Vertical Substitution Segment
The Vertical Substitution Segment contains pairs of glyph
IDs. Each pair specifies the horizontal and vertical glyph ID
for a character. The segment can be built directly from a
TrueType mort table which contains a vertical substitution
array. The segment definition is shown in the table below.
Byte
15 (MSB) 8
7 (LSB) 0
Byte
0
VT (22100)
1
2
4
Data Segment Size (4*n+4) *
3
5
6
Horizontal Glyph ID #1
7
8
Vertical Glyph ID #1
9
. . .
. . .
4*n+2
Horizontal Glyph ID #n
4*n+3
4*n+4
Vertical Glyph ID #n
4*n+5
4*n+6
End of table mark #1 = 0xFFFF
4*n+7
4*n+8
End of table mark #2 = 0xFFFF
4*n+9
The Horizontal Glyph ID field is used by TrueType as an ID
number for the horizontal glyph data associated with a
given character. The Vertical Glyph ID field contains the ID
number for the vertical glyph data associated with the
same character.
The vertical glyphs can be downloaded using the PCL
Character Definition Command using a character code =
0xFFFF.
A TrueType mort table typically contains a header of 76
bytes, followed by the vertical substitution array which
follows the segment format described here. However, the
mort table header is designed to be variable-length, and the
location of the vertical substitution data may be located
elsewhere in mort tables in future fonts.
If the Font Type is not Type 3 (16-bit fonts), this data
segment is ignored.
Printer-Specific Differences 2-41
Содержание PCL 5
Страница 8: ...Contents 4 ...
Страница 174: ...5 8 Memory Usage ...
Страница 198: ...A 24 Printer Commands ...
Страница 201: ...8U Roman 8 R8 7J DeskTop DT Internal Symbol Set Charts B 3 ...
Страница 202: ...0N ISO 8859 1 Latin 1 E1 19U Windows 3 1 Latin 1 W1 B 4 Internal Symbol Set Charts ...
Страница 203: ...12U PC 850 Multilingual PM 10U PC 8 Code Page 437 PC Internal Symbol Set Charts B 5 ...
Страница 204: ...12J MC Text MC 10J PS Text TS B 6 Internal Symbol Set Charts ...
Страница 205: ...11U PC 8 Danish Norwegian PD 13J Ventura International VI Internal Symbol Set Charts B 7 ...
Страница 206: ...1U Legal LG 14J Ventura US VU B 8 Internal Symbol Set Charts ...
Страница 207: ...6J Microsoft Publishing PG 9U Windows 3 0 Latin 1 WO Internal Symbol Set Charts B 9 ...
Страница 208: ...17U PC 852 Latin 2 PE 9T PC Turkish PT B 10 Internal Symbol Set Charts ...
Страница 209: ...9E Windows 3 1 Latin 2 WE 2N ISO 8859 2 Latin 2 E2 Internal Symbol Set Charts B 11 ...
Страница 210: ...5N ISO 8859 9 Latin 5 E5 5T Windows 3 1 Latin WT B 12 Internal Symbol Set Charts ...
Страница 211: ...9J PC 1004 Code Page 1004 PU 26U PC 775 Code Page 775 PV Internal Symbol Set Charts B 13 ...
Страница 212: ...19L Windows Baltic WL 6N ISO 8859 10 Latin 6 E6 B 14 Internal Symbol Set Charts ...
Страница 213: ...6M Ventura Math VM 8M Math 8 M8 Internal Symbol Set Charts B 15 ...
Страница 214: ...5M PS Math MS 15U Pi Font PI B 16 Internal Symbol Set Charts ...
Страница 215: ...19M Symbol Font AS 579L Wingdings Font L Internal Symbol Set Charts B 17 ...
Страница 216: ...9L Ventura ITC Zapf Dingbats DV 10L PS ITC Zapf Dingbats DS B 18 Internal Symbol Set Charts ...
Страница 217: ...11L ITC Zapf Dingbats series 100 D1 12L ITC Zapf Dingbats series 200 D2 Internal Symbol Set Charts B 19 ...
Страница 218: ...13L ITC Zapf Dingbats series 300 D3 B 20 Internal Symbol Set Charts ...
Страница 221: ...Table B 2 Roman 8 Character Conversion Internal Symbol Set Charts B 23 ...
Страница 222: ...Table B 2 Roman 8 Character Conversion continued B 24 Internal Symbol Set Charts ...
Страница 223: ...Table B 2 Roman 8 Character Conversion continued Internal Symbol Set Charts B 25 ...
Страница 224: ...Table B 2 Roman 8 Character Conversion continued B 26 Internal Symbol Set Charts ...
Страница 225: ...Table B 2 Roman 8 Character Conversion continued Internal Symbol Set Charts B 27 ...
Страница 226: ...Table B 2 Roman 8 Character Conversion continued B 28 Internal Symbol Set Charts ...
Страница 227: ...Table B 2 Roman 8 Character Conversion continued Internal Symbol Set Charts B 29 ...
Страница 228: ...B 30 Internal Symbol Set Charts ...
Страница 248: ...C 20 Symbol Set and Typeface Codes ...