Assure that FreeType's internal include directories are found before
`CPPFLAGS' (which might be set by the user in the environment), and
`CPPFLAGS' before `CFLAGS'.
* builds/freetype.mk (FT_CFLAGS): Don't add `INCLUDE_FLAGS'.
(FT_COMPILE): Make this a special variable for compiling only the
files handled in `freetype.mk'.
(.c.$O): Removed, unused.
* src/*/rules.mk (*_COMPILE): Fix order of include directories.
* src/cff/cf2hints.c (cf2_hintmap_map): After the fix for Savannah
bug #43661, the test font `...aspartam.otf' still triggers an
FT_ASSERT. Since hintmap still works with count==0, ...
(cf2_glyphpath_lineTo, cf2_glyphpath_curveTo): ... add that term to
suppress the assert.
* src/cff/cf2intrp.c (cf2_interpT2CharString) <cf2_cmdHSTEM,
cf2_cmdVSTEM, cf2_cmdHINTMASK>: Don't append to stem arrays after
hintmask is constructed.
* src/cff/cf2hints.c (cf2_hintmap_build): Add defensive code to
avoid reading past end of hintmask.
The functions in this patch *do* return non-trivial errors that must
be taken care of.
* src/autofit/afloader.c (af_loader_load_g), src/base/ftobjs.c
(FT_Render_Glyph_Internal), src/base/ftoutln.c (FT_Outline_Render),
src/cff/cffgload.c (cff_decoder_parse_charstrings) <cff_op_endchar>,
src/psaux/psobjs.c (ps_parser_load_field_table), src/psaux/t1decode
(t1_decoder_parse_charstrings) <op_endchar>, src/truetype/ttgload.c
(load_truetype_glyph <subglyph loop>, tt_loader_init,
TT_Load_Glyph), src/truetype/ttgxvar.c (TT_Set_MM_Blend),
src/truetype/ttobjs.c (tt_size_run_fpgm, tt_size_run_prep): Do it.
We use a cast to indicate that we intentionally ignore a function's
return value. However, this doesn't apply to API functions where
errors can only happen for trivially invalid input.
* src/base/ftstroke.c (FT_Glyph_Stroke, FT_Glyph_StrokeBorder),
src/base/ftsynth.c (FT_GlyphSlot_Embolden), src/cff/cffgload.c
(cff_slot_load), src/pfr/pfrdrivr.c (pfr_get_kerning),
src/type1/t1load.c (parse_encoding), src/type42/t42parse.c
(t42_parse_encoding): Do it.
Don't cast cmap init function pointers to an incompatible type.
Without this patch, the number of parameters between declaration and
the real signature differs. Calling such a function results in
undefined behavior.
ISO/IEC 9899:TC3 (Committee Draft September 7, 2007)
6.5.2.2 Function calls
9 If the function is defined with a type that is not
compatible with the type (of the expression) pointed to by
the expression that denotes the called function, the
behavior is undefined.
On certain platforms (c -> js with emscripten) this causes
termination of execution or invalid calls because in the emscripten
implementation, function pointers of different types are stored in
different pointer arrays. Incorrect pointer type here results in
indexing of an incorrect array.
* src/cff/cffcmap.c (cff_cmap_encoding_init, cff_cmap_unicode_init),
src/pfr/pfrcmap.c (pfr_cmap_init), src/psaux/t1cmap.c
t1_cmap_standard_init, t1_cmap_expert_init, t1_cmap_custom_init,
t1_cmap_unicode_init), src/winfonts/winfnt.c (fnt_cmap_init): Fix
signature.
We no longer need an otherwise unused typedef that can cause a gcc
warning.
Problem reported by Alexei.
* src/cff/cffobjs.c (cff_driver_init): Use
`CFF_CONFIG_OPTION_DARKENING_PARAMETER_XXX' macros directly.
(SET_DARKENING_PARAMETERS): Removed.
Compile time tests are now ...
* devel/ftoption.h, include/config/ftoption.h: ... here.
We have been hit by
https://connect.microsoft.com/VisualStudio/feedback/details/718976/msvc-pr
* devel/ftoption.h, include/config/ftoption.h: Replace
`CFF_CONFIG_OPTION_DARKENING_PARAMETERS' with eight macros
`CFF_CONFIG_OPTION_DARKENING_PARAMETER_{X,Y}{1,2,3,4}'.
* src/cff/cffobjs.c (SET_DARKENING_PARAMETERS): Removed. We no
longer need double expansion.
(SET_DARKENING_PARAMETERS_0): Renamed to ...
(SET_DARKENING_PARAMETERS): ... this.
Update call.
* devel/ftoption.h, include/config/ftoption.h
(CFF_CONFIG_OPTION_DARKENING_PARAMETERS): New macro.
* src/cff/cffobjs.c (SET_DARKENING_PARAMETERS,
SET_DARKENING_PARAMETERS_0): New macros.
(cff_driver_init): Use new macros.
* src/cff/cf2ft.c (cf2_initLocalRegionBuffer,
cf2_initGlobalRegionBuffer): It is possible for a charstring to call
a subroutine if no subroutines exist. This is an error but should
not trigger an assert. Split the assert to account for this.
* src/cff/cf2hints.c (cf2_hintmap_build): Return when `hintMask' is
invalid. In this case, it is not safe to use the length of
`hStemHintArray'; the exception has already been recorded in
`hintMask'.
* src/cff/cf2ft.c (cf2_checkTransform): Convert assertion into
parameter check.
(cf2_decoder_parse_charstrings): Call `cf2_checkTransform' only if
we are scaling the outline.
(cf2_getPpemY): Remove problematic assertion.
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.
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.
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.
* 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.
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.
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.
