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Removed unused cairo_truetype_create_glyph_to_unicode_map()

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Adrian Johnson 2008-06-29 19:36:10 +09:30
parent 154324f121
commit 2012d4f736
1 changed files with 0 additions and 147 deletions
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147
src/cairo-truetype-subset.c
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@ -1172,153 +1172,6 @@ _cairo_truetype_subset_fini (cairo_truetype_subset_t *subset)
free (subset->string_offsets);
}
static cairo_int_status_t
_cairo_truetype_map_glyphs_to_unicode (cairo_scaled_font_subset_t *font_subset,
unsigned long table_offset)
{
cairo_status_t status;
const cairo_scaled_font_backend_t *backend;
tt_segment_map_t *map;
char buf[4];
unsigned int num_segments, i, j;
unsigned long size;
uint16_t *start_code;
uint16_t *end_code;
uint16_t *delta;
uint16_t *range_offset;
uint16_t *glyph_array;
uint16_t g_id, c;
backend = font_subset->scaled_font->backend;
size = 4;
status = backend->load_truetype_table (font_subset->scaled_font,
TT_TAG_cmap, table_offset,
(unsigned char *) &buf,
&size);
if (status)
return status;
/* All table formats have the same first two words */
map = (tt_segment_map_t *) buf;
if (be16_to_cpu (map->format) != 4)
return CAIRO_INT_STATUS_UNSUPPORTED;
size = be16_to_cpu (map->length);
map = malloc (size);
if (map == NULL)
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
status = backend->load_truetype_table (font_subset->scaled_font,
TT_TAG_cmap, table_offset,
(unsigned char *) map,
&size);
if (status)
goto fail;
num_segments = be16_to_cpu (map->segCountX2)/2;
end_code = map->endCount;
start_code = &(end_code[num_segments + 1]);
delta = &(start_code[num_segments]);
range_offset = &(delta[num_segments]);
glyph_array = &(range_offset[num_segments]);
i = 0;
while (i < font_subset->num_glyphs) {
g_id = (uint16_t) font_subset->glyphs[i];
/* search for glyph in segments
* with rangeOffset=0 */
for (j = 0; j < num_segments; j++) {
c = g_id - be16_to_cpu (delta[j]);
if (range_offset[j] == 0 &&
c >= be16_to_cpu (start_code[j]) &&
c <= be16_to_cpu (end_code[j]))
{
font_subset->to_unicode[i] = c;
goto next_glyph;
}
}
/* search for glyph in segments with rangeOffset=1 */
for (j = 0; j < num_segments; j++) {
if (range_offset[j] != 0) {
uint16_t *glyph_ids = &range_offset[j] + be16_to_cpu (range_offset[j])/2;
int range_size = be16_to_cpu (end_code[j]) - be16_to_cpu (start_code[j]) + 1;
uint16_t g_id_be = cpu_to_be16 (g_id);
int k;
for (k = 0; k < range_size; k++) {
if (glyph_ids[k] == g_id_be) {
font_subset->to_unicode[i] = be16_to_cpu (start_code[j]) + k;
goto next_glyph;
}
}
}
}
next_glyph:
i++;
}
status = CAIRO_STATUS_SUCCESS;
fail:
free (map);
return status;
}
cairo_int_status_t
_cairo_truetype_create_glyph_to_unicode_map (cairo_scaled_font_subset_t *font_subset)
{
cairo_status_t status = CAIRO_INT_STATUS_UNSUPPORTED;
const cairo_scaled_font_backend_t *backend;
tt_cmap_t *cmap;
char buf[4];
int num_tables, i;
unsigned long size;
backend = font_subset->scaled_font->backend;
if (!backend->load_truetype_table)
return CAIRO_INT_STATUS_UNSUPPORTED;
size = 4;
status = backend->load_truetype_table (font_subset->scaled_font,
TT_TAG_cmap, 0,
(unsigned char *) &buf,
&size);
if (status)
return status;
cmap = (tt_cmap_t *) buf;
num_tables = be16_to_cpu (cmap->num_tables);
size = 4 + num_tables*sizeof(tt_cmap_index_t);
cmap = malloc (size);
if (cmap == NULL)
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
status = backend->load_truetype_table (font_subset->scaled_font,
TT_TAG_cmap, 0,
(unsigned char *) cmap,
&size);
if (status)
goto cleanup;
/* Find a table with Unicode mapping */
for (i = 0; i < num_tables; i++) {
if (be16_to_cpu (cmap->index[i].platform) == 3 &&
be16_to_cpu (cmap->index[i].encoding) == 1) {
status = _cairo_truetype_map_glyphs_to_unicode (font_subset,
be32_to_cpu (cmap->index[i].offset));
if (status != CAIRO_INT_STATUS_UNSUPPORTED)
goto cleanup;
}
}
cleanup:
free (cmap);
return status;
}
static cairo_int_status_t
_cairo_truetype_reverse_cmap (cairo_scaled_font_t *scaled_font,
unsigned long table_offset,