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// Copyright (c) 2009 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 "hhea.h"
#include "head.h"
#include "maxp.h"
// hhea - Horizontal Header
// http://www.microsoft.com/typography/otspec/hhea.htm
#define TABLE_NAME "hhea"
namespace ots {
bool ots_hhea_parse(Font *font, const uint8_t *data, size_t length) {
Buffer table(data, length);
OpenTypeHHEA *hhea = new OpenTypeHHEA;
font->hhea = hhea;
if (!table.ReadU32(&hhea->header.version)) {
return OTS_FAILURE_MSG("Failed to read hhea version");
}
if (hhea->header.version >> 16 != 1) {
return OTS_FAILURE_MSG("Bad hhea version of %d", hhea->header.version);
}
if (!ParseMetricsHeader(font, &table, &hhea->header)) {
return OTS_FAILURE_MSG("Failed to parse horizontal metrics");
}
return true;
}
bool ots_hhea_should_serialise(Font *font) {
return font->hhea != NULL;
}
bool ots_hhea_serialise(OTSStream *out, Font *font) {
if (!SerialiseMetricsHeader(font, out, &font->hhea->header)) {
return OTS_FAILURE_MSG("Failed to serialise horizontal metrics");
}
return true;
}
void ots_hhea_reuse(Font *font, Font *other) {
font->hhea = other->hhea;
font->hhea_reused = true;
}
void ots_hhea_free(Font *font) {
delete font->hhea;
}
} // namespace ots
#undef TABLE_NAME
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