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48 lines
1.7 KiB
48 lines
1.7 KiB
2 years ago
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// Copyright 2013 Google Inc. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// Functions for normalizing fonts. Since the WOFF 2.0 decoder creates font
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// files in normalized form, the WOFF 2.0 conversion is guaranteed to be
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// lossless (in a bitwise sense) only for normalized font files.
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#ifndef WOFF2_NORMALIZE_H_
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#define WOFF2_NORMALIZE_H_
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namespace woff2 {
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struct Font;
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struct FontCollection;
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// Changes the offset fields of the table headers so that the data for the
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// tables will be written in order of increasing tag values, without any gaps
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// other than the 4-byte padding.
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bool NormalizeOffsets(Font* font);
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// Changes the checksum fields of the table headers and the checksum field of
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// the head table so that it matches the current data.
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bool FixChecksums(Font* font);
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// Parses each of the glyphs in the font and writes them again to the glyf
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// table in normalized form, as defined by the StoreGlyph() function. Changes
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// the loca table accordigly.
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bool NormalizeGlyphs(Font* font);
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// Performs all of the normalization steps above.
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bool NormalizeFont(Font* font);
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bool NormalizeFontCollection(FontCollection* font_collection);
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} // namespace woff2
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#endif // WOFF2_NORMALIZE_H_
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