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[unsafe-to-break] Fix unsafe-to-break for cluster-level=1 

Fixes tests/shaping/tests/cluster.tests
This commit is contained in:
Behdad Esfahbod 2017-09-04 20:04:59 -07:00
parent 61a9d7e6d0
commit 7cc348041d
1 changed files with 11 additions and 6 deletions
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13
src/hb-ot-shape.cc
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@ -275,8 +275,7 @@ hb_insert_dotted_circle (hb_buffer_t *buffer, hb_font_t *font)
static void
hb_form_clusters (hb_buffer_t *buffer)
{
if (!(buffer->scratch_flags & HB_BUFFER_SCRATCH_FLAG_HAS_NON_ASCII) ||
buffer->cluster_level != HB_BUFFER_CLUSTER_LEVEL_MONOTONE_GRAPHEMES)
if (!(buffer->scratch_flags & HB_BUFFER_SCRATCH_FLAG_HAS_NON_ASCII))
return;
/* Loop duplicated in hb_ensure_native_direction(), and in _hb-coretext.cc */
@ -288,11 +287,17 @@ hb_form_clusters (hb_buffer_t *buffer)
if (likely (!HB_UNICODE_GENERAL_CATEGORY_IS_MARK (_hb_glyph_info_get_general_category (&info[i])) &&
!_hb_glyph_info_is_joiner (&info[i])))
{
if (buffer->cluster_level == HB_BUFFER_CLUSTER_LEVEL_MONOTONE_GRAPHEMES)
buffer->merge_clusters (base, i);
else
buffer->unsafe_to_break (base, i);
base = i;
}
}
if (buffer->cluster_level == HB_BUFFER_CLUSTER_LEVEL_MONOTONE_GRAPHEMES)
buffer->merge_clusters (base, count);
else
buffer->unsafe_to_break (base, count);
}
static void
@ -580,8 +585,6 @@ hb_ot_substitute_default (hb_ot_shape_context_t *c)
{
hb_buffer_t *buffer = c->buffer;
hb_ot_shape_initialize_masks (c);
hb_ot_mirror_chars (c);
HB_BUFFER_ALLOCATE_VAR (buffer, glyph_index);
@ -836,8 +839,10 @@ hb_ot_shape_internal (hb_ot_shape_context_t *c)
c->buffer->clear_output ();
hb_ot_shape_initialize_masks (c);
hb_set_unicode_props (c->buffer);
hb_insert_dotted_circle (c->buffer, c->font);
hb_form_clusters (c->buffer);
hb_ensure_native_direction (c->buffer);