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 FontCacheHandler::FontCacheHandler() {
  14 }
  15
  16 FontCacheHandler::~FontCacheHandler() {
  17 }
  18
  19 bool FontCacheHandler::OnMessageReceived(const IPC::Message& message) {
  20   bool handled = true;
  21   IPC_BEGIN_MESSAGE_MAP(FontCacheHandler, message)
  22     IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_BuildDirectWriteFontCache,
  23                         OnBuildFontCache)
  24     IPC_MESSAGE_UNHANDLED(handled = false)
  25   IPC_END_MESSAGE_MAP()
  26   return handled;
  27 }
  28
  29 void FontCacheHandler::OnBuildFontCache(const base::FilePath& full_path) {
  30   DCHECK(!cache_thread_);
  31
  32   utility_task_runner_ = base::MessageLoop::current()->task_runner();
  33
  34   // Create worker thread for building font cache.
  35   cache_thread_.reset(new base::Thread("font_cache_thread"));
  36   if (!cache_thread_->Start()) {
  37     NOTREACHED();
  38     return;
  39   }
  40   cache_thread_->message_loop()->PostTask(
  41       FROM_HERE, base::Bind(&FontCacheHandler::StartBuildingFontCache,
  42                             base::Unretained(this),
  43                             full_path));
  44 }
  45
  46 void FontCacheHandler::StartBuildingFontCache(const base::FilePath& full_path) {
  47   content::BuildFontCache(full_path);
  48   utility_task_runner_->PostTask(FROM_HERE,
  49                                  base::Bind(&FontCacheHandler::Cleanup,
  50                                             base::Unretained(this)));
  51 }
  52
  53 void FontCacheHandler::Cleanup() {
  54   cache_thread_.reset();
  55   content::UtilityThread::Get()->ReleaseProcessIfNeeded();
  56 }