/* * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * The contents of this file constitute Original Code as defined in and * are subject to the Apple Public Source License Version 1.1 (the * "License"). You may not use this file except in compliance with the * License. Please obtain a copy of the License at * http://www.apple.com/publicsource and read it before using this file. * * This Original Code and all software distributed under the License are * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the * License for the specific language governing rights and limitations * under the License. * * @APPLE_LICENSE_HEADER_END@ */ /* File: HIDUsageInRange.c Contains: xxx put contents here xxx Version: xxx put version here xxx Copyright: © 1999 by Apple Computer, Inc., all rights reserved. File Ownership: DRI: xxx put dri here xxx Other Contact: xxx put other contact here xxx Technology: xxx put technology here xxx Writers: (BWS) Brent Schorsch Change History (most recent first): <USB1> 3/5/99 BWS first checked in */ #include "HIDLib.h" /* *------------------------------------------------------------------------------ * * HIDUsageInRange * * Input: * ptUsage - The usage/UsageRange Item * usagePage - The usagePage of the Item - or zero * usage - The usage of the Item * Output: * Returns: * true - usagePage/usage is in usage/UsageRange * false - usagePage/usage is not in usage/UsageRange * *------------------------------------------------------------------------------ */ Boolean HIDUsageInRange (HIDP_UsageItem *ptUsage, HIDUsage usagePage, HIDUsage usage) { /* * Disallow Null Pointers */ if (ptUsage == NULL) return false; /* * Check for the proper Page, 0 means don't care */ if ((usagePage != 0) && (ptUsage->usagePage != usagePage)) return false; /* * usage = 0 means don't care */ if (usage == 0) return true; /* * The requested usage must match or be in the range */ if (ptUsage->isRange) { if ((ptUsage->usageMinimum > usage) || (ptUsage->usageMaximum < usage)) return false; } else { if (ptUsage->usage != usage) return false; } return true; }