Line data    Source code

       1             : // Copyright (c) 2011 The Chromium Authors. All rights reserved.
       2             : // Use of this source code is governed by a BSD-style license that can be
       3             : // found in the LICENSE file.
       4             : 
       5             : #include "vhea.h"
       6             : 
       7             : #include "head.h"
       8             : #include "maxp.h"
       9             : 
      10             : // vhea - Vertical Header Table
      11             : // http://www.microsoft.com/typography/otspec/vhea.htm
      12             : 
      13             : #define TABLE_NAME "vhea"
      14             : 
      15             : namespace ots {
      16             : 
      17           0 : bool ots_vhea_parse(Font *font, const uint8_t *data, size_t length) {
      18           0 :   Buffer table(data, length);
      19           0 :   OpenTypeVHEA *vhea = new OpenTypeVHEA;
      20           0 :   font->vhea = vhea;
      21             : 
      22           0 :   if (!table.ReadU32(&vhea->header.version)) {
      23           0 :     return OTS_FAILURE_MSG("Failed to read version");
      24             :   }
      25           0 :   if (vhea->header.version != 0x00010000 &&
      26           0 :       vhea->header.version != 0x00011000) {
      27           0 :     return OTS_FAILURE_MSG("Bad vhea version %x", vhea->header.version);
      28             :   }
      29             : 
      30           0 :   if (!ParseMetricsHeader(font, &table, &vhea->header)) {
      31           0 :     return OTS_FAILURE_MSG("Failed to parse metrics in vhea");
      32             :   }
      33             : 
      34           0 :   return true;
      35             : }
      36             : 
      37           0 : bool ots_vhea_should_serialise(Font *font) {
      38             :   // vhea should'nt serialise when vmtx doesn't exist.
      39           0 :   return font->vhea != NULL && font->vmtx != NULL;
      40             : }
      41             : 
      42           0 : bool ots_vhea_serialise(OTSStream *out, Font *font) {
      43           0 :   if (!SerialiseMetricsHeader(font, out, &font->vhea->header)) {
      44           0 :     return OTS_FAILURE_MSG("Failed to write vhea metrics");
      45             :   }
      46           0 :   return true;
      47             : }
      48             : 
      49           0 : void ots_vhea_reuse(Font *font, Font *other) {
      50           0 :   font->vhea = other->vhea;
      51           0 :   font->vhea_reused = true;
      52           0 : }
      53             : 
      54           0 : void ots_vhea_free(Font *font) {
      55           0 :   delete font->vhea;
      56           0 : }
      57             : 
      58             : }  // namespace ots
      59             : 
      60             : #undef TABLE_NAME