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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 | |
3 // found in the LICENSE file. | |
4 | |
5 #include "hmtx.h" | |
6 | |
7 #include "hhea.h" | |
8 #include "maxp.h" | |
9 | |
10 // hmtx - Horizontal Metrics | |
11 // http://www.microsoft.com/typography/otspec/hmtx.htm | |
12 | |
13 #define TABLE_NAME "hmtx" | |
14 | |
15 namespace ots { | |
16 | |
17 bool ots_hmtx_parse(OpenTypeFile *file, const uint8_t *data, size_t length) { | |
18 Buffer table(data, length); | |
19 OpenTypeHMTX *hmtx = new OpenTypeHMTX; | |
20 file->hmtx = hmtx; | |
21 | |
22 if (!file->hhea || !file->maxp) { | |
23 return OTS_FAILURE_MSG("Missing hhea or maxp tables in font, needed by hmtx"
); | |
24 } | |
25 | |
26 if (!ParseMetricsTable(file, &table, file->maxp->num_glyphs, | |
27 &file->hhea->header, &hmtx->metrics)) { | |
28 return OTS_FAILURE_MSG("Failed to parse hmtx metrics"); | |
29 } | |
30 | |
31 return true; | |
32 } | |
33 | |
34 bool ots_hmtx_should_serialise(OpenTypeFile *file) { | |
35 return file->hmtx != NULL; | |
36 } | |
37 | |
38 bool ots_hmtx_serialise(OTSStream *out, OpenTypeFile *file) { | |
39 if (!SerialiseMetricsTable(file, out, &file->hmtx->metrics)) { | |
40 return OTS_FAILURE_MSG("Failed to serialise htmx metrics"); | |
41 } | |
42 return true; | |
43 } | |
44 | |
45 void ots_hmtx_free(OpenTypeFile *file) { | |
46 delete file->hmtx; | |
47 } | |
48 | |
49 } // namespace ots | |
50 | |
51 #undef TABLE_NAME | |
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