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[hangul] Fix decomposition logic 

Seems to be working now.
This commit is contained in:
Behdad Esfahbod 2014-01-02 14:20:00 +08:00
parent bdb20dafc3
commit 29ea403d67
1 changed files with 8 additions and 11 deletions
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19
src/hb-ot-shape-complex-hangul.cc
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@ -168,16 +168,13 @@ preprocess_text_hangul (const hb_ot_shape_plan_t *plan,
unsigned int vindex = nindex / TCount;
unsigned int tindex = nindex % TCount;
if (tindex && has_glyph)
goto next; /* <LVT> supported. Nothing to do. */
if (!tindex &&
buffer->idx + 1 < count &&
isCombiningT (buffer->cur(+1).codepoint))
{
/* <LV,T>, try to combine. */
tindex = buffer->cur(+1).codepoint - TBase;
hb_codepoint_t new_s = s + tindex;
unsigned int new_tindex = buffer->cur(+1).codepoint - TBase;
hb_codepoint_t new_s = s + new_tindex;
if (font->get_glyph (new_s, 0, &glyph))
{
buffer->replace_glyphs (2, 1, &new_s);
@ -187,11 +184,12 @@ preprocess_text_hangul (const hb_ot_shape_plan_t *plan,
}
}
/* Otherwise, decompose if font doesn't support <LV>,
* or if having non-combining <LV,T>. Note that we
* already handled combining <LV,T> above. */
/* Otherwise, decompose if font doesn't support <LV> or <LVT>,
* or if having non-combining <LV,T>. Note that we already handled
* combining <LV,T> above. */
if (!has_glyph ||
(buffer->idx + 1 < count &&
(!tindex &&
buffer->idx + 1 < count &&
isT (buffer->cur(+1).codepoint)))
{
hb_codepoint_t decomposed[3] = {LBase + lindex,
@ -199,7 +197,7 @@ preprocess_text_hangul (const hb_ot_shape_plan_t *plan,
TBase + tindex};
if (font->get_glyph (decomposed[0], 0, &glyph) &&
font->get_glyph (decomposed[1], 0, &glyph) &&
(tindex && font->get_glyph (decomposed[2], 0, &glyph)))
(!tindex || font->get_glyph (decomposed[2], 0, &glyph)))
{
buffer->replace_glyphs (1, tindex ? 3 : 2, decomposed);
if (unlikely (buffer->in_error))
@ -209,7 +207,6 @@ preprocess_text_hangul (const hb_ot_shape_plan_t *plan,
}
}
next:
buffer->next_glyph ();
}
buffer->swap_buffers ();