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Les deux révisions précédentesRévision précédenteProchaine révision | Révision précédente | ||
fichiers:fontes:formats_de_polices_adobe [2018/05/25 21:20] – joseph.wright | 5_fichiers:fontes:formats_de_polices_adobe [2021/05/27 11:46] (Version actuelle) – Remise en forme mineure. Mise à jour de liens internes. jejust | ||
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Ligne 1: | Ligne 1: | ||
- | --- | + | ====== |
- | title: | + | |
- | category: concepts | + | |
- | permalink: / | + | |
- | date: 2014-06-10 | + | |
- | --- | + | |
- | # Adobe font formats | ||
Adobe has specified a number of formats for files to represent fonts | Adobe has specified a number of formats for files to represent fonts | ||
in PostScript files; this question doesn' | in PostScript files; this question doesn' | ||
we only discuss the two formats most commonly encountered in the | we only discuss the two formats most commonly encountered in the | ||
- | (La)TeX context, types 1 and 3. In particular, we don't discuss the | + | (La)TeX context, types(nbsp)1 and 3. In particular, we don't discuss the |
OpenType format, whose many advantages now becoming accessible to most | OpenType format, whose many advantages now becoming accessible to most | ||
- | (La)TeX users (by means of | + | (La)TeX users (by means of the widely-used [[1_generalites: |
- | | + | and the more experimental [[1_generalites: |
- | | + | |
- | Adobe Type 1 format specifies a means to represent outlines of the glyphs | + | Adobe Type 1 format specifies a means to represent outlines of the glyphs |
- | in a font. The '' | + | in a font. The "language" |
the font is rendered as quickly as possible. | the font is rendered as quickly as possible. | ||
as possible with Adobe' | as possible with Adobe' | ||
Ligne 25: | Ligne 18: | ||
business, though nowadays most new fonts are released in OpenType format. | business, though nowadays most new fonts are released in OpenType format. | ||
- | In the (La)TeX context, Type 1 fonts are extremely important. | + | In the (La)TeX context, Type 1 fonts are extremely important. |
- | from their simple | + | from their simple availability (there are thousands of commercial Type(nbsp)1 |
- | availability (there are thousands of commercial Type 1 text fonts around), the | + | text fonts around), the commonest reader for PDF files has long (in effect) |
- | commonest reader for PDF files has long (in effect) | + | |
their use (see below). | their use (see below). | ||
- | Type 3 fonts have a more forgiving specification. | + | Type 3 fonts have a more forgiving specification. |
- | PostScript operators is permissible, | + | PostScript operators is permissible, |
is therefore the natural format to be used for programs such as | is therefore the natural format to be used for programs such as | ||
- | `dvips` when they auto-generate something to represent | + | '' |
MetaFont-generated fonts in a PostScript file. It's Adobe Acrobat Viewer' | MetaFont-generated fonts in a PostScript file. It's Adobe Acrobat Viewer' | ||
- | treatment of bitmap Type 3 fonts that has made direct MetaFont output | + | treatment of bitmap Type(nbsp)3 fonts that has made direct MetaFont output |
- | increasingly unattractive, | + | increasingly unattractive, |
- | document in which the text looks fuzzy and uneven in Acrobat Reader, | + | in which the text looks fuzzy and uneven in Acrobat Reader, ask Reader for the |
- | ask Reader for the `File`& | + | '' |
- | `Document Properties`& | + | and it will likely show some font or other as "Type(nbsp)3" |
- | `Fonts ...`, and it will likely show some font or other as | + | The problem has disappeared with version 6 of Acrobat Reader. |
- | '' | + | See [[5_fichiers: |
- | disappeared with version 6 of Acrobat Reader. | + | for a discussion of the issue, and for ways of addressing it. |
- | [PDF quality](/ | + | |
- | the issue, and for ways of addressing it. | + | |
- | Type 3 fonts should not entirely be dismissed, however. | + | Type 3 fonts should not entirely be dismissed, however. |
Reader' | Reader' | ||
the anti-aliasing techniques common in TeX-ware. | the anti-aliasing techniques common in TeX-ware. | ||
different set of PostScript graphical operators, and you can make pleasing | different set of PostScript graphical operators, and you can make pleasing | ||
- | Type 3 fonts that don' | + | Type 3 fonts that don' |
- | change color within a Type 1 font glyph, but there' | + | change color within a Type 1 font glyph, but there' |
- | restriction on a Type 3 font, which opens opportunities for some | + | restriction on a Type 3 font, which opens opportunities for some |
startling effects. | startling effects. | ||
+ | |||
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