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Really fix override-direction in Uniscribe

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This commit is contained in:
Behdad Esfahbod 2012-06-08 10:10:29 -04:00
parent fcd6f53261
commit b069c3c31b
1 changed files with 7 additions and 3 deletions
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10
src/hb-uniscribe.cc
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@ -339,14 +339,18 @@ retry:
unsigned int glyphs_offset = 0; unsigned int glyphs_offset = 0;
unsigned int glyphs_len; unsigned int glyphs_len;
for (unsigned int i = 0; i < item_count; i++) bool backward = HB_DIRECTION_IS_BACKWARD (buffer->props.direction);
for (unsigned int j = 0; j < item_count; j++)
{ {
unsigned int i = backward ? item_count - 1 - j : j;
unsigned int chars_offset = items[i].iCharPos; unsigned int chars_offset = items[i].iCharPos;
unsigned int item_chars_len = items[i + 1].iCharPos - chars_offset; unsigned int item_chars_len = items[i + 1].iCharPos - chars_offset;
OPENTYPE_TAG script_tag; OPENTYPE_TAG script_tag;
/* We ignore what script tag Uniscribe chose, except to differentiate /* We ignore what script tag Uniscribe chose, except to differentiate
* between old/new tags. Not sure if this picks DFLT up correctly... */ * between old/new tags. Not sure if this picks DFLT up correctly...
* This also screws things up as the item.analysis also has an opaque
* script member. */
if (script_tags[i] == hb_uint32_swap (buffer_script_tags[1])) if (script_tags[i] == hb_uint32_swap (buffer_script_tags[1]))
script_tag = hb_uint32_swap (buffer_script_tags[1]); script_tag = hb_uint32_swap (buffer_script_tags[1]);
else else
@ -423,7 +427,7 @@ retry:
uint32_t *p = &vis_clusters[log_clusters[buffer->info[i].utf16_index()]]; uint32_t *p = &vis_clusters[log_clusters[buffer->info[i].utf16_index()]];
*p = MIN (*p, buffer->info[i].cluster); *p = MIN (*p, buffer->info[i].cluster);
} }
if (HB_DIRECTION_IS_FORWARD (buffer->props.direction)) { if (!backward) {
for (unsigned int i = 1; i < glyphs_len; i++) for (unsigned int i = 1; i < glyphs_len; i++)
if (!glyph_props[i].sva.fClusterStart) if (!glyph_props[i].sva.fClusterStart)
vis_clusters[i] = vis_clusters[i - 1]; vis_clusters[i] = vis_clusters[i - 1];