AuroraMiddleware/harfbuzz
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[Uniscribe] Fix script fallback

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Gurmukhi failures half now.  Others changed slightly.
This commit is contained in:
Behdad Esfahbod 2012-07-20 17:05:46 -04:00
parent 5791f32915
commit e9c0f152a3
1 changed files with 14 additions and 20 deletions
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32
src/hb-uniscribe.cc
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@ -331,10 +331,6 @@ retry:
}
OPENTYPE_TAG language_tag = hb_uint32_swap (hb_ot_tag_from_language (buffer->props.language));
hb_tag_t buffer_script_tags[2];
hb_ot_tags_from_script (buffer->props.script,
&buffer_script_tags[0],
&buffer_script_tags[1]);
unsigned int glyphs_offset = 0;
unsigned int glyphs_len;
@ -345,20 +341,11 @@ retry:
unsigned int chars_offset = items[i].iCharPos;
unsigned int item_chars_len = items[i + 1].iCharPos - chars_offset;
OPENTYPE_TAG script_tag;
/* We ignore what script tag Uniscribe chose, except to differentiate
* 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]))
script_tag = hb_uint32_swap (buffer_script_tags[1]);
else
script_tag = hb_uint32_swap (buffer_script_tags[0]);
retry_shape:
hr = ScriptShapeOpenType (font_data->hdc,
&font_data->script_cache,
&items[i].a,
script_tag,
script_tags[i],
language_tag,
range_char_counts,
range_properties,
@ -373,9 +360,6 @@ retry:
glyph_props + glyphs_offset,
(int *) &glyphs_len);
for (unsigned int j = chars_offset; j < chars_offset + item_chars_len; j++)
log_clusters[j] += glyphs_offset;
if (unlikely (items[i].a.fNoGlyphIndex))
FAIL ("ScriptShapeOpenType() set fNoGlyphIndex");
if (unlikely (hr == E_OUTOFMEMORY))
@ -386,14 +370,24 @@ retry:
goto retry;
}
if (unlikely (hr == USP_E_SCRIPT_NOT_IN_FONT))
{
if (items[i].a.eScript == SCRIPT_UNDEFINED)
FAIL ("ScriptShapeOpenType() failed: Font doesn't support script");
items[i].a.eScript = SCRIPT_UNDEFINED;
goto retry_shape;
}
if (unlikely (FAILED (hr)))
{
FAIL ("ScriptShapeOpenType() failed: 0x%08xL", hr);
}
for (unsigned int j = chars_offset; j < chars_offset + item_chars_len; j++)
log_clusters[j] += glyphs_offset;
hr = ScriptPlaceOpenType (font_data->hdc,
&font_data->script_cache,
&items[i].a,
script_tag,
script_tags[i],
language_tag,
range_char_counts,
range_properties,