Commit Graph

1903 Commits

Author SHA1 Message Date
Dominik Röttsches 66189807b8 [sfnt] 'COLR' v1 PaintSkew related spec updates
* src/sfnt/ttcolr.c (read_paint): Implement spec changes around
PaintSkew, PaintSkewAroundCenter.  Update parsing to read shorter
values as changed in the spec.
* include/freetype/ftcolor.h (FT_PaintSkew): Update documentation.
2021-07-29 06:01:34 +00:00
Dominik Röttsches 48df0fa652 [sfnt] PaintRotate/PaintRotateAroundCenter spec updates
* src/sfnt/ttcolr.c (read_paint): Implement spec change where
PaintRotate and PaintRotateAroundCenter were split for a more
compact format definition.  Update parsing to read shorter values
as changed in the spec.
* include/freetype/ftcolor.h (FT_PaintRotate): Update documentation.
2021-07-29 05:59:30 +00:00
Werner Lemberg 801cd842e2 * Version 2.11.0 released.
==========================

Tag sources with `VER-2-11-0'.

* docs/VERSION.TXT: Add entry for version 2.11.0.
* docs/CHANGES: Updated.

* README, src/base/ftver.rc, builds/windows/vc2010/index.html,
builds/windows/visualc/index.html,
builds/windows/visualce/index.html,
builds/wince/vc2005-ce/index.html,
builds/wince/vc2008-ce/index.html, docs/freetype-config.1:
s/2.10.4/2.11.0/, s/2104/2110/.

* include/freetype/freetype.h (FREETYPE_MINOR): Set to 11.
(FREETYPE_PATCH): Set to 0.

* builds/unix/configure.raw (version_info): Set to 24:0:18.
* CMakeLists.txt (VERSION_MINOR): Set to 11.
(VERSION_PATCH): Set to 0.

* builds/toplevel.mk (dist): Ignore more git-related files.
2021-07-19 18:07:51 +02:00
Alex Richardson f7c6a06cb7 Support architectures where `long` is smaller than pointers.
I am currently trying to compile FreeType for CHERI-extended ISAs
(CHERI-RISC-V and Arm's Morello), but I am getting compiler warnings
from the `FT_UINT_TO_POINTER` macro.  When compiling with the CHERI
Clang compiler, not using `uinptr_t` for casts between integers an
pointers results in the following `-Werror` build failures:

```
In file included from .../src/truetype/truetype.c:22:
  .../src/truetype/ttgload.c:1925:22: error:
    cast from provenance-free integer type to pointer type will
    give pointer that can not be dereferenced
    [-Werror,-Wcheri-capability-misuse]
  node->data = FT_UINT_TO_POINTER( glyph_index );
               ^
  .../include/freetype/internal/compiler-macros.h:79:34: note:
    expanded from macro 'FT_UINT_TO_POINTER'
```

* include/freetype/internal/compiler-macros.h (FT_UINT_TO_POINTER):
The ISO C standard compliant fix for this would be to use
`uintptr_t` from `stdint.h`, but I am not sure if this is supported
by the minimum compiler version.  Therefore, use the
compiler-defined `__UINTPTR_TYPE__` macro (supported in GCC 4.6+ and
Clang since about 3.0) before checking for `_WIN64` and falling back
to `unsigned long`.
2021-07-15 12:09:04 +02:00
Oleg Oshmyan 5d27b10f4c [base] Fix `FT_Open_Face`'s handling of user-supplied streams.
This was already true (though undocumented) most of the time, but
not if `FT_NEW` inside `FT_Stream_New` failed or if the
`FT_OPEN_XXX` flags were bad.

Normally, `FT_Open_Face` calls `FT_Stream_New`, which returns the
user-supplied stream unchanged, and in case of any subsequent error
in `FT_Open_Face`, the stream is closed via `FT_Stream_Free`.

Up to now, however, `FT_Stream_New` allocates a new stream even if
it is already given one by the user.  If this allocation fails, the
user-supplied stream is not returned to `FT_Open_Face` and never
closed.  Moreover, the user cannot detect this situation: all they
see is that `FT_Open_Face` returns `FT_Err_Out_Of_Memory`, but that
can also happen after a different allocation fails within the main
body of `FT_Open_Face`, when the user's stream has already been
closed by `FT_Open_Face`.  It is plausible that the user stream's
`close` method frees memory allocated for the stream object itself,
so the user cannot defensively free it upon `FT_Open_Face` failure
lest it ends up doubly freed.  All in all, this ends up leaking the
memory/resources used by user's stream.

Furthermore, `FT_Stream_New` simply returns an error if the
`FT_OPEN_XXX` flags are unsupported, which can mean either an
invalid combination of flags or a perfectly innocent
`FT_OPEN_STREAM` on a FreeType build that lacks stream support.
With this patch, the user-supplied stream is closed even in these
cases, so the user can be sure that if `FT_Open_Face` failed, the
stream is definitely closed.

* src/base/ftobjs.c (FT_Stream_New): Don't allocate a buffer
unnecessarily.
Move error-handling code to make the control flow more obvious.
Close user-supplied stream if the flags are unsupported.
`FT_Stream_Open` always sets `pathname.pointer`, so remove the
redundant (re)assignment.  None of the `FT_Stream_Open...` functions
uses `stream->memory`, so keep just one assignment at the end,
shared among all possible control flow paths.
('Unsupported flags' that may need a stream closure can be either an
invalid combination of multiple `FT_OPEN_XXX` mode flags or a clean
`FT_OPEN_STREAM` flag on a FreeType build that lacks stream
support.)
2021-07-13 11:00:48 +02:00
Oleg Oshmyan a4c8f21ae7 [base] Reject combinations of incompatible `FT_OPEN_XXX` flags.
The three modes are mutually exclusive, and the documentation of the
`FT_OPEN_XXX` constants notes this.  However, there was no check to
validate this in the code, and the documentation on `FT_Open_Args`
claimed that the corresponding bits were checked in a well-defined
order, implying it was valid (if useless) to specify more than one.
Ironically, this documented order did not agree with the actual
code, so it could not be relied upon; hopefully, nobody did this and
nobody will be hurt by the new validation.

Even if multiple mode bits were allowed, they could cause memory
leaks: if both `FT_OPEN_STREAM` and `stream` are set along with
either `FT_OPEN_MEMORY` or `FT_OPEN_PATHNAME`, then `FT_Stream_New`
allocated a new stream but `FT_Open_Face` marked it as an 'external'
stream, so the stream object was never released.

* src/base/ftobjs.c (FT_Stream_New): Reject incompatible
`FT_OPEN_XXX` flags.
2021-07-13 10:44:38 +02:00
Anuj Verma e592982a83 [sdf] Improve documentation. 2021-07-13 10:00:22 +02:00
Werner Lemberg 205d1ae43e Small clean-ups for the last few commits.
* include/freetype/fttrace.h (afwarp): Removed.
2021-07-12 22:03:25 +02:00
David Turner 2f11522a2a Remove experimental auto-hinting 'warp' mode.
This feature was always experimental, and probably nevery worked
properly. This patch completely removes it from the source code,
except for a documentation block describing it for historical
purpose.
2021-07-12 09:25:22 +02:00
David Turner 15e889800a Remove experimental "Latin2" writing system (FT_OPTION_AUTOFIT2)
This code has always been experimental and was never compiled
anyway (FT_OPTION_AUTOFIT2 does not appear in ftoption.h or even
any of our build files).
2021-07-12 09:25:07 +02:00
Dominik Röttsches 286da6c528 [sfnt] Support PaintScale in 'COLR' v1 parsing.
* include/freetype/ftcolor.h (FT_PaintFormat): Renumber values, add
`FT_COLR_PAINTFORMAT_SCALE`.
(FT_PaintScale): New structure to represent 'PaintScale*' tables.
(FT_COLR_Paint): Updated.

* src/sfnt/ttcolr.c (FT_PaintFormat_Internal): New enumeration.
(read_paint): Parse 'PaintScale' and friends.
2021-07-01 06:49:03 +02:00
Werner Lemberg 90ecac4118 Update `CHANGES` file; other minor doc fixes. 2021-06-30 10:23:42 +02:00
Werner Lemberg e1b1b5422c ftcolor.h: Minor grammar fix. 2021-06-29 06:07:00 +02:00
Werner Lemberg ff40776591 [base] Add trace level to logging output.
Some practical debugging work has shown that displaying level X of
an `FT_TRACEX` macro in the output of `FT2_DEBUG="...  -v"` would be
very helpful to find out which trace level should be selected.  As
an example, we now get output like

```
[ttobjs:2]    TTF driver
[ttobjs:2]      SFNT driver
[sfobjs:2]      not a font using the SFNT container format
[t1objs:2]    Type 1 driver
[stream:7]    FT_Stream_EnterFrame: 14 bytes
```

* include/freetype/internal/ftdebug.h (FT_LOGGING_TAGX): New macro.
(FT_LOG): Use it to add the trace level to the logging tag.

* include/freetype/internal/fttrace.h (FT_MAX_TRACE_LEVEL_LENGTH):
Adjust.

* docs/DEBUG: Updated.
2021-06-25 09:24:07 +02:00
Werner Lemberg 1e65e6051a fterrors.h: Fix documentation extraction of `FT_Error_String`. 2021-06-23 08:14:42 +02:00
Dominik Röttsches 4cb21b9a92 [sfnt] s/PaintTransformed/PaintTransform/, s/transformed/transform/.
* include/freetype/ftcolor.h (FT_PaintTransformed, FT_PaintFormat,
FT_COLR_Paint): Do it to make it harmonize with other names such as
'PaintTranslate'.

* src/sfnt/ttcolr.c (read_paint, tt_face_get_paint): Ditto.
2021-06-22 20:50:48 +02:00
Dominik Röttsches 284eec1e18 Move 'COLR' API to `ftcolor.h`.
* include/freetype/freetype.h: Cut section layer managament
containing 'COLR' v0 and v1 API and move it to `ftcolor.h` as
requested by Werner on freetype-devel.
* include/freetype/ftcolor.h: Paste that section.
2021-06-22 20:33:33 +02:00
Werner Lemberg bcd73f7dbc freetype.h: Mark 'COLR' v1 API as experimental. 2021-06-20 16:23:40 +02:00
Werner Lemberg 08f66322e3 More various documentation improvements and fixes. 2021-06-08 18:23:16 +02:00
Werner Lemberg d586927d16 Various documentation improvements and fixes. 2021-06-08 17:44:53 +02:00
Werner Lemberg 36ee71714f [sdf] Formatting and improved comments. 2021-06-08 09:00:39 +02:00
Anuj Verma 2b1d556269 [sdf] Use 8 bits for final SDF output instead of 16bits.
Since 8-bits is enough to represent SDF data we no longer require
16-bits for  this purpose. Also, we now normalize the output data
to use the entire 8-bit range efficiently. For example: if we use
3.5 format with a spread of 1 we basically only use the starting
5-bits. By normalizing we can use the entire 8-bit range.

* include/freetype/freetype.h (FT_Render_Mode): Updated description
for `FT_RENDER_MODE_SDF` regarding this change.

* include/freetype/ftimage.h (FT_Pixel_Mode): Removed
`FT_PIXEL_MODE_GRAY16` since no longer required.

* include/freetype/fttypes.h (FT_F6Dot10): Removed since no longer
required.

* src/sdf/ftsdfrend.c (ft_sdf_render, ft_bsdf_render): Allocate 8-bit
bitmap instead of 16-bit buffer.

* src/sdf/ftsdfcommon.h (map_fixed_to_sdf): Added function to convert
16.16 distance value to our desired format.

* src/sdf/ftsdf.c (sdf_generate_with_overlaps,
sdf_generate_bounding_box): Use the new `map_fixed_to_sdf` function
and also use 8-bit output buffer.

* src/sdf/ftbsdf.c (finalize_sdf): Output to a 8-bit buffer instead
of 16-bit buffer.
2021-06-08 08:29:34 +05:30
Werner Lemberg 0d1c306e51 [psaux] Guard and trace AFM kern data allocation.
Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=31543

* include/freetype/internal/fttrace.h: Add 'afmparse' trace
component.

* src/psaux/afmparse.c (FT_COMPONENT): Define.
(afm_parse_track_kern, afm_parse_kern_pairs): Protect against
allocations bombs.
Add tracing.
(afm_parse_kern_data): Don't allow multiple kern data sections.
2021-05-25 11:27:56 +02:00
Alexei Podtelezhnikov 81852fbccc Prioritize the anti-aliasing renderer module.
* modules.cfg: Reorder the renderers.
* include/freetype/config/ftmodule.h: Ditto.
2021-05-18 22:18:17 -04:00
Alexei Podtelezhnikov 02dec61731 Typo. 2021-04-18 10:24:31 -04:00
Werner Lemberg f7d7e7f9f7 freetype.h: Documentation typos. 2021-02-27 12:14:02 +01:00
Dominik Röttsches 215ae25330 [sfnt] Update paint format values to support non-variable paints.
* freetype.h (FT_PaintFormat): Update paint format identifiers after
a specification change.  The specification was updated to have
sibling formats, variable and non-variable variants for each.
Reflect that here.

* sfnt/ttcolr.c (read_paint): Remove parsing of variable indices as
the non-variable formats no longer have them.
2021-02-16 13:15:41 +01:00
Werner Lemberg d51452e3ec Add new function `FT_Get_Transform`.
See

  https://github.com/harfbuzz/harfbuzz/issues/2428

for some reasons to introduce this function.

* include/freetype/freetype.h, src/base/ftobjs.c (FT_Get_Transform):
Implement it.
2021-02-13 08:52:58 +01:00
Werner Lemberg d93a011933 Minor editing of last commit; formatting. 2021-02-13 07:50:04 +01:00
Alexei Podtelezhnikov 70fd20e67e Decorate qsort callbacks with cdecl.
* include/freetype/internal/compiler-macros.h (FT_COMPARE_DEF):
Add new macro.
* src/base/ftrfork.c, src/bdf/bdflib.c, src/gxvalid/gxvcommn.c,
src/psaux/afmparse.c, src/psnames/psmodule.c, src/type1/t1afm.c,
src/sfnt/sfwoff.c, src/sfnt/sfwoff2.c: Update qsort callbacks.

Fixes #1026 when compiling FreeType with an unusual calling convention
while the C library qsort still expects cdecl.
2021-02-12 19:28:05 -05:00
Dominik Röttsches 54c5ad5c92 [sfnt] Implement 'COLR' v1 sweep gradients.
* freetype.h (FT_PaintSweepGradient): Add `FT_PaintSweepGradient` to
represent a 'COLR' v1 sweep gradient.
Update format.
(FT_PaintFormat): Update shifted paint formats.
Sync with spec.
* sfnt/ttcolr.c (read_paint): Logic to parse sweep gradients.
Fix struct access in radial gradient implementation.
2021-02-11 14:20:03 +01:00
Dominik Röttsches 64f01bfedd [sfnt] Provide optional root transform for 'COLR' v1 glyph graph.
* include/freetype/freetype.h (FT_Get_Color_Glyph_Paint):
Additional function argument root_transform to control whether
root transform should be returned.
(FT_OpaquePaint): Additional tracking field to denote whether
root transform is to be returned.
* include/freetype/internal/sfnt.h
(TT_Get_Color_Glyph_Paint_Func): Propagate additional argument.
* src/base/ftobjs.c (FT_Get_Color_Glyph_Paint): Ditto.
* src/sfnt/ttcolr.c (tt_face_get_colr_glyph_paint): Return root
transform reflecting the size and tranform configured on
FT_Face.
(read_paint): Initialize and track status of insert_root_transform
flag.
2021-02-10 18:51:04 +01:00
Werner Lemberg 324612ceb2 Always provide logging API.
It's easier to have stubs if FT_DEBUG_LOGGING is undefined than to
modify `ftexport.sym` conditionally.

Problem reported by Alexei.

* src/base/ftdebug.c: Include `ftlogging.h`.

(FT_Trace_Set_Level, FT_Trace_Set_Default_Level, FT_Set_Log_Handler,
FT_Set_Default_Log_Handler) [!FT_DEBUG_LOGGING]: Provide stubs.
2021-01-31 14:28:44 +01:00
Werner Lemberg c7cc947c0f Minor documentation fixes. 2021-01-23 15:45:10 +01:00
Werner Lemberg b6e8a71266 Update all copyright notices. 2021-01-17 07:18:48 +01:00
Dominik Röttsches 53fea87745 Add config option to test for 'COLR' v1 support in headers.
* include/freetype/config/ftoption.h (TT_SUPPORT_COLRV1): New macro
so that clients can test whether the FreeType checkout that they are
building against supports the 'COLR' v1 API.  This is intended to be
a temporary solution until 'COLR' v1 support is released in a
FreeType version and such a check can be made by using the version
number instead.
2021-01-14 16:06:03 +01:00
Dominik Röttsches d3e95d97a0 [sfnt] Register 'COLR' v1 API in driver (#59703).
* include/freetype/internal/sfnt.h (TT_Get_Color_Glyph_Paint_Func,
TT_Get_Paint_Layers_Func, TT_Get_Colorline_Stops_Func,
TT_Get_Paint_Func): New function pointer types.
(SFNT_Interface): Add them.
(FT_DEFINE_SFNT_INTERFACE): Updated.

* src/sfnt/sfdriver.c (PUT_COLOR_LAYERS_V1): New macro.
(sfnt_interface): Add new function pointers.
2021-01-14 15:56:04 +01:00
Dominik Röttsches 08dba4dc35 Add new methods required for 'COLR' v1 to public API (#59703).
* include/freetype/freetype.h (FT_Get_Color_Glyph_Paint): New method
for retrieving the root paint object for a color glyph by specifying
a glyph ID.
(FT_Get_Paint_Layers): New method for retrieving the layers of a
`PaintColorGlyph`.
(FT_Get_ColorLine_Stops): New method for retrieving the stops of a
color.
(FT_Get_Paint): New method for resolving an `FT_OpaquePaint` into an
`FT_COLR_Paint` object.
2021-01-14 15:50:37 +01:00
Dominik Röttsches f57c24db63 Add types required for 'COLR' v1 to public API (#59703).
* include/freetype/freetype.h (FT_PaintFormat, FT_ColorStopIterator,
FT_ColorIndex, FT_ColorStop, FT_PaintExtend, FT_ColorLine,
FT_Affine23, FT_CompositeMode, FT_OpaquePaint, FT_PaintColrLayers,
FT_PaintSolid, FT_PaintLinearGradient, FT_PaintRadialGradient,
FT_PaintGlyph, FT_PaintColrGlyph, FT_PaintTransformed,
FT_PaintTranslate, FT_PaintRotate, FT_PaintSkew, FT_PaintComposite,
FT_COLR_Paint): Adding structs and enum to represent paint format,
color stop information, gradient extend information, structs to
reference paint offsets, and to define transforms and compositions.
Adding a union type to represent the union of the structs,
distinguished by `FT_PaintFormat`.
2021-01-14 15:47:34 +01:00
Werner Lemberg cbc14b10e6 Fix ABI incompatibility.
* include/freetype/ftimage.h (FT_Pixel_Mode): Don't insert
`FT_PIXEL_MODE_GRAY16' but append it.

* src/base/ftobjs.c (pixel_modes): Updated.
2021-01-07 10:13:15 +01:00
Alexei Podtelezhnikov 6369058eee [dlg] Move the headers to include/dlg to simplify their use.
* autogen.sh, builds/toplevel.mk: Copy headers to incluide/dlg.
* builds/freetype.mk, builds/windows/vc2010/freetype.vcxproj:
Simplify included path.
* include/freetype/internal/ftdebug.h: Simplify #include.
* src/dlg/rules.mk, .gitignore: Updated.
2021-01-07 00:13:23 -05:00
Werner Lemberg bca740d566 Typo. 2020-12-26 08:55:49 +01:00
Werner Lemberg b6c8542dfc * src/base/ftobjs.c (pixel_modes): Updated. 2020-12-26 08:51:46 +01:00
Werner Lemberg aa1b5362d3 [sdf] Fix tracing.
* include/freetype/internal.fttrace.h: Add 'bsdf' component.

* src/sdf/ftbsdf.c, src/sdf/ftsdf.c (FT_COMPONENT): Define.
2020-12-24 08:32:04 +01:00
Anuj Verma c6f394bf7d [sdf] Add 'sdf' module to non-gnumake build systems.
* include/freetype/config/ftmodule.h: Add both the 'sfd' and 'bsfd'
renderers to the list of modules.

* CMakeLists.txt (BASE_SRCS): Add 'sdf' single-object module.
2020-12-24 07:23:48 +01:00
Anuj Verma 879ca87f0b [sdf] Add build infrastructure.
* src/sdf/module.mk, src/sfd/rules.mk: New files.

* src/sdf/ftsdf.h (ft_sdf_raster): New forward declaration.

* include/freetype/ftmoderr.h (FT_MODERRDEF): Add error definition
for the 'sdf' module.

* include/freetype/internal/fttrace.h (FT_TRACE_DEF): Add trace
definition for the `sdf' module.

* modules.cfg (RASTER_MODULES): Add the `sdf' module to the list of
rasterizers.
2020-12-24 07:23:48 +01:00
Anuj Verma ec9b6c314d Add data types required for the forthcoming 'sdf' module.
* include/freetype/freetype.h (FT_Render_Mode): Add new render mode
`FT_RENDER_MODE_SDF`, which will be used to generate SDF.

* include/freetype/ftimage.h (FT_Pixel_Mode): Add new pixel mode
`FT_PIXEL_MODE_GRAY16`, which will be the output of the 'sdf'
module.
(FT_RASTER_FLAG_SDF): New raster flag to be used internally by the
'sdf' module.

* include/freetype/fttypes.h (FT_F6Dot10): New data type.
2020-12-24 07:23:47 +01:00
Werner Lemberg 7bdf386e75 ftmodapi.h: Replace 0xA0 characters with spaces. 2020-12-17 22:47:05 +01:00
Alexei Podtelezhnikov c948df52e4 * include/freetype/ftmodapi.h (FT_FACE_DRIVER_NAME): New public macro.
The driver name is needed for `FT_Property_Set' and `FT_Property_Get'.
2020-12-17 15:53:51 -05:00
Alexei Podtelezhnikov 84b3616c94 Documentation edits. 2020-12-16 22:07:57 -05:00
Chris Liddell f6be92767d [truetype] Fix incremental metrics (#59503).
* src/truetype/ttgload.c (tt_get_metrics, load_truetype_glyph):
Previously, the code would populate the phantom points before
calling the `get_glyph_metrics` callback.  For formats like PCL XL
format 1, class 2 downloaded fonts (where metrics are removed from
the TTF header), this causes problems when the hinting program uses
the phantom points (misplaced and distorted glyphs) due to the
metrics being unset (all zeros).
(tt_get_metrics_incr_overrides): Renamed to...
(tt_get_metrics_incremental): ... this.  Updated caller

* include/freetype/ftincrem.h: Update the documentation to make it
clearer that `get_glyph_metrics` is to retrieve metrics from a
non-standard source, but *not* for the purpose of imposing custom
metrics.
2020-12-16 06:08:54 +01:00
Alexei Podtelezhnikov 9cc89717be Documentation edits. 2020-12-15 22:36:19 -05:00
Werner Lemberg 015a9b8d8f */*: s/FT_LOGGING/FT_DEBUG_LOGGING/. 2020-12-07 10:27:42 +01:00
Werner Lemberg a6adb25626 * src/*: Don't use more than one '\n' in `FT_TRACE` and `FT_ERROR`.
This ensures good logging output, with all lines having a proper
prefix (if requested).
2020-12-05 09:43:45 +01:00
Werner Lemberg fcdab61ed1 [build] Use gcc (and clang) in C99 mode.
Other compilers are unchanged.

* builds/compiler/gcc-dev.mk, builds/compiler/gcc.mk (ANSIFLAGS):
s/-ansi/-std=c99/.

* builds/freetype.mk (FT_CFLAGS): Remove `-std=c99`.

* builds/unix/configure.raw: Handle C99.
Remove no longer needed test for gcc 4.6 and earlier.
2020-12-05 09:43:42 +01:00
Werner Lemberg ce43d808dc [base] Implement vertical alignment of log printing.
Based on a patch by Priyesh.

* include/freetype/internal/fttrace.h (FT_MAX_TRACE_LEVEL_LENGTH):
New macro.

* src/base/ftdebug.c, builds/windows/ftdebug.c (ft_log_handler):
Print logs after a fixed width to handle different lengths of
`FT_COMPONENT` entries.
Use `ft_strrchr` to check for final newline character.
2020-12-04 16:19:42 +01:00
Priyesh Kumar 2a46d1f04e [base] Add public API to change log handling function.
* include/freetype/ftlogging.h (FT_Custom_Log_Handler): New function
typedef to store the custom callback logging function.
(FT_Set_Log_Handler, FT_Set_Default_Log_Handler): New functions to
set and reset custom log handler.

* include/freetype/internal/ftdebug.h (custom_output_handler): New
variable to support a custom callback logging function.
(FT_Logging_Callback): A new function typedef to print log using
custom callback logging function, which is set using
`FT_Set_Log_Handler`.
(FT_Log): Use it.

* src/base/ftdebug.c (FT_Set_Log_Handler,
FT_Set_Default_Log_Handler, FT_Logging_Callback): Add function
definitions.
2020-12-04 16:19:36 +01:00
Priyesh Kumar 5fea76cf0f [base] Add public API to change the levels of tracing components.
* include/freetype/ftlogging.h: New header file.

* include/freetype/internal/ftdebug.h [FT_LOGGING]: Include
`ftlogging.h`.

* src/base/ftdebug.c (ft_custom_trace_level): New variable.
(ft_debug_init): Update to support change of levels of tracing
components of FreeType at run-time.
(FT_Trace_Set_Level): New function to change the levels of tracing
components at run-time.
(FT_Trace_Set_Default_Level): New function to reset the levels of
tracing components back to default.
2020-12-01 09:25:53 +01:00
Priyesh Kumar d00cbc3f90 [base] Updates to print timestamp and name of `FT_COMPONENT` in logs.
* include/freetype/internal/ftdebug.h (FT_LOGGING_TAG,
FT_LOGGING_TAG_): New macros to resolve the value of `FT_COMPONENT'
into a string.
(ft_add_tag, ft_remove_tag): New functions to add and remove dlg tags.

* src/base/ftdebug.c: Add new variables to control the logging of
timestamp and name of `FT_COMPONENT` along with actual logs.
(ft_add_tag, ft_remove_tag): Add function definitions.
(ft_log_handler): Updates to print timestamp and name of
`FT_COMPONENT`.
(ft_debug_init) [FT_LOGGING]: Users can now control the logging of
timestamp and name of `FT_COMPONENT` by adding tags in the
`FT2_DEBUG` environment variable.
2020-12-01 09:25:53 +01:00
Priyesh Kumar d46bada285 [base] Add functions and variables to print logs to a file.
* include/freetype/internal/ftdebug.h: Added dlg's header files.
(FT_LOG): New macro to redirect trace logs to dlg's API's whenever
`FT_LOGGING' is defined.
(ft_logging_init, ft_logging_deinit): New functions to handle
initialization and uninitialization of logging related variables.
(ft_log_handler): New function to handle logs of FreeType.

* src/base/ftdebug.c: Add necessary logging related variables.
(ft_logging_init, ft_logging_deinit, ft_log_handler): Add function
definitions.

* src/base/ftinit.c (FT_Init_FreeType) [FT_LOGGING]: Call
`ft_logging_init`.
(FT_Done_FreeType) [FT_LOGGING]: Call `ft_logging_deinit`.

* src/base/ftobjs.c (FT_New_Library): Call `ft_debug_init` only if
`FT_LOGGING` is not defined.
2020-12-01 09:25:39 +01:00
Priyesh Kumar 34b1c897c1 [builds] Necessary changes to make 'dlg' compile.
* autogen.sh (copy_submodule_files): New script to copy all the
necessary source and include files from `submodules/dlg` to
`src/dlg`.

* src/dlg/dlgwrap.c: New wrapper file for `src/dlg.c`.  It enables
the build of 'dlg' if the `FT_LOGGING` macro is defined.

* src/dlg/rules.mk: New sub-Makefile.

* builds/freetype.mk (DLG_DIR): New variable to include the
header files of the 'dlg' library.
(INCLUDES): Add `DLG_DIR`.
(FT_CFLAGS): Add `-std=c99' flag.
Include `src/dlg/rules.mk` file to build 'dlg' library.
(OBJ_S, OBJ_M): Add `DLG_OBJS_M` and `DLG_OBJS_S`.

* builds/toplevel.mk: For builds directly from the git repository
we need to copy files from `submodule/dlg` to `src/dlg`.

* include/freetype/config/ftoption.h, devel/ftoption.h (FT_LOGGING):
New macro to enable or disable the logging facility in FreeType.
2020-12-01 09:20:32 +01:00
Jan Alexander Steffens (heftig) 22bb0660a3 Fix documentation build.
The empty line after `* @description:` caused the refdoc build to fail,
see

  https://github.com/freetype/docwriter/issues/77
2020-11-03 22:36:29 +01:00
Alexei Podtelezhnikov b049cadeb1 Mention external modules. 2020-11-02 14:26:44 -05:00
Werner Lemberg 6fca2e5b1b Minor clean-ups of last commit. 2020-10-31 06:52:18 +01:00
Alexei Podtelezhnikov 681c7e2387 Better scan converter documentation. 2020-10-30 23:03:12 -04:00
Alexei Podtelezhnikov 5cbd052dfb Add preamble. 2020-10-30 13:53:17 -04:00
Werner Lemberg e9a7015ec8 Avoid non-ASCII character in public header file. 2020-10-30 08:29:38 +01:00
Werner Lemberg 101e62a286 ftimage.h: Improve description of `FT_Span`.
From Piotr Grochowski <piotrunio-2004@wp.pl>.
2020-10-30 08:07:53 +01:00
Werner Lemberg 6a2b3e4007 * Version 2.10.4 released.
==========================

Tag sources with `VER-2-10-4'.

* docs/VERSION.TXT: Add entry for version 2.10.4.
* docs/CHANGES: Updated.

* README, src/base/ftver.rc, builds/windows/vc2010/index.html,
builds/windows/visualc/index.html,
builds/windows/visualce/index.html,
builds/wince/vc2005-ce/index.html,
builds/wince/vc2008-ce/index.html, docs/freetype-config.1:
s/2.10.3/2.10.4/, s/2103/2104/.

* include/freetype/freetype.h (FREETYPE_PATCH): Set to 4.

* builds/unix/configure.raw (version_info): Set to 23:4:17.
* CMakeLists.txt (VERSION_PATCH): Set to 4.
2020-10-20 07:13:33 +02:00
Alexei Podtelezhnikov 82d331556c Unnest markdown. 2020-10-11 21:56:50 -04:00
Werner Lemberg 337670af0a * Version 2.10.3 released.
==========================

Tag sources with `VER-2-10-3'.

* docs/VERSION.TXT: Add entry for version 2.10.3.

* README, src/base/ftver.rc, builds/windows/vc2010/index.html,
builds/windows/visualc/index.html,
builds/windows/visualce/index.html,
builds/wince/vc2005-ce/index.html,
builds/wince/vc2008-ce/index.html, docs/freetype-config.1:
s/2.10.2/2.10.3/, s/2102/2103/.

* include/freetype/freetype.h (FREETYPE_PATCH): Set to 3.

* builds/unix/configure.raw (version_info): Set to 23:3:17.
* CMakeLists.txt (VERSION_PATCH): Set to 3.
2020-10-10 18:14:57 +02:00
Werner Lemberg c9f588be56 Document changes to last release. 2020-10-10 12:48:18 +02:00
Alexei Podtelezhnikov ab6a21b733 Documentation updates. 2020-09-18 22:32:20 -04:00
Alexei Podtelezhnikov d8228a0070 Improve FT_Outline_Render docs. 2020-08-28 22:28:47 -04:00
Alexei Podtelezhnikov f9f6adb625 [truetype] Retain OVERLAP_SIMPLE and OVERLAP_COMPOUND.
For glyphs with OVERLAP_SIMPLE or OVERLAP_COMPOUND, set
FT_OUTLINE_OVERLAP to render them with direct oversampling, which
mitigates artifacts (see 3bb512bc9f).

* include/freetype/ftimage.h (FT_OUTLINE_OVERLAP): Redefine to rhyme
with OVERLAP_SIMPLE.
* src/base/ftgloadr.c (FT_GlyphLoader_Rewind): Reset outline flags.
* src/truetype/ttgload.c
(TT_Load_Simple_Glyph): Retain OVERLAP_SIMPLE.
(load_truetype_glyph): Retain OVERLAP_COMPOUND.
2020-08-05 08:24:15 -04:00
Werner Lemberg 8b3601324f Minor typos, formatting. 2020-08-04 10:48:42 +02:00
Alexei Podtelezhnikov 986a340dd5 Unbreak compilation. 2020-07-28 23:20:59 -04:00
Alexei Podtelezhnikov f76f7fdecd Hide internal functions with SunPro.
* include/freetype/internal/compiler-macros.h
(FT_INTERNAL_FUNCTION_ATTRIBUTE) <__SUNPRO_C>: Define as __hidden.
2020-07-28 23:13:51 -04:00
Anuj Verma 3273521f40 Fix static compilation with Visual C.
* include/freetype/internal/compiler-macros.h
(FT_INTERNAL_FUNCTION_ATTRIBUTE) <_WIN32>: Define as empty.
2020-07-28 18:34:37 +02:00
Werner Lemberg fffc303a7f Formatting, improving comments. 2020-07-28 18:33:15 +02:00
Werner Lemberg b7c467b6ef [doc] Stem darkening is off by default for CFF driver.
Bug reported by Ishi Tatsuyuki <ishitatsuyuki@gmail.com>.
2020-07-15 09:15:25 +02:00
David Turner 5fe7c044c2 freetype.h (FT_Set_Transform): Minor documentation update.
In order to mention the limited accuracy of `FT_Matrix' coefficients
and encourage client code to perform the transform themselves with
floating point values instead.
2020-07-14 16:25:59 +02:00
Ben Wagner b1286b32a9 Document `FT_Face_Rec_::box' with variable fonts (#54969).
As pointed out in the "Note:" in the section of

  https://docs.microsoft.com/en-us/typography/opentype/spec/otvaroverview#variation-data-tables-and-miscellaneous-requirements

  ... the xMin, yMin, xMax, yMax, macStyle and lowestRecPPEM fields in
  the font header ('head') table are not supported by variation data and
  should only be used in relation to the default instance for the font.

Document that `FT_Face_Rec_::box' does not vary with OpenType variable
fonts.
2020-07-10 18:07:11 +02:00
Werner Lemberg 96fb73efd5 Fix clang warnings.
* include/freetype/internal/autohint.h
(FT_DECLARE_AUTOHINTER_INTERFACE): New macro.
* src/autofit/afmodule.h: Use it to declare
`af_autofitter_interface'.

* include/freetype/internal/ftobjs.h (FT_DECLARE_GLYPH): New macro.
* src/base/ftbase.h: Use it to declare `ft_bitmap_glyph_class' and
`ft_outline_glyph_class'.

* src/base/ftglyph.c: Include `ftbase.h'.

* src/cff/cffparse.c (cff_parser_run): Fix type of `t2_size'.

* src/pcf/pcfdrivr.c (pcf_cmap_char_next): Fix type of `result'.

* src/psaux/psauxmod.c (psaux_module_class): Use `FT_DEFINE_MODULE'.
* src/psaux/psauxmod.h: Declare `afm_parser_funcs',
`t1_cmap_classes', `cff_decoder_funcs', and `psaux_module_class'.

* src/pshinter/pshmod.c: Include `pshmod.h'.

* src/sfnt/sfwoff2.c (ROUND4, WRITE_SHORT): Fix implicit sign
conversion.
(compute_ULong_sum): Fix return type.
Fix implicit sign conversion.
(store_points): Fix type of `last_flag', `repeat_count', and `flag'.
Use casts to avoid warnings.
(reconstruct_glyf): Fix implicit sign conversion.
Use cast to avoid warning.
(get_x_mins): Fix implicit sign conversion.
* src/sfnt/ttcmap.c: Undef `TTCMAPCITEM'.
* src/sfnt/ttcmap.h: Define `TTCMAPCITEM' and include `ttcmapc.h' to
declare cmap classes.

* src/smooth/ftsmooth.c (ft_smooth_overlap_spans): Use cast.

* src/truetype/ttinterp.c (Ins_MIAP): Fix typo.
2020-07-07 16:58:14 +02:00
David Turner 0f35b042e0 [build] Really fix multi and C++ builds.
The following builds were still failing due to previous changes:

  make multi
  make multi CC="c++"
  make CC="c++"

This patch fixes the issues, which were missing includes to get the
right macro definitions in multi-build mode.

Also, `FT_UNUSED' is actually used by third-party code, so move it
back to `public-macros.h' to avoid breaking it.

* include/freetype/config/public-macros.h (FT_EXPORT): Remove
special definition for C++.
(FT_UNUSED): Define here instead of...
* include/freetype/config/compiler-macros.h: ... here.
(FT_FUNCTION_DECLARATION): Remove special definition for C++.
(FT_LOCAL_ARRAY_DEF): Fix definition.

* src/cache/ftccback.h, src/lzw/ftzopen.h, src/gxvalid/gxvmort.h,
src/gxvalid/gxvmorx.h: Add `FT_BEGIN_HEADER' and `FT_END_HEADER'.
2020-07-07 06:51:09 +02:00
David Turner cb4a943bc4 [build] Fix multi and C++ builds.
The following builds were failing due to previous changes:

  make multi
  make multi CC="c++"

* include/freetype/config/ftconfig.h: Remove `FT_END_HEADER'.

* include/freetype/config/ftheader.h (FT_BEGIN_HEADER,
FT_END_HEADER): Protect against redefinition.

* src/cache/ftccache.h, src/cache/ftcmru.h, src/pcf/pcfutil.h,
src/psaux/pserror.h, src/psaux/psft.h, src/psaux/psstack.h,
src/sfnt/woff2tags.h: Include `compiler-macros.h'.

* src/sfnt/woff2tags.c: Include `woff2tags.h'.
2020-07-06 11:49:00 +02:00
David Turner b0667d2d36 [build] Improve visibility support of library function names.
* include/freetype/config/public-macros.h
(FT_PUBLIC_FUNCTION_ATTRIBUTE): New macro to tag functions as
public (and thus exportable).
(FT_EXPORT): Use it.

* include/freetype/config/compiler-macros.h
(FT_INTERNAL_FUNCTION_ATTRIBUTE): New macro to tag functions as
internal to the library (and thus hidden).  Note that on ELF
systems, all internal functions have hidden visibility, which avoids
the need to enforce this when invoking the compiler (e.g., with an
option like `-fvisibility=hidden').

(FT_FUNCTION_DECLARATION, FT_FUNCTION_DEFINITION): New base macros
to deal with C and C++ linkage issues at the same time.

(FT_LOCAL, FT_LOCAL_DEF, FT_LOCAL_ARRAY, FT_LOCAL_ARRAY_DEF,
FT_BASE, FT_BASE_DEF, FT_EXPORT_VAR, FT_BASE_CALLBACK,
FT_BASE_CALLBACK_DEF): Redefined using new macros.
2020-07-05 11:03:23 +02:00
David Turner bb66c8d8cf [build] Split off more stuff from `ftconfig.h'.
* builds/unix/ftconfig.h.in, builds/vms/ftconfig.h,
include/freetype/config/ftconfig.h: Split off macro definitions
required by the FreeType API headers to...
* include/freetype/config/public-macros.h: ...this new file.

* builds/unix/ftconfig.h.in, builds/vms/ftconfig.h,
include/freetype/config/ftconfig.h: Split off macro definitions used
by the library but not to be exposed to clients to...
* include/freetype/config/compiler-macros.h: ...this new file.

* include/freetype/internal/*.h, src/raster/ftraster.h: Include
`compiler-macros.h' where needed.
2020-07-05 10:42:23 +02:00
David Turner 0322efb5e5 [build] Move mac support code to `mac-support.h'.
* builds/unix/ftconfig.h.in, builds/vms/ftconfig.h,
include/freetype/config/ftconfig.h: Split off mac-specific stuff
to...
* include/freetype/config/mac-support.h: ...this new file.

* CMakeLists.txt, builds/unix/configure.raw: Remove `/undef ->
#undef' string replacement; the affected code is no longer part of
the `ftconfig.h' template.
2020-07-05 09:59:29 +02:00
David Turner bd7251ac97 [build] Put integer type definitions into `integer-types.h'.
Refactor some of the `ftconfig.h' headers and template to move the
definition of the FreeType integer types (e.g., `FT_Int16') to a
common header file `freetype/config/integer-types.h'.

* builds/unix/ftconfig.h.in, builds/vms/ftconfig.h,
include/freetype/config/ftconfig.h: Split off integer type
definition stuff to...
* include/freetype/config/integer-types.h: ...this new file.

* builds/unix/ftconfig.h.in: Control the definition of
`FT_SIZEOF_INT' and `FT_SIZEOF_LONG' with macro
`FT_USE_AUTOCONF_SIZEOF_TYPES'.  If these are not defined, auto
detection happens in `integer-types.h' as usual based on `INTXX_MAX'
values.  Otherwise the autoconf-detected values are used.

* builds/unix/configure.raw (CPPFLAGS): Don't include path to
`config' directory.  Instead, ...
(FT_CONFIG_STANDARD_LIBRARY_H): Use complete path.
2020-07-05 09:52:23 +02:00
Alexei Podtelezhnikov 3bb512bc9f [smooth] Introduce direct oversampling for overlaps.
This implements oversampling to metigate artifacts in pixels partially
covered by overlapping contours.  It turns out that the 4x4
oversampling is sufficient but, at least, quadruples the rendering
time.  The outline has to set FT_OUTLINE_OVERLAP to use this method.

* include/freetype/ftimage.h (FT_OUTLINE_OVERLAP): New flag.
* src/smooth/ftsmooth.c (ft_smooth_render): Check it to...
(ft_smooth_raster_overlap): ... inflate outline and set up direct
rendering for oversampling with...
(ft_smooth_overlap_spans): ... new span function that integrates them.
2020-07-03 22:29:34 -04:00
Alexei Podtelezhnikov de088b1dfd Simplify unused macro. 2020-06-19 22:46:30 -04:00
Werner Lemberg 1658685967 Remove redundant inclusion of `ft2build.h'.
* */*: Remove `#include <ft2build.h>' where possible.

* include/freetype/freetype.h: Remove cpp error about missing
inclusion of `ft2build.h'.
2020-06-13 21:15:45 +02:00
David Turner e13391333f Make macros for header file names optional.
We no longer have to take care of the 8.3 file name limit; this
allows us (a) to introduce longer, meaningful file names, and (b) to
avoid macro names in `#include' lines altogether since some
compilers (most notably Visual C++) doesn't support this properly.

*/*: Replace

   #include FOO_H

with

   #include <freetype/foo.h>

or something similar.  Also update the documentation.
2020-06-08 13:31:55 +02:00
David Turner 4eee13404d Remove Jamfile files from the tree.
These have not been used in a very, very long time, so better remove
them.  A corresponding patch will be submitted to the
`freetype2-demos' repository.

* src/Jamfile, src/*/Jamfile, Jamrules: Delete.
2020-05-18 17:56:06 +02:00
Alexei Podtelezhnikov 3f70e6d20c [smooth] Turn on LCD filtering during FreeType initialization.
* src/smooth/ftsmooth.c (ft_smooth_init): Enable LCD filtering.

* include/freetype/ftlcdfil.h: Document it, remove patent warnings.
* include/freetype/freetype.h (FT_Render_Mode): Updated.
* include/freetype/config/ftoption.h, devel/ftoption.h
[FT_CONFIG_OPTION_SUBPIXEL_RENDERING]: Do not mention patents.
2020-05-12 00:38:46 -04:00
Alexei Podtelezhnikov 652f886319 [smooth] Stop using dedicated LCD modules and classes.
The LCD modules were never truly independent. They mostly served as
a way to disable patented LCD rendering, which is no longer necessary.
The `smooth' module now handles LCD modes as well.

* src/smooth/ftsmooth.c (ft_smooth_lcd_renderer_class.
ft_smooth_lcdv_renderer_class): Deleted.
(ft_render_smooth): Reworked from `ft_render_smooth_generic'.
* src/smooth/ftsmooth.h: Remove dedicated LCD classes.
* src/smooth/module.mk: Remove dedicated LCD modules.
* include/freetype/config/ftmodule.h: Ditto.
* builds/amiga/include/config/ftmodule.h: Ditto.
* include/freetype/ftmodapi.h: Do not mention LCD modules.
2020-05-11 23:30:37 -04:00
Werner Lemberg 132f19b779 * Version 2.10.2 released. ==========================
Tag sources with `VER-2-10-2'.

* docs/VERSION.TXT: Add entry for version 2.10.2.

* README, Jamfile (RefDoc), src/base/ftver.rc,
builds/windows/vc2010/index.html, builds/windows/visualc/index.html,
builds/windows/visualce/index.html,
builds/wince/vc2005-ce/index.html,
builds/wince/vc2008-ce/index.html, docs/freetype-config.1:
s/2.10.1/2.10.2/, s/2101/2102/.

* include/freetype/freetype.h (FREETYPE_PATCH): Set to 2.

* builds/unix/configure.raw (version_info): Set to 23:2:17.
* CMakeLists.txt (VERSION_PATCH): Set to 2.

* docs/CHANGES: Updated.
2020-05-09 07:09:40 +02:00
Werner Lemberg 141da02816 Make `FT_HAS_*' and `FT_IS_*' really return true (#57906).
* include/freetype/freetype.h (FT_HAS_*, FT_IS_*): Implement it.
2020-02-27 09:49:06 +01:00
Werner Lemberg e5038be704 Update all copyright notices. 2020-01-19 17:05:19 +01:00