Commit Graph

3054 Commits

Author SHA1 Message Date
Werner Lemberg
955f6a86a3 [autofit] Improve tracing message for extra light flag.
* src/autofit/aflatin.c (af_latin_metrics_scale_dim): Do it.
2013-10-16 19:47:57 +02:00
Chongyu Zhu
41632b58ef [arm] Fix thumb2 inline assembly under LLVM.
When using `ADD' with an immediate operand, the instruction is
actually `ADD Rd, Rn, #<imm12>', that is, the maximum of the
immediate operand cannot exceed 4095.  It will fail to compile with
LLVM.

However, in GCC, due to some legacy compatibility considerations,
`ADD.W' will be automatically emitted when the immediate operand is
larger than 4095.

* builds/unix/ftconfig.in, include/freetype/config/ftconfig.h
(FT_MulFix_arm) [__GNUC__]: Support clang compiler.

* src/truetype/ttinterp.c (TT_MulFix14_arm) [__GNUC__]: Ditto.
2013-10-15 11:40:34 +02:00
Werner Lemberg
b6695243b7 [autofit] Improve tracing of `latin' hinter.
* src/autofit/aflatin.c (af_latin_metrics_init_blues): Report blue
zone types.
(af_latin_metrics_scale_dim): Report scaling changes due to x height
alignment.
Report scaled stroke width and blue zone values.
2013-10-12 10:33:04 +02:00
Dave Arnold
e845a85ea5 * src/cff/cf2font.c (cf2_computeDarkening): Avoid division by zero. 2013-10-03 23:04:29 +02:00
Darrell Bellert
01af71d42f * src/sfnt/ttload.c (tt_face_load_pclt): Fix `pclt_fields'. 2013-10-02 22:04:07 +02:00
Dave Arnold
0b33045285 * src/cff/cf2font.c (cf2_computeDarkening): Initialize darkenAmount.
This line was lost in commit 89ca1fd6 (from 2013-06-25).  The effect
is to use a previous darkening amount when producing an unhinted,
unscaled outline.  This can cause autohint samples in ftgrid and
ftview to be based on darkened CFF outlines instead of unhinted,
undarkened ones.
2013-10-02 11:04:06 +02:00
Dave Arnold
3a2cb0f881 Fix Savannah bug #39295.
The bug was caused by switching to the initial hintmap (the one in
effect when `moveto' executes) just before drawing the final element
in the charstring.  This ensured that the path was closed (in both
Character Space and Device Space).  But if the final element was a
curve and if the final hintmap was different enough from the initial
one, then the curve was visibly distorted.

The first part of the fix is to draw the final curve using the final
hintmap as specified by the charstring.  This corrects the
distortion but does not ensure closing in Device Space.  It may
require the rasterizer to automatically generate an extra closing
line.  Depending on the hintmap differences, this line could be from
zero to a couple pixels in length.

The second part of the fix covers the case where the charstring
subpath is closed with an explicit line.  We now modify that line's
end point to avoid the distortion.

Some glyphs in the bug report font (TexGyreHeros-Regular) that show
the change are:

  25ppem    S (98)
  24ppem    eight (52)
  25.5ppem  p (85)

Curves at the *end* of a subpath are no longer distorted.  However,
some of these glyphs have bad hint substitutions in the middle of a
subpath, and these are not affected.

The patch has been tested with a set of 106 fonts that shipped with
Adobe Creative Suite 4, together with 756 Open Source CFF fonts from
Google Fonts.  There are 1.5 million glyphs, of which some 20k are
changed with the fix.  A sampling of a few hundred of these changes
have been examined more closely, and the changes look good (or at
least acceptable).

* src/cff/cf2hints.h (CF2_GlyphPathRec): New element `pathIsClosing'
to indicate that we synthesize a closepath line.

* src/cff/cf2hints.c (cf2_glyphpath_init): Updated.
(cf2_glyphpath_pushPrevElem): If closing, use first hint map (for
`lineto' operator) and adjust hint zone.
For synthesized closing lines, use end point in first hint zone.
(cf2_glyphpath_lineTo): Take care of synthesized closing lines.  In
particular, shift the detection of zero-length lines from character
space to device space.
(cf2_glyphpath_closeOpenPath): Remove assertion.
Updated.
2013-09-29 16:17:02 +02:00
Werner Lemberg
4f9760e752 [autofit] Remove outdated comment. 2013-09-25 23:32:25 +02:00
Werner Lemberg
b75a8b8817 * src/autofit/aflatin.c (af_{grek,cyrl}_uniranges): Fix arrays. 2013-09-25 09:46:36 +02:00
suzuki toshiya
ac0f4454f7 [bdf, pcf] Refuse non-zero face_index.
Suggested by Akira Tagoh, see

  http://lists.gnu.org/archive/html/freetype/2013-09/msg00030.html

* src/bdf/bdfdrivr.c (BDF_Face_Init): Return Invalid_Argument error
when the font could be opened but non-zero face_index is given.
* src/pcf/pcfdrivr.c (PCF_Face_Init): Ditto.

* src/type42/t42objs.c (T42_Face_Init): Remove unrequired FT_UNUSED
macro for face_index because it is validated in later.
2013-09-25 10:57:17 +09:00
Werner Lemberg
4de7787f22 Fix Savannah bug #40090.
* src/autofit/afcjk.c (af_cjk_metrics_scale): Revert commit
306f8c5d (from 2013-08-25) affecting this function.
2013-09-23 22:10:08 +02:00
Werner Lemberg
5a4c5a5b23 [autofit] Disunify Cyrillic and Greek handling from Latin.
* src/autofit/afscript.h: Add Cyrillic and Greek.

* src/autofit/afblue.dat (AF_BLUE_STRINGSET_GREK,
AF_BLUE_STRINGSET_CYRL): Add blue zones for Greek and Cyrillic.
(AF_BLUE_STRINGSET_LATN): Fix typo.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/aflatin.c (af_grek_uniranges, af_cyrl_uniranges): New
arrays.
(af_grek_script_class, af_cyrl_script_class): New scripts.
* src/autofit/aflatin.h: Updated.
2013-09-22 22:37:26 +02:00
Behdad Esfahbod
31e726d939 Fix vertical size of emboldened glyphs.
Cf. https://bugzilla.gnome.org/show_bug.cgi?id=686709

* src/base/ftsynth.c (FT_GlyphSlot_Embolden): Adjust `horiBearingY'
also.
2013-09-20 07:20:53 +02:00
Werner Lemberg
3f542498b2 [autofit] Improve Hebrew rendering.
This change introduces a new blue zone property
`AF_BLUE_PROPERTY_LATIN_LONG' to make the auto-hinter ignore short
top segments.

* src/autofit/afblue.dat: Fix Hebrew blue strings.
Use AF_BLUE_PROPERTY_LATIN_LONG for AF_BLUE_STRING_HEBREW_TOP.

* src/autofit/afblue.hin (AF_BLUE_PROPERTY_LATIN_LONG): New macro.

* src/autofit/afblue.c, src/autofit/afblue.h: Updated.

* src/autofit/aflatin.c (af_latin_metrics_init_blues): Handle
`AF_LATIN_IS_LONG_BLUE'.

* src/autofit/aflatin.h (AF_LATIN_IS_LONG_BLUE): New macro.
2013-09-11 23:08:31 +02:00
Werner Lemberg
85a7fdf3c6 [sfnt] Fix frame access while reading WOFF table directory.
* src/sfnt/sfobjs.c (woff_open_font): Using single memory frame
while reading the directory entries for the whole loop.
2013-08-29 21:03:05 +02:00
Werner Lemberg
d689d1cf78 Implement support for WOFF containers.
We simply synthesize a SFNT from the WOFF, create a memory stream
for the new data, and load the SFNT as usual.

Does NOT add any API to access WOFF metadata or private blocks.

* include/freetype/internal/tttypes.h (WOFF_HeaderRec,
WOFF_TableRec): New structures.

* include/freetype/tttags.h (TTAG_wOFF): New macro.

* src/base/ftobjs.c (FT_Open_Face): Set `stream' after calling
`open_face'.

* src/sfnt/sfobjs.c [FT_CONFIG_OPTION_SYSTEM_ZLIB]: Include
`FT_GZIP_H'.
(WRITE_BYTE, WRITE_USHORT, WRITE_ULONG): New temporary macros for
writing to a stream.
(sfnt_stream_close, compare_offsets, woff_open_font): New functions.
(sfnt_open_font): Handle `TTAG_wOFF'.
(sfnt_init_face): Set `stream' after calling `sfnt_open_font'.

* src/truetype/ttobjs.c (tt_face_init): Set `stream' after calling
`sfnt->init_face'.

* src/base/ftobjs.c (open_face): Use a pointer to FT_Stream as an
argument so that a changed stream survives.
Update callers.
2013-08-29 17:53:40 +02:00
Werner Lemberg
dc240524ff [gzip] New function `FT_Gzip_Uncompress'.
This is modeled after zlib's `uncompress' function.  We need this
for WOFF support.

* include/freetype/ftgzip.h, src/gzip/ftgzip.c (FT_Gzip_Uncompress):
New function.

* src/gzip/rules.mk: Rewrite to better reflect dependencies.
2013-08-29 17:53:24 +02:00
Werner Lemberg
5195ecd62f [autofit] Fix `make multi' compilation.
* src/autofit/afblue.cin, src/autofit/afblue.c: Don't include
`afblue.h' but `aftypes.h'.
* src/autofit/afcjk.c: Don't include `aftypes.h' but `afglobal.h'.
2013-08-28 17:41:21 +02:00
Werner Lemberg
e0f39aefde [autofit] Fix C++ compilation.
* src/autofit/afglobal.c (af_face_globals_get_metrics),
src/autofit/afdummy.c (af_dflt_script_class), src/autofit/afindic.c
(af_deva_script_class): Use proper casts.
2013-08-28 17:34:01 +02:00
Behdad Esfahbod
c799dd6725 * src/sfnt/ttload.c (tt_face_load_font_dir): Fix sign typos. 2013-08-27 21:46:03 +02:00
Behdad Esfahbod
bd3849e7de FT_Open_Face: Improve external stream handling.
If the font's `clazz->init_face' function wants to swap to new
stream, handling of whether original stream was external could
result to either memory leak or double free.  Mark externality into
face flags before calling `init_face' such that the clazz can handle
external streams properly.

* src/base/ftobjs.c (FT_Open_Face): Move code to set
FT_FACE_FLAG_EXTERNAL_STREAM to...
(open_face): This function.
2013-08-27 21:43:38 +02:00
Werner Lemberg
bcd8c0b0eb Remove `FT_SqrtFixed' function.
It's no longer used.

* include/freetype/internal/ftcalc.h, src/base/ftcalc.c: Do it.
2013-08-27 21:36:03 +02:00
Werner Lemberg
71c0ad6520 Whitespace. 2013-08-27 21:30:09 +02:00
Werner Lemberg
5e53db25ff [autofit] While tracing, report script names instead of ID values.
* src/autofit/afglobal.c (af_script_names) [FT_DEBUG_LEVEL_TRACE]:
New array.
* src/autofit/afglobal.h: Updated.

* src/autofit/afcjk.c (af_cjk_metrics_init_widths,
af_cjk_hint_edges): Use `af_script_names'.
* src/autofit/aflatin.c (af_latin_metrics_init_widths,
af_latin_hint_edges): Ditto.
2013-08-27 18:37:39 +02:00
Werner Lemberg
278f64b330 [autofit] Report used script while hinting a glyph.
* src/autofit/afcjk.c (af_cjk_hint_edges), src/autofit/aflatin.c
(af_latin_hint_edges): Implement it.
2013-08-26 20:20:03 +02:00
Werner Lemberg
371f5c3b9d [autofit] Add support for Hebrew script.
* src/autofit/afblue.dat: Add blue strings for Hebrew.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/aflatin.c (af_hebr_uniranges): New array.
(af_hebr_script_class): New script.
* src/autofit/aflatin.h, src/autofit/afscript.h: Updated.
2013-08-26 20:11:24 +02:00
Werner Lemberg
098121dbb9 [autofit] Improve tracing messages.
* src/autofit/afcjk.c (af_cjk_metrics_init_widths): Mention script
ID in tracing message.
(af_cjk_metrics_init_blues): Initialize `axis' outside of the inner
loop.
Improve tracing messages.
(af_cjk_hint_edges) [FT_DEBUG_LEVEL_TRACE]: New variable
`num_actions' to count hinting actions.
Improve tracing messages.

* src/autofit/aflatin.c (af_latin_metrics_init_widths): Mention
script ID in tracing message.
(af_latin_metrics_init_blues, af_latin_hint_edges): Improve tracing
messages.
2013-08-26 18:54:05 +02:00
Werner Lemberg
ffee64afb8 Better tracing of loaded glyphs.
Previously, the loading of a glyph was traced at level 4, if at all.
With this change, all font loading routines emit a tracing message
at level 1, making it easier to select tracing output (for example
using F2_DEBUG="any:1 afhints:7 aflatin:7").

* src/bdf/bdfdrivr.c (BDF_Glyph_Load): Add tracing message.
* src/cff/cffdrivr.c (cff_glyph_load): Ditto.
* src/cff/cffgload.c (cff_decoder_prepare): Improve tracing
messages.
* src/cid/cidgload.c (cid_load_glyph): Use level 1 for tracing
message.
* src/pcf/pcfdrivr.c (PCF_Glyph_Load): Ditto.
* src/pfr/pfrobjs.c (pfr_slot_load): Add tracing message.
* src/truetype/ttgload.c (TT_Load_Glyph): Ditto.
* src/type1/t1gload.c (T1_Load_Glyph): Ditto.
* src/type42/t42objs.c (T42_GlyphSlot_Load): Ditto.
* src/winfonts/winfnt.c (FNT_Load_Glyph): Ditto.
2013-08-26 12:55:48 +02:00
Werner Lemberg
33655a9647 [autofit] Fix script selection.
* src/autofit/afglobal.c (af_face_globals_get_metrics): Use
`AF_SCRIPT_DFLT', not value 0.
Simplify code.

* src/autofit/afscript.h: Sort by script name.
2013-08-26 09:58:50 +02:00
Werner Lemberg
92f5a047c9 [autofit] Make `dummy' hinter work as expected.
* src/autofit/afdummy.c (af_dummy_hints_init): Properly set scaling
information.
(af_dummy_hints_apply): Scale the glyphs.
2013-08-26 09:22:27 +02:00
Werner Lemberg
c1eb445965 [autofit] Make `cjk' module use blue stringsets.
* src/autofit/afcjk.c (AF_CJK_MAX_TEST_CHARACTERS): Removed.
(af_cjk_hani_blue_chars): Removed.
(AF_CJK_BLUE_TYPE_*): Removed.
(af_cjk_metrics_init_blues): Replace AF_CJK_MAX_TEST_CHARACTERS with
AF_BLUE_STRING_MAX_LEN.
Change loops to use offsets (in file `afblue.h') into the new arrays
`af_blue_stringsets' and `af_blue_strings' (in file `afblue.c').
Instead of three dimensions (as used in the old blue string array)
we now use properties to do the same, saving one loop nesting level.

* src/autofit/afcjk.h: Remove old enumeration values superseded by
the new data in `afblue.h'.
(AF_CJK_IS_TOP_BLUE, AF_CJK_IS_HORIZ_BLUE, AF_CJK_IS_FILLED_BLUE,
AF_CJK_IS_RIGHT_BLUE): New macros, to be used in
`af_cjk_metrics_init_blues'.
(AF_CJK_BLUE_IS_RIGHT): Remove this now redundant enum value.
(AF_CJK_BLUE_IS_TOP): Renamed to...
(AF_CJK_BLUE_TOP): This.
(AF_CJK_MAX_BLUES): Remove.
(AF_CJKAxisRec): Updated.
2013-08-25 19:47:26 +02:00
Werner Lemberg
5c4a23a4e9 [autofit] Typo.
* src/autofit/afblue.hin, src/autofit/afblue.c (GET_UTF8_CHAR): Use
cast.
2013-08-25 19:29:07 +02:00
Werner Lemberg
306f8c5d89 [autofit] Synchronize cjk' with latin' module (and vice versa).
* src/autofit/afcjk.c (af_cjk_metrics_init_widths): Add tracing
messages.
(af_cjk_metrics_init_blues): Don't pass blue string array as
argument but use the global array directly.
Use `outline' directly.
Update and add tracing messages.
(af_cjk_metrics_init): Simplify code.
(af_cjk_metrics_scale_dim): Improve tracing message.
(af_cjk_metrics_scale): Synchronize.

* src/autofit/aflatin.c (af_latin_metrics_init_widths,
af_latin_metrics_init_blues): Improve and add tracing messages.
2013-08-25 13:07:08 +02:00
Werner Lemberg
0975d685ed [autofit] Make `latin' module use blue stringsets.
* src/autofit/aflatin.c (AF_LATIN_MAX_TEST_CHARACTERS): Removed.
(af_latin_blue_chars): Removed.
(af_latin_metrics_init_blues): Replace AF_LATIN_MAX_TEST_CHARACTERS
with AF_BLUE_STRING_MAX_LEN.
Change loops to use offsets (in file `afblue.h') into the new arrays
`af_blue_stringsets' and `af_blue_strings' (in file `afblue.c').
Use `AF_LATIN_IS_SMALL_TOP_BLUE' macro.

* src/autofit/aflatin.h: Remove old enumeration values superseded by
the new data in `afblue.h'.
(AF_LATIN_IS_TOP_BLUE): Updated definition.
(AF_LATIN_IS_SMALL_TOP_BLUE): New macro.
(AF_LATIN_MAX_BLUES): Remove.
(AF_LatinAxisRec): Updated.
2013-08-25 08:37:47 +02:00
Werner Lemberg
db3e5b9394 [autofit] Add blue stringsets.
* src/autofit/aftypes.h: Include `afblue.h'.
(AF_ScriptClassRec): Add `blue_stringset' field.
(AF_DEFINE_SCRIPT_CLASS): Updated.

* src/autofit/autofit.c: Include `afblue.c'.

* src/autofit/afcjk.c (af_hani_script_class), src/autofit/afdummy.c
(af_dflt_script_class), src/autofit/afindic.c
(af_deva_script_class), src/autofit/aflatin.c
(af_latn_script_class), src/autofit/aflatin2.c
(af_ltn2_script_class): Updated.

* src/autofit/rules.mk (AUTOF_DRV_SRC): Add `afblue.c'.
2013-08-25 08:23:22 +02:00
Werner Lemberg
8b8be78385 [autofit] Introduce data file for blue strings.
The idea is to have a central file which gets processed by a Perl
script to create proper `.c' and `.h' files using templates.  There
are two other reasons to do that:

  . The data file should be easily readable.  We use UTF-8 encoding
    which then gets converted to single bytes.

  . Since the number of supported scripts will increase soon, the
    current usage of blue string arrays is a waste of space.  Using
    the Perl script it is possible to imitate jagged arrays,
    defining enumeration constants as offsets into the arrays.

This commit only adds files without changing any functionality.

* src/autofit/afblue.dat: New data file.
* src/tools/afblue.pl: New Perl script for processing `afblue.dat'.

* src/autofit/afblue.cin, src/autofit/afblue.hin: New template files
for...
* src/autofit/afblue.c, src/autofit/afblue.c: New source files.
To avoid a dependency on Perl, we add them too.
2013-08-25 08:01:41 +02:00
Alexei Podtelezhnikov
fc32e1c8cc [base] Enable new algorithm for BBox_Cubic_Check.
* src/base/ftbbox.c: Enable new BBox_Cubic_Check algorithm, remove the
old one. Improve comments.
2013-08-19 22:57:05 -04:00
Alexei Podtelezhnikov
32a7d87050 [base] Clean up BBox_Conic_Check.
* src/base/ftbbox.c (BBox_Conic_Check): Remove redundant checks for
extremum at the segment ends, which are already within the bbox.
Slightly modify calculations.
2013-08-17 22:19:21 -04:00
Alexei Podtelezhnikov
1a9c3d14fb [base] Finish experimental (disabled) BBox_Cubic_Check implementation.
* src/base/ftbbox.c (BBox_Cubic_Check): Scale arguments to improve
accuracy and avoid overflows.
2013-08-15 22:51:42 -04:00
Alexei Podtelezhnikov
61a65510dc [base] Refactor experimental (disabled) BBox_Cubic_Check.
* src/base/ftbbox.c (BBox_Cubic_Check): Implement the minimum search
as the mirror image of the maximum search.
2013-08-13 22:28:57 -04:00
John Tytgat
9bcfab8758 Fix Savannah bug #39702.
* src/cff/cffload.c (cff_index_get_pointers): Check for `cur_offset
!= 0'; this stronger test is mandated by the CFF specification.
Fix test for INDEX structures which have one or more empty entries
at the end.
2013-08-06 08:55:19 +02:00
Werner Lemberg
a32682f176 Fix gcc pragmas, part 2.
* src/truetype/ttinterp.c (TT_MulFix14_long_long,
TT_DotFix14_long_long): `#pragma gcc diagnostic {push,pop}' has been
introduced with gcc version 4.6.
2013-08-06 00:21:46 +02:00
Werner Lemberg
69e524d5fe Fix gcc pragmas.
* src/truetype/ttinterp.c (TT_MulFix14_long_long,
TT_DotFix14_long_long): Older gcc versions don't accept diagnostic
pragmas within a function body.
2013-08-05 23:38:32 +02:00
Werner Lemberg
df41fe5791 Whitespace. 2013-08-05 16:34:32 +02:00
Werner Lemberg
cc25e3ae12 [autofit] Improve handling of `near' points.
Points which are very near to each other are now marked as such.
The `weak' flag is then computed by using the `in' vector of the
first and the `out' vector of the last point of a group of near
points.

For example, this fixes the rendering of glyph `Oslash' in
`Roboto-Thin.ttf'.

* src/autofit/afhints.h (AF_Flags): New value `AF_FLAGS_NEAR'.

* src/autofit/afhints.c (af_glyph_hints_reload): Introduce
the heuristic value `near_limit' to decide whether the current point
is near to the previous one, then set `AF_FLAG_NEAR' accordingly.
Store good `in' vector (of last non-near point) in
`last_good_in_{x,y}' and use it as an argument to
`ft_corner_is_flat' if necessary.
2013-08-05 08:46:15 +02:00
Werner Lemberg
ba9cf52d3b Comment typo. 2013-08-05 07:00:59 +02:00
Werner Lemberg
fb09a51f0f Add comments to `ft_corner_is_flat'. 2013-08-04 18:24:02 +02:00
Werner Lemberg
b8bf8b54e5 [autofit] Update comments. 2013-08-04 09:25:24 +02:00
Werner Lemberg
6d3c10e055 Typo. 2013-08-02 20:47:15 +02:00
Werner Lemberg
456cc440ca [autofit] Move declaration of scripts into separate file.
This has the benefit that we don't need to duplicate the data at
different places.

* src/autofit/afscript.h: New file.

* src/autofit/aftypes.h (AF_Script): Include `afscript.h' to define
the enumeration values.

* src/autofit/afglobal.c: Include `afscript.h' to get the script
specific header files.
(af_script_classes): Include `afscript.h' to fill this array.

* src/autofit/afpic.c: Include `afscript.h' to get the script
specific header files.
(autofit_module_class_pic_init): Include `afscript.h' for
initialization.
* src/autofit/afpic.h (AF_SCRIPT_CLASSES_COUNT,
AF_SCRIPT_CLASSES_REC_COUNT): Removed.  Use `AF_SCRIPT_MAX' instead.

* src/autofit/rules.mk (AUTOF_DRV_H): Updated.
2013-08-02 20:25:21 +02:00
Werner Lemberg
773601da12 [autofit] Move declaration of writing systems into separate file.
This has the benefit that we don't need to duplicate the data at
different places.

* src/autofit/afwrtsys.h: New file.

* src/autofit/aftypes.h (AF_WritingSystem): Include `afwrtsys.h' to
define the enumeration values.

* src/autofit/afglobal.c: Include `afwrtsys.h' to get the writing
system specific header files.
Include `afpic.h'.
(af_writing_system_classes): Include `afwrtsys.h' to fill this
array.

* src/autofit/afpic.c: Include `afwrtsys.h' to get the writing
system specific header files.
(autofit_module_class_pic_init): Include `afwrtsys.h' for
initialization.
* src/autofit/afpic.h (AF_WRITING_SYSTEM_CLASSES_COUNT,
AF_WRITING_SYSTEM_CLASSES_REC_COUNT): Removed.  Use
`AF_WRITING_SYSTEM_MAX' instead.
2013-08-02 19:51:17 +02:00
Werner Lemberg
74a9b670e9 [sfnt] Fix compilation with g++.
* src/sfnt/pngshim.c (error_callback, read_data_from_FT_stream): Use
cast.
(Load_SBit_Png): Pacify compiler.
2013-08-02 14:53:32 +02:00
Werner Lemberg
89a529f317 [autofit] Fix `make multi'.
* include/freetype/config/ftconfig.h (FT_LOCAL_ARRAY,
FT_LOCAL_ARRAY_DEF): New macros.

* src/autofit/afglobal.c (af_writing_system_classes,
af_script_classes): Use FT_LOCAL_ARRAY_DEF.
* src/autofit/afglobal.h: Declare `af_writing_system_classes' and
`af_script_classes'.
* src/autofit/afloader.c: Include `afpic.h'.
2013-08-02 14:50:23 +02:00
Werner Lemberg
e8ed2d621e Another round of cppcheck nitpicks.
The call was (from the top-level of the FreeType tree):

  cppcheck --force \
           --enable=all \
           -I /usr/include \
           -I /usr/local/include \
           -I /usr/lib/gcc/i586-suse-linux/4.7/include \
           -I include \
           -I include/freetype \
           -I include/freetype/config \
           -I include/freetype/internal \
           -DFT2_BUILD_LIBRARY \
           . &> cppcheck.log

using cppcheck git commit f7e93f99.

Note that cppcheck still can't handle `#include FOO' (with `FOO' a
macro).

*/* Improve variable scopes.
*/* Remove redundant initializations which get overwritten.

* src/gxvalid/*: Comment out redundant code or guard it with
FT_DEBUG_LEVEL_TRACE.
2013-08-01 12:20:20 +02:00
Werner Lemberg
72f5ff5bbb [autofit] Introduce `writing systems'.
This patch adds a new top level to the auto-hinter's script class
hierarchy.  It defines `writing systems' which can contain multiple
scripts.

For example, the `latin' writing system (in file `aflatin.c') is
able to support scripts like Latin, Cyrillic, Armenian, etc., which
can be handled similarly.

Scripts are now named using four-letter OpenType tags.

* src/autofit/aftypes.h (AF_ScriptClassRec): Move relevant members
to...
(AF_WritingSystemClassRec): This new structure.  It holds pointers
to functions which can be shared among related scripts.
(AF_WritingSystem): New enumeration.
(AF_Script): Revised values using four-letter tags.
(AF_DEFINE_WRITING_SYSTEM_CLASS): New macro.
(AF_DEFINE_SCRIPT_CLASS): Updated.

* src/autofit/afglobal.c (af_writing_system_classes): New global,
constant array.
(af_script_classes): Updated.
(af_face_globals_free): Updated.
Remove assertion.
(af_face_globals_get_metrics): Updated.

* src/autofit/afglobal.h (AF_SCRIPT_FALLBACK)
[!AF_CONFIG_OPTION_CJK]: Handle this case.

* src/autofit/afloader.c (af_loader_load_g, af_loader_load_glyph):
Updated.

* src/autofit/afpic.c (autofit_module_class_pic_init): Updated;
initialize structures for both writing systems and scripts.
* src/autofit/afpic.h: Updated.
(AF_WRITING_SYSTEM_CLASSES_GET): New macro.

* src/autofit/afcjk.c (af_cjk_writing_system_class): New writing
system.
(af_cjk_uniranges): Renamed to...
(af_hani_uniranges): This.
(af_cjk_script_class): Reduced and renamed to...
(af_hani_script_class): This.
* src/autofit/afcjk.h: Updated.

* src/autofit/afdummy.c (af_dummy_writing_system_class): New writing
system.
(af_dummy_script_class): Reduced and renamed to...
(af_dflt_script_class): This.
* src/autofit/afdummy.h: Updated.

* src/autofit/afindic.c (af_indic_writing_system_class): New writing
system.
(af_indic_uniranges): Renamed to...
(af_deva_uniranges): This.
(af_indic_script_class): Reduced and renamed to...
(af_deva_script_class): This.
* src/autofit/afcjk.h: Updated.

* src/autofit/aflatin.c (af_latin_writing_system_class): New writing
system.
(af_latin_uniranges): Renamed to...
(af_latn_uniranges): This.
(af_latin_script_class): Reduced and renamed to...
(af_latn_script_class): This.
* src/autofit/aflatin.h: Updated.

* src/autofit/aflatin2.c (af_latin2_writing_system_class): New
writing system.
(af_latin2_uniranges): Renamed to...
(af_ltn2_uniranges): This.
Synchronize ranges with `latin'.
(af_latin2_script_class): Reduced and renamed to...
(af_ltn2_script_class): This.
* src/autofit/aflatin2.h: Updated.
2013-07-31 22:57:01 +02:00
Werner Lemberg
5d6a360542 [autofit] Variable renaming.
* src/autofit/aftypes.h (AF_ScriptMetricsRec):
s/clazz/script_class/.
Update all users.
2013-07-31 22:57:01 +02:00
Werner Lemberg
cc34efca99 Minor. 2013-07-31 22:55:50 +02:00
suzuki toshiya
f2e7f1e1dd 2013-07-30 Behdad Esfahbod <behdad@google.com>
Prevent division by zero by a transparent color.

	* src/base/ftbitmap.c (ft_gray_for_premultiplied_srgb_bgra):
	Return 0 immediately, when alpha channel is zero.
2013-07-30 13:32:57 +09:00
Behdad Esfahbod
21c32b08d5 Add FT_FACE_FLAG_COLOR and FT_HAS_COLOR.
Also disambiguate Google's color bitmap tables.

* include/freetype/freetype.h (FT_FACE_FLAG_COLOR, FT_HAS_COLOR):
New macros.

* include/freetype/internal/tttypes.h (TT_SbitTableType): Add
TT_SBIT_TABLE_TYPE_CBLC.

* src/sfnt/sfobjs.c (sfnt_load_face): Handle FT_FACE_FLAG_COLOR.

* src/sfnt/ttsbit.c (tt_face_load_sbit,
tt_face_load_strike_metrics, tt_face_load_sbit_image): Handle
TT_SBIT_TABLE_TYPE_CBLC.
2013-07-25 21:53:18 +02:00
suzuki toshiya
b4725cb716 [sfnt] Fix for `make multi' target.
* src/sfnt/pngshim.c (Load_SBit_Png): Use FT_LOCAL_DEF().
2013-07-24 14:25:39 +09:00
Behdad Esfahbod
ff269528ca [sfnt] Fix `sbix' table version handling.
* src/sfnt/ttsbit.c (tt_face_load_sbit) [TT_SBIT_TABLE_TYPE_SBIX]:
USHORT version numbers are to be considered as `minor'.
2013-07-20 08:02:39 +02:00
Werner Lemberg
05c1421f8d [autofit] Fix segment classification for blue zones.
The old code (essentially unchanged since the very beginning)
incorrectly handled this configuration

               x -o- x
                /   \
               /     \
              /       \
             o         o

as flat and this

                o               o
               /               /
             x|              x|
              |               |
              o---------------o

as round.  (`o' and `x' are on and off points, respectively).

This is a major change which should improve the rendering results
enormously for many TrueType fonts, especially in the range approx.
20-40ppem, fixing the appearance of many overshoots.

* src/autofit/aflatin.c (af_latin_metrics_init_blues): Look at the
first and last points of the segment, not the points right before
and after.
2013-07-19 23:11:23 +02:00
Behdad Esfahbod
778a7e6a36 [sfnt] `sbix' fix-ups.
* src/sfnt/sfobjs.c (sfnt_load_face): Apple's `sbix' color bitmaps
are rendered scaled and then the `glyf' outline rendered on top.  We
don't support that yet, so just ignore the `glyf' outline and
advertise it as a bitmap-only font.

* src/sfnt/ttsbit.c (tt_face_load_strike_metrics)
[TT_SBIT_TABLE_TYPE_SBIX]: Return metrics in 26.6 units.
(tt_face_load_sbix_image): Typo.
2013-07-19 14:28:28 +02:00
Werner Lemberg
01705395b0 [sfnt] Add support for Apple's `sbix' color bitmap table.
* include/freetype/internal/tttypes.h (TT_SBit_MetricsRec): Widen
fields to FT_Short and FT_UShort, respectively.
(TT_SBitTableType): New enumeration.
(TT_FaceRec): Add `sbit_table_type' field.

* include/freetype/tttags.h (TTAG_sbix): New macro.

* src/sfnt/pngshim.c (Load_SBit_Png): Pass a more generic
FT_GlyphSlot argument instead FT_Bitmap.
Add flag to control map and metrics handling.
Update all users.

* src/sfnt/ttsbit.c: Include `ttmtx.h'.
(tt_face_load_eblc): Renamed to...
(tt_face_load_sbit): This.
Handlic `sbix' bitmaps.
(tt_face_free_eblc): Renamed to...
(tt_face_load_sbit): This.
Updated.
(tt_face_load_strike_metrics): Handle `sbix' bitmaps.
(tt_face_load_sbix_image): New function.
(tt_sbit_decoder_alloc_bitmap, tt_sbit_decoder_load_image,
tt_sbit_decoder_load_byte_aligned, tt_sbit_decoder_load_bit_aligned,
tt_sbit_decoder_load_compound, tt_sbit_decoder_load_png,
tt_sbit_decoder_load_image, tt_sbit_decoder_load_bitmap): Don't pass
and handle load flags.
(tt_sbit_decoder_load_bitmap) [!FT_CONFIG_OPTION_USE_PNG]: Better
handle formats 17-19.
Move color to grayscale conversion to...
(tt_face_load_sbit_image): Here.
Handle `sbix' bitmaps.

* src/sfnt/pngshim.h: Updated.
* src/sfnt/ttsbit.h: Updated.
* src/sfnt/sfdriver.c: Updated.
2013-07-18 13:13:12 +02:00
Werner Lemberg
274207eb9a [sfnt] Ignore invalid magic number in head' or bhed'.
Other font engines seem to ignore it also.  Problem reported by
Hin-Tak Leung <htl10@users.sourceforge.net>.

* src/sfnt/ttload.c (check_table_dir): Don't abort but warn only if
we have an invalid magic number.
2013-07-18 12:38:57 +02:00
Werner Lemberg
9a7951d99b [smooth] Fix segfault caused by previous commit.
* src/smooth/ftgrays.c (gray_set_cell): Always compute
`ras.invalid'.
2013-07-16 15:25:24 +02:00
David Turner
89929ec6b9 [smooth] Improve performance.
Provide a work-around for an ARM-specific performance bug in GCC.
This speeds up the rasterizer by more than 5%.

Also slightly optimize `set_gray_cell' and `gray_record_cell' (which
also improves performance on other platforms by a tiny bit (<1%).

* src/smooth/ftgrays.c (FT_DIV_MOD): New macro.
Use it where appropriate.

(gray_record_cell, gray_set_cell, gray_move_to,
gray_convert_glyph_inner): Streamline condition handling.
2013-07-16 13:36:07 +02:00
David Turner
f66d48e923 Add assembler code for TT_MulFix14 and TT_DotFix14.
This patch provides slightly optimized versions for ARM, x86, and
x86_64 CPUs if built with GCC.

Also remove some dead code.

* src/truetype/ttinterp.c (TT_MulFix14_arm, TT_MulFix14_long_long,
TT_DotFix14_long_long): New functions.
2013-07-16 13:19:32 +02:00
Werner Lemberg
aa0ac3239c [sfnt] Fix documentation of `tt_face_get_metrics'.
Problem reported in Savannah bug #39383.
2013-07-02 10:36:26 +02:00
Werner Lemberg
680c1d408f * src/winfonts/winfnt.c (FNT_Load_Glyph): Fix bitmap width guard. 2013-06-27 17:21:59 +02:00
Werner Lemberg
b8850fc1fd [cff] Add darkening limit to `darkening-parameters'.
* src/cff/cffdrivr.c (cff_property_set): Add check.
2013-06-26 12:22:10 +02:00
Werner Lemberg
89ca1fd6d7 [cff] Add `darkening-parameters' property.
* include/freetype/ftcffdrv.h: Document it.

* src/cff/cffdrivr.c (cff_property_set, cff_property_get): Handle
`darkening-parameters' property.

* src/cff/cf2font.h (CF2_FontRec): Add `darkenParams' array.

* src/cff/cf2font.c (cf2_computeDarkening): Add `darkenParams'
argument and use it.
Update all callers.

* src/cff/cf2ft.c (cf2_decoder_parse_charstrings): Copy
`darken_params' values.

* src/cff/cffobjs.h (CFF_DriverRec): Add `darken_params' array.

* src/cff/cffobjs.c (cff_driver_init): Set default values for
`darken_params'.
2013-06-25 23:28:02 +02:00
Werner Lemberg
fad93267a2 [docmaker] Code shuffling.
* src/tools/docmaker/tohtml.py (re_url): Move regexp...
* src/tools/docmaker/sources.py: ... to this file.
2013-06-25 10:41:37 +02:00
Werner Lemberg
8bdc40716a [docmaker] Remove unused functions.
* src/tools/docmaker/content.py (DocMarkup.get_start,
DocBlock.get_markup_name): Removed.
* src/tools/docmaker/tohtml.py (html_quote0, dump_html_code,
HtmlFormatter.make_html_words): Removed.
2013-06-25 10:20:53 +02:00
Werner Lemberg
c7cc9ebe20 [docmaker] Recognise URLs.
* src/tools/docmaker/tohtml.py (re_url): New regular expression.
(make_html_para): Use it.
2013-06-25 07:24:02 +02:00
Werner Lemberg
3da5182804 Fix comment. 2013-06-23 09:48:20 +02:00
Werner Lemberg
25b7da5348 * Version 2.5.0 released.
=========================

Tag sources with `VER-2-5-0'.

* docs/VERSION.DLL: Update documentation and bump version number to
2.5.0.

* README, Jamfile (RefDoc),
builds/win32/vc2005/freetype.vcproj, builds/win32/vc2005/index.html,
builds/win32/vc2008/freetype.vcproj, builds/win32/vc2008/index.html,
builds/win32/vc2010/freetype.vcxproj, builds/win32/vc2010/index.html,
builds/win32/visualc/freetype.dsp,
builds/win32/visualc/freetype.vcproj,
builds/win32/visualc/index.html, builds/win32/visualce/freetype.dsp,
builds/win32/visualce/freetype.vcproj,
builds/win32/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/2.4.12/2.5.0/, s/2412/250/.

* include/freetype/freetype.h (FREETYPE_MINOR): Set to 5.
(FREETYPE_PATCH): Set to 0.

* builds/unix/configure.raw (version_info): Set to 16:2:10.

* src/base/ftobjs.c (FT_Open_Face): Pacify compiler.
* src/truetype/ttinterp.c (Ins_MSIRP, Ins_MIRP): Ditto.
2013-06-19 10:23:36 +02:00
Werner Lemberg
f56691a852 Fix Savannah bug #39269.
* src/base/ftgloadr.c (FT_GlyphLoader_CheckPoints): Free memory in
case of reacollocation failures.
2013-06-18 10:17:48 +02:00
Andrew Church
67cf7a8841 Fix Savannah bug #39266.
If memory allocations fail at certain points while opening a font,
FreeType can either crash due to a NULL dereference or leak memory.

* include/freetype/internal/ftobjs.c (FT_Face_InternalRec,
FT_LibraryRec): Make `refcount' a signed integer.  If, for example,
FT_Open_Face() fails in a memory allocation before the face's
reference count is set to 1, a subsequent `FT_Done_Library' call
would otherwise loop over `FT_Done_Face' 2^32 times before freeing
the face.

* src/base/ftobjs.c (open_face): Initialize `stream' and friends
earlier.
(FT_Open_Face) <Fail>: Behave correctly if `node' is NULL.
(FT_Destroy_Module) <Fail>: Check that `renderer_clazz' is valid.
2013-06-18 09:35:34 +02:00
Werner Lemberg
d7e3444b8a * src/smooth/ftgrays.c One final pragma to silence 64-bit MSVC. 2013-06-14 18:33:39 +02:00
Dave Arnold
cb23a62880 [cff] Add code to Adobe's engine to handle ppem > 2000.
* src/cff/cffgload.c (cff_slot_load): If we get
FT_Err_Glyph_Too_Big, retry unhinted and scale up later on.
2013-06-13 07:46:32 +02:00
Werner Lemberg
c06889eb2c More compiler warning fixes.
*/*: Use cast to `FT_Bool' (or `Bool') where appropriate.
2013-06-12 10:58:06 +02:00
Werner Lemberg
5e094c6fb2 [truetype] Improve handling of broken sbit advance widths.
* src/truetype/ttgload.c (TT_Load_Glyph): Use the glyph's (scaled)
`linearHoriAdvance' if the sbit's `horiAdvance' value is zero.

Cf. font `Fixedsys Excelsior' v3.01 (FSEX300.ttf), glyph A, 16ppem.
2013-06-10 14:59:21 +02:00
Werner Lemberg
a25ecfddba [sfnt] Improve embedded bitmap tracing.
* src/base/ftobjs.c (FT_Request_Size): Move trace message regarding
bitmap strike match to...
(FT_Match_Size): This function.

* src/sfnt/ttsbit.c (tt_sbit_decoder_load_metrics,
tt_sbit_decoder_load_byte_aligned, tt_sbit_decoder_load_bit_aligned,
tt_sbit_decoder_load_compound, tt_sbit_decoder_load_png,
tt_sbit_decoder_load_image): Decorate with tracing messages.
2013-06-10 12:57:16 +02:00
Werner Lemberg
99e60d840d Fix Savannah bug #39160.
* src/truetype/ttinterp.c (Ins_SDPVTL): Set projection vector too
for the degenerate case.
2013-06-10 01:44:37 +02:00
Werner Lemberg
2ba871b289 * src/cache/ftcmanag.c (FTC_Manager_Reset): Add missing cache flush.
This code, present since eight(!) years in the unused `CACHE'
branch, has been forgotten to apply to the master branch.  It's
really amazing that noone has ever complained since
`FTC_Manager_Reset' is pretty useless without flushing the cache.
2013-06-09 08:20:54 +02:00
Werner Lemberg
3f6e0e0c6b Add and improve pragmas for MSVC compiler.
* include/freetype/internal/ftdebug.h: Remove pragmas.
* include/freetype/internal/ftserv.h: Use push and pop for pragmas.
* include/freetype/internal/ftvalid.h: Handle warning C4324.
* src/base/ftobjs.c: Use push and pop for pragmas.
* src/gzip/ftgzip.c: Handle warning C4244.
2013-06-07 18:10:40 +02:00
Werner Lemberg
85fd84b828 [cff] s/cf2_getGlyphWidth/cf2_getGlyphOutline/.
* src/cff/cf2font.c, src/cff/cf2font.h, src/cff/cf2ft.c: Do it.
2013-06-07 17:10:21 +02:00
Werner Lemberg
4447b2c84e [cff] Add early exit feature for width-only calls.
This is for `FT_Get_Advance'.

There are 7 places where the spec says the width can be defined:

  hstem/hstemhm
  vstem/vstemhm
  cntrmask/hintmask
  hmoveto
  vmoveto
  rmoveto
  endchar

* src/cff/cf2intrp.c (cf2_doStems): Exit early for width-only calls,
if possible.

(cf2_interpT2CharString) <cf2_cmdHSTEM>, <cf2_cmdVSTEM>,
<cf2_cmdVMOVETO>, <cf2_cmdENDCHAR>, <cf2_cmdHINTMASK>,
<cf2_cmdRMOVETO>, <cf2_cmdHMOVETO>: Exit early for width-only calls.
2013-06-06 21:28:36 +02:00
Werner Lemberg
badf317840 Next round of compiler fixes.
* builds/win32/ftdebug.c, builds/wince/ftdebug.c (ft_debug_init):
Add proper cast.

* include/freetype/internal/ftserv.h (FT_SERVICE_UNAVAILABLE): Fix
cast.
* include/freetype/internal/ftstream.h: Decorate stream and frame
macros with `FT_Long' and `FT_ULong' as appropriate.

* src/base/ftrfork.c (raccess_guess_darwin_hfsplus,
raccess_guess_darwin_newvfs): Use cast.

* src/bdf/bdflib.c (_bdf_set_default_spacing): Use cast.

* src/cache/ftcmanag.c (FTC_Manager_Check): Fix cast.
* src/cache/ftcmanag.h (FTC_ManagerRec): Ditto.

* src/cff/cf2arrst.c (cf2_arrstack_setNum_Elements): Use cast.
* src/cff/cf2ft.c (cf2_freeSeacComponent): Ditto.
* src/cff/cffobjs.c (remove_subset_prefix, remove_style): Ditto.

* src/cid/cidparse.c (cid_parser_new): Use cast.

* src/pcf/pcfdrivr.c (PCF_Glyph_Load): Use cast.

* src/psaux/psobjs.c (reallocate_t1_table): Fix argument type.

* src/raster/ftraster.c (ft_black_reset): Use cast.

* src/truetype/ttgxvar.c (FT_Stream_FTell): Use cast.
(ALL_POINTS): Fix cast.

* src/type1/t1driver.c (t1_ps_get_font_value): Add casts.
* src/type1/t1parse.c (T1_Get_Private_Dict): Add cast.
2013-06-06 09:16:38 +02:00
Dave Arnold
c378249e58 Fix more MSVC Win32 compiler warnings.
* src/base/ftobjs.c: Fix typo in MS pragma.

* src/base/bdflib.c (_bdf_set_default_spacing, _bdf_add_property):
`lineno' is only used in debug mode.

* src/cff/cf2ft.c (cf2_builder_moveTo): `params' is only used in
debug mode.
2013-06-05 19:57:55 +02:00
Werner Lemberg
9ef0bc005c Minor formatting. 2013-06-05 14:53:27 +02:00
Werner Lemberg
45392b77a8 Fix compiler warnings.
* include/freetype/internal/ftmemory.h: Decorate memory allocation
macros with `FT_Long' where appropriate.
Remove duplicate of FT_MEM_QRENEW_ARRAY definition.

* src/base/ftbitmap.c (ft_gray_for_premultiplied_srgb_bgra): Use
cast.

* src/base/ftobjs.c: Add warning disabling pragma for MSVC while
including `md5.c'.

* src/cff/cf2intrp.c (cf2_interpT2CharString) <cf2_cmdESC>: Add
cast.

* src/sfnt/ttsbit.c (tt_sbit_decoder_load_compound): Fix casts.
(tt_sbit_decoder_load_bitmap): Beautification.

* src/smooth/ftsmooth.c (ft_smooth_render_generic): Initialize
variables (earlier).

* src/truetype/ttgload.c (TT_Process_Simple_Glyph): Pacify compiler.

* src/truetype/ttgxvar.c (TT_Get_MM_Var): Use unsigned constants
where appropriate.

* src/type1/t1load.c (T1_Get_MM_Var): Ditto.
2013-06-05 13:43:20 +02:00
Werner Lemberg
d963498faf * src/cff/cf2font.c (cf2_getGlyphWidth): Initialize `advWidth'.
Problem reported by Ingmar Sittl <ingmar.sittl@elektrobit.com>.
2013-06-04 20:18:57 +02:00
Werner Lemberg
8d8508e4d2 Missed some cppcheck items. 2013-06-04 13:09:01 +02:00
Werner Lemberg
dc624ca4dc Apply fixes for cppcheck nitpicks.
http://cppcheck.sourceforge.net/

Note that the current version heavily chokes on FreeType, delivering
even wrong results.  I will report those issues to the cppcheck team
so that a newer version gives improved results hopefully.

*/* Improve variable scopes.
*/* Remove redundant initializations which get overwritten.

* src/base/ftmac.c ,builds/mac/ftmac.c (count_faces_scalable):
Remove unused variable.

* src/base/ftdbgmem.c (ft_mem_table_destroy): `table' can't be zero.

* src/gxvalid/gxvkern.c (gxv_kern_subtable_fmt1_entry_validate):
Remove functionless code.

* src/tools/ftrandom.c (main): Fix memory leak.
2013-06-04 10:30:48 +02:00
Werner Lemberg
2429dc3d7c Add CFF_CONFIG_OPTION_OLD_ENGINE configuration option.
This controls whether the old FreeType CFF engine gets compiled into
FreeType.  It is now disabled by default.

* devel/ftoption.h, include/freetype/config/ftoption.h
(CFF_CONFIG_OPTION_OLD_ENGINE): New macro.

* src/cff/cffdrivr.c (cff_property_set), src/cff/cffgload.c
(CFF_Operator, cff_argument_counts, cff_builder_add_point,
cff_operator_seac, cff_decoder_parse_charstrings, cff_slot_load),
src/cff/cffgload.h, src/cff/cffobjs.c (cff_driver_init): Use
CFF_CONFIG_OPTION_OLD_ENGINE to guard the affected code.

* docs/CHANGES: Updated.
2013-06-03 12:41:58 +02:00
Behdad Esfahbod
760d342d37 Add support for color embedded bitmaps (eg. color emoji).
A new load flag, FT_LOAD_COLOR, makes FreeType load color
embedded-bitmaps, following this draft specification

  https://color-emoji.googlecode.com/git/specification/v1.html

which defines two new SFNT tables, `CBDT' and `CBLC' (named and
modeled after `EBDT' and `EBLC', respectively).  The color bitmaps
are stored in the new FT_PIXEL_MODE_BGRA format to represent BGRA
pre-multiplied sRGB images.  If PNG support is available, PNG color
images as defined in the same proposed specification are supported
also.

Note that color bitmaps are converted to grayscale if client didn't
ask for color.

* builds/unix/configure.raw: Search for libpng.
Add `--without-png' option.

* devel/ftoption.h, include/freetype/config/ftoption.h
(FT_CONFIG_OPTION_USE_PNG): New macro.

* include/freetype/freetype.h (FT_LOAD_COLOR): New load flag.

* include/freetype/ftimage.h (FT_Pixel_Mode): Add
`FT_PIXEL_MODE_BGRA'.

* include/freetype/tttags.h (TTAG_CBDT, TTAG_CBLC): New tags.

* src/base/ftbitmap.c (FT_Bitmap_Embolden): Updated.
(ft_gray_for_premultiplied_srgb_bgra): New function.
(FT_Bitmap_Convert): Handle FT_PIXEL_MODE_BGRA.

* src/sfnt/pngshim.c, src/sfnt/pngshim.h: New files.

* src/sfnt/sfnt.c: Include `pngshim.c'.

* src/sfnt/ttsbit.c: Include FT_BITMAP_H and `pngshim.h'
(tt_face_load_eblc): Load `CBLC'.
(tt_sbit_decoder_init): Load `CBDT'.
(tt_sbit_decoder_alloc_bitmap): Pass load flags to select between
color and grayscale bitmaps.
Set `num_grays'.  This is used by `ftview' to choose the blending
algorithm.
(tt_sbit_decoder_load_byte_aligned,
tt_sbit_decoder_load_bit_aligned, tt_sbit_decoder_load_compound,
tt_sbit_decoder_load_image): Pass load flag.
s/write/pwrite/.
Don't call `tt_sbit_decoder_alloc_bitmap'.
Updated.
(tt_sbit_decoder_load_png) [FT_CONFIG_OPTION_USE_PNG]: New function.
(tt_sbit_decoder_load_bitmap): Pass load flag.
Handle new glyph formats 17, 18, and 19.
Call `tt_sbit_decoder_alloc_bitmap'.
Flatten color bitmaps if necessary.
(tt_face_load_sbit_image): Updated.

* src/sfnt/rules.mk (SFNT_DRV_SRC): Add `pngshim.c'.

* docs/CHANGES: Updated.
2013-05-29 11:36:18 +02:00
Guenter
41e4480e43 Apply Savannah patch #8055.
Make `apinames' create an import file for NetWare.

* src/tools/apinames.c (PROGRAM_VERSION): Set to 0.2.
(OutputFormat): Add `OUTPUT_NETWARE_IMP'.
(names_dump): Handle it.
(usage): Updated.
(main): Handle new command line flag `-wN'.
2013-05-24 11:38:09 +02:00
Behdad Esfahbod
2d6e1fbce7 Compilation fix.
* src/truetype/ttinterp.c (TT_RunIns)
[!TT_CONFIG_OPTION_SUBPIXEL_HINTING]: Make it work.
2013-05-23 08:01:20 +02:00