1 // Copyright (c) 2011 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_RENDERER_GAMEPAD_SHARED_MEMORY_READER_H_ 6 #define CONTENT_RENDERER_GAMEPAD_SHARED_MEMORY_READER_H_ 7 8 #include "base/memory/scoped_ptr.h" 9 #include "base/memory/shared_memory.h" 10 #include "content/common/gamepad_messages.h" 11 #include "content/public/renderer/render_process_observer.h" 12 #include "content/public/renderer/renderer_gamepad_provider.h" 13 #include "third_party/WebKit/public/platform/WebGamepads.h" 14 15 namespace content { 16 17 struct GamepadHardwareBuffer; 18 class RendererWebKitPlatformSupportImpl; 19 20 class GamepadSharedMemoryReader 21 : public RenderProcessObserver, 22 public RendererGamepadProvider { 23 public: 24 GamepadSharedMemoryReader( 25 RendererWebKitPlatformSupportImpl* webkit_platform_support); 26 virtual ~GamepadSharedMemoryReader(); 27 28 // RendererGamepadProvider implementation. 29 virtual void SampleGamepads( 30 blink::WebGamepads& gamepads) OVERRIDE; 31 virtual void SetGamepadListener( 32 blink::WebGamepadListener* listener) OVERRIDE; 33 34 // RenderProcessObserver implementation. 35 virtual bool OnControlMessageReceived(const IPC::Message& message) OVERRIDE; 36 37 private: 38 void OnGamepadConnected(int index, const blink::WebGamepad& gamepad); 39 void OnGamepadDisconnected(int index, const blink::WebGamepad& gamepad); 40 41 void StartPollingIfNecessary(); 42 void StopPollingIfNecessary(); 43 44 base::SharedMemoryHandle renderer_shared_memory_handle_; 45 scoped_ptr<base::SharedMemory> renderer_shared_memory_; 46 GamepadHardwareBuffer* gamepad_hardware_buffer_; 47 blink::WebGamepadListener* gamepad_listener_; 48 49 bool is_polling_; 50 bool ever_interacted_with_; 51 }; 52 53 } // namespace content 54 55 #endif // CONTENT_RENDERER_GAMEPAD_SHARED_MEMORY_READER_H_ 56