133 lines
3.8 KiB
C++
133 lines
3.8 KiB
C++
/*
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*
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* (C) Copyright IBM Corp. 1998-2013 - All Rights Reserved
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*
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*/
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#include "LETypes.h"
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#include "OpenTypeTables.h"
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#include "OpenTypeUtilities.h"
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#include "ClassDefinitionTables.h"
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#include "LESwaps.h"
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U_NAMESPACE_BEGIN
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le_int32 ClassDefinitionTable::getGlyphClass(const LETableReference& base, LEGlyphID glyphID, LEErrorCode &success) const
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{
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LEReferenceTo<ClassDefinitionTable> thisRef(base, success);
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if (LE_FAILURE(success)) return 0;
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switch(SWAPW(classFormat)) {
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case 0:
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return 0;
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case 1:
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{
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const LEReferenceTo<ClassDefFormat1Table> f1Table(thisRef, success);
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return f1Table->getGlyphClass(f1Table, glyphID, success);
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}
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case 2:
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{
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const LEReferenceTo<ClassDefFormat2Table> f2Table(thisRef, success);
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return f2Table->getGlyphClass(f2Table, glyphID, success);
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}
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default:
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return 0;
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}
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}
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le_bool ClassDefinitionTable::hasGlyphClass(const LETableReference &base, le_int32 glyphClass, LEErrorCode &success) const
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{
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LEReferenceTo<ClassDefinitionTable> thisRef(base, success);
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if (LE_FAILURE(success)) return 0;
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switch(SWAPW(classFormat)) {
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case 0:
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return 0;
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case 1:
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{
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const LEReferenceTo<ClassDefFormat1Table> f1Table(thisRef, success);
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return f1Table->hasGlyphClass(f1Table, glyphClass, success);
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}
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case 2:
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{
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const LEReferenceTo<ClassDefFormat2Table> f2Table(thisRef, success);
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return f2Table->hasGlyphClass(f2Table, glyphClass, success);
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}
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default:
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return 0;
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}
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}
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le_int32 ClassDefFormat1Table::getGlyphClass(const LETableReference& base, LEGlyphID glyphID, LEErrorCode &success) const
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{
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if(LE_FAILURE(success)) return 0;
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le_uint16 count = SWAPW(glyphCount);
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LEReferenceToArrayOf<le_uint16> classValueArrayRef(base, success, &classValueArray[0], count);
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TTGlyphID ttGlyphID = (TTGlyphID) LE_GET_GLYPH(glyphID);
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TTGlyphID firstGlyph = SWAPW(startGlyph);
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TTGlyphID lastGlyph = firstGlyph + count;
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if (LE_SUCCESS(success) && ttGlyphID >= firstGlyph && ttGlyphID < lastGlyph) {
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return SWAPW( classValueArrayRef(ttGlyphID - firstGlyph, success) );
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}
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return 0;
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}
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le_bool ClassDefFormat1Table::hasGlyphClass(const LETableReference &base, le_int32 glyphClass, LEErrorCode &success) const
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{
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if(LE_FAILURE(success)) return 0;
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le_uint16 count = SWAPW(glyphCount);
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LEReferenceToArrayOf<le_uint16> classValueArrayRef(base, success, &classValueArray[0], count);
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int i;
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for (i = 0; LE_SUCCESS(success)&& (i < count); i += 1) {
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if (SWAPW(classValueArrayRef(i,success)) == glyphClass) {
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return TRUE;
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}
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}
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return FALSE;
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}
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le_int32 ClassDefFormat2Table::getGlyphClass(const LETableReference& base, LEGlyphID glyphID, LEErrorCode &success) const
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{
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if(LE_FAILURE(success)) return 0;
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TTGlyphID ttGlyph = (TTGlyphID) LE_GET_GLYPH(glyphID);
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le_uint16 rangeCount = SWAPW(classRangeCount);
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LEReferenceToArrayOf<GlyphRangeRecord> classRangeRecordArrayRef(base, success, &classRangeRecordArray[0], rangeCount);
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le_int32 rangeIndex =
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OpenTypeUtilities::getGlyphRangeIndex(ttGlyph, classRangeRecordArrayRef, success);
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if (rangeIndex < 0 || LE_FAILURE(success)) {
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return 0;
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}
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return SWAPW(classRangeRecordArrayRef(rangeIndex, success).rangeValue);
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}
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le_bool ClassDefFormat2Table::hasGlyphClass(const LETableReference &base, le_int32 glyphClass, LEErrorCode &success) const
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{
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if(LE_FAILURE(success)) return 0;
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le_uint16 rangeCount = SWAPW(classRangeCount);
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LEReferenceToArrayOf<GlyphRangeRecord> classRangeRecordArrayRef(base, success, &classRangeRecordArray[0], rangeCount);
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int i;
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for (i = 0; i < rangeCount && LE_SUCCESS(success); i += 1) {
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if (SWAPW(classRangeRecordArrayRef(i,success).rangeValue) == glyphClass) {
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return TRUE;
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}
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}
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return FALSE;
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}
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U_NAMESPACE_END
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