Line data    Source code

       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             : 
      25             : namespace sfntly {
      26             : 
      27             : // An immutable class holding bitmap glyph information.
      28           0 : class 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           0 :   int32_t glyph_id() const { return glyph_id_; }
      55             :   bool relative() const { return relative_; }
      56           0 :   int32_t block_offset() const { return block_offset_; }
      57           0 :   int32_t offset() const { return block_offset() + start_offset(); }
      58           0 :   int32_t start_offset() const { return start_offset_; }
      59           0 :   int32_t length() const { return length_; }
      60           0 :   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             : };
      74             : typedef Ptr<BitmapGlyphInfo> BitmapGlyphInfoPtr;
      75             : typedef std::map<int32_t, BitmapGlyphInfoPtr> BitmapGlyphInfoMap;
      76             : typedef std::vector<BitmapGlyphInfoMap> BitmapLocaList;
      77             : 
      78             : class 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_