usp10: Insert dotted circle (U+25CC) for invalid combining sequences in Thaana.

dlls/usp10/shape.c

@@ -44,6 +44,7 @@ typedef VOID (*ContextualShapingProc)(HDC, ScriptCache*, SCRIPT_ANALYSIS*,
 static void ContextualShape_Arabic(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
 static void ContextualShape_Hebrew(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
 static void ContextualShape_Syriac(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
+static void ContextualShape_Thaana(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
 static void ContextualShape_Phags_pa(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
 static void ContextualShape_Sinhala(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
 static void ContextualShape_Devanagari(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust);
@@ -398,7 +399,7 @@ static const ScriptShapeData ShapingData[] =
     {{ hebrew_features, 1}, NULL, 0, ContextualShape_Hebrew, NULL},
     {{ syriac_features, 4}, required_syriac_features, 0, ContextualShape_Syriac, ShapeCharGlyphProp_None},
     {{ arabic_features, 6}, required_arabic_features, 0, ContextualShape_Arabic, ShapeCharGlyphProp_Arabic},
-    {{ NULL, 0}, NULL, 0, NULL, ShapeCharGlyphProp_None},
+    {{ NULL, 0}, NULL, 0, ContextualShape_Thaana, ShapeCharGlyphProp_None},
     {{ standard_features, 2}, NULL, 0, NULL, NULL},
     {{ standard_features, 2}, NULL, 0, NULL, NULL},
     {{ standard_features, 2}, NULL, 0, NULL, NULL},
@@ -1241,6 +1242,44 @@ right_join_causing(neighbour_joining_type(i,dirR,context_type,cChars,psa)))
     mark_invalid_combinations(hdc, pwcChars, cChars, pwOutGlyphs, pcGlyphs, dirL, pwLogClust, combining_lexical_Syriac);
 }
 
+static int combining_lexical_Thaana(WCHAR c)
+{
+    enum {Thaana_Norm=0, Thaana_FILI};
+
+   switch(c)
+    {
+        case 0x7A6:
+        case 0x7A7:
+        case 0x7A8:
+        case 0x7A9:
+        case 0x7AA:
+        case 0x7AB:
+        case 0x7AC:
+        case 0x7AD:
+        case 0x7AE:
+        case 0x7AF: return Thaana_FILI; break;
+        default: return Thaana_Norm;
+    }
+}
+
+static void ContextualShape_Thaana(HDC hdc, ScriptCache *psc, SCRIPT_ANALYSIS *psa, WCHAR* pwcChars, INT cChars, WORD* pwOutGlyphs, INT* pcGlyphs, INT cMaxGlyphs, WORD *pwLogClust)
+{
+    INT dirL;
+
+    if (*pcGlyphs != cChars)
+    {
+        ERR("Number of Glyphs and Chars need to match at the beginning\n");
+        return;
+    }
+
+    if (!psa->fLogicalOrder && psa->fRTL)
+        dirL = -1;
+    else
+        dirL = 1;
+
+    mark_invalid_combinations(hdc, pwcChars, cChars, pwOutGlyphs, pcGlyphs, dirL, pwLogClust, combining_lexical_Thaana);
+}
+
 /*
  * ContextualShape_Phags_pa
  */