fontservices/textshaperplugin/IcuSource/layout/ClassDefinitionTables.cpp
changeset 0 1fb32624e06b
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/fontservices/textshaperplugin/IcuSource/layout/ClassDefinitionTables.cpp	Tue Feb 02 02:02:46 2010 +0200
@@ -0,0 +1,120 @@
+/*
+ *
+ * (C) Copyright IBM Corp. 1998-2004 - All Rights Reserved
+ *
+ */
+
+#include "LETypes.h"
+#include "OpenTypeTables.h"
+#include "OpenTypeUtilities.h"
+#include "ClassDefinitionTables.h"
+#include "LESwaps.h"
+
+U_NAMESPACE_BEGIN
+
+le_int32 ClassDefinitionTable::getGlyphClass(LEGlyphID glyphID) const
+{
+    switch(SWAPW(classFormat)) {
+    case 0:
+        return 0;
+
+    case 1:
+    {
+        const ClassDefFormat1Table *f1Table = (const ClassDefFormat1Table *) this;
+
+        return f1Table->getGlyphClass(glyphID);
+    }
+
+    case 2:
+    {
+        const ClassDefFormat2Table *f2Table = (const ClassDefFormat2Table *) this;
+
+        return f2Table->getGlyphClass(glyphID);
+    }
+
+    default:
+        return 0;
+    }
+}
+
+le_bool ClassDefinitionTable::hasGlyphClass(le_int32 glyphClass) const
+{
+    switch(SWAPW(classFormat)) {
+    case 0:
+        return 0;
+
+    case 1:
+    {
+        const ClassDefFormat1Table *f1Table = (const ClassDefFormat1Table *) this;
+
+        return f1Table->hasGlyphClass(glyphClass);
+    }
+
+    case 2:
+    {
+        const ClassDefFormat2Table *f2Table = (const ClassDefFormat2Table *) this;
+
+        return f2Table->hasGlyphClass(glyphClass);
+    }
+
+    default:
+        return 0;
+    }
+}
+
+le_int32 ClassDefFormat1Table::getGlyphClass(LEGlyphID glyphID) const
+{
+    TTGlyphID ttGlyphID  = (TTGlyphID) LE_GET_GLYPH(glyphID);
+    TTGlyphID firstGlyph = SWAPW(startGlyph);
+    TTGlyphID lastGlyph  = firstGlyph + SWAPW(glyphCount);
+
+    if (ttGlyphID > firstGlyph && ttGlyphID < lastGlyph) {
+        return SWAPW(classValueArray[ttGlyphID - firstGlyph]);
+    }
+
+    return 0;
+}
+
+le_bool ClassDefFormat1Table::hasGlyphClass(le_int32 glyphClass) const
+{
+    le_uint16 count  = SWAPW(glyphCount);
+    int i;
+
+    for (i = 0; i < count; i += 1) {
+        if (SWAPW(classValueArray[i]) == glyphClass) {
+            return TRUE;
+        }
+    }
+
+    return FALSE;
+}
+
+le_int32 ClassDefFormat2Table::getGlyphClass(LEGlyphID glyphID) const
+{
+    TTGlyphID ttGlyph    = (TTGlyphID) LE_GET_GLYPH(glyphID);
+    le_uint16 rangeCount = SWAPW(classRangeCount);
+    le_int32  rangeIndex =
+        OpenTypeUtilities::getGlyphRangeIndex(ttGlyph, classRangeRecordArray, rangeCount);
+
+    if (rangeIndex < 0) {
+        return 0;
+    }
+
+    return SWAPW(classRangeRecordArray[rangeIndex].rangeValue);
+}
+
+le_bool ClassDefFormat2Table::hasGlyphClass(le_int32 glyphClass) const
+{
+    le_uint16 rangeCount = SWAPW(classRangeCount);
+    int i;
+
+    for (i = 0; i < rangeCount; i += 1) {
+        if (SWAPW(classRangeRecordArray[i].rangeValue) == glyphClass) {
+            return TRUE;
+        }
+    }
+
+    return FALSE;
+}
+
+U_NAMESPACE_END