| // 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 |
| |