--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/fontservices/textshaperplugin/IcuSource/layout/ThaiShaping.h	Tue Feb 02 02:02:46 2010 +0200
@@ -0,0 +1,108 @@
+/*
+ *
+ * (C) Copyright IBM Corp. 1998-2005 - All Rights Reserved
+ *
+ */
+
+#ifndef __THAISHAPING_H
+#define __THAISHAPING_H
+
+/**
+ * \file
+ * \internal
+ */
+
+#include "LETypes.h"
+#include "LEGlyphFilter.h"
+#include "OpenTypeTables.h"
+
+U_NAMESPACE_BEGIN
+
+class LEGlyphStorage;
+
+class ThaiShaping /* not : public UObject because all methods are static */ {
+public:
+
+    enum {
+        // Character classes
+        NON =  0,
+        CON =  1,
+        COA =  2,
+        COD =  3,
+        LVO =  4,
+        FV1 =  5,
+        FV2 =  6,
+        FV3 =  7,
+        BV1 =  8,
+        BV2 =  9,
+        BDI = 10,
+        TON = 11,
+        AD1 = 12,
+        AD2 = 13,
+        AD3 = 14,
+        NIK = 15,
+        AV1 = 16,
+        AV2 = 17,
+        AV3 = 18,
+        classCount = 19,
+
+        // State Transition actions
+        tA  =  0,
+        tC  =  1,
+        tD  =  2,
+        tE  =  3,
+        tF  =  4,
+        tG  =  5,
+        tH  =  6,
+        tR  =  7,
+        tS  =  8
+    };
+
+    struct StateTransition
+    {
+        le_uint8 nextState;
+        le_uint8 action;
+
+        le_uint8 getNextState() { return nextState; };
+        le_uint8 getAction() { return action; };
+    };
+
+    static le_int32 compose(const LEUnicode *input, le_int32 offset, le_int32 charCount, le_uint8 glyphSet,
+        LEUnicode errorChar, LEUnicode *output, LEGlyphStorage &glyphStorage);
+
+private:
+    // forbid instantiation
+    ThaiShaping();
+
+    static const le_uint8 classTable[];
+    static const StateTransition thaiStateTable[][classCount];
+
+    inline static StateTransition getTransition(le_uint8 state, le_uint8 currClass);
+
+    static le_uint8 doTransition(StateTransition transition, LEUnicode currChar, le_int32 inputIndex, le_uint8 glyphSet,
+        LEUnicode errorChar, LEUnicode *outputBuffer, LEGlyphStorage &glyphStorage, le_int32 &outputIndex);
+
+    static le_uint8 getNextState(LEUnicode ch, le_uint8 state, le_int32 inputIndex, le_uint8 glyphSet, LEUnicode errorChar,
+        le_uint8 &charClass, LEUnicode *output, LEGlyphStorage &glyphStorage, le_int32 &outputIndex);
+
+    static le_bool isLegalHere(LEUnicode ch, le_uint8 prevState);
+    static le_uint8 getCharClass(LEUnicode ch);
+
+    static LEUnicode noDescenderCOD(LEUnicode cod, le_uint8 glyphSet);
+    static LEUnicode leftAboveVowel(LEUnicode vowel, le_uint8 glyphSet);
+    static LEUnicode lowerBelowVowel(LEUnicode vowel, le_uint8 glyphSet);
+    static LEUnicode lowerRightTone(LEUnicode tone, le_uint8 glyphSet);
+    static LEUnicode lowerLeftTone(LEUnicode tone, le_uint8 glyphSet);
+    static LEUnicode upperLeftTone(LEUnicode tone, le_uint8 glyphSet);
+
+};
+
+inline ThaiShaping::StateTransition ThaiShaping::getTransition(le_uint8 state, le_uint8 currClass)
+{
+    return thaiStateTable[state][currClass];
+}
+
+U_NAMESPACE_END
+#endif
+
+