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_COMPOSITE_BITMAP_GLYPH_H_
18#define SFNTLY_CPP_SRC_SFNTLY_TABLE_BITMAP_COMPOSITE_BITMAP_GLYPH_H_
19
20#include "sfntly/table/bitmap/bitmap_glyph.h"
21
22namespace sfntly {
23
24class CompositeBitmapGlyph : public BitmapGlyph,
25                             public RefCounted<CompositeBitmapGlyph> {
26 public:
27  class Component {
28   public:
29    Component(const Component& rhs);
30
31    int32_t glyph_code() { return glyph_code_; }
32    int32_t x_offset() { return x_offset_; }
33    int32_t y_offset() { return y_offset_; }
34
35    // UNIMPLEMENTED: int hashCode()
36    bool operator==(const Component& rhs);
37    Component& operator=(const Component& rhs);
38
39   protected:
40    Component(int32_t glyph_code, int32_t x_offset, int32_t y_offset);
41
42   private:
43    int32_t glyph_code_;
44    int32_t x_offset_;
45    int32_t y_offset_;
46
47    friend class CompositeBitmapGlyph;
48  };
49
50  class Builder : public BitmapGlyph::Builder,
51                  public RefCounted<Builder> {
52   public:
53    Builder(WritableFontData* data, int32_t format);
54    Builder(ReadableFontData* data, int32_t format);
55    virtual ~Builder();
56
57    virtual CALLER_ATTACH FontDataTable* SubBuildTable(ReadableFontData* data);
58  };
59
60  CompositeBitmapGlyph(ReadableFontData* data, int32_t format);
61  virtual ~CompositeBitmapGlyph();
62  int32_t NumComponents();
63  // Note: returned immutable object over stack.
64  Component GetComponent(int32_t component_num) const;
65
66 private:
67  void Initialize(int32_t format);
68
69  int32_t num_components_offset_;
70  int32_t component_array_offset_;
71};
72
73}  // namespace sfntly
74
75#endif  // SFNTLY_CPP_SRC_SFNTLY_TABLE_BITMAP_COMPOSITE_BITMAP_GLYPH_H_
76