More information is available. Type
help fl For information on loading a font
help fonts For information on fonts supplied with the Domain/OS
system