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 "vmtx.h"
6
7 #include "gsub.h"
8 #include "maxp.h"
9 #include "vhea.h"
10
11 // vmtx - Vertical Metrics Table
12 // http://www.microsoft.com/opentype/otspec/vmtx.htm
13
14 namespace ots {
15
ots_vmtx_parse(OpenTypeFile * file,const uint8_t * data,size_t length)16 bool ots_vmtx_parse(OpenTypeFile *file, const uint8_t *data, size_t length) {
17 Buffer table(data, length);
18 OpenTypeVMTX *vmtx = new OpenTypeVMTX;
19 file->vmtx = vmtx;
20
21 if (!file->vhea || !file->maxp) {
22 return OTS_FAILURE();
23 }
24
25 if (!ParseMetricsTable(&table, file->maxp->num_glyphs,
26 &file->vhea->header, &vmtx->metrics)) {
27 return OTS_FAILURE();
28 }
29
30 return true;
31 }
32
ots_vmtx_should_serialise(OpenTypeFile * file)33 bool ots_vmtx_should_serialise(OpenTypeFile *file) {
34 // vmtx should serialise when vhea and GSUB are preserved.
35 // See the comment in ots_vhea_should_serialise().
36 return file->vmtx != NULL && file->vhea != NULL &&
37 ots_gsub_should_serialise(file);
38 }
39
ots_vmtx_serialise(OTSStream * out,OpenTypeFile * file)40 bool ots_vmtx_serialise(OTSStream *out, OpenTypeFile *file) {
41 if (!SerialiseMetricsTable(out, &file->vmtx->metrics)) {
42 return OTS_FAILURE();
43 }
44 return true;
45 }
46
ots_vmtx_free(OpenTypeFile * file)47 void ots_vmtx_free(OpenTypeFile *file) {
48 delete file->vmtx;
49 }
50
51 } // namespace ots
52
53