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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_RENDERER_GAMEPAD_SHARED_MEMORY_READER_H_
#define CONTENT_RENDERER_GAMEPAD_SHARED_MEMORY_READER_H_
#include "base/memory/scoped_ptr.h"
#include "base/memory/shared_memory.h"
#include "content/common/gamepad_messages.h"
#include "content/public/renderer/render_process_observer.h"
#include "third_party/WebKit/public/platform/WebGamepads.h"
namespace blink { class WebGamepadListener; }
namespace content {
struct GamepadHardwareBuffer;
class GamepadSharedMemoryReader : public RenderProcessObserver {
public:
GamepadSharedMemoryReader();
virtual ~GamepadSharedMemoryReader();
void SampleGamepads(blink::WebGamepads& gamepads);
void SetGamepadListener(blink::WebGamepadListener* listener);
// RenderProcessObserver implementation.
virtual bool OnControlMessageReceived(const IPC::Message& message) OVERRIDE;
private:
void OnGamepadConnected(int index, const blink::WebGamepad& gamepad);
void OnGamepadDisconnected(int index, const blink::WebGamepad& gamepad);
void StartPollingIfNecessary();
void StopPollingIfNecessary();
base::SharedMemoryHandle renderer_shared_memory_handle_;
scoped_ptr<base::SharedMemory> renderer_shared_memory_;
GamepadHardwareBuffer* gamepad_hardware_buffer_;
blink::WebGamepadListener* gamepad_listener_;
bool is_polling_;
bool ever_interacted_with_;
};
} // namespace content
#endif // CONTENT_RENDERER_GAMEPAD_SHARED_MEMORY_READER_H_
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