michael@0: // Copyright (c) 2009 The Chromium Authors. All rights reserved.
michael@0: // Use of this source code is governed by a BSD-style license that can be
michael@0: // found in the LICENSE file.
michael@0: 
michael@0: #include "hmtx.h"
michael@0: 
michael@0: #include "hhea.h"
michael@0: #include "maxp.h"
michael@0: 
michael@0: // hmtx - Horizontal Metrics
michael@0: // http://www.microsoft.com/typography/otspec/hmtx.htm
michael@0: 
michael@0: #define TABLE_NAME "hmtx"
michael@0: 
michael@0: namespace ots {
michael@0: 
michael@0: bool ots_hmtx_parse(OpenTypeFile *file, const uint8_t *data, size_t length) {
michael@0:   Buffer table(data, length);
michael@0:   OpenTypeHMTX *hmtx = new OpenTypeHMTX;
michael@0:   file->hmtx = hmtx;
michael@0: 
michael@0:   if (!file->hhea || !file->maxp) {
michael@0:     return OTS_FAILURE_MSG("Missing hhea or maxp tables in font, needed by hmtx");
michael@0:   }
michael@0: 
michael@0:   if (!ParseMetricsTable(file, &table, file->maxp->num_glyphs,
michael@0:                          &file->hhea->header, &hmtx->metrics)) {
michael@0:     return OTS_FAILURE_MSG("Failed to parse hmtx metrics");
michael@0:   }
michael@0: 
michael@0:   return true;
michael@0: }
michael@0: 
michael@0: bool ots_hmtx_should_serialise(OpenTypeFile *file) {
michael@0:   return file->hmtx != NULL;
michael@0: }
michael@0: 
michael@0: bool ots_hmtx_serialise(OTSStream *out, OpenTypeFile *file) {
michael@0:   if (!SerialiseMetricsTable(file, out, &file->hmtx->metrics)) {
michael@0:     return OTS_FAILURE_MSG("Failed to serialise htmx metrics");
michael@0:   }
michael@0:   return true;
michael@0: }
michael@0: 
michael@0: void ots_hmtx_free(OpenTypeFile *file) {
michael@0:   delete file->hmtx;
michael@0: }
michael@0: 
michael@0: }  // namespace ots