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usp10: Handle surrogate pairs when shaping.

This commit is contained in:
Aric Stewart 2011-12-16 13:15:47 -06:00 committed by Alexandre Julliard
parent 0404d68999
commit 4fbb6fd66d
1 changed files with 46 additions and 21 deletions
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67
dlls/usp10/usp10.c
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@ -708,7 +708,7 @@ static inline BYTE get_cache_pitch_family(SCRIPT_CACHE *psc)
return ((ScriptCache *)*psc)->tm.tmPitchAndFamily;
}
static inline WORD get_cache_glyph(SCRIPT_CACHE *psc, WCHAR c)
static inline WORD get_cache_glyph(SCRIPT_CACHE *psc, DWORD c)
{
WORD *block = ((ScriptCache *)*psc)->glyphs[c >> GLYPH_BLOCK_SHIFT];
@ -2631,8 +2631,9 @@ HRESULT WINAPI ScriptShapeOpenType( HDC hdc, SCRIPT_CACHE *psc,
SCRIPT_GLYPHPROP *pOutGlyphProps, int *pcGlyphs)
{
HRESULT hr;
unsigned int i;
unsigned int i,g;
BOOL rtl;
int cluster;
TRACE("(%p, %p, %p, %s, %s, %p, %p, %d, %s, %d, %d, %p, %p, %p, %p, %p )\n",
hdc, psc, psa,
@ -2688,35 +2689,59 @@ HRESULT WINAPI ScriptShapeOpenType( HDC hdc, SCRIPT_CACHE *psc,
rChars = heap_alloc(sizeof(WCHAR) * cChars);
if (!rChars) return E_OUTOFMEMORY;
for (i = 0; i < cChars; i++)
for (i = 0, g = 0, cluster = 0; i < cChars; i++)
{
int idx = i;
WCHAR chInput;
DWORD chInput;
if (rtl) idx = cChars - 1 - i;
if (psa->fRTL)
chInput = mirror_char(pwcChars[idx]);
else
chInput = pwcChars[idx];
/* special case for tabs */
if (chInput == 0x0009)
chInput = 0x0020;
if (!(pwOutGlyphs[i] = get_cache_glyph(psc, chInput)))
if (!cluster)
{
WORD glyph;
if (!hdc)
chInput = decode_surrogate_pair(pwcChars, idx, cChars);
if (!chInput)
{
heap_free(rChars);
return E_PENDING;
if (psa->fRTL)
chInput = mirror_char(pwcChars[idx]);
else
chInput = pwcChars[idx];
/* special case for tabs */
if (chInput == 0x0009)
chInput = 0x0020;
rChars[i] = chInput;
}
if (GetGlyphIndicesW(hdc, &chInput, 1, &glyph, 0) == GDI_ERROR)
else
{
heap_free(rChars);
return S_FALSE;
rChars[i] = pwcChars[idx];
rChars[i+1] = pwcChars[(rtl)?idx-1:idx+1];
cluster = 1;
}
pwOutGlyphs[i] = set_cache_glyph(psc, chInput, glyph);
if (!(pwOutGlyphs[g] = get_cache_glyph(psc, chInput)))
{
WORD glyph;
if (!hdc)
{
heap_free(rChars);
return E_PENDING;
}
if (CMAP_GetGlyphIndex(hdc, (ScriptCache *)*psc, chInput, &glyph, 0) == GDI_ERROR)
{
heap_free(rChars);
return S_FALSE;
}
pwOutGlyphs[g] = set_cache_glyph(psc, chInput, glyph);
}
g++;
}
else
{
int k;
cluster--;
pwLogClust[idx] = (rtl)?pwLogClust[idx+1]:pwLogClust[idx-1];
for (k = (rtl)?idx-1:idx+1; k >= 0 && k < cChars; (rtl)?k--:k++)
pwLogClust[k]--;
}
rChars[i] = chInput;
}
*pcGlyphs = g;
SHAPE_ContextualShaping(hdc, (ScriptCache *)*psc, psa, rChars, cChars, pwOutGlyphs, pcGlyphs, cMaxGlyphs, pwLogClust);
SHAPE_ApplyDefaultOpentypeFeatures(hdc, (ScriptCache *)*psc, psa, pwOutGlyphs, pcGlyphs, cMaxGlyphs, cChars, pwLogClust);