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// 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.
#include "vhea.h"
#include "gsub.h"
#include "head.h"
#include "maxp.h"
// vhea - Vertical Header Table
// http://www.microsoft.com/opentype/otspec/vhea.htm
namespace ots {
bool ots_vhea_parse(OpenTypeFile *file, const uint8_t *data, size_t length) {
Buffer table(data, length);
OpenTypeVHEA *vhea = new OpenTypeVHEA;
file->vhea = vhea;
if (!table.ReadU32(&vhea->header.version)) {
return OTS_FAILURE();
}
if (vhea->header.version != 0x00010000 &&
vhea->header.version != 0x00011000) {
return OTS_FAILURE();
}
if (!ParseMetricsHeader(file, &table, &vhea->header)) {
return OTS_FAILURE();
}
return true;
}
bool ots_vhea_should_serialise(OpenTypeFile *file) {
// vhea should'nt serialise when vmtx doesn't exist.
// Firefox developer pointed out that vhea/vmtx should serialise iff GSUB is
// preserved. See http://crbug.com/77386
return file->vhea != NULL && file->vmtx != NULL &&
ots_gsub_should_serialise(file);
}
bool ots_vhea_serialise(OTSStream *out, OpenTypeFile *file) {
if (!SerialiseMetricsHeader(out, &file->vhea->header)) {
return OTS_FAILURE();
}
return true;
}
void ots_vhea_free(OpenTypeFile *file) {
delete file->vhea;
}
} // namespace ots
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