return face->table.GDEF->table->get_glyphs_in_class (klass, glyphs);
}
-
#ifndef HB_NO_LAYOUT_UNUSED
/**
* hb_ot_layout_get_attach_points:
unsigned int *caret_count /* IN/OUT */,
hb_position_t *caret_array /* OUT */)
{
- unsigned int result_caret_count = 0;
+ unsigned int result_caret_count = caret_count ? *caret_count : 0;
unsigned int result = font->face->table.GDEF->table->get_lig_carets (font, direction, glyph, start_offset, &result_caret_count, caret_array);
if (result)
{
#ifdef HB_NO_OT_LAYOUT_BLACKLIST
return false;
#endif
-
-#ifndef HB_NO_AAT_SHAPE
- /* Mac OS X prefers morx over GSUB. It also ships with various Indic fonts,
- * all by 'MUTF' foundry (Tamil MN, Tamil Sangam MN, etc.), that have broken
- * GSUB/GPOS tables. Some have GSUB with zero scripts, those are ignored by
- * our morx/GSUB preference code. But if GSUB has non-zero scripts, we tend
- * to prefer it over morx because we want to be consistent with other OpenType
- * shapers.
- *
- * To work around broken Indic Mac system fonts, we ignore GSUB table if
- * OS/2 VendorId is 'MUTF' and font has morx table as well.
- *
- * https://github.com/harfbuzz/harfbuzz/issues/1410
- * https://github.com/harfbuzz/harfbuzz/issues/1348
- * https://github.com/harfbuzz/harfbuzz/issues/1391
- */
- if (unlikely (face->table.OS2->achVendID == HB_TAG ('M','U','T','F') &&
- face->table.morx->has_data ()))
- return true;
-#endif
-
return false;
}
switch (table_tag) {
case HB_OT_TAG_GSUB: return *face->table.GSUB->table;
case HB_OT_TAG_GPOS: return *face->table.GPOS->table;
- default: return Null(OT::GSUBGPOS);
+ default: return Null (OT::GSUBGPOS);
}
}
hb_tag_t table_tag,
unsigned int script_index,
unsigned int language_index,
- unsigned int *feature_index)
+ unsigned int *feature_index /* OUT */)
{
return hb_ot_layout_language_get_required_feature (face,
table_tag,
* @table_tag: HB_OT_TAG_GSUB or HB_OT_TAG_GPOS
* @script_index: The index of the requested script tag
* @language_index: The index of the requested language tag
- * @feature_index: The index of the requested feature
+ * @feature_index: (out): The index of the requested feature
* @feature_tag: (out): The #hb_tag_t of the requested feature
*
* Fetches the tag of a requested feature index in the given face's GSUB or GPOS table,
hb_tag_t table_tag,
unsigned int script_index,
unsigned int language_index,
- unsigned int *feature_index,
- hb_tag_t *feature_tag)
+ unsigned int *feature_index /* OUT */,
+ hb_tag_t *feature_tag /* OUT */)
{
const OT::GSUBGPOS &g = get_gsubgpos_table (face, table_tag);
const OT::LangSys &l = g.get_script (script_index).get_lang_sys (language_index);
hb_set_t *feature_indexes_)
: g (get_gsubgpos_table (face, table_tag)),
feature_indexes (feature_indexes_),
- script_count(0),langsys_count(0) {}
+ script_count (0),langsys_count (0), feature_index_count (0) {}
bool visited (const OT::Script &s)
{
return visited (l, visited_langsys);
}
+ bool visited_feature_indices (unsigned count)
+ {
+ feature_index_count += count;
+ return feature_index_count > HB_MAX_FEATURE_INDICES;
+ }
+
private:
template <typename T>
bool visited (const T &p, hb_set_t &visited_set)
hb_set_t visited_langsys;
unsigned int script_count;
unsigned int langsys_count;
+ unsigned int feature_index_count;
};
static void
if (!features)
{
/* All features. */
- if (l.has_required_feature ())
+ if (l.has_required_feature () && !c->visited_feature_indices (1))
c->feature_indexes->add (l.get_required_feature_index ());
- l.add_feature_indexes_to (c->feature_indexes);
+ if (!c->visited_feature_indices (l.featureIndex.len))
+ l.add_feature_indexes_to (c->feature_indexes);
}
else
{
for (hb_codepoint_t feature_index = HB_SET_VALUE_INVALID;
hb_set_next (&feature_indexes, &feature_index);)
g.get_feature (feature_index).add_lookup_indexes_to (lookup_indexes);
+
+ g.feature_variation_collect_lookups (&feature_indexes, lookup_indexes);
}
+#ifdef HB_EXPERIMENTAL_API
+/**
+ * hb_ot_layout_closure_lookups:
+ * @face: #hb_face_t to work upon
+ * @table_tag: HB_OT_TAG_GSUB or HB_OT_TAG_GPOS
+ * @lookup_indexes: (inout): lookup_indices collected from feature
+ * list
+ *
+ * Returns all inactive lookups reachable from lookup_indices
+ *
+ * Since: EXPERIMENTAL
+ **/
+void
+hb_ot_layout_closure_lookups (hb_face_t *face,
+ hb_tag_t table_tag,
+ const hb_set_t *glyphs,
+ hb_set_t *lookup_indexes /* IN/OUT */)
+{
+ hb_set_t visited_lookups, inactive_lookups;
+ OT::hb_closure_lookups_context_t c (face, glyphs, &visited_lookups, &inactive_lookups);
+
+ for (unsigned lookup_index : + hb_iter (lookup_indexes))
+ {
+ switch (table_tag)
+ {
+ case HB_OT_TAG_GSUB:
+ {
+ const OT::SubstLookup& l = face->table.GSUB->table->get_lookup (lookup_index);
+ l.closure_lookups (&c, lookup_index);
+ break;
+ }
+ case HB_OT_TAG_GPOS:
+ {
+ const OT::PosLookup& l = face->table.GPOS->table->get_lookup (lookup_index);
+ l.closure_lookups (&c, lookup_index);
+ break;
+ }
+ }
+ }
+
+ hb_set_union (lookup_indexes, &visited_lookups);
+ hb_set_subtract (lookup_indexes, &inactive_lookups);
+}
+
+/**
+ * hb_ot_layout_closure_features:
+ * @face: #hb_face_t to work upon
+ * @table_tag: HB_OT_TAG_GSUB or HB_OT_TAG_GPOS
+ * @lookup_indexes: (in): collected active lookup_indices
+ * @feature_indexes: (out): all active feature indexes collected
+ *
+ * Returns all active feature indexes
+ *
+ * Since: EXPERIMENTAL
+ **/
+void
+hb_ot_layout_closure_features (hb_face_t *face,
+ hb_tag_t table_tag,
+ const hb_map_t *lookup_indexes, /* IN */
+ hb_set_t *feature_indexes /* OUT */)
+{
+ const OT::GSUBGPOS &g = get_gsubgpos_table (face, table_tag);
+ g.closure_features (lookup_indexes, feature_indexes);
+}
+#endif
+
#ifndef HB_NO_LAYOUT_COLLECT_GLYPHS
/**
* @lookup_index: The index of the feature lookup to query
* @glyphs_before: (out): Array of glyphs preceding the substitution range
* @glyphs_input: (out): Array of input glyphs that would be substituted by the lookup
- * @glyphs_after: (out): Array of glyphs following the substition range
+ * @glyphs_after: (out): Array of glyphs following the substitution range
* @glyphs_output: (out): Array of glyphs that would be the substitued output of the lookup
*
* Fetches a list of all glyphs affected by the specified lookup in the
**/
void
hb_ot_layout_lookup_substitute_closure (hb_face_t *face,
- unsigned int lookup_index,
- hb_set_t *glyphs /* OUT */)
+ unsigned int lookup_index,
+ hb_set_t *glyphs /* OUT */)
{
hb_map_t done_lookups;
OT::hb_closure_context_t c (face, glyphs, &done_lookups);
do
{
glyphs_length = glyphs->get_population ();
- if (lookups != nullptr)
+ if (lookups)
{
for (hb_codepoint_t lookup_index = HB_SET_VALUE_INVALID; hb_set_next (lookups, &lookup_index);)
gsub.get_lookup (lookup_index).closure (&c, lookup_index);
* specifically in their respective size ranges; other ways to differentiate fonts within
* a subfamily are not covered by the `size` feature.
*
- * For more information on this distinction, see the `size` documentation at
- * https://docs.microsoft.com/en-us/typography/opentype/spec/features_pt#tag-39size39
+ * For more information on this distinction, see the [`size` feature documentation](
+ * https://docs.microsoft.com/en-us/typography/opentype/spec/features_pt#tag-size).
*
* Return value: true if data found, false otherwise
*
*
* Fetches a baseline value from the face.
*
- * Return value: if found baseline value in the the font.
+ * Return value: if found baseline value in the font.
*
* Since: 2.6.0
**/
projects / platform / upstream / harfbuzz.git / blobdiff