--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/fontservices/textshaperplugin/IcuSource/layout/PairPositioningSubtables.cpp	Tue Feb 02 02:02:46 2010 +0200
@@ -0,0 +1,150 @@
+/*
+ *
+ * (C) Copyright IBM Corp. 1998-2005 - All Rights Reserved
+ *
+ */
+
+#include "LETypes.h"
+#include "LEFontInstance.h"
+#include "OpenTypeTables.h"
+#include "GlyphPositioningTables.h"
+#include "PairPositioningSubtables.h"
+#include "ValueRecords.h"
+#include "GlyphIterator.h"
+#include "OpenTypeUtilities.h"
+#include "LESwaps.h"
+
+U_NAMESPACE_BEGIN
+
+le_uint32 PairPositioningSubtable::process(GlyphIterator *glyphIterator, const LEFontInstance *fontInstance) const
+{
+    switch(SWAPW(subtableFormat))
+    {
+    case 0:
+        return 0;
+
+    case 1:
+    {
+        const PairPositioningFormat1Subtable *subtable = (const PairPositioningFormat1Subtable *) this;
+
+        return subtable->process(glyphIterator, fontInstance);
+    }
+
+    case 2:
+    {
+        const PairPositioningFormat2Subtable *subtable = (const PairPositioningFormat2Subtable *) this;
+
+        return subtable->process(glyphIterator, fontInstance);
+    }
+
+    default:
+        return 0;
+    }
+}
+
+le_uint32 PairPositioningFormat1Subtable::process(GlyphIterator *glyphIterator, const LEFontInstance *fontInstance) const
+{
+    LEGlyphID firstGlyph = glyphIterator->getCurrGlyphID();
+    le_int32 coverageIndex = getGlyphCoverage(firstGlyph);
+    GlyphIterator tempIterator(*glyphIterator);
+
+    if (coverageIndex >= 0 && glyphIterator->next()) {
+        Offset pairSetTableOffset = SWAPW(pairSetTableOffsetArray[coverageIndex]);
+        PairSetTable *pairSetTable = (PairSetTable *) ((char *) this + pairSetTableOffset);
+        le_uint16 pairValueCount = SWAPW(pairSetTable->pairValueCount);
+        le_int16 valueRecord1Size = ValueRecord::getSize(SWAPW(valueFormat1));
+        le_int16 valueRecord2Size = ValueRecord::getSize(SWAPW(valueFormat2));
+        le_int16 recordSize = sizeof(PairValueRecord) - sizeof(ValueRecord) + valueRecord1Size + valueRecord2Size;
+        LEGlyphID secondGlyph = glyphIterator->getCurrGlyphID();
+        const PairValueRecord *pairValueRecord = NULL;
+
+        if (pairValueCount != 0) {
+            pairValueRecord = findPairValueRecord((TTGlyphID) LE_GET_GLYPH(secondGlyph), pairSetTable->pairValueRecordArray, pairValueCount, recordSize);
+        }
+
+        if (pairValueRecord == NULL) {
+            return 0;
+        }
+
+        if (valueFormat1 != 0) {
+            pairValueRecord->valueRecord1.adjustPosition(SWAPW(valueFormat1), (char *) this, tempIterator, fontInstance);
+        }
+
+        if (valueFormat2 != 0) {
+            const ValueRecord *valueRecord2 = (const ValueRecord *) ((char *) &pairValueRecord->valueRecord1 + valueRecord1Size);
+
+            valueRecord2->adjustPosition(SWAPW(valueFormat2), (char *) this, *glyphIterator, fontInstance);
+        }
+
+        return 2;
+    }
+
+    return 0;
+}
+
+le_uint32 PairPositioningFormat2Subtable::process(GlyphIterator *glyphIterator, const LEFontInstance *fontInstance) const
+{
+    LEGlyphID firstGlyph = glyphIterator->getCurrGlyphID();
+    le_int32 coverageIndex = getGlyphCoverage(firstGlyph);
+    GlyphIterator tempIterator(*glyphIterator);
+
+    if (coverageIndex >= 0 && glyphIterator->next()) {
+        LEGlyphID secondGlyph = glyphIterator->getCurrGlyphID();
+        const ClassDefinitionTable *classDef1 = (const ClassDefinitionTable *) ((char *) this + SWAPW(classDef1Offset));
+        const ClassDefinitionTable *classDef2 = (const ClassDefinitionTable *) ((char *) this + SWAPW(classDef2Offset));
+        le_int32 class1 = classDef1->getGlyphClass(firstGlyph);
+        le_int32 class2 = classDef2->getGlyphClass(secondGlyph);
+        le_int16 valueRecord1Size = ValueRecord::getSize(SWAPW(valueFormat1));
+        le_int16 valueRecord2Size = ValueRecord::getSize(SWAPW(valueFormat2));
+        le_int16 class2RecordSize = valueRecord1Size + valueRecord2Size;
+        le_int16 class1RecordSize = class2RecordSize * SWAPW(class2Count);
+        const Class1Record *class1Record = (const Class1Record *) ((char *) class1RecordArray + (class1RecordSize * class1));
+        const Class2Record *class2Record = (const Class2Record *) ((char *) class1Record->class2RecordArray + (class2RecordSize * class2));
+
+
+        if (valueFormat1 != 0) {
+            class2Record->valueRecord1.adjustPosition(SWAPW(valueFormat1), (char *) this, tempIterator, fontInstance);
+        }
+
+        if (valueFormat2 != 0) {
+            const ValueRecord *valueRecord2 = (const ValueRecord *) ((char *) &class2Record->valueRecord1 + valueRecord1Size);
+
+            valueRecord2->adjustPosition(SWAPW(valueFormat2), (const char *) this, *glyphIterator, fontInstance);
+        }
+
+        return 2;
+    }
+
+    return 0;
+}
+
+const PairValueRecord *PairPositioningFormat1Subtable::findPairValueRecord(TTGlyphID glyphID, const PairValueRecord *records, le_uint16 recordCount, le_uint16 recordSize) const
+{
+    le_uint8 bit = OpenTypeUtilities::highBit(recordCount);
+    le_uint16 power = 1 << bit;
+    le_uint16 extra = (recordCount - power) * recordSize;
+    le_uint16 probe = power * recordSize;
+    const PairValueRecord *record = records;
+    const PairValueRecord *trial = (const PairValueRecord *) ((char *) record + extra);
+
+    if (SWAPW(trial->secondGlyph) <= glyphID) {
+        record = trial;
+    }
+
+    while (probe > recordSize) {
+        probe >>= 1;
+        trial = (const PairValueRecord *) ((char *) record + probe);
+
+        if (SWAPW(trial->secondGlyph) <= glyphID) {
+            record = trial;
+        }
+    }
+
+    if (SWAPW(record->secondGlyph) == glyphID) {
+        return record;
+    }
+
+    return NULL;
+}
+
+U_NAMESPACE_END