Signed-off-by: Nikolay Sivov nsivov@codeweavers.com --- dlls/dwrite/opentype.c | 98 +++++++++++++++++++++++++----------------- 1 file changed, 59 insertions(+), 39 deletions(-)
diff --git a/dlls/dwrite/opentype.c b/dlls/dwrite/opentype.c index 54d066e0173..7e35feb7f51 100644 --- a/dlls/dwrite/opentype.c +++ b/dlls/dwrite/opentype.c @@ -4159,7 +4159,12 @@ static void opentype_layout_apply_gpos_lookup(struct scriptshaping_context *cont struct lookup { unsigned short index; + unsigned short type; + unsigned short flags; + unsigned short subtable_count; + unsigned int mask; + unsigned int offset; };
struct lookups @@ -4176,11 +4181,45 @@ static int lookups_sorting_compare(const void *a, const void *b) return left->index < right->index ? -1 : left->index > right->index ? 1 : 0; };
+static BOOL opentype_layout_init_lookup(struct ot_gsubgpos_table *table, unsigned short lookup_index, unsigned int mask, + struct lookup *lookup) +{ + unsigned short subtable_count, lookup_type, flags; + const struct ot_lookup_table *lookup_table; + unsigned int offset; + + if (!(offset = table_read_be_word(&table->table, table->lookup_list + + FIELD_OFFSET(struct ot_lookup_list, lookup[lookup_index])))) + { + return FALSE; + } + + offset += table->lookup_list; + + if (!(lookup_table = table_read_ensure(&table->table, offset, sizeof(*lookup_table)))) + return FALSE; + + if (!(subtable_count = GET_BE_WORD(lookup_table->subtable_count))) + return FALSE; + + lookup_type = GET_BE_WORD(lookup_table->lookup_type); + flags = GET_BE_WORD(lookup_table->flags); + + lookup->index = lookup_index; + lookup->type = lookup_type; + lookup->flags = flags; + lookup->subtable_count = subtable_count; + lookup->mask = mask; + lookup->offset = offset; + + return TRUE; +} + static void opentype_layout_add_lookups(const struct ot_feature_list *feature_list, UINT16 total_lookup_count, struct ot_gsubgpos_table *table, struct shaping_feature *feature, struct lookups *lookups) { UINT16 feature_offset, lookup_count; - unsigned int i, j; + unsigned int i;
/* Feature wasn't found */ if (feature->index == 0xffff) @@ -4211,10 +4250,8 @@ static void opentype_layout_add_lookups(const struct ot_feature_list *feature_li if (lookup_index >= total_lookup_count) continue;
- j = lookups->count; - lookups->lookups[j].index = lookup_index; - lookups->lookups[j].mask = feature->mask; - lookups->count++; + if (opentype_layout_init_lookup(table, lookup_index, feature->mask, &lookups->lookups[lookups->count])) + lookups->count++; } }
@@ -4424,7 +4461,7 @@ void opentype_layout_apply_gpos_features(struct scriptshaping_context *context, heap_free(lookups.lookups); }
-static BOOL opentype_layout_apply_gsub_single_substitution(struct glyph_iterator *iter, const struct ot_lookup *lookup) +static BOOL opentype_layout_apply_gsub_single_substitution(struct glyph_iterator *iter, const struct lookup *lookup) { UINT16 format, coverage, orig_glyph = iter->context->u.subst.glyphs[iter->pos], glyph = orig_glyph; struct scriptshaping_cache *cache = iter->context->cache; @@ -4550,16 +4587,19 @@ static BOOL opentype_layout_context_match_lookahead(struct glyph_iterator *iter, }
static void opentype_layout_apply_gsub_lookup(struct scriptshaping_context *context, unsigned int first_glyph, - unsigned int glyph_count, int lookup_index, BOOL only_single); + unsigned int glyph_count, struct lookup *lookup, BOOL only_single);
static BOOL opentype_layout_context_gsub_apply_lookup(struct glyph_iterator *iter, unsigned int count, unsigned int lookup_count, const UINT16 *lookup_records) { + struct lookup lookup = { 0 }; + if (lookup_count > 1) FIXME("Only first lookup used.\n");
- opentype_layout_apply_gsub_lookup(iter->context, iter->pos + GET_BE_WORD(lookup_records[0]), count, - GET_BE_WORD(lookup_records[1]), TRUE); + if (opentype_layout_init_lookup(&iter->context->cache->gsub, GET_BE_WORD(lookup_records[1]), 0, &lookup)) + opentype_layout_apply_gsub_lookup(iter->context, iter->pos + GET_BE_WORD(lookup_records[0]), count, + &lookup, TRUE);
return TRUE; } @@ -4574,7 +4614,7 @@ static BOOL opentype_layout_apply_gsub_chain_context_lookup(struct glyph_iterato opentype_layout_context_gsub_apply_lookup(iter, input_count, lookup_count, lookup_records); }
-static BOOL opentype_layout_apply_gsub_chain_context_substitution(struct glyph_iterator *iter, const struct ot_lookup *lookup) +static BOOL opentype_layout_apply_gsub_chain_context_substitution(struct glyph_iterator *iter, const struct lookup *lookup) { struct scriptshaping_cache *cache = iter->context->cache; UINT16 format, coverage; @@ -4661,34 +4701,14 @@ static BOOL opentype_layout_apply_gsub_chain_context_substitution(struct glyph_i }
static void opentype_layout_apply_gsub_lookup(struct scriptshaping_context *context, unsigned int first_glyph, - unsigned int glyph_count, int lookup_index, BOOL only_single) + unsigned int glyph_count, struct lookup *lookup, BOOL only_single) { - struct ot_gsubgpos_table *table = &context->cache->gsub; - const struct ot_lookup_table *lookup_table; struct glyph_iterator iter; - struct ot_lookup lookup; - WORD lookup_type;
- lookup.offset = table_read_be_word(&table->table, table->lookup_list + FIELD_OFFSET(struct ot_lookup_list, lookup[lookup_index])); - if (!lookup.offset) + if (lookup->type != GSUB_LOOKUP_SINGLE_SUBST && only_single) return;
- lookup.offset += table->lookup_list; - - if (!(lookup_table = table_read_ensure(&table->table, lookup.offset, sizeof(*lookup_table)))) - return; - - lookup.subtable_count = GET_BE_WORD(lookup_table->subtable_count); - if (!lookup.subtable_count) - return; - - lookup_type = GET_BE_WORD(lookup_table->lookup_type); - lookup.flags = GET_BE_WORD(lookup_table->flags); - - if (lookup_type != GSUB_LOOKUP_SINGLE_SUBST && only_single) - return; - - glyph_iterator_init(context, lookup.flags, first_glyph, glyph_count, &iter); + glyph_iterator_init(context, lookup->flags, first_glyph, glyph_count, &iter);
while (iter.pos < first_glyph + iter.len) { @@ -4700,13 +4720,13 @@ static void opentype_layout_apply_gsub_lookup(struct scriptshaping_context *cont continue; }
- switch (lookup_type) + switch (lookup->type) { case GSUB_LOOKUP_SINGLE_SUBST: - ret = opentype_layout_apply_gsub_single_substitution(&iter, &lookup); + ret = opentype_layout_apply_gsub_single_substitution(&iter, lookup); break; case GSUB_LOOKUP_CHAINING_CONTEXTUAL_SUBST: - ret = opentype_layout_apply_gsub_chain_context_substitution(&iter, &lookup); + ret = opentype_layout_apply_gsub_chain_context_substitution(&iter, lookup); break; case GSUB_LOOKUP_MULTIPLE_SUBST: case GSUB_LOOKUP_ALTERNATE_SUBST: @@ -4714,10 +4734,10 @@ static void opentype_layout_apply_gsub_lookup(struct scriptshaping_context *cont case GSUB_LOOKUP_CONTEXTUAL_SUBST: case GSUB_LOOKUP_REVERSE_CHAINING_CONTEXTUAL_SUBST: ret = FALSE; - WARN("Unimplemented lookup %d.\n", lookup_type); + WARN("Unimplemented lookup %d.\n", lookup->type); break; default: - WARN("Unknown lookup type %u.\n", lookup_type); + WARN("Unknown lookup type %u.\n", lookup->type); return; }
@@ -4801,7 +4821,7 @@ HRESULT opentype_layout_apply_gsub_features(struct scriptshaping_context *contex opentype_layout_set_glyph_masks(context, features);
for (i = 0; i < lookups.count; ++i) - opentype_layout_apply_gsub_lookup(context, 0, context->glyph_count, lookups.lookups[i].index, FALSE); + opentype_layout_apply_gsub_lookup(context, 0, context->glyph_count, &lookups.lookups[i], FALSE);
heap_free(lookups.lookups);