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usp10: Break out a function to apply a GSUB feature to an entire string of glyphs.

This commit is contained in:
Aric Stewart 2010-05-27 15:03:21 -05:00 committed by Alexandre Julliard
parent fd5e732a39
commit 5ad2f6e152
1 changed files with 52 additions and 16 deletions
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68
dlls/usp10/shape.c
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@ -549,6 +549,57 @@ static VOID *load_gsub_table(HDC hdc)
return GSUB_Table;
}
static int apply_GSUB_feature(HDC hdc, SCRIPT_ANALYSIS *psa, void* GSUB_Table, WORD *pwOutGlyphs, int write_dir, INT* pcGlyphs, const char* feat)
{
int i;
if (GSUB_Table)
{
const GSUB_Header *header;
const GSUB_Script *script;
const GSUB_LangSys *language;
const GSUB_Feature *feature;
if (!GSUB_Table)
return GSUB_E_NOFEATURE;
header = GSUB_Table;
script = GSUB_get_script_table(header, get_opentype_script(hdc,psa));
if (!script)
{
TRACE("Script not found\n");
return GSUB_E_NOFEATURE;
}
language = GSUB_get_lang_table(script, "xxxx");
if (!language)
{
TRACE("Language not found\n");
return GSUB_E_NOFEATURE;
}
feature = GSUB_get_feature(header, language, feat);
if (!feature)
{
TRACE("%s feature not found\n",feat);
return GSUB_E_NOFEATURE;
}
i = 0;
TRACE("applying feature %s\n",feat);
while(i < *pcGlyphs)
{
INT nextIndex;
nextIndex = GSUB_apply_feature(header, feature, pwOutGlyphs, i, write_dir, pcGlyphs);
if (nextIndex > GSUB_E_NOGLYPH)
i = nextIndex;
else
i++;
}
return *pcGlyphs;
}
return GSUB_E_NOFEATURE;
}
static CHAR neighbour_joining_type(int i, int delta, const CHAR* context_type, INT cchLen, SCRIPT_ANALYSIS *psa)
{
if (i + delta < 0)
@ -668,22 +719,7 @@ void SHAPE_ShapeArabicGlyphs(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WC
}
}
/* Required ligature substitution */
if (psc->GSUB_Table)
{
i = 0;
while(i < *pcGlyphs)
{
INT nextIndex;
nextIndex = apply_GSUB_feature_to_glyph(hdc, psa, psc->GSUB_Table, pwOutGlyphs, i, dirL, pcGlyphs, "rlig");
if (nextIndex > GSUB_E_NOGLYPH)
i = nextIndex;
else if (nextIndex == GSUB_E_NOFEATURE)
break;
else
i++;
}
}
apply_GSUB_feature(hdc, psa, psc->GSUB_Table, pwOutGlyphs, dirL, pcGlyphs, "rlig");
HeapFree(GetProcessHeap(),0,context_shape);
HeapFree(GetProcessHeap(),0,context_type);