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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 "vmtx.h"
#include "maxp.h"
#include "vhea.h"
// vmtx - Vertical Metrics Table
// http://www.microsoft.com/typography/otspec/vmtx.htm
#define TABLE_NAME "vmtx"
namespace ots {
bool ots_vmtx_parse(Font *font, const uint8_t *data, size_t length) {
Buffer table(data, length);
OpenTypeVMTX *vmtx = new OpenTypeVMTX;
font->vmtx = vmtx;
if (!font->vhea || !font->maxp) {
return OTS_FAILURE_MSG("vhea or maxp table missing as needed by vmtx");
}
if (!ParseMetricsTable(font, &table, font->maxp->num_glyphs,
&font->vhea->header, &vmtx->metrics)) {
return OTS_FAILURE_MSG("Failed to parse vmtx metrics");
}
return true;
}
bool ots_vmtx_should_serialise(Font *font) {
// vmtx should serialise when vhea is preserved.
return font->vmtx != NULL && font->vhea != NULL;
}
bool ots_vmtx_serialise(OTSStream *out, Font *font) {
if (!SerialiseMetricsTable(font, out, &font->vmtx->metrics)) {
return OTS_FAILURE_MSG("Failed to write vmtx metrics");
}
return true;
}
void ots_vmtx_reuse(Font *font, Font *other) {
font->vmtx = other->vmtx;
font->vmtx_reused = true;
}
void ots_vmtx_free(Font *font) {
delete font->vmtx;
}
} // namespace ots
#undef TABLE_NAME
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