and the image buffer.
State has been moved inside the library structure. A new hook
function has been added to query the size needed for the state
structure and this allocation is performed by FT. Memory alloc.
for the image buffer is also being done by FT so that it can later
free it easily.
* include/freetype/svgrenderer.h: Small doc fixes. Addition of two
new hooks. `SVG_Lib_Get_State_Size' and `SVG_Lib_Get_Buffer_Size'.
* src/base/ftglyph.c (FT_Glyph_To_Bitmap): Small bug fix. Memory
was being initialized before library.
* src/base/ftobjs.c (FT_Set_Svg_Hooks): Adjust the code for new
hook functions.
* src/svg/ftsvg.c: Adjust the code for new hook functions. Perform
all memory allocations needed by the rendering port from FreeType
side.
* src/svg/svgtypes.c: Add the new hooks in the hook structure.
A field `units_per_EM' is added to `FT_SVG_DocumentRec' and
`FT_SvgGlyphRec'. This is needed because the renderer needs this
info to properly scale the SVGs if the viewbox width and height
differ from `face->units_per_EM'. Face object can't be accessed
because of the restrictions put by `FT_Glyph_To_Bitmap' thus this
has to be provided separately just like `metrics'.
* include/freetype/internal/ftobjs.h: Create a new flag named
`FT_GLYPH_OWN_GZIP_SVG' to indicate that `svg_document' in
`slot->other' is GZIP compressed and has to be freed later.
* src/base/ftglyph.c: Minor styling.
* src/base/ftobjs.c: Add code to free memory that was previously
allocated for storing GZIP compressed SVG documents.
* src/sfnt/ttsvg.c: Set the `FT_GLYPH_OWN_GZIP_SVG' flag if the
document is GZIP compressed.
* include/freetype/freetype.h: Add `FT_FACE_FLAG_SVG' to indicate
the presence of an SVG table in the face.
* src/base/ftobjs.c (ft_glyphslot_init): Allocate memory for
`FT_SVG_Document' in `slot->other' if an SVG table exists in the
face.
(ft_glyphslot_clear): Clear `slot->other' only if the font doesn't
have an SVG table.
(ft_glyphslot_done): Free the memory at `slot->other' if the face
has an SVG table.
* src/base/ttsvg.c (tt_face_load_svg): Set `FT_FACE_FLAG_SVG'.
(tt_face_load_svg_doc): Don't allocate the memory.
* src/base/ftobjs.c (FT_Load_Glyph): Use the recrusive call with
`FT_LOAD_NO_SCALE' so that the loaded data is unscaled.
* src/base/ftobjs.c (FT_Render_Glyph_Internal): Change the format
to bitmap once an SVG glyph is successfully rendered.
* src/sfnt/ttsvg.c (tt_face_load_svg_doc): Make sure metrics are
grabbed. Scale `horiAdvance' and `vertAdvance' properly and
convert them to 26.6 format.
This is necessary because the document itself contains no
sizing information. Outline glyphs encapsulate the sizing
information in the outlines by scaling them. That is not
possible here. One could access them from the face object
reference inside a glyph slot, but when the function
`FT_Glyph_To_Bitmap' creates a dummy slot it can not put
a face object reference in it. Thus, it's better to store
the size information here.
* include/freetype/config/ftheader.h: New macro `FT_SVG_RENDERER_H'
for `freetype/svgrenderer.h'.
* include/freetype/svgrenderer.h: New file to store SVG specific
function types, SVG interface and `FT_Set_Svg_Hooks'.
* src/base/ftobjs.c: Adds implementation of `FT_Set_Svg_Hooks'.
* src/svg/ftsvg.c: Creates `svg_renderer_interface'.
* src/svg/svgtypes.c: Moves hook function types to
`FT_SVG_RENDERER_H'. Adds a hook for svg rendering. Temporary.
As originally intended, a Type 1 SEAC charstring would be used for
an accented glyph (like `acaron' or `uumlaut'), where the advance
width of the SEAC glyph is the same as that of the `base' glyph
(like `a' or `u'). In this case it is not uncommon for the SEAC
glyph to not use an (H)SBW opcode of its own but to rely on the
value from the base glyph.
However, out-of-spec fonts also use SEAC glyphs for ligatures (like
`oe' or `fi'), and in those cases the overall advance width is
greater than that of the `base' glyph. For this reason we have to
allow that the SEAC glyph can have an (H)SBW value of its own, and
if it has, retain this value, rather than the one from the base
glyph.
* src/psaux/psintrp.c (cf2_interpT2CharString) <cf2_escSEAC>:
Implement it.
==========================
Tag sources with `VER-2-10-1'.
* docs/VERSION.TXT: Add entry for version 2.10.1.
* README, Jamfile (RefDoc), src/base/ftver.rc,
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/2.10.0/2.10.1/, s/2100/2101/.
* include/freetype/freetype.h (FREETYPE_PATCH): Set to 1.
* builds/unix/configure.raw (version_info): Set to 23:1:17.
* CMakeLists.txt (VERSION_PATCH): Set to 1.
* include/freetype/fterrors.h (FT_Error_String): Fix C++ compilation.
* src/autofit/afglobal.c (af_face_global_get_metrics): Start again
(with dummy hinter module) if no blue zones are present.
* src/autofit/aflatin.c (af_latin_metrics_init_blues): Change
signature to return error code.
If no blue zones are found, update `glyph_styles' array to hold
AF_STYLE_NONE_DFLT instead of the current style.
(af_latin_metrics_init): Return internal error code if no blue zones
are found.
More to come.
* builds/vms/LIBS.OPT_IA64, builds/vms/_LINK.OPT_IA64,
builds/vms/vmslib.dat: New files provided by Jouk Jansen
<joukj@hrem.nano.tudelft.nl>.
* builds/vms/ftconfig.h: Update, also from Jouk.
The buffer size FT_MAX_GRAY_SPANS is set to 10 spans, which should be
enough to cover the entire scanline for simple glyphs in most cases:
each slightly slanted edge needs up to two spans, plus a filling span
in-between. This is not new, we used to do it before cb4388783c.
* src/smooth/ftgrays.c (gray_TWorker): Add `spans' and `num_spans'.
(gray_hline, gray_sweep): Implement the span buffering.
(gray_raster_render): Use negative `num_spans' to avoid the direct
mode.
Moazin Khatti