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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 "head.h"
#include "maxp.h"
// vhea - Vertical Header Table
// http://www.microsoft.com/typography/otspec/vhea.htm
#define TABLE_NAME "vhea"
namespace ots {
bool ots_vhea_parse(Font *font, const uint8_t *data, size_t length) {
Buffer table(data, length);
OpenTypeVHEA *vhea = new OpenTypeVHEA;
font->vhea = vhea;
if (!table.ReadU32(&vhea->header.version)) {
return OTS_FAILURE_MSG("Failed to read version");
}
if (vhea->header.version != 0x00010000 &&
vhea->header.version != 0x00011000) {
return OTS_FAILURE_MSG("Bad vhea version %x", vhea->header.version);
}
if (!ParseMetricsHeader(font, &table, &vhea->header)) {
return OTS_FAILURE_MSG("Failed to parse metrics in vhea");
}
return true;
}
bool ots_vhea_should_serialise(Font *font) {
// vhea should'nt serialise when vmtx doesn't exist.
return font->vhea != NULL && font->vmtx != NULL;
}
bool ots_vhea_serialise(OTSStream *out, Font *font) {
if (!SerialiseMetricsHeader(font, out, &font->vhea->header)) {
return OTS_FAILURE_MSG("Failed to write vhea metrics");
}
return true;
}
void ots_vhea_reuse(Font *font, Font *other) {
font->vhea = other->vhea;
font->vhea_reused = true;
}
void ots_vhea_free(Font *font) {
delete font->vhea;
}
} // namespace ots
#undef TABLE_NAME
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