we should not cache visited langsys cause 2 different Record<Langsys>
could have different Tag while pointing to the same Langsys, a langsys
is redundant in Record<Langsys> A does not mean it's redundant in Record
B. Same thing for visited_script.
Also adding the number of features in the LangSys's feature list to the
visited langsys count so it's more accurate.
Plus some improvement in langsys compare()
For BASE table format 1.1, the handling of design
space vs user space coordinates was inconsistent.
We were applying design -> user transformation
twice for the deltas, leading to wrong baseline
values.
Patch by Ebrahim Byagowi <ebrahim@gnu.org>
Fixes: #3476
Found via `codespell -q 3 -S ./perf/texts -L actualy,als,ba,beng,clen,crasher,dependant,eachother,fo,gir,inout,ist,nd,ned,ot,pres,ro,statics,te,teh,timne`
Add a freetype identifier in the 'provides' section so that the fallback will
kick in if FreeType is requested but was not found, and wrap mode is not
disabled.
Nowadays Meson has much better CMake support which we can use to find
dependencies on Visual Studio builds (and Visual Studio 2017 and later provides
CMake as an optional install item), so we can use it to help us find ICU-UC
on Visual Studio builds, since CMake has built-in support for finding it by
the components we need for some time.
Nowadays, CMake is much better supported with Meson and is a common tool on
Windows (it is even an optionally-installed item for Visual Studio 2017+), so
make use of that to find FreeType. The package to search for, however, is
`freetype` instead of `freetype2`.
Add HB_OT_LAYOUT_BASELINE_TAG_IDEO_EMBOX_CENTRAL
and HB_OT_LAYOUT_BASELINE_TAG_IDEO_FACE_CENTRAL
which are the centers of the ideographic em-box
and face box.
Add a variation of hb_ot_layout_get_baseline that
synthesizes missing baselines, using heuristics in part
taken from the CSS Inline Layout Module, Level 3.
Includes some new tests for synthesized baselines.
The base2.ttf is a subset of Noto Sans Bengali that
includes just the Bengali Ka.
New API: hb_ot_layout_get_baseline_with_fallback
[Boring Expansion] >64k loca & hmtx tables
This does two things:
The num-glyphs reported by the face now is the maximum reported by the maxp and that deduced from the length of the loca table; I think this is the right thing to do anyway; According to OpenType such loca tables are invalid.
The interpretation hmtx tables that have excessive bytes at the end, again, invalid according to OpenType, has changed. Previously we were interpreting those excessive bytes as extra lsb values. Now we interpret them as extra advance values, the last of which is repeated for all missing glyphs. Again, these are tables that are invalid according to OpenType, and the advances are for glyph indices beyond maxp table's num-glyphs.
The combined effect is that the font can have shapes and advances for gid's beyond the maxp limit of 64k. In fact, maxp table becomes optional.
Qunxin Liu
Behdad Esfahbod
Dominik Röttsches
David Corbett
Khaled Hosny
Matthias Clasen
Florian Pircher
luz paz
Garret Rieger
James Hilliard
Chun-wei Fan