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- Apple II
- Technical Notes
- _____________________________________________________________________________
- Developer Technical Support
- Apple IIgs
- #67: LaserWriter Font Mapping
-
- Revised by: Matt Deatherage May 1992
- Written by: Suki Lee & Jim Luther September 1989
-
- This Technical Note discusses the methods used by the Apple IIgs Print Manager
- to map IIgs fonts to the PostScript(R) fonts available with an Apple
- LaserWriter printer.
-
- CHANGES SINCE NOVEMBER 1989: Corrected some typographical errors and added
- Carta and Sonata, two fonts the LaserWriter driver knows about but aren't
- built into any LaserWriter.
- _____________________________________________________________________________
-
-
- Version 2.2 and earlier of the Apple IIgs LaserWriter driver depend solely
- upon font family numbers as unique font identifiers. There is a table built
- into the driver which maps the known font family numbers to the built-in
- LaserWriter family fonts. Any fonts which are not built-in are created in the
- printer from its bitmap font strike. Under this implementation, all font
- family numbers not known at the time the driver was written print using bitmap
- fonts. This driver knows nothing of any other fonts which may reside in the
- printer.
-
- There have been many requests for the driver to take advantage of other
- available PostScript fonts to get high quality output from the LaserWriter.
- PostScript fonts from Adobe's font library, or from other PostScript font
- manufacturers, can be downloaded to the printer from a Macintosh and remain in
- the printer for use until power off. Currently there is no means to download
- a PostScript font with an Apple IIgs.
-
- The Apple IIgs LaserWriter driver version 3.0 and later makes use of most
- resident PostScript fonts in the LaserWriter when requested. If the font is
- not available, then the bitmap font is used. The driver queries the printer
- at the start of a job for the font directory listing. The listing consists of
- names of all the fonts in the printer, built-in or downloaded. This
- information is kept locally for look up using the name of the requested font.
-
-
- ISSUES
-
- All Apple IIgs fonts contain a family name and a family number. The Apple
- IIgs currently identifies fonts using the family number; however, this
- identification method may change in the future, due to the complexity of
- tracking unique matches between font family names and font family numbers.
-
- PostScript identifies its fonts by name (case sensitive) and knows nothing of
- any font family numbering system, Macintosh or Apple IIgs, which might be
- attached to a particular font. Most PostScript font families include plain,
- bold, italic and bold italic fonts. Some fonts families may also have serif
- and sans serif fonts or fonts of different weights (line thickness). These
- fonts are generally named by adding a style suffix to the base family name.
- Unfortunately, there is no uniform method for naming fonts, since most fonts
- were named by their designers and many of the names have historical
- significance.
- The three examples shown in Table 1 show three variations of the plain font,
- two variations of the bold style, three variations of the italic style, and
- three variations of the bold italic style. There are others such as
- ZapfChancery-MediumItalic, Korinna-KursivRegular, and LetterGothic-Slanted
- which all denote the italic style of the respective font family.
-
- Style Font names
- -----------------------------------------------------------------------------
- plain Helvetica Times-Roman AvantGarde-Book
- bold Helvetica-Bold Times-Bold AvantGarde-Demi
- italic Helvetica-Oblique Times-Italic AvantGarde-BookOblique
- bold italic Helvetica-BoldOblique Times-BoldItalic AvantGarde-DemiOblique
- -----------------------------------------------------------------------------
- Table 1-Example Font Names
-
- The Macintosh LaserWriter driver uses a mapping scheme to compose a full
- PostScript font name. It relies on the Font Family Definition Record 'FOND'
- resource to provide a style mapping table containing the appropriate suffixes.
-
- There are no similar resources on the Apple IIgs, which means the Apple IIgs
- LaserWriter driver has no way to match PostScript fonts to Apple IIgs fonts.
- Instead, the Apple IIgs LaserWriter driver adopts the following approach. The
- driver has full knowledge of all LaserWriter family built-in fonts (see Table
- 2 for a list of these built-in fonts) plus Carta and Sonata (two graphical
- fonts used in map and music programs) and uses the correct name for all style
- variations of the fonts. For all other fonts, the driver uses a standard set
- of suffixes for the style modifications. These suffixes are -Bold, -Italic,
- and -BoldItalic. The appropriate suffix is appended to the family name of the
- font, and this name is used to search the font directory table obtained from
- querying the printer. If a match is found, the document is printed using the
- corresponding PostScript font. If no match is found, then the driver tries to
- find the plain form of the font and creates the style modification in
- PostScript. A bitmap of the font is downloaded to the printer if these two
- searches fail.
-
- If you are shipping your application with the intention of taking advantage of
- PostScript fonts when printing to a LaserWriter, please be sure to provide an
- Apple IIgs font whose family name is identical to the PostScript font family
- name.
-
- All LaserWriters LaserWriter Plus and LaserWriter II
- ---------------------------------------------------------------
- Courier AvantGarde Palatino
- Carta Bookman Symbol
- Helvetica Courier Times
- Sonata Helvetica ZapfChancery
- Symbol Helvetica-Narrow ZapfDingbats
- Times NewCenturySchlbk
- ---------------------------------------------------------------
- Table 2-Built-in LaserWriter Fonts
-
-
- Further Reference
- _____________________________________________________________________________
-
- o Apple IIgs Toolbox Reference, Volumes 1 & 2
- o Apple LaserWriter Reference
-
- Carta is a trademark of Adobe Systems Incorporated.
-
- PostScript and Sonata are registered trademarks of Adobe Systems Incorporated.
-
- Helvetica(R), Palatino(R), and Times(R) are registered trademarks of Linotype
- Co.
-
- ITC Avant Garde(R), ITC Bookman(R), ITC Zapf Chancery(R), and ITC Zapf
- Dingbats(R) are registered trademarks of International Typeface Corporation.
-
-
-
-