layout/style/FontPreloader.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
   5  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "FontPreloader.h"
   8
   9 #include "mozilla/FontLoaderUtils.h"
  10 #include "gfxPlatform.h"
  11
  12 namespace mozilla {
  13
  14 FontPreloader::FontPreloader()
  15     : FetchPreloader(nsIContentPolicy::TYPE_INTERNAL_FONT_PRELOAD) {}
  16
  17 nsresult FontPreloader::CreateChannel(
  18     nsIChannel** aChannel, nsIURI* aURI, const CORSMode aCORSMode,
  19     const dom::ReferrerPolicy& aReferrerPolicy, dom::Document* aDocument,
  20     nsILoadGroup* aLoadGroup, nsIInterfaceRequestor* aCallbacks,
  21     uint64_t aEarlyHintPreloaderId, int32_t aSupportsPriorityValue) {
  22   // Don't preload fonts if they've been preffed-off.
  23   if (!gfxPlatform::GetPlatform()->DownloadableFontsEnabled()) {
  24     return NS_ERROR_NOT_AVAILABLE;
  25   }
  26
  27   return FontLoaderUtils::BuildChannel(
  28       aChannel, aURI, aCORSMode, aReferrerPolicy, nullptr, nullptr, aDocument,
  29       aLoadGroup, aCallbacks, true, aSupportsPriorityValue);
  30 }
  31
  32 }  // namespace mozilla