diff options
Diffstat (limited to 'sfntly/table/bitmap/index_sub_table.h')
-rw-r--r-- | sfntly/table/bitmap/index_sub_table.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/sfntly/table/bitmap/index_sub_table.h b/sfntly/table/bitmap/index_sub_table.h new file mode 100644 index 0000000..253f165 --- /dev/null +++ b/sfntly/table/bitmap/index_sub_table.h @@ -0,0 +1,64 @@ +/* + * Copyright 2011 Google Inc. All Rights Reserved. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef SFNTLY_CPP_SRC_SFNTLY_TABLE_BITMAP_INDEX_SUBTABLE_H_ +#define SFNTLY_CPP_SRC_SFNTLY_TABLE_BITMAP_INDEX_SUBTABLE_H_ + +#include <vector> + +#include "sfntly/table/subtable.h" + +namespace sfntly { + +class IndexSubTable : public SubTable { + public: + int32_t first_glyph_index() { return first_glyph_index_; } + int32_t last_glyph_index() { return last_glyph_index_; } + int32_t image_format() { return image_format_; } + int32_t image_data_offset() { return image_data_offset_; } + + virtual int32_t GlyphOffset(int32_t glyph_id) = 0; + virtual int32_t GlyphLength(int32_t glyph_id) = 0; + virtual int32_t NumGlyphs() = 0; + + static CALLER_ATTACH IndexSubTable* + CreateIndexSubTable(ReadableFontData* data, + int32_t offset_to_index_sub_table_array, + int32_t array_index); + + protected: + // Note: the constructor does not implement offset/length form provided in + // Java to avoid heavy lifting in constructors. Callers to call + // GetDataLength() static method of the derived class to get proper + // length and slice ahead. + IndexSubTable(ReadableFontData* data, int32_t first, int32_t last); + + // Note: change return type to bool in C++ since we may not throw. + bool CheckGlyphRange(int32_t glyph_id); + + private: + int32_t first_glyph_index_; + int32_t last_glyph_index_; + int32_t index_format_; + int32_t image_format_; + int32_t image_data_offset_; +}; +typedef Ptr<IndexSubTable> IndexSubTablePtr; +typedef std::vector<IndexSubTablePtr> IndexSubTableList; + +} // namespace sfntly + +#endif // SFNTLY_CPP_SRC_SFNTLY_TABLE_BITMAP_INDEX_SUBTABLE_H_ |