/* * Copyright (C) 2020 Apple 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. */ #include "config.h" #include "HIDElement.h" #if PLATFORM(MAC) #include "Logging.h" #include <IOKit/hid/IOHIDElement.h> #include <IOKit/hid/IOHIDValue.h> namespace WebCore { HIDElement::HIDElement(IOHIDElementRef element) : m_physicalMin(IOHIDElementGetPhysicalMin(element)) , m_physicalMax(IOHIDElementGetPhysicalMax(element)) , m_physicalValue(m_physicalMin) , m_usage(IOHIDElementGetUsage(element)) , m_usagePage(IOHIDElementGetUsagePage(element)) , m_cookie(IOHIDElementGetCookie(element)) , m_rawElement(element) { } void HIDElement::valueChanged(IOHIDValueRef value) { if (IOHIDValueGetElement(value) != m_rawElement.get()) { LOG(HID, "HIDElement: Changed value whose IOHIDElement %p doesn't match %p", IOHIDValueGetElement(value), m_rawElement.get()); return; } m_physicalValue = IOHIDValueGetScaledValue(value, kIOHIDValueScaleTypePhysical); } } // namespace WebCore #endif // PLATFORM(MAC)