The function uses Newton's iterations instead of dividing vector
components by its length, which needs a square root. This is,
literally, a bit less accurate but a lot faster.
* src/base/ftcalc.c (FT_Vector_NormLen): New function.
* builds/FindHarfBuzz.cmake: New file, taken from
https://trac.webkit.org/browser/trunk/Source/cmake/FindHarfBuzz.cmake
* CMakeLists.Txt: Add path to local cmake modules.
Find dependencies for zlib, bzip2, libpng, and harfbuzz.
Create `ftoption.h' file.
Set up include and linker stuff for libraries.
This change is a result of a discussion thread on freetype-devel
http://lists.nongnu.org/archive/html/freetype-devel/2015-06/msg00041.html
Re-introduce the `freetype2' subdirectory for all FreeType header
files after installation, and rename the `freetype2' subdirectory in
the git repository to `freetype'.
* include/freetype2: Renamed to...
* include/freetype: This.
* CMakeLists.txt (PUBLIC_HEADERS, PUBLIC_CONFIG_HEADERS,
PRIVATE_HEADERS): Updated.
Update creation of `ftconfig.h'.
Install generated `ftconfig.h'.
* Jamfile (HDRMACRO, RefDoc), autogen.sh: Updated.
* builds/amiga/include/config/ftconfig.h, builds/freetype.mk
(PUBLIC_DIR), builds/symbian/bld.inf, builds/toplevel.mk (work),
builds/unix/freetype2.in: Updated.
* builds/unix/freetype-config.in: Updated.
* builds/unix/configure.raw: Don't check for `rmdir'.
* builds/unix/unix-def.in (DELDIR): Use `rm -rf', which is portable
according to the autoconf info manual.
* builds/unix/install.mk (install, uninstall,
distclean_project_unix): Update and simplify.
* builds/wince/*, builds/windows/*: Updated.
* devel/ft2build.h, include/ft2build.h: Updated.
* include/freetype2/config/ftheader.h,
include/freetype2/internal/ftserv.h,
include/freetype2/internal/internal.h: Update all header file
macros.
* src/tools/chktrcmp.py (TRACE_DEF_FILES): Updated.
* docs/*: Updated.
* builds/unix/ftconfig.in, builds/vms/ftconfig.in,
include/freetype2/config/ftconfig.h,
include/freetype2/internal/ftobjs.h, src/autofit/afwarp.h: Do it.
We no longer `pollute' the namespace of possible header file names;
instead we move `ft2build.h' up by one level so that it gets
installed in the default include directory (e.g.,
/usr/local/include). After this commit, only `ft2build.h' stays in
the compiler's include path.
No visible changes for the user who follows the standard FreeType
header inclusion rules.
* include/*: Move to ...
* include/freetype2/*: This directory, except `ft2build.h'.
* CMakeLists.txt (PUBLIC_HEADERS, PUBLIC_CONFIG_HEADERS,
PRIVATE_HEADERS), Jamfile (HDRMACRO, RefDoc), autogen.sh: Updated.
* builds/amiga/include/config/ftconfig.h, builds/freetype.mk
(PUBLIC_DIR), builds/symbian/bld.inf, builds/toplevel.mk (work),
builds/unix/install.mk (install, uninstall),
builds/unix/freetype2.in: Updated.
* builds/unix/freetype-config.in: Updated.
Emit -I directory only if it is not `/usr/include'.
* builds/wince/*, builds/windows/*: Updated.
* devel/ft2build.h, include/ft2build.h: Updated.
* include/freetype2/config/ftheader.h,
include/freetype2/internal/ftserv.h,
include/freetype2/internal/internal.h: Update all header file
macros.
* src/tools/chktrcmp.py (TRACE_DEF_FILES): Updated.
* docs/*: Updated.
This is just very basic stuff and just a little bit tested on
GNU/Linux only. I won't delve into this since I'm not a Jam user.
* Jamfile: Call `HDRMACRO' for `ftserv.h' also.
(DEFINES): Replace with...
(CCFLAGS): ... this.
* src/Jamfile: Don't call `HDRMACRO' for `internal.h'; this is
already handled in the top-level Jamfile.
* src/autofit/Jamfile (DEFINES): Replace with...
(CCFLAGS): ... this.
(_sources): Add missing files.
* src/cache/Jamfile: Don't call `HDRMACRO' for `ftcache.h'; it no
longer contains macro header definitions.
* src/base/Jamfile, src/cff/Jamfile, src/sfnt/Jamfile,
src/truetype/Jamfile (_sources): Add missing files.
=======================
Tag sources with `VER-2-6'.
* docs/VERSION.DLL: Update documentation and bump version number to
2.6.
* README, Jamfile (RefDoc), builds/windows/vc2005/freetype.vcproj,
builds/windows/vc2005/index.html,
builds/windows/vc2008/freetype.vcproj,
builds/windows/vc2008/index.html,
builds/windows/vc2010/freetype.vcxproj,
builds/windows/vc2010/index.html,
builds/windows/visualc/freetype.dsp,
builds/windows/visualc/freetype.vcproj,
builds/windows/visualc/index.html,
builds/windows/visualce/freetype.dsp,
builds/windows/visualce/freetype.vcproj,
builds/windows/visualce/index.html,
builds/wince/vc2005-ce/freetype.vcproj,
builds/wince/vc2005-ce/index.html,
builds/wince/vc2008-ce/freetype.vcproj,
builds/wince/vc2008-ce/index.html: s/2.5.5/2.6/, s/255/26/.
* include/freetype/freetype.h (FREETYPE_MINOR): Set to 6.
(FREETYPE_PATCH): Set to 0.
* builds/unix/configure.raw (version_info): Set to 18:0:12.
* CMakeLists.txt (VERSION_MINOR): Set to 0.
(VERSION_PATCH): Set to 6.
* src/autofit/afmodule.c [!FT_MAKE_OPTION_SINGLE_OBJECT]: Add
declarations for dumping functions.
* src/truetype/ttinterp.c (TT_New_Context): Pacify compiler.
* builds/toplevel.mk: Use `freetype.mk's code to compute the version
string.
Don't include a zero patch level in version string.
* builds/freetype.mk: Remove code for computing the version string.
Problem reported by Grissiom <chaos.proton@gmail.com>; in
http://lists.nongnu.org/archive/html/freetype/2015-05/msg00013.html
there is an example code to trigger the bug.
* src/truetype/ttobjs.c (tt_size_init_bytecode): Free old `size'
data before allocating again. Bug most probably introduced four
years ago in version 2.4.3.
* src/truetype/ttinterp.c: Change all existing TRACE7 calls to
TRACE6.
(opcode_name): Add string lengths.
(TT_RunIns): Implement display of code position and stack.
This is completely missing in Apple's documentation: If a `gvar'
tuple uses private point numbers (this is, deltas are specified for
some points only), the uncovered points must be interpolated for
this tuple similar to the IUP bytecode instruction. Examples that
need this functionality are glyphs `Oslash' and `Q' in Skia.ttf.
* src/truetype/ttgxvar.c (tt_delta_shift, tt_delta_interpolate,
tt_handle_deltas): New functions.
(TT_Vary_Get_Glyph_Deltas): Renamed to...
(TT_Vary_Apply_Glyph_Deltas): ... this; it directly processes the
points and does no longer return an array of deltas.
Add tracing information.
Call `tt_handle_deltas' to interpolate missing deltas.
Also fix a minor memory leak in case of error.
* src/truetype/ttgxvar.h: Updated.
* src/truetype/ttgload.c (TT_Process_Simple_Glyph,
load_truetype_glyph): Updated.
* src/truetype/ttgload.c, src/truetype/ttinterp.c: Guard new code
with `TT_CONFIG_OPTION_SUBPIXEL_HINTING'.
Problem reported by Nikolaus Waxweiler <madigens@gmail.com>.
This flag activates `native ClearType hinting', disabling backwards
compatibility mode as described in Greg Hitchcocks whitepaper. In
other words, it enables unrestricted functionality of all TrueType
instructions in ClearType.
* src/truetype/ttgload.c (tt_get_metrics): Call `sph_set_tweaks'
unconditionally.
(tt_loader_init): Unset `ignore_x_mode' flag if bit 2 of
`GS.instruct_control' is active.
* src/truetype/ttinterp.c (Ins_INSTCTRL): Handle selector index 3.
(Ins_GETINFO): Updated.
* docs/CHANGES: Document it.
* src/truetype/ttgload.c (TT_Load_Composite_Glyph): If the
ARGS_ARE_XY_VALUES flag is not set, handle argument values as
unsigned. I trust `ttx' (which has exactly such code) that it does
the right thing here...
The reason that noone has ever noticed this bug is probably the fact
that point-aligned subglyphs are rare, as are subglyphs with a
number of points in the range [128;255], which is quite large (or
even in the range [32768;65535], which is extremely unlikely).
* src/cff/cf2intrp.c (cf2_interpT2CharString): The opcodes
`vvcurveto', `hhcurveto', `vhcurveto', and `hvcurveto' all iterate,
pulling values off the stack until the stack is exhausted.
Implicitly the stack must be a multiple (or for subtly different
behaviour) a multiple plus a specific number of extra values deep.
If that's not the case, enforce it (as the old code did).
* src/cff/cf2ft.c (cf2_getSeacComponent): When using the incremental
interface to retrieve glyph data for a SEAC, it be left to the
incremental interface callback to apply the encoding to raw
character index (as it was in the previous code).
This code replaces the debugging hook from the previous commit with
a better, more generic solution.
* include/ftautoh.h: Document it.
* src/autofit/afmodule.h (AF_ModuleRec)
[AF_CONFIG_OPTION_USE_WARPER]: Add `warping' field.
* src/autofit/afmodule.c (_af_debug_disable_warper): Remove.
(af_property_set, af_property_get, af_autofitter_init)
[AF_CONFIG_OPTION_USE_WARPER]: Handle `warping' option.
* src/autofit/afhints.h (AF_HINTS_DO_WARP): Remove use of the no
longer existing `_af_debug_disable_warper'.
* src/autofit/afcjk.c (af_cjk_hints_init), src/autofit/aflatin.c
(af_latin_hints_init), src/autofit/aflatin2.c (af_latin2_hints_init)
[AF_CONFIG_OPTION_USE_WARPER]: Add `AF_SCALER_FLAG_NO_WARPER' to the
scaler flags if warping is off.
* src/autofit/aftypes.h: Updated.
* src/autofit/afmodule.c (_af_debug_disable_warper)
[FT_DEBUG_AUTOFIT]: New global variable.
* src/autofit/aftypes.h: Updated.
(AF_SCALER_FLAG_NO_WARPER): New macro (not actively used yet).
* src/autofit/afhints.h (AF_HINTS_DO_WARP): New macro.
* src/autofi/aflatin.c (af_latin_hints_apply)
[AF_CONFIG_OPTION_USE_WARPER]: Use `AF_HINTS_DO_WARP' to control use
of warper.
* src/autofit/afcjk.c (af_cjk_hints_init, af_cjk_hints_apply)
[AF_CONFIG_OPTION_USE_WARPER]: Synchronize with `aflatin.c'.
* src/autofit/aflatin2.c (af_latin2_hints_apply)
[AF_CONFIG_OPTION_USE_WARPER]: Synchronize with `aflatin.c'.
Problem reported by Behdad.
* src/cff/cffdrivr.c (cff_get_advances): Handle SFNT case
separately.
* src/cff/cffgload.c (cff_slot_load): Use advance width and side
bearing values from `hmtx' table if present.
The interface to ftgrid was broken in the series of commits starting
with
[autofit] Allocate AF_Loader on the stack instead of AF_Module.
from 2015-01-14.
* src/autofit/afmodule.c (_af_debug_hints_rec) [FT_DEBUG_AUTOFIT]:
Use a global AF_GlyphHintsRec object for debugging.
(af_autofitter_done, af_autofitter_load_glyph): Updated.
* src/autofit/afloader.c (af_loader_init, af_loader_done): Updated.
Alexei Podtelezhnikov
Werner Lemberg
Ashish Azad
Chris Liddell