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_GLYPH_INFO_H_
18#define SFNTLY_CPP_SRC_SFNTLY_TABLE_BITMAP_GLYPH_INFO_H_
19
20#include <vector>
21#include <map>
22
23#include "sfntly/table/subtable.h"
24
25namespace sfntly {
26
27// An immutable class holding bitmap glyph information.
28class BitmapGlyphInfo : public RefCounted<BitmapGlyphInfo> {
29 public:
30  // Constructor for a relative located glyph. The glyph's position in the EBDT
31  // table is a combination of it's block offset and it's own start offset.
32  // @param glyphId the glyph id
33  // @param blockOffset the offset of the block to which the glyph belongs
34  // @param startOffset the offset of the glyph within the block
35  // @param length the byte length
36  // @param format the glyph image format
37  BitmapGlyphInfo(int32_t glyph_id,
38                  int32_t block_offset,
39                  int32_t start_offset,
40                  int32_t length,
41                  int32_t format);
42
43  // Constructor for an absolute located glyph. The glyph's position in the EBDT
44  // table is only given by it's own start offset.
45  // @param glyphId the glyph id
46  // @param startOffset the offset of the glyph within the block
47  // @param length the byte length
48  // @param format the glyph image format
49  BitmapGlyphInfo(int32_t glyph_id,
50                  int32_t start_offset,
51                  int32_t length,
52                  int32_t format);
53
54  int32_t glyph_id() const { return glyph_id_; }
55  bool relative() const { return relative_; }
56  int32_t block_offset() const { return block_offset_; }
57  int32_t offset() const { return block_offset() + start_offset(); }
58  int32_t start_offset() const { return start_offset_; }
59  int32_t length() const { return length_; }
60  int32_t format() const { return format_; }
61
62  // UNIMPLEMENTED: hashCode()
63  bool operator==(const BitmapGlyphInfo& rhs) const;
64  bool operator==(BitmapGlyphInfo* rhs);
65
66 private:
67  int32_t glyph_id_;
68  bool relative_;
69  int32_t block_offset_;
70  int32_t start_offset_;
71  int32_t length_;
72  int32_t format_;
73};
74typedef Ptr<BitmapGlyphInfo> BitmapGlyphInfoPtr;
75typedef std::map<int32_t, BitmapGlyphInfoPtr> BitmapGlyphInfoMap;
76typedef std::vector<BitmapGlyphInfoMap> BitmapLocaList;
77
78class StartOffsetComparator {
79 public:
80  bool operator()(BitmapGlyphInfo* lhs, BitmapGlyphInfo* rhs);
81};
82
83}  // namespace sfntly
84
85#endif  // SFNTLY_CPP_SRC_SFNTLY_TABLE_BITMAP_GLYPH_INFO_H_
86