/gfx/ots/src/layout.h
C Header | 68 lines | 42 code | 19 blank | 7 comment | 0 complexity | 3aebaeb2318e166d7c23596c29527f6e MD5 | raw file
Possible License(s): MPL-2.0-no-copyleft-exception, LGPL-3.0, AGPL-1.0, LGPL-2.1, BSD-3-Clause, GPL-2.0, JSON, Apache-2.0, 0BSD
- // Copyright (c) 2011 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #ifndef OTS_LAYOUT_H_
- #define OTS_LAYOUT_H_
- #include "ots.h"
- // Utility functions for OpenType layout common table formats.
- // http://www.microsoft.com/typography/otspec/chapter2.htm
- namespace ots {
- struct LookupSubtableParser {
- struct TypeParser {
- uint16_t type;
- bool (*parse)(const OpenTypeFile *file, const uint8_t *data,
- const size_t length);
- };
- size_t num_types;
- uint16_t extension_type;
- const TypeParser *parsers;
- bool Parse(const OpenTypeFile *file, const uint8_t *data,
- const size_t length, const uint16_t lookup_type) const;
- };
- bool ParseScriptListTable(const uint8_t *data, const size_t length,
- const uint16_t num_features);
- bool ParseFeatureListTable(const uint8_t *data, const size_t length,
- const uint16_t num_lookups,
- uint16_t *num_features);
- bool ParseLookupListTable(OpenTypeFile *file, const uint8_t *data,
- const size_t length,
- const LookupSubtableParser* parser,
- uint16_t* num_lookups);
- bool ParseClassDefTable(const uint8_t *data, size_t length,
- const uint16_t num_glyphs,
- const uint16_t num_classes);
- bool ParseCoverageTable(const uint8_t *data, size_t length,
- const uint16_t num_glyphs);
- bool ParseDeviceTable(const uint8_t *data, size_t length);
- // Parser for 'Contextual' subtable shared by GSUB/GPOS tables.
- bool ParseContextSubtable(const uint8_t *data, const size_t length,
- const uint16_t num_glyphs,
- const uint16_t num_lookups);
- // Parser for 'Chaining Contextual' subtable shared by GSUB/GPOS tables.
- bool ParseChainingContextSubtable(const uint8_t *data, const size_t length,
- const uint16_t num_glyphs,
- const uint16_t num_lookups);
- bool ParseExtensionSubtable(const OpenTypeFile *file,
- const uint8_t *data, const size_t length,
- const LookupSubtableParser* parser);
- } // namespace ots
- #endif // OTS_LAYOUT_H_