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| 1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "hhea.h" | 5 #include "hhea.h" |
| 6 | 6 |
| 7 #include "head.h" | 7 #include "head.h" |
| 8 #include "maxp.h" | 8 #include "maxp.h" |
| 9 | 9 |
| 10 // hhea - Horizontal Header | 10 // hhea - Horizontal Header |
| 11 // http://www.microsoft.com/typography/otspec/hhea.htm | 11 // http://www.microsoft.com/typography/otspec/hhea.htm |
| 12 | 12 |
| 13 #define TABLE_NAME "hhea" | 13 #define TABLE_NAME "hhea" |
| 14 | 14 |
| 15 namespace ots { | 15 namespace ots { |
| 16 | 16 |
| 17 bool ots_hhea_parse(OpenTypeFile *file, const uint8_t *data, size_t length) { | 17 bool ots_hhea_parse(Font *font, const uint8_t *data, size_t length) { |
| 18 Buffer table(data, length); | 18 Buffer table(data, length); |
| 19 OpenTypeHHEA *hhea = new OpenTypeHHEA; | 19 OpenTypeHHEA *hhea = new OpenTypeHHEA; |
| 20 file->hhea = hhea; | 20 font->hhea = hhea; |
| 21 | 21 |
| 22 if (!table.ReadU32(&hhea->header.version)) { | 22 if (!table.ReadU32(&hhea->header.version)) { |
| 23 return OTS_FAILURE_MSG("Failed to read hhea version"); | 23 return OTS_FAILURE_MSG("Failed to read hhea version"); |
| 24 } | 24 } |
| 25 if (hhea->header.version >> 16 != 1) { | 25 if (hhea->header.version >> 16 != 1) { |
| 26 return OTS_FAILURE_MSG("Bad hhea version of %d", hhea->header.version); | 26 return OTS_FAILURE_MSG("Bad hhea version of %d", hhea->header.version); |
| 27 } | 27 } |
| 28 | 28 |
| 29 if (!ParseMetricsHeader(file, &table, &hhea->header)) { | 29 if (!ParseMetricsHeader(font, &table, &hhea->header)) { |
| 30 return OTS_FAILURE_MSG("Failed to parse horizontal metrics"); | 30 return OTS_FAILURE_MSG("Failed to parse horizontal metrics"); |
| 31 } | 31 } |
| 32 | 32 |
| 33 return true; | 33 return true; |
| 34 } | 34 } |
| 35 | 35 |
| 36 bool ots_hhea_should_serialise(OpenTypeFile *file) { | 36 bool ots_hhea_should_serialise(Font *font) { |
| 37 return file->hhea != NULL; | 37 return font->hhea != NULL; |
| 38 } | 38 } |
| 39 | 39 |
| 40 bool ots_hhea_serialise(OTSStream *out, OpenTypeFile *file) { | 40 bool ots_hhea_serialise(OTSStream *out, Font *font) { |
| 41 if (!SerialiseMetricsHeader(file, out, &file->hhea->header)) { | 41 if (!SerialiseMetricsHeader(font, out, &font->hhea->header)) { |
| 42 return OTS_FAILURE_MSG("Failed to serialise horizontal metrics"); | 42 return OTS_FAILURE_MSG("Failed to serialise horizontal metrics"); |
| 43 } | 43 } |
| 44 return true; | 44 return true; |
| 45 } | 45 } |
| 46 | 46 |
| 47 void ots_hhea_free(OpenTypeFile *file) { | 47 void ots_hhea_reuse(Font *font, Font *other) { |
| 48 delete file->hhea; | 48 font->hhea = other->hhea; |
| 49 font->hhea_reused = true; |
| 50 } |
| 51 |
| 52 void ots_hhea_free(Font *font) { |
| 53 delete font->hhea; |
| 49 } | 54 } |
| 50 | 55 |
| 51 } // namespace ots | 56 } // namespace ots |
| 52 | 57 |
| 53 #undef TABLE_NAME | 58 #undef TABLE_NAME |
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