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Merge branch 'pdf-font-names' into 'master'

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pdf font subset: Generate valid font names

Closes #449

See merge request cairo/cairo!125
This commit is contained in:
Heiko Lewin 2021-02-21 15:49:06 +00:00
commit f4e43b6822
1 changed files with 2 additions and 6 deletions
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8
src/cairo-pdf-surface.c
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@ -5310,18 +5310,14 @@ _create_font_subset_tag (cairo_scaled_font_subset_t *font_subset,
{
uint32_t hash;
int i;
long numerator;
ldiv_t d;
hash = _hash_data ((unsigned char *) font_name, strlen(font_name), 0);
hash = _hash_data ((unsigned char *) (font_subset->glyphs),
font_subset->num_glyphs * sizeof(unsigned long), hash);
numerator = hash;
for (i = 0; i < 6; i++) {
d = ldiv (numerator, 26);
numerator = d.quot;
tag[i] = 'A' + d.rem;
tag[i] = 'A' + (hash % 26);
hash /= 26;
}
tag[i] = 0;
}