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dwrite: Add separate structure for top level gsub/gpos offsets. 

Signed-off-by: Nikolay Sivov <nsivov@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Nikolay Sivov 2020-05-04 11:29:30 +03:00 committed by Alexandre Julliard
parent 9763f5189f
commit b8f1aed6d9
2 changed files with 23 additions and 20 deletions
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16
dlls/dwrite/dwrite_private.h
View File

@ -434,19 +434,21 @@ enum SCRIPT_JUSTIFY
SCRIPT_JUSTIFY_ARABIC_SEEN_M
};
struct ot_gsubgpos_table
{
struct dwrite_fonttable table;
unsigned int script_list;
unsigned int feature_list;
unsigned int lookup_list;
};
struct scriptshaping_cache
{
const struct shaping_font_ops *font;
void *context;
UINT16 upem;
struct
{
struct dwrite_fonttable table;
unsigned int script_list;
unsigned int feature_list;
unsigned int lookup_list;
} gpos;
struct ot_gsubgpos_table gpos;
struct
{

27
dlls/dwrite/opentype.c
View File

@ -2962,10 +2962,11 @@ void opentype_layout_scriptshaping_cache_init(struct scriptshaping_cache *cache)
cache->gdef.classdef = table_read_be_word(&cache->gdef.table, FIELD_OFFSET(struct gdef_header, classdef));
}
DWORD opentype_layout_find_script(const struct scriptshaping_cache *cache, DWORD kind, DWORD script,
unsigned int opentype_layout_find_script(const struct scriptshaping_cache *cache, unsigned int kind, DWORD script,
unsigned int *script_index)
{
WORD script_count;
const struct ot_gsubgpos_table *table = &cache->gpos;
UINT16 script_count;
unsigned int i;
*script_index = ~0u;
@ -2973,14 +2974,14 @@ DWORD opentype_layout_find_script(const struct scriptshaping_cache *cache, DWORD
if (kind != MS_GPOS_TAG)
return 0;
script_count = table_read_be_word(&cache->gpos.table, cache->gpos.script_list);
script_count = table_read_be_word(&table->table, table->script_list);
if (!script_count)
return 0;
for (i = 0; i < script_count; i++)
{
DWORD tag = table_read_dword(&cache->gpos.table, cache->gpos.script_list +
FIELD_OFFSET(struct ot_script_list, scripts) + i * sizeof(struct ot_script_record));
unsigned int tag = table_read_dword(&table->table, table->script_list + FIELD_OFFSET(struct ot_script_list, scripts) +
i * sizeof(struct ot_script_record));
if (!tag)
continue;
@ -2994,10 +2995,11 @@ DWORD opentype_layout_find_script(const struct scriptshaping_cache *cache, DWORD
return 0;
}
DWORD opentype_layout_find_language(const struct scriptshaping_cache *cache, DWORD kind, DWORD language,
unsigned int opentype_layout_find_language(const struct scriptshaping_cache *cache, unsigned int kind, DWORD language,
unsigned int script_index, unsigned int *language_index)
{
WORD table_offset, lang_count;
const struct ot_gsubgpos_table *table = &cache->gpos;
UINT16 table_offset, lang_count;
unsigned int i;
*language_index = ~0u;
@ -3005,17 +3007,16 @@ DWORD opentype_layout_find_language(const struct scriptshaping_cache *cache, DWO
if (kind != MS_GPOS_TAG)
return 0;
table_offset = table_read_be_word(&cache->gpos.table, cache->gpos.script_list +
FIELD_OFFSET(struct ot_script_list, scripts) + script_index * sizeof(struct ot_script_record) +
FIELD_OFFSET(struct ot_script_record, script));
table_offset = table_read_be_word(&table->table, table->script_list + FIELD_OFFSET(struct ot_script_list, scripts) +
script_index * sizeof(struct ot_script_record) + FIELD_OFFSET(struct ot_script_record, script));
if (!table_offset)
return 0;
lang_count = table_read_be_word(&cache->gpos.table, cache->gpos.script_list + table_offset +
lang_count = table_read_be_word(&table->table, table->script_list + table_offset +
FIELD_OFFSET(struct ot_script, langsys_count));
for (i = 0; i < lang_count; i++)
{
DWORD tag = table_read_dword(&cache->gpos.table, cache->gpos.script_list + table_offset +
unsigned int tag = table_read_dword(&table->table, table->script_list + table_offset +
FIELD_OFFSET(struct ot_script, langsys) + i * sizeof(struct ot_langsys_record));
if (tag == language)
@ -3026,7 +3027,7 @@ DWORD opentype_layout_find_language(const struct scriptshaping_cache *cache, DWO
}
/* Try 'defaultLangSys' if it's set. */
if (table_read_be_word(&cache->gpos.table, cache->gpos.script_list + table_offset))
if (table_read_be_word(&table->table, table->script_list + table_offset))
return ~0u;
return 0;