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[unsafe-to-concat] Mark entire buffer unsafe-to-concat if kerx format2

This commit is contained in:
Behdad Esfahbod 2022-01-20 15:51:04 -07:00
parent 60006d3687
commit c0058892be
2 changed files with 15 additions and 7 deletions
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1
src/hb-aat-layout-kerx-table.hh
View File

@ -406,6 +406,7 @@ struct KerxSubTableFormat2
accelerator_t accel (*this, c);
hb_kern_machine_t<accelerator_t> machine (accel, header.coverage & header.CrossStream);
machine.kern (c->font, c->buffer, c->plan->kern_mask);
c->buffer->set_glyph_flags (HB_GLYPH_FLAG_UNSAFE_TO_CONCAT);
return_trace (true);
}

21
src/hb-buffer.hh
View File

@ -386,12 +386,15 @@ struct hb_buffer_t
HB_INTERNAL void delete_glyph ();
void set_glyph_flags (unsigned start,
unsigned end,
hb_mask_t mask,
void set_glyph_flags (hb_mask_t mask,
unsigned start = 0,
unsigned end = (unsigned) -1,
bool interior = false,
bool from_out_buffer = false)
{
if (end == (unsigned) -1)
end = len;
if (interior && !from_out_buffer && end - start < 2)
return;
@ -435,22 +438,26 @@ struct hb_buffer_t
void unsafe_to_break (unsigned int start, unsigned int end)
{
set_glyph_flags (start, end, HB_GLYPH_FLAG_UNSAFE_TO_BREAK | HB_GLYPH_FLAG_UNSAFE_TO_CONCAT,
set_glyph_flags (HB_GLYPH_FLAG_UNSAFE_TO_BREAK | HB_GLYPH_FLAG_UNSAFE_TO_CONCAT,
start, end,
true);
}
void unsafe_to_concat (unsigned int start, unsigned int end)
{
set_glyph_flags (start, end, HB_GLYPH_FLAG_UNSAFE_TO_CONCAT,
set_glyph_flags (HB_GLYPH_FLAG_UNSAFE_TO_CONCAT,
start, end,
true);
}
void unsafe_to_break_from_outbuffer (unsigned int start, unsigned int end)
{
set_glyph_flags (start, end, HB_GLYPH_FLAG_UNSAFE_TO_BREAK | HB_GLYPH_FLAG_UNSAFE_TO_CONCAT,
set_glyph_flags (HB_GLYPH_FLAG_UNSAFE_TO_BREAK | HB_GLYPH_FLAG_UNSAFE_TO_CONCAT,
start, end,
true, true);
}
void unsafe_to_concat_from_outbuffer (unsigned int start, unsigned int end)
{
set_glyph_flags (start, end, HB_GLYPH_FLAG_UNSAFE_TO_CONCAT,
set_glyph_flags (HB_GLYPH_FLAG_UNSAFE_TO_CONCAT,
start, end,
true, true);
}