763e5466c0
Previously, we expected users to provide BOT/EOT flags when the
text *segment* was at paragraph boundaries. This meant that for
clients that provide full paragraph to HarfBuzz (eg. Pango), they
had code like this:
hb_buffer_set_flags (hb_buffer,
(item_offset == 0 ? HB_BUFFER_FLAG_BOT : 0) |
(item_offset + item_length == paragraph_length ?
HB_BUFFER_FLAG_EOT : 0));
hb_buffer_add_utf8 (hb_buffer,
paragraph_text, paragraph_length,
item_offset, item_length);
After this change such clients can simply say:
hb_buffer_set_flags (hb_buffer,
HB_BUFFER_FLAG_BOT | HB_BUFFER_FLAG_EOT);
hb_buffer_add_utf8 (hb_buffer,
paragraph_text, paragraph_length,
item_offset, item_length);
Ie, HarfBuzz itself checks whether the segment is at the beginning/end
of the paragraph. Clients that only pass item-at-a-time to HarfBuzz
continue not setting any flags whatsoever.
Another way to put it is: if there's pre-context text in the buffer,
HarfBuzz ignores the BOT flag. If there's post-context, it ignores
EOT flag.
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| docs | ||
| m4 | ||
| src | ||
| test | ||
| util | ||
| .travis.yml | ||
| AUTHORS | ||
| Android.mk | ||
| COPYING | ||
| Makefile.am | ||
| NEWS | ||
| README | ||
| THANKS | ||
| TODO | ||
| autogen.sh | ||
| configure.ac | ||
| git.mk | ||
| harfbuzz.doap | ||
README
This is HarfBuzz, a text shaping library. For bug reports, mailing list, and other information please visit: http://harfbuzz.org/ For license information, see the file COPYING.