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Simtel MSDOS 1992 September
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Simtel20_Sept92.cdr
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msdos
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deskjet
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djfonfmt.arc
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DJFONT.TXT
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1988-04-14
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5KB
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136 lines
The following descriptions of Deskjet softfont formats was condensed from the
Deskjet Software Developer's Guide. It does not include complete information
about the Deskjet softfont format; it merely provides enough information for a
user to convert a Laserjet softfont to Deskjet format.
There are two descriptor areas for each Deskjet softfont, just like the
Laserjet softfonts. The Font Descriptor is a part of the <esc> )s#W escape
sequence to create a font. The Character Descriptor follows the Laserjet
escape sequence format <esc> (s#W and is used when downloading a character.
The same escape sequences are used in a softfont file in the same order. The
major differences are that the Deskjet requires that the softfonts be
downloaded in ascending character order, and the descriptor formats are
different. So, basically, if the descriptors are modified, a Laserjet softfont
can be converted to Deskjet format.
The following is a brief outline of both descriptors. Two-byte fields are in
word format, one-byte fields in byte format.
DESKJET FONT DESCRIPTOR FORMAT
Bytes Field Description
------- -------------------- ------------------------------------------
0-1 Descriptor Size Value always 64 for Deskjet (64 decimal)
2-3 Font Identification Similar to Laserjet symbol set ID. Number
used is (symbol set field # x 256) +
(ASCII value for terminator). Note this is
slightly different than Laserjet.
4-5 Placement Level Should be 100 decimal
6-7 Font Spacing 0 = fixed 1 = proportional
8-9 Pitch value = ( CPI x 100 )
10-11 Height value = ( height in points x 100 )
12-13 Style 0 = upright 100 = Italic
14-15 Stroke Weight value = ( LJ stroke weight x 100 )
16-17 Typeface value = ( LJ typeface x 100)
18-19 Quality 200 for Laserjet fonts
20 Font Type 0 = 7 bit (only chars 33-127)
1 = 8 bit (only chars 22-127 and 160-255)
2 = IBM (only chars 1-6, 16-26, 28-255)
21-22 Space Width Width of space char (in 1/3600 inch)
23 Unidirectional Flag 0 for Laserjet fonts
24 Aux Compressed Flag 0 for Laserjet fonts
25 Aux Hidden Chars Flag 0 for Laserjet fonts
26 Half Pitch Flag 1 for Laserjet fonts
27 Double Pitch Flag 1 for Laserjet fonts
28 Half Height Flag 1 for Laserjet fonts
29 Bold Flag 0 = allow algorithmic boldfacing
1 = disallow algorithmic boldfacing
30 Draft Flag 0 = allow algorithmic draft print
1 = disallow algorithmic draft print
31 Bold Method 0 = one dot column of bolding
1 = two dot columns of bolding
32 Dot Resolution 0 for Laserjet fonts
33 Orientation 0 = portrait 1 = landscape
NOTE: Landscape is not same as Laserjet.
If Landscape is selected, it will
merely rotate characters. It is up
to the application to correctly
send characters to produce a true
landscape orientation!
34-35 Baseline Offset value = ( LJ baseline offset x 100 )
36-37 Tall Font Offset 0 for Laserjet fonts
38-39 Single Underline Mask 15 for Laserjet fonts
40-41 Double Underline Mask 3855 for Laserjet fonts
42-43 Page Hold Timer Time to hold page before it is ejected
44-59 Font Name ASCII name of font
60-61 Data Length Length of font tables and dot data
62-63 Reserved must be 0
DESKJET CHARACTER DESCRIPTOR FORMAT
Bytes Field Description
------- -------------------- ------------------------------------------
0 Character Format must be 5
1 Reserved must be 0
2 Descriptor Size must be 6
3 Character Type 0 for Laserjet fonts
4 Normal Width normal character width (in .06 inch)
5 Compressed Width compressed character width (in .06 inch)
6 Left Proportional Pad space at left of char (in .06 inch)
7 Right Proportional Pad space at right of char (in .06 inch)