| // Copyright 2013 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. |
| // |
| // Functions for normalizing fonts. Since the WOFF 2.0 decoder creates font |
| // files in normalized form, the WOFF 2.0 conversion is guaranteed to be |
| // lossless (in a bitwise sense) only for normalized font files. |
| |
| #ifndef WOFF2_NORMALIZE_H_ |
| #define WOFF2_NORMALIZE_H_ |
| |
| namespace woff2 { |
| |
| struct Font; |
| struct FontCollection; |
| |
| // Changes the offset fields of the table headers so that the data for the |
| // tables will be written in order of increasing tag values, without any gaps |
| // other than the 4-byte padding. |
| bool NormalizeOffsets(Font* font); |
| |
| // Changes the checksum fields of the table headers and the checksum field of |
| // the head table so that it matches the current data. |
| bool FixChecksums(Font* font); |
| |
| // Parses each of the glyphs in the font and writes them again to the glyf |
| // table in normalized form, as defined by the StoreGlyph() function. Changes |
| // the loca table accordigly. |
| bool NormalizeGlyphs(Font* font); |
| |
| // Performs all of the normalization steps above. |
| bool NormalizeFont(Font* font); |
| bool NormalizeFontCollection(FontCollection* font_collection); |
| |
| } // namespace woff2 |
| |
| #endif // WOFF2_NORMALIZE_H_ |
