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 
23 namespace sfntly {
24 // Format 2 Index Subtable Entry.
25 class 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);
~BitmapGlyphInfoIterator()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 };
101 typedef Ptr<IndexSubTableFormat2> IndexSubTableFormat2Ptr;
102 typedef Ptr<IndexSubTableFormat2::Builder> IndexSubTableFormat2BuilderPtr;
103 
104 }  // namespace sfntly
105 
106 #endif  // SFNTLY_CPP_SRC_SFNTLY_TABLE_BITMAP_INDEX_SUBTABLE_FORMAT1_H_
107