The Tor Browser: gfx/ots/src/hmtx.cc@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 // Copyright (c) 2009 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.

     5 #include "hmtx.h"

     7 #include "hhea.h"

     8 #include "maxp.h"

    10 // hmtx - Horizontal Metrics

    11 // http://www.microsoft.com/typography/otspec/hmtx.htm

    13 #define TABLE_NAME "hmtx"

    15 namespace ots {

    17 bool ots_hmtx_parse(OpenTypeFile *file, const uint8_t *data, size_t length) {

    18   Buffer table(data, length);

    19   OpenTypeHMTX *hmtx = new OpenTypeHMTX;

    20   file->hmtx = hmtx;

    22   if (!file->hhea || !file->maxp) {

    23     return OTS_FAILURE_MSG("Missing hhea or maxp tables in font, needed by hmtx");

    24   }

    26   if (!ParseMetricsTable(file, &table, file->maxp->num_glyphs,

    27                          &file->hhea->header, &hmtx->metrics)) {

    28     return OTS_FAILURE_MSG("Failed to parse hmtx metrics");

    29   }

    31   return true;

    32 }

    34 bool ots_hmtx_should_serialise(OpenTypeFile *file) {

    35   return file->hmtx != NULL;

    36 }

    38 bool ots_hmtx_serialise(OTSStream *out, OpenTypeFile *file) {

    39   if (!SerialiseMetricsTable(file, out, &file->hmtx->metrics)) {

    40     return OTS_FAILURE_MSG("Failed to serialise htmx metrics");

    41   }

    42   return true;

    43 }

    45 void ots_hmtx_free(OpenTypeFile *file) {

    46   delete file->hmtx;

    47 }

    49 }  // namespace ots

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