1/*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
3 *
4 * This code is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 only, as
6 * published by the Free Software Foundation.  Oracle designates this
7 * particular file as subject to the "Classpath" exception as provided
8 * by Oracle in the LICENSE file that accompanied this code.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26/*
27 *
28 *
29 * (C) Copyright IBM Corp. 1998-2008 - All Rights Reserved
30 *
31 */
32
33#ifndef __LOOKUPPROCESSOR_H
34#define __LOOKUPPROCESSOR_H
35
36/**
37 * \file
38 * \internal
39 */
40
41#include "LETypes.h"
42#include "LEFontInstance.h"
43#include "OpenTypeTables.h"
44#include "LETableReference.h"
45//#include "Lookups.h"
46//#include "Features.h"
47
48U_NAMESPACE_BEGIN
49
50class  LEFontInstance;
51class  LEGlyphStorage;
52class  GlyphIterator;
53class  GlyphPositionAdjustments;
54struct FeatureTable;
55struct FeatureListTable;
56struct GlyphDefinitionTableHeader;
57struct LookupSubtable;
58struct LookupTable;
59
60class LookupProcessor : public UMemory {
61public:
62    le_int32 process(LEGlyphStorage &glyphStorage, GlyphPositionAdjustments *glyphPositionAdjustments,
63                 le_bool rightToLeft, const LEReferenceTo<GlyphDefinitionTableHeader> &glyphDefinitionTableHeader, const LEFontInstance *fontInstance, LEErrorCode& success) const;
64
65    le_uint32 applyLookupTable(const LEReferenceTo<LookupTable> &lookupTable, GlyphIterator *glyphIterator, const LEFontInstance *fontInstance, LEErrorCode& success) const;
66
67    le_uint32 applySingleLookup(le_uint16 lookupTableIndex, GlyphIterator *glyphIterator, const LEFontInstance *fontInstance, LEErrorCode& success) const;
68
69    virtual le_uint32 applySubtable(const LEReferenceTo<LookupSubtable> &lookupSubtable, le_uint16 subtableType,
70        GlyphIterator *glyphIterator, const LEFontInstance *fontInstance, LEErrorCode& success) const = 0;
71
72    virtual ~LookupProcessor();
73
74    const LETableReference &getReference() const { return fReference; }
75
76protected:
77    LookupProcessor(const LETableReference &baseAddress,
78        Offset scriptListOffset,
79        Offset featureListOffset,
80        Offset lookupListOffset,
81        LETag scriptTag,
82        LETag languageTag,
83        const FeatureMap *featureMap,
84        le_int32 featureMapCount,
85        le_bool orderFeatures,
86        LEErrorCode& success);
87
88   LookupProcessor();
89
90    le_int32 selectLookups(const LEReferenceTo<FeatureTable> &featureTable, FeatureMask featureMask, le_int32 order, LEErrorCode &success);
91
92    LEReferenceTo<LookupListTable>   lookupListTable;
93    LEReferenceTo<FeatureListTable>  featureListTable;
94
95    FeatureMask            *lookupSelectArray;
96    le_uint32              lookupSelectCount;
97
98    le_uint16               *lookupOrderArray;
99    le_uint32               lookupOrderCount;
100
101    LETableReference        fReference;
102
103private:
104
105    LookupProcessor(const LookupProcessor &other); // forbid copying of this class
106    LookupProcessor &operator=(const LookupProcessor &other); // forbid copying of this class
107};
108
109U_NAMESPACE_END
110#endif
111