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Commit	Line	Data
	1	/*
	2	*
	3	* (C) Copyright IBM Corp. 1998-2013 - All Rights Reserved
	4	*
	5	*/
	6
	7	#include "LETypes.h"
	8	#include "OpenTypeTables.h"
	9	#include "OpenTypeUtilities.h"
	10	#include "ClassDefinitionTables.h"
	11	#include "LESwaps.h"
	12
	13	U_NAMESPACE_BEGIN
	14
	15	le_int32 ClassDefinitionTable::getGlyphClass(const LETableReference& base, LEGlyphID glyphID, LEErrorCode &success) const
	16	{
	17	LEReferenceTo<ClassDefinitionTable> thisRef(base, success);
	18	if (LE_FAILURE(success)) return 0;
	19
	20	switch(SWAPW(classFormat)) {
	21	case 0:
	22	return 0;
	23
	24	case 1:
	25	{
	26	const LEReferenceTo<ClassDefFormat1Table> f1Table(thisRef, success);
	27	return f1Table->getGlyphClass(f1Table, glyphID, success);
	28	}
	29
	30	case 2:
	31	{
	32	const LEReferenceTo<ClassDefFormat2Table> f2Table(thisRef, success);
	33	return f2Table->getGlyphClass(f2Table, glyphID, success);
	34	}
	35
	36	default:
	37	return 0;
	38	}
	39	}
	40
	41	le_bool ClassDefinitionTable::hasGlyphClass(const LETableReference &base, le_int32 glyphClass, LEErrorCode &success) const
	42	{
	43	LEReferenceTo<ClassDefinitionTable> thisRef(base, success);
	44	if (LE_FAILURE(success)) return 0;
	45
	46	switch(SWAPW(classFormat)) {
	47	case 0:
	48	return 0;
	49
	50	case 1:
	51	{
	52	const LEReferenceTo<ClassDefFormat1Table> f1Table(thisRef, success);
	53	return f1Table->hasGlyphClass(f1Table, glyphClass, success);
	54	}
	55
	56	case 2:
	57	{
	58	const LEReferenceTo<ClassDefFormat2Table> f2Table(thisRef, success);
	59	return f2Table->hasGlyphClass(f2Table, glyphClass, success);
	60	}
	61
	62	default:
	63	return 0;
	64	}
	65	}
	66
	67	le_int32 ClassDefFormat1Table::getGlyphClass(const LETableReference& base, LEGlyphID glyphID, LEErrorCode &success) const
	68	{
	69	if(LE_FAILURE(success)) return 0;
	70
	71	le_uint16 count = SWAPW(glyphCount);
	72	LEReferenceToArrayOf<le_uint16> classValueArrayRef(base, success, &classValueArray[0], count);
	73	TTGlyphID ttGlyphID = (TTGlyphID) LE_GET_GLYPH(glyphID);
	74	TTGlyphID firstGlyph = SWAPW(startGlyph);
	75	TTGlyphID lastGlyph = firstGlyph + count;
	76
	77	if (LE_SUCCESS(success) && ttGlyphID >= firstGlyph && ttGlyphID < lastGlyph) {
	78	return SWAPW( classValueArrayRef(ttGlyphID - firstGlyph, success) );
	79	}
	80
	81	return 0;
	82	}
	83
	84	le_bool ClassDefFormat1Table::hasGlyphClass(const LETableReference &base, le_int32 glyphClass, LEErrorCode &success) const
	85	{
	86	if(LE_FAILURE(success)) return 0;
	87	le_uint16 count = SWAPW(glyphCount);
	88	LEReferenceToArrayOf<le_uint16> classValueArrayRef(base, success, &classValueArray[0], count);
	89	int i;
	90
	91	for (i = 0; LE_SUCCESS(success)&& (i < count); i += 1) {
	92	if (SWAPW(classValueArrayRef(i,success)) == glyphClass) {
	93	return TRUE;
	94	}
	95	}
	96
	97	return FALSE;
	98	}
	99
	100	le_int32 ClassDefFormat2Table::getGlyphClass(const LETableReference& base, LEGlyphID glyphID, LEErrorCode &success) const
	101	{
	102	if(LE_FAILURE(success)) return 0;
	103	TTGlyphID ttGlyph = (TTGlyphID) LE_GET_GLYPH(glyphID);
	104	le_uint16 rangeCount = SWAPW(classRangeCount);
	105	LEReferenceToArrayOf<GlyphRangeRecord> classRangeRecordArrayRef(base, success, &classRangeRecordArray[0], rangeCount);
	106	le_int32 rangeIndex =
	107	OpenTypeUtilities::getGlyphRangeIndex(ttGlyph, classRangeRecordArrayRef, success);
	108
	109	if (rangeIndex < 0 \|\| LE_FAILURE(success)) {
	110	return 0;
	111	}
	112
	113	return SWAPW(classRangeRecordArrayRef(rangeIndex, success).rangeValue);
	114	}
	115
	116	le_bool ClassDefFormat2Table::hasGlyphClass(const LETableReference &base, le_int32 glyphClass, LEErrorCode &success) const
	117	{
	118	if(LE_FAILURE(success)) return 0;
	119	le_uint16 rangeCount = SWAPW(classRangeCount);
	120	LEReferenceToArrayOf<GlyphRangeRecord> classRangeRecordArrayRef(base, success, &classRangeRecordArray[0], rangeCount);
	121	int i;
	122
	123	for (i = 0; i < rangeCount && LE_SUCCESS(success); i += 1) {
	124	if (SWAPW(classRangeRecordArrayRef(i,success).rangeValue) == glyphClass) {
	125	return TRUE;
	126	}
	127	}
	128
	129	return FALSE;
	130	}
	131
	132	U_NAMESPACE_END