CHANGES BETWEEN 2.8.1 and 2.9
I. IMPORTANT BUG FIXES
- Advance width values of variation fonts were often wrong.
- More fixes for variation font support; you should update to this
version if you want to support them.
II. IMPORTANT CHANGES
- As a GSoC project, Ewald Hew extended the new (Adobe) CFF engine
to handle Type 1 fonts also, thus greatly improving the
rendering of this format. This is the new default. The old
engine is still available if the configuration macro
`T1_CONFIG_OPTION_OLD_ENGINE' gets defined; using the
`hinting-engine' property of the `type1' driver module you can
then switch between the two engines.
- A new function, `FT_Set_Named_Instance', can be used to set or
change the current named instance.
- Starting with this FreeType version, resetting variation
coordinates will return to the currently selected named
instance. Previously, FreeType returned to the base font (i.e.,
no instance set).
III. MISCELLANEOUS
- The `face_flags' field of the `FT_Face' structure has a new bit,
`FT_FACE_FLAG_VARIATION', which is set if a variation font has
been altered with `FT_Set_MM_Design_Coordinates',
`FT_Set_Var_Design_Coordinates', or
`FT_Set_Var_Blend_Coordinates'.
- If the current face is a named instance, the new macro
`FT_IS_NAMED_INSTANCE' returns true.
- `FT_IS_VARIATION' is a new macro that returns true whenever a
face object has been altered by `FT_Set_MM_Design_Coordinates',
`FT_Set_Var_Design_Coordinates', or
`FT_Set_Var_Blend_Coordinates'.
- Changing the design coordinates of a variation font with
`FT_Set_Var_Design_Coordinates' or
`FT_Set_Var_Blend_Coordinates' does not influence the named
instance index value (only `FT_Set_Named_Instance' does that).
- Special PostScript names for named instances are only returned
if the named instance is set with `FT_Set_Named_Instance' (and
the font has corresponding entries in its `fvar' table). If
`FT_IS_VARIATION' returns true, the algorithmically derived
PostScript name is provided, not looking up special entries for
named instances.
- A new function `FT_Done_MM_Var' is provided to free the memory
returned in a call to `FT_Get_MM_Var'.
- On platforms using the `configure' script, the installed
`ftoption.h' file now correctly reflects configuration options
like `--with-harfbuzz'.
- Better support to build FreeType as a DLL on Windows using
Visual C.
- All data specific to driver modules is now collected in a single
file, `FT_DRIVER_H'. Consequently, the macros
`FT_AUTOHINTER_H', `FT_CFF_DRIVER_H', `FT_TRUETYPE_DRIVER_H',
and `FT_PCF_DRIVER_H' still work but are deprecated.
- Some fuzzer fixes to better reject malformed fonts.
- The `ftbench' demo program has a new test for opening a new face
and loading some glyphs.
- The `ftbench' demo program has a new option `-j' to specify the
last glyph index to be used in the tests.
- The `ftgrid' demo program has a new option `-n' to suppress
display of named instances of variation fonts.
- The `ttdebug' demo program can now show a stack trace (key `K')
and switch between hexadecimal and decimal display of integers
(key `I').
