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[ft] FreeType version 2.2.1 released
[ft] FreeType version 2.2.1 released
Sat, 13 May 2006 02:55:56 +0200 (CEST)
FreeType 2.2.1 has been released.
It is available from
The latter site also holds older versions of the FreeType library.
See below for the relevant snippet from the CHANGES file.
FreeType 2 is a software font engine that is designed to be small,
efficient, highly customizable, and portable while capable of
producing high-quality output (glyph images) of most vector and bitmap
Note that FreeType 2 is a font service and doesn't provide APIs to
perform higher-level features, like text layout or graphics processing
(e.g., colored text rendering, `hollowing', etc.). However, it
greatly simplifies these tasks by providing a simple, easy to use, and
uniform interface to access the content of font files.
FreeType 2 is released under two open-source licenses: our own
BSD-like FreeType License and the GPL. It can thus be used by any
kind of projects, be they proprietary or not.
CHANGES BETWEEN 2.2.1 and 2.2
I. IMPORTANT BUG FIXES
- Various integer overflows have been fixed.
- PFB fonts with MacOS resource fork weren't handled correctly on
CHANGES BETWEEN 2.2 and 2.1.10
(not released officially)
I. IMPORTANT BUG FIXES
- Vertical metrics for SFNT fonts were incorrect sometimes.
- The FT_HAS_KERNING macro always returned 0.
- CFF OpenType fonts didn't return correct vertical metrics for
glyphs with outlines.
- If FreeType was compiled without hinters, all font formats based
on PS outlines weren't scaled correctly.
II. IMPORTANT CHANGES
- Version 2.2 no longer exposes its internals, this is, the header
files located in the `include/freetype/internal' directory of
the source package are not copied anymore by the `make install'
command. Consequently, a number of rogue clients which directly
access FreeType's internal functions and structures won't
compile without modification.
We provide patches for most of those rogue clients. See the
following page for more information:
Note that, as a convenience to our Unix desktop users, version
2.2 is *binary* compatible with FreeType 2.1.7, which means that
installing this release on an existing distribution shall not
break any working desktop.
- FreeType's build mechanism has been redesigned. With GNU make
it is now sufficient in most cases to edit two files:
`modules.cfg', to select the library components, and the
configuration file `include/freetype/config/ftoption.h' (which
can be copied to the objects directory). Removing unused module
directories to prevent its compilation and editing
`include/freetype/config/ftmodule.h' is no longer necessary.
- The LIGHT hinting algorithm produces more pleasant results.
Also, using the FT_LOAD_TARGET_LIGHT flags within FT_Load_Glyph
always forces auto-hinting, as a special exception. This allows
you to experiment with it even if you have enabled the TrueType
bytecode interpreter in your build.
- The auto hinter now employs a new algorithm for CJK fonts, based
on Akito Hirai's patch. Note that this only works for fonts
with a Unicode charmap at the moment.
- The following callback function types have changed slightly (by
adding the `const' keyword where appropriate):
Note that this doesn't affect binary backward compatibility.
- On MacOS, new APIs have been added as replacements for legacy
APIs: `FT_New_Face_From_FSRef' for `FT_New_Face_From_FSSpec',
and `FT_GetFile_From_Mac_ATS_Name' for
`FT_GetFile_From_Mac_Name'. Legacy APIs are still available, if
FreeType is built without disabling them.
- A new API `FT_Select_Size' has been added to select a bitmap
strike by its index. Code using other functions to select
bitmap strikes should be updated to use this function.
- A new API `FT_Get_SubGlyph_Info' has been added to retrieve
subglyph data. This can be used by rogue clients which used to
access the internal headers to get the corresponding data.
- In 2.1.10, the behaviour of `FT_Set_Pixel_Sizes' was changed for
BDF/PCF fonts, and only for them. This causes inconsistency.
In this release, we undo the change. The intent of the change
in 2.1.10 is to allow size selection through real dimensions,
which can now be done through `FT_Request_Size'.
- Some security issues were discovered and fixed in the CFF and
Type 1 loader, causing crashes of FreeType by malformed font
- The documentation for FT_LOAD_TARGET_XXX and FT_RENDER_MODE_XXX
values now better reflects its usage and differences: One set is
used to specify the hinting algorithm, the other to specify the
pixel rendering mode.
- FT_New_Face() and FT_New_Face_From_FSSpec() in ftmac.c have been
changed to count supported scalable faces (sfnt, LWFN) only, and
to return the number of available faces via face->num_faces.
Unsupported bitmap faces (fbit, NFNT) are ignored.
- builds/unix/configure has been improved for MacOS X. It now
automatically checks available functions in Carbon library, and
prepare to use newest functions by default. Options to specify
the dependencies of each Carbon APIs (FSSpec, FSRef, old/new
QuickDraw, ATS) are available too. By manual disabling of all
QuickDraw functionality, FreeType can be built without
`deprecated function' warnings on MacOS 10.4.x, but
FT_GetFile_Mac_Name in ftmac.c then is changed to a dummy
function, and returns an `unimplemented' error. For details see
- SFNT cmap handling has been improved, mainly to run much faster
with CJK fonts.
- A new function `FT_Get_TrueType_Engine_Type (declared in
`FT_MODULE_H') is provided to determine the status of the
TrueType bytecode interpreter compiled into the library
(patented, unpatented, unimplemented).
- Vertical metrics of glyphs are synthesized if the font does not
provide such information. You can tell whether the metrics are
synthesized or not by checking the FT_FACE_FLAG_VERTICAL flag of
- The demo programs `ftview' and `ftstring' have been rewritten
for better readability. `ftview' has a new switch `-p' to test
FT_New_Memory_Face (instead of FT_New_Face).
- FreeType now honours bit 1 in the `head' table of TrueType fonts
(meaning `left sidebearing point at x=0'). This helps with some
- Rudimentary support for Adobe's new `SING Glyphlet' format. See
for more information.
- The `ftdump' program from the `ft2demos' bundle now shows some
information about charmaps. It also supports a new switch `-v'
to increase verbosity.
- Better AFM support. This includes track kerning support.
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