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comparison: gfx/ots/src/vhea.cc
gfx/ots/src/vhea.cc
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:2a3d1d40b332 |
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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "vhea.h" | |
| 6 | |
| 7 #include "gsub.h" | |
| 8 #include "head.h" | |
| 9 #include "maxp.h" | |
| 10 | |
| 11 // vhea - Vertical Header Table | |
| 12 // http://www.microsoft.com/typography/otspec/vhea.htm | |
| 13 | |
| 14 #define TABLE_NAME "vhea" | |
| 15 | |
| 16 namespace ots { | |
| 17 | |
| 18 bool ots_vhea_parse(OpenTypeFile *file, const uint8_t *data, size_t length) { | |
| 19 Buffer table(data, length); | |
| 20 OpenTypeVHEA *vhea = new OpenTypeVHEA; | |
| 21 file->vhea = vhea; | |
| 22 | |
| 23 if (!table.ReadU32(&vhea->header.version)) { | |
| 24 return OTS_FAILURE_MSG("Failed to read version"); | |
| 25 } | |
| 26 if (vhea->header.version != 0x00010000 && | |
| 27 vhea->header.version != 0x00011000) { | |
| 28 return OTS_FAILURE_MSG("Bad vhea version %x", vhea->header.version); | |
| 29 } | |
| 30 | |
| 31 if (!ParseMetricsHeader(file, &table, &vhea->header)) { | |
| 32 return OTS_FAILURE_MSG("Failed to parse metrics in vhea"); | |
| 33 } | |
| 34 | |
| 35 return true; | |
| 36 } | |
| 37 | |
| 38 bool ots_vhea_should_serialise(OpenTypeFile *file) { | |
| 39 // vhea should'nt serialise when vmtx doesn't exist. | |
| 40 // Firefox developer pointed out that vhea/vmtx should serialise iff GSUB is | |
| 41 // preserved. See http://crbug.com/77386 | |
| 42 return file->vhea != NULL && file->vmtx != NULL && | |
| 43 ots_gsub_should_serialise(file); | |
| 44 } | |
| 45 | |
| 46 bool ots_vhea_serialise(OTSStream *out, OpenTypeFile *file) { | |
| 47 if (!SerialiseMetricsHeader(file, out, &file->vhea->header)) { | |
| 48 return OTS_FAILURE_MSG("Failed to write vhea metrics"); | |
| 49 } | |
| 50 return true; | |
| 51 } | |
| 52 | |
| 53 void ots_vhea_free(OpenTypeFile *file) { | |
| 54 delete file->vhea; | |
| 55 } | |
| 56 | |
| 57 } // namespace ots | |
| 58 |
