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[kerx] Allow granularly disabling kerning

This commit is contained in:
Behdad Esfahbod 2018-10-10 22:15:13 -04:00
parent 2b72c4b63d
commit f7c45bc33e
1 changed files with 9 additions and 5 deletions
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14
src/hb-aat-layout-kerx-table.hh
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@ -162,6 +162,7 @@ struct KerxSubTableFormat1
return false; return false;
} }
hb_mask_t kern_mask = c->plan->kern_mask;
for (unsigned int i = 0; i < depth; i++) for (unsigned int i = 0; i < depth; i++)
{ {
/* Apparently, when spec says "Each pops one glyph from the kerning stack /* Apparently, when spec says "Each pops one glyph from the kerning stack
@ -170,11 +171,14 @@ struct KerxSubTableFormat1
* list. Discovered by testing. */ * list. Discovered by testing. */
unsigned int idx = stack[i]; unsigned int idx = stack[i];
int v = *actions++; int v = *actions++;
/* XXX Non-forward direction... */ if (buffer->info[idx].mask & kern_mask)
if (HB_DIRECTION_IS_HORIZONTAL (buffer->props.direction)) {
buffer->pos[idx].x_advance += c->font->em_scale_x (v); /* XXX Non-forward direction... */
else if (HB_DIRECTION_IS_HORIZONTAL (buffer->props.direction))
buffer->pos[idx].y_advance += c->font->em_scale_y (v); buffer->pos[idx].x_advance += c->font->em_scale_x (v);
else
buffer->pos[idx].y_advance += c->font->em_scale_y (v);
}
} }
depth = 0; depth = 0;
} }