chrome/utility/font_cache_handler_win.cc

   1 // Copyright 2014 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 "chrome/utility/font_cache_handler_win.h"
   6
   7 #include "base/task_runner_util.h"
   8 #include "base/threading/thread.h"
   9 #include "chrome/common/chrome_utility_messages.h"
  10 #include "content/public/common/dwrite_font_platform_win.h"
  11 #include "content/public/utility/utility_thread.h"
  12
  13 bool FontCacheHandler::OnMessageReceived(const IPC::Message& message) {
  14   bool handled = true;
  15   IPC_BEGIN_MESSAGE_MAP(FontCacheHandler, message)
  16     IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_BuildDirectWriteFontCache,
  17                         OnBuildFontCache)
  18     IPC_MESSAGE_UNHANDLED(handled = false)
  19   IPC_END_MESSAGE_MAP()
  20   return handled;
  21 }
  22
  23 void FontCacheHandler::OnBuildFontCache(const base::FilePath& full_path) {
  24   DCHECK(!cache_thread_);
  25
  26   utility_task_runner_ = base::MessageLoop::current()->message_loop_proxy();
  27
  28   // Create worker thread for building font cache.
  29   cache_thread_.reset(new base::Thread("font_cache_thread"));
  30   if (!cache_thread_->Start()) {
  31     NOTREACHED();
  32     return;
  33   }
  34   cache_thread_->message_loop()->PostTask(
  35       FROM_HERE, base::Bind(&FontCacheHandler::StartBuildingFontCache,
  36                             base::Unretained(this),
  37                             full_path));
  38 }
  39
  40 void FontCacheHandler::StartBuildingFontCache(const base::FilePath& full_path) {
  41   content::BuildFontCache(full_path);
  42   utility_task_runner_->PostTask(FROM_HERE,
  43                                  base::Bind(&FontCacheHandler::Cleanup,
  44                                             base::Unretained(this)));
  45 }
  46
  47 void FontCacheHandler::Cleanup() {
  48   cache_thread_.reset();
  49   content::UtilityThread::Get()->ReleaseProcessIfNeeded();
  50 }