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// Copyright (C) 2011, Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
// DAMAGE.
#ifndef WebGamepads_h
#define WebGamepads_h
#include "WebGamepad.h"
#if BLINK_IMPLEMENTATION
#include "wtf/Assertions.h"
#endif
namespace blink {
#pragma pack(push, 1)
// This structure is intentionally POD and fixed size so that it can be stored
// in shared memory between hardware polling threads and the rest of the
// browser.
class WebGamepads {
public:
WebGamepads()
: length(0) { }
static const size_t itemsLengthCap = 4;
// Number of valid entries in the items array.
unsigned length;
// Gamepad data for N separate gamepad devices.
WebGamepad items[itemsLengthCap];
};
#if BLINK_IMPLEMENTATION
COMPILE_ASSERT(sizeof(WebGamepads) == 1864, WebGamepads_has_wrong_size);
#endif
#pragma pack(pop)
}
#endif // WebGamepads_h
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