1/*
2 * Copyright 2011 Google Inc. All Rights Reserved.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef SFNTLY_CPP_SRC_SFNTLY_TABLE_BITMAP_INDEX_SUBTABLE_FORMAT2_H_
18#define SFNTLY_CPP_SRC_SFNTLY_TABLE_BITMAP_INDEX_SUBTABLE_FORMAT2_H_
19
20#include "sfntly/table/bitmap/index_sub_table.h"
21#include "sfntly/table/bitmap/big_glyph_metrics.h"
22
23namespace sfntly {
24// Format 2 Index Subtable Entry.
25class IndexSubTableFormat2 : public IndexSubTable,
26                             public RefCounted<IndexSubTableFormat2> {
27 public:
28  class Builder : public IndexSubTable::Builder,
29                  public RefCounted<Builder> {
30   public:
31    class BitmapGlyphInfoIterator
32        : public RefIterator<BitmapGlyphInfo, Builder, IndexSubTable::Builder> {
33     public:
34      explicit BitmapGlyphInfoIterator(Builder* container);
35      virtual ~BitmapGlyphInfoIterator() {}
36
37      virtual bool HasNext();
38      CALLER_ATTACH virtual BitmapGlyphInfo* Next();
39
40     private:
41      int32_t glyph_id_;
42    };
43
44    virtual ~Builder();
45    virtual int32_t NumGlyphs();
46    virtual int32_t GlyphStartOffset(int32_t glyph_id);
47    virtual int32_t GlyphLength(int32_t glyph_id);
48    CALLER_ATTACH virtual BitmapGlyphInfoIterator* GetIterator();
49
50    virtual CALLER_ATTACH FontDataTable* SubBuildTable(ReadableFontData* data);
51    virtual void SubDataSet();
52    virtual int32_t SubDataSizeToSerialize();
53    virtual bool SubReadyToSerialize();
54    virtual int32_t SubSerialize(WritableFontData* new_data);
55
56    int32_t ImageSize();
57    void SetImageSize(int32_t image_size);
58    BigGlyphMetrics::Builder* BigMetrics();
59
60    static CALLER_ATTACH Builder* CreateBuilder();
61    static CALLER_ATTACH Builder* CreateBuilder(ReadableFontData* data,
62                                                int32_t index_sub_table_offset,
63                                                int32_t first_glyph_index,
64                                                int32_t last_glyph_index);
65    static CALLER_ATTACH Builder* CreateBuilder(WritableFontData* data,
66                                                int32_t index_sub_table_offset,
67                                                int32_t first_glyph_index,
68                                                int32_t last_glyph_index);
69   private:
70    Builder();
71    Builder(WritableFontData* data,
72            int32_t first_glyph_index,
73            int32_t last_glyph_index);
74    Builder(ReadableFontData* data,
75            int32_t first_glyph_index,
76            int32_t last_glyph_index);
77
78    static int32_t DataLength(ReadableFontData* data,
79                              int32_t index_sub_table_offset,
80                              int32_t first_glyph_index,
81                              int32_t last_glyph_index);
82
83    BigGlyphMetricsBuilderPtr metrics_;
84  };
85
86  virtual ~IndexSubTableFormat2();
87
88  int32_t ImageSize();
89  CALLER_ATTACH BigGlyphMetrics* BigMetrics();
90
91  virtual int32_t NumGlyphs();
92  virtual int32_t GlyphStartOffset(int32_t glyph_id);
93  virtual int32_t GlyphLength(int32_t glyph_id);
94
95 private:
96  IndexSubTableFormat2(ReadableFontData* data, int32_t first, int32_t last);
97
98  int32_t image_size_;
99  friend class Builder;
100};
101typedef Ptr<IndexSubTableFormat2> IndexSubTableFormat2Ptr;
102typedef Ptr<IndexSubTableFormat2::Builder> IndexSubTableFormat2BuilderPtr;
103
104}  // namespace sfntly
105
106#endif  // SFNTLY_CPP_SRC_SFNTLY_TABLE_BITMAP_INDEX_SUBTABLE_FORMAT1_H_
107