1 // Copyright (c) 2012 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 #ifndef CONTENT_COMMON_FONT_CACHE_DISPATCHER_WIN_H_ 6 #define CONTENT_COMMON_FONT_CACHE_DISPATCHER_WIN_H_ 7 8 #include <windows.h> 9 10 #include "base/basictypes.h" 11 #include "base/memory/singleton.h" 12 #include "ipc/ipc_channel_proxy.h" 13 14 namespace content { 15 16 // Dispatches messages used for font caching on Windows. This is needed because 17 // Windows can't load fonts into its kernel cache in sandboxed processes. So the 18 // sandboxed process asks the browser process to do this for it. 19 class FontCacheDispatcher : public IPC::ChannelProxy::MessageFilter, 20 public IPC::Sender { 21 public: 22 FontCacheDispatcher(); 23 virtual ~FontCacheDispatcher(); 24 25 // IPC::Sender implementation: 26 virtual bool Send(IPC::Message* message) OVERRIDE; 27 28 private: 29 // IPC::ChannelProxy::MessageFilter implementation: 30 virtual void OnFilterAdded(IPC::Channel* channel) OVERRIDE; 31 virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE; 32 virtual void OnChannelClosing() OVERRIDE; 33 34 // Message handlers. 35 void OnPreCacheFont(const LOGFONT& font); 36 void OnReleaseCachedFonts(); 37 38 IPC::Channel* channel_; 39 40 DISALLOW_COPY_AND_ASSIGN(FontCacheDispatcher); 41 }; 42 43 } // namespace content 44 45 #endif // CONTENT_COMMON_FONT_CACHE_DISPATCHER_WIN_H_ 46