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usp10: Do matra second reorderings for Tamil and Malayalam to prevent blocking consonant ligatures.

This commit is contained in:
Aric Stewart 2011-06-16 11:28:53 -05:00 committed by Alexandre Julliard
parent 4a6364d3c0
commit 9a849038ec
1 changed files with 38 additions and 14 deletions
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52
dlls/usp10/shape.c
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@ -1884,6 +1884,29 @@ static void SecondReorder_Blwf_follows_matra(LPWSTR pwChar, IndicSyllable *s, WO
}
}
static void SecondReorder_Matra_precede_base(LPWSTR pwChar, IndicSyllable *s, WORD *glyphs, IndicSyllable *g, lexical_function lexical)
{
int i;
/* reorder previously moved Matras to correct position*/
for (i = s->start; i < s->base; i++)
{
if (lexical(pwChar[i]) == lex_Matra_pre)
{
int j;
int g_start = g->start + i - s->start;
if (g_start < g->base -1 )
{
WCHAR og = glyphs[g_start];
TRACE("Doing reorder of matra from %i to %i\n",g_start,g->base);
for (j = g_start; j < g->base-1; j++)
glyphs[j] = glyphs[j+1];
glyphs[g->base-1] = og;
}
}
}
}
static void Reorder_Like_Sinhala(LPWSTR pwChar, IndicSyllable *s, lexical_function lexical)
{
TRACE("Syllable (%i..%i..%i)\n",s->start,s->base,s->end);
@ -1924,16 +1947,6 @@ static void Reorder_Like_Kannada(LPWSTR pwChar, IndicSyllable *s, lexical_functi
Reorder_Matra_precede_syllable(pwChar, s, lexical);
}
static void Reorder_Like_Malayalam(LPWSTR pwChar, IndicSyllable *s, lexical_function lexical)
{
TRACE("Syllable (%i..%i..%i)\n",s->start,s->base,s->end);
if (s->start == s->base && s->base == s->end) return;
if (lexical(pwChar[s->base]) == lex_Vowel) return;
Reorder_Ra_follows_matra(pwChar, s, lexical);
Reorder_Matra_precede_base(pwChar, s, lexical);
}
static void SecondReorder_Like_Telugu(LPWSTR pwChar, IndicSyllable *s, WORD* pwGlyphs, IndicSyllable *g, lexical_function lexical)
{
TRACE("Syllable (%i..%i..%i)\n",s->start,s->base,s->end);
@ -1944,6 +1957,17 @@ static void SecondReorder_Like_Telugu(LPWSTR pwChar, IndicSyllable *s, WORD* pwG
SecondReorder_Blwf_follows_matra(pwChar, s, pwGlyphs, g, lexical);
}
static void SecondReorder_Like_Tamil(LPWSTR pwChar, IndicSyllable *s, WORD* pwGlyphs, IndicSyllable *g, lexical_function lexical)
{
TRACE("Syllable (%i..%i..%i)\n",s->start,s->base,s->end);
TRACE("Glyphs (%i..%i..%i)\n",g->start,g->base,g->end);
if (s->start == s->base && s->base == s->end) return;
if (lexical(pwChar[s->base]) == lex_Vowel) return;
SecondReorder_Matra_precede_base(pwChar, s, pwGlyphs, g, lexical);
}
static inline void shift_syllable_glyph_indexs(IndicSyllable *glyph_index, INT index, INT shift)
{
if (shift == 0)
@ -2659,13 +2683,13 @@ static void ContextualShape_Tamil(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *ps
TRACE("New composed string %s (%i)\n",debugstr_wn(input,cCount),cCount);
/* Step 2: Reorder within Syllables */
Indic_ReorderCharacters( hdc, psa, psc, input, cCount, &syllables, &syllable_count, tamil_lex, Reorder_Like_Sinhala);
Indic_ReorderCharacters( hdc, psa, psc, input, cCount, &syllables, &syllable_count, tamil_lex, Reorder_Like_Bengali);
TRACE("reordered string %s\n",debugstr_wn(input,cCount));
GetGlyphIndicesW(hdc, input, cCount, pwOutGlyphs, 0);
*pcGlyphs = cCount;
/* Step 3: Base Form application to syllables */
ShapeIndicSyllables(hdc, psc, psa, input, cCount, syllables, syllable_count, pwOutGlyphs, pcGlyphs, pwLogClust, tamil_lex, NULL);
ShapeIndicSyllables(hdc, psc, psa, input, cCount, syllables, syllable_count, pwOutGlyphs, pcGlyphs, pwLogClust, tamil_lex, SecondReorder_Like_Tamil);
HeapFree(GetProcessHeap(),0,input);
HeapFree(GetProcessHeap(),0,syllables);
@ -2848,13 +2872,13 @@ static void ContextualShape_Malayalam(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS
TRACE("New composed string %s (%i)\n",debugstr_wn(input,cCount),cCount);
/* Step 2: Reorder within Syllables */
Indic_ReorderCharacters( hdc, psa, psc, input, cCount, &syllables, &syllable_count, malayalam_lex, Reorder_Like_Malayalam);
Indic_ReorderCharacters( hdc, psa, psc, input, cCount, &syllables, &syllable_count, malayalam_lex, Reorder_Like_Devanagari);
TRACE("reordered string %s\n",debugstr_wn(input,cCount));
GetGlyphIndicesW(hdc, input, cCount, pwOutGlyphs, 0);
*pcGlyphs = cCount;
/* Step 3: Base Form application to syllables */
ShapeIndicSyllables(hdc, psc, psa, input, cCount, syllables, syllable_count, pwOutGlyphs, pcGlyphs, pwLogClust, malayalam_lex, NULL);
ShapeIndicSyllables(hdc, psc, psa, input, cCount, syllables, syllable_count, pwOutGlyphs, pcGlyphs, pwLogClust, malayalam_lex, SecondReorder_Like_Tamil);
HeapFree(GetProcessHeap(),0,input);
HeapFree(GetProcessHeap(),0,syllables);