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 "vmtx.h"
       6             : 
       7             : #include "maxp.h"
       8             : #include "vhea.h"
       9             : 
      10             : // vmtx - Vertical Metrics Table
      11             : // http://www.microsoft.com/typography/otspec/vmtx.htm
      12             : 
      13             : #define TABLE_NAME "vmtx"
      14             : 
      15             : namespace ots {
      16             : 
      17           0 : bool ots_vmtx_parse(Font *font, const uint8_t *data, size_t length) {
      18           0 :   Buffer table(data, length);
      19           0 :   OpenTypeVMTX *vmtx = new OpenTypeVMTX;
      20           0 :   font->vmtx = vmtx;
      21             : 
      22           0 :   if (!font->vhea || !font->maxp) {
      23           0 :     return OTS_FAILURE_MSG("vhea or maxp table missing as needed by vmtx");
      24             :   }
      25             : 
      26           0 :   if (!ParseMetricsTable(font, &table, font->maxp->num_glyphs,
      27           0 :                          &font->vhea->header, &vmtx->metrics)) {
      28           0 :     return OTS_FAILURE_MSG("Failed to parse vmtx metrics");
      29             :   }
      30             : 
      31           0 :   return true;
      32             : }
      33             : 
      34           0 : bool ots_vmtx_should_serialise(Font *font) {
      35             :   // vmtx should serialise when vhea is preserved.
      36           0 :   return font->vmtx != NULL && font->vhea != NULL;
      37             : }
      38             : 
      39           0 : bool ots_vmtx_serialise(OTSStream *out, Font *font) {
      40           0 :   if (!SerialiseMetricsTable(font, out, &font->vmtx->metrics)) {
      41           0 :     return OTS_FAILURE_MSG("Failed to write vmtx metrics");
      42             :   }
      43           0 :   return true;
      44             : }
      45             : 
      46           0 : void ots_vmtx_reuse(Font *font, Font *other) {
      47           0 :   font->vmtx = other->vmtx;
      48           0 :   font->vmtx_reused = true;
      49           0 : }
      50             : 
      51           0 : void ots_vmtx_free(Font *font) {
      52           0 :   delete font->vmtx;
      53           0 : }
      54             : 
      55             : }  // namespace ots
      56             : 
      57             : #undef TABLE_NAME