1/*
2 * %W% %E%
3 *
4 * (C) Copyright IBM Corp. 1998-2011 - All Rights Reserved
5 *
6 */
7
8#ifndef __LOOKUPPROCESSOR_H
9#define __LOOKUPPROCESSOR_H
10
11/**
12 * \file
13 * \internal
14 */
15
16#include "LETypes.h"
17#include "LEFontInstance.h"
18#include "OpenTypeTables.h"
19//#include "Lookups.h"
20//#include "Features.h"
21
22U_NAMESPACE_BEGIN
23
24class  LEFontInstance;
25class  LEGlyphStorage;
26class  GlyphIterator;
27class  GlyphPositionAdjustments;
28struct FeatureTable;
29struct FeatureListTable;
30struct GlyphDefinitionTableHeader;
31struct LookupSubtable;
32struct LookupTable;
33
34class LookupProcessor : public UMemory {
35public:
36    le_int32 process(LEGlyphStorage &glyphStorage, GlyphPositionAdjustments *glyphPositionAdjustments,
37                 le_bool rightToLeft, const GlyphDefinitionTableHeader *glyphDefinitionTableHeader, const LEFontInstance *fontInstance, LEErrorCode& success) const;
38
39    le_uint32 applyLookupTable(const LookupTable *lookupTable, GlyphIterator *glyphIterator, const LEFontInstance *fontInstance, LEErrorCode& success) const;
40
41    le_uint32 applySingleLookup(le_uint16 lookupTableIndex, GlyphIterator *glyphIterator, const LEFontInstance *fontInstance, LEErrorCode& success) const;
42
43    virtual le_uint32 applySubtable(const LookupSubtable *lookupSubtable, le_uint16 subtableType,
44        GlyphIterator *glyphIterator, const LEFontInstance *fontInstance, LEErrorCode& success) const = 0;
45
46    virtual ~LookupProcessor();
47
48protected:
49    LookupProcessor(const char *baseAddress,
50        Offset scriptListOffset,
51        Offset featureListOffset,
52        Offset lookupListOffset,
53        LETag scriptTag,
54        LETag languageTag,
55        const FeatureMap *featureMap,
56        le_int32 featureMapCount,
57        le_bool orderFeatures,
58        LEErrorCode& success);
59
60    LookupProcessor();
61
62    le_int32 selectLookups(const FeatureTable *featureTable, FeatureMask featureMask, le_int32 order);
63
64    const LookupListTable   *lookupListTable;
65    const FeatureListTable  *featureListTable;
66
67    FeatureMask            *lookupSelectArray;
68    le_uint32              lookupSelectCount;
69
70    le_uint16               *lookupOrderArray;
71    le_uint32               lookupOrderCount;
72
73private:
74
75    LookupProcessor(const LookupProcessor &other); // forbid copying of this class
76    LookupProcessor &operator=(const LookupProcessor &other); // forbid copying of this class
77};
78
79U_NAMESPACE_END
80#endif
81