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dwrite: Unify context lookup helpers. 

Signed-off-by: Nikolay Sivov <nsivov@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Nikolay Sivov 2020-06-08 16:29:46 +03:00 committed by Alexandre Julliard
parent b4b33e13d2
commit 102272a4a9
2 changed files with 37 additions and 15 deletions
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7
dlls/dwrite/dwrite_private.h
View File

@ -489,6 +489,10 @@ struct shaping_glyph_properties
UINT16 reserved2 : 4;
};
struct scriptshaping_context;
typedef void (*p_apply_context_lookup)(struct scriptshaping_context *context, unsigned int lookup_index);
struct scriptshaping_context
{
struct scriptshaping_cache *cache;
@ -506,12 +510,14 @@ struct scriptshaping_context
const UINT16 *glyphs;
const DWRITE_SHAPING_GLYPH_PROPERTIES *glyph_props;
const UINT16 *clustermap;
p_apply_context_lookup apply_context_lookup;
} pos;
struct
{
UINT16 *glyphs;
DWRITE_SHAPING_GLYPH_PROPERTIES *glyph_props;
UINT16 *clustermap;
p_apply_context_lookup apply_context_lookup;
unsigned int max_glyph_count;
unsigned int capacity;
const WCHAR *digits;
@ -521,6 +527,7 @@ struct scriptshaping_context
UINT16 *glyphs;
struct shaping_glyph_properties *glyph_props;
UINT16 *clustermap;
p_apply_context_lookup apply_context_lookup;
} buffer;
} u;

45
dlls/dwrite/opentype.c
View File

@ -4608,6 +4608,14 @@ static void opentype_layout_set_glyph_masks(struct scriptshaping_context *contex
}
}
static void opentype_layout_apply_gpos_context_lookup(struct scriptshaping_context *context, unsigned int lookup_index)
{
struct lookup lookup = { 0 };
/* Feature mask is intentionally zero, it's not used outside of main loop. */
if (opentype_layout_init_lookup(context->table, lookup_index, 0, &lookup))
opentype_layout_apply_gpos_lookup(context, &lookup);
}
void opentype_layout_apply_gpos_features(struct scriptshaping_context *context, unsigned int script_index,
unsigned int language_index, const struct shaping_features *features)
{
@ -4615,6 +4623,7 @@ void opentype_layout_apply_gpos_features(struct scriptshaping_context *context,
unsigned int i;
BOOL ret;
context->u.buffer.apply_context_lookup = opentype_layout_apply_gpos_context_lookup;
opentype_layout_collect_lookups(context, script_index, language_index, features, &context->cache->gpos, &lookups);
for (i = 0; i < context->glyph_count; ++i)
@ -5073,12 +5082,9 @@ static BOOL opentype_layout_context_match_lookahead(const struct match_context *
return TRUE;
}
static BOOL opentype_layout_apply_gsub_lookup(struct scriptshaping_context *context, const struct lookup *lookup);
static BOOL opentype_layout_context_gsub_apply_lookup(struct scriptshaping_context *context, unsigned int count,
static BOOL opentype_layout_context_apply_lookup(struct scriptshaping_context *context, unsigned int count,
unsigned int *match_positions, unsigned int lookup_count, const UINT16 *lookup_records, unsigned int match_length)
{
struct lookup lookup = { 0 };
unsigned int i, j;
int end, delta;
@ -5097,8 +5103,8 @@ static BOOL opentype_layout_context_gsub_apply_lookup(struct scriptshaping_conte
orig_len = context->glyph_count;
lookup_index = GET_BE_WORD(lookup_records[i+1]);
if (opentype_layout_init_lookup(context->table, lookup_index, 0, &lookup))
opentype_layout_apply_gsub_lookup(context, &lookup);
context->u.buffer.apply_context_lookup(context, lookup_index);
delta = context->glyph_count - orig_len;
if (!delta)
@ -5141,7 +5147,7 @@ static BOOL opentype_layout_context_gsub_apply_lookup(struct scriptshaping_conte
return TRUE;
}
static BOOL opentype_layout_apply_gsub_chain_context_lookup(unsigned int backtrack_count, const UINT16 *backtrack,
static BOOL opentype_layout_apply_chain_context_match(unsigned int backtrack_count, const UINT16 *backtrack,
unsigned int input_count, const UINT16 *input, unsigned int lookahead_count, const UINT16 *lookahead,
unsigned int lookup_count, const UINT16 *lookup_records, const struct match_context *mc)
{
@ -5151,7 +5157,7 @@ static BOOL opentype_layout_apply_gsub_chain_context_lookup(unsigned int backtra
return opentype_layout_context_match_input(mc, input_count, input, &match_length, match_positions) &&
opentype_layout_context_match_backtrack(mc, backtrack_count, backtrack, &start_index) &&
opentype_layout_context_match_lookahead(mc, lookahead_count, lookahead, input_count, &end_index) &&
opentype_layout_context_gsub_apply_lookup(mc->context, input_count, match_positions, lookup_count, lookup_records, match_length);
opentype_layout_context_apply_lookup(mc->context, input_count, match_positions, lookup_count, lookup_records, match_length);
}
static BOOL opentype_layout_apply_chain_rule_set(const struct match_context *mc, unsigned int offset)
@ -5191,7 +5197,7 @@ static BOOL opentype_layout_apply_chain_rule_set(const struct match_context *mc,
lookup_records = table_read_ensure(table, rule_offset, lookup_count * 2 * sizeof(*lookup_records));
/* First applicable rule is used. */
if (opentype_layout_apply_gsub_chain_context_lookup(backtrack_count, backtrack, input_count, input, lookahead_count,
if (opentype_layout_apply_chain_context_match(backtrack_count, backtrack, input_count, input, lookahead_count,
lookahead, lookup_count, lookup_records, mc))
{
return TRUE;
@ -5201,14 +5207,14 @@ static BOOL opentype_layout_apply_chain_rule_set(const struct match_context *mc,
return FALSE;
}
static BOOL opentype_layout_apply_gsub_context_lookup(unsigned int input_count, const UINT16 *input, unsigned int lookup_count,
static BOOL opentype_layout_apply_context_match(unsigned int input_count, const UINT16 *input, unsigned int lookup_count,
const UINT16 *lookup_records, const struct match_context *mc)
{
unsigned int match_positions[GLYPH_CONTEXT_MAX_LENGTH];
unsigned int match_length = 0;
return opentype_layout_context_match_input(mc, input_count, input, &match_length, match_positions) &&
opentype_layout_context_gsub_apply_lookup(mc->context, input_count, match_positions, lookup_count,
opentype_layout_context_apply_lookup(mc->context, input_count, match_positions, lookup_count,
lookup_records, match_length);
}
@ -5243,7 +5249,7 @@ static BOOL opentype_layout_apply_rule_set(const struct match_context *mc, unsig
continue;
/* First applicable rule is used. */
if (opentype_layout_apply_gsub_context_lookup(input_count, input, lookup_count, lookup_records, mc))
if (opentype_layout_apply_context_match(input_count, input, lookup_count, lookup_records, mc))
return TRUE;
}
@ -5344,7 +5350,7 @@ static BOOL opentype_layout_apply_gsub_context_substitution(struct scriptshaping
mc.input_offset = subtable_offset;
mc.match_func = opentype_match_coverage_func;
ret = opentype_layout_apply_gsub_context_lookup(input_count, input + 1, lookup_count, lookup_records, &mc);
ret = opentype_layout_apply_context_match(input_count, input + 1, lookup_count, lookup_records, &mc);
}
else
WARN("Unknown contextual substitution format %u.\n", format);
@ -5461,8 +5467,8 @@ static BOOL opentype_layout_apply_gsub_chain_context_substitution(struct scripts
mc.lookahead_offset = subtable_offset;
mc.match_func = opentype_match_coverage_func;
ret = opentype_layout_apply_gsub_chain_context_lookup(backtrack_count, backtrack, input_count, input + 1,
lookahead_count, lookahead, lookup_count, lookup_records, &mc);
ret = opentype_layout_apply_chain_context_match(backtrack_count, backtrack, input_count, input + 1, lookahead_count,
lookahead, lookup_count, lookup_records, &mc);
}
else
WARN("Unknown chaining contextual substitution format %u.\n", format);
@ -5679,6 +5685,14 @@ static BOOL opentype_is_gsub_lookup_reversed(const struct scriptshaping_context
return lookup_type == GSUB_LOOKUP_REVERSE_CHAINING_CONTEXTUAL_SUBST;
}
static void opentype_layout_apply_gsub_context_lookup(struct scriptshaping_context *context, unsigned int lookup_index)
{
struct lookup lookup = { 0 };
/* Feature mask is intentionally zero, it's not used outside of main loop. */
if (opentype_layout_init_lookup(context->table, lookup_index, 0, &lookup))
opentype_layout_apply_gsub_lookup(context, &lookup);
}
void opentype_layout_apply_gsub_features(struct scriptshaping_context *context, unsigned int script_index,
unsigned int language_index, const struct shaping_features *features)
{
@ -5686,6 +5700,7 @@ void opentype_layout_apply_gsub_features(struct scriptshaping_context *context,
unsigned int i;
BOOL ret;
context->u.buffer.apply_context_lookup = opentype_layout_apply_gsub_context_lookup;
opentype_layout_collect_lookups(context, script_index, language_index, features, context->table, &lookups);
opentype_get_nominal_glyphs(context, features);