Add m-esr52 at 52.6.0

1 files changed, 58 insertions, 0 deletions

diff --git a/gfx/ots/src/hhea.cc b/gfx/ots/src/hhea.cc
new file mode 100644
index 000000000..624287280
--- /dev/null
+++ b/gfx/ots/src/hhea.cc
@@ -0,0 +1,58 @@
+// 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