1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/ots/src/vmtx.cc Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,54 @@
1.4 +// Copyright (c) 2011 The Chromium Authors. All rights reserved.
1.5 +// Use of this source code is governed by a BSD-style license that can be
1.6 +// found in the LICENSE file.
1.7 +
1.8 +#include "vmtx.h"
1.9 +
1.10 +#include "gsub.h"
1.11 +#include "maxp.h"
1.12 +#include "vhea.h"
1.13 +
1.14 +// vmtx - Vertical Metrics Table
1.15 +// http://www.microsoft.com/typography/otspec/vmtx.htm
1.16 +
1.17 +#define TABLE_NAME "vmtx"
1.18 +
1.19 +namespace ots {
1.20 +
1.21 +bool ots_vmtx_parse(OpenTypeFile *file, const uint8_t *data, size_t length) {
1.22 + Buffer table(data, length);
1.23 + OpenTypeVMTX *vmtx = new OpenTypeVMTX;
1.24 + file->vmtx = vmtx;
1.25 +
1.26 + if (!file->vhea || !file->maxp) {
1.27 + return OTS_FAILURE_MSG("vhea or maxp table missing as needed by vmtx");
1.28 + }
1.29 +
1.30 + if (!ParseMetricsTable(file, &table, file->maxp->num_glyphs,
1.31 + &file->vhea->header, &vmtx->metrics)) {
1.32 + return OTS_FAILURE_MSG("Failed to parse vmtx metrics");
1.33 + }
1.34 +
1.35 + return true;
1.36 +}
1.37 +
1.38 +bool ots_vmtx_should_serialise(OpenTypeFile *file) {
1.39 + // vmtx should serialise when vhea and GSUB are preserved.
1.40 + // See the comment in ots_vhea_should_serialise().
1.41 + return file->vmtx != NULL && file->vhea != NULL &&
1.42 + ots_gsub_should_serialise(file);
1.43 +}
1.44 +
1.45 +bool ots_vmtx_serialise(OTSStream *out, OpenTypeFile *file) {
1.46 + if (!SerialiseMetricsTable(file, out, &file->vmtx->metrics)) {
1.47 + return OTS_FAILURE_MSG("Failed to write vmtx metrics");
1.48 + }
1.49 + return true;
1.50 +}
1.51 +
1.52 +void ots_vmtx_free(OpenTypeFile *file) {
1.53 + delete file->vmtx;
1.54 +}
1.55 +
1.56 +} // namespace ots
1.57 +
