HB_GLYPH_FLAG_UNSAFE_TO_BREAK means that the glyph with this flag is somehow affected by the previous logical glyph (the previous index in the buffer if ltr and the next index if the buffer is rtl). If these two glyphs are separated by a break (line or otherwise) then the underlying text should be re-shaped on both sides up to corresponding position in the text of some glyph not marked with this flag.
New API:
HB_BUFFER_FLAG_REMOVE_DEFAULT_IGNORABLES
hb-shape / hb-view --remove-default-ignorables
One more text-rendering-tests test passing. Eleven failing.
* hb-buffer.h: Mark hb_buffer_diff() for export
This will fix the tools builds on Visual Studio, as the symbol is used
by the tools.
* build: Adapt NMake Makefiles for GLib 2.53.4 or later
glib-mkenums was ported from a PERL script to a Python script, so we
need to update how we generate the enum sources for HarfBuzz-GObject in
the NMake builds. Let this be known in the build documentation for MSVC
builds.
One of the problems with the underlying cmd.exe that the NMake Makefiles
run on is that shebang lines are not recognized, so we need to to test
run the script with Python and see whether it succeeded by outputing a
source file that is larger than 0 in file size (since running the PERL
version of the script will clearly fail and cause an empty file to be
created).
If it succeeds, we then run a small Python utility script that makes the
necessary string replacements, and we are done. If that fails, then we
run the glib-mkenums script with PERL, and do the replacements with the
PERL one-liners as we did before.
We need to make replace.py use latin-1 encoding when using Python 3.x to
cope with the copyright sign that is in the generated enum sources.
Currently just announces lookup applications. Message-API *will* change.
hb-shape / hb-view are updated to print-out messages to stder if --debug
is specified.
This prepares the headers for exporting symbols using visibility
attributes or __declspec(dllexport), so that we do not need to maintain
symbols listing files, as this is what was and is done in GLib and GTK+.
This is by no ways to promote non-Unicode encodings. This is an entry
point that takes Unicode codepoints that happen to all be the first
256 characters and hence fit in 8bit strings. This is useful eg in Chrome
where strings that can fit in 8bit are implemented that way, and this
avoids copying into UTF-8 or UTF-16.
Perhaps we should rename this to hb_buffer_add_codepoints8(). I'm also
curious if anyone would be really interested in hb_buffer_add_codepoints16().
Please discuss!
With this change, we now by default replace broken UTF-8/16/32 bits
with U+FFFD. This can be changed by calling new API on the buffer.
Previously the replacement value used to be (hb_codepoint_t)-1.
Note that hb_buffer_clear_contents() does NOT reset the replacement
character.
See discussion here:
6f13b6d62d
New API:
hb_buffer_set_replacement_codepoint()
hb_buffer_get_replacement_codepoint()
API additions:
hb_segment_properties_t
HB_SEGMENT_PROPERTIES_DEFAULT
hb_segment_properties_equal()
hb_segment_properties_hash()
hb_buffer_set_segment_properties()
hb_buffer_get_segment_properties()
hb_ot_layout_glyph_class_t
hb_shape_plan_t
hb_shape_plan_create()
hb_shape_plan_create_cached()
hb_shape_plan_get_empty()
hb_shape_plan_reference()
hb_shape_plan_destroy()
hb_shape_plan_set_user_data()
hb_shape_plan_get_user_data()
hb_shape_plan_execute()
hb_ot_shape_plan_collect_lookups()
API changes:
Rename hb_ot_layout_feature_get_lookup_indexes() to
hb_ot_layout_feature_get_lookups().
New header file:
hb-shape-plan.h
And a bunch of prototyped but not implemented stuff. Coming soon.
(Tests fail because of the prototypes right now.)
Khaled Hosny
Eric Muller
Behdad Esfahbod
bungeman
Bruce Mitchener
fanc999
Jonathan Kew
Chun-wei Fan