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include/freetype/freetype.h (FT_Encoding): Improve documentation. 

Based on a suggestion by Antony Lee <anntzer.lee@gmail.com>.
This commit is contained in:
Werner Lemberg 2021-08-08 00:22:34 +02:00
parent 18fc64e6a3
commit 2c853b38a7
1 changed files with 10 additions and 5 deletions
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15
include/freetype/freetype.h
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@ -730,11 +730,16 @@ FT_BEGIN_HEADER
* Same as FT_ENCODING_JOHAB. Deprecated.
*
* @note:
* By default, FreeType enables a Unicode charmap and tags it with
* `FT_ENCODING_UNICODE` when it is either provided or can be generated
* from PostScript glyph name dictionaries in the font file. All other
* encodings are considered legacy and tagged only if explicitly defined
* in the font file. Otherwise, `FT_ENCODING_NONE` is used.
* When loading a font, FreeType makes a Unicode charmap active if
* possible (either if the font provides such a charmap, or if FreeType
* can synthesize one from PostScript glyph name dictionaries; in either
* case, the charmap is tagged with `FT_ENCODING_UNICODE`). If such a
* charmap is synthesized, it is placed at the first position of the
* charmap array.
*
* All other encodings are considered legacy and tagged only if
* explicitly defined in the font file. Otherwise, `FT_ENCODING_NONE` is
* used.
*
* `FT_ENCODING_NONE` is set by the BDF and PCF drivers if the charmap is
* neither Unicode nor ISO-8859-1 (otherwise it is set to