iokit/Families/IOHIDSystem/IOHITabletPointer.cpp

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 #include <IOKit/hidsystem/IOHITabletPointer.h>
  23
  24 OSDefineMetaClassAndStructors(IOHITabletPointer, IOHIDevice)
  25
  26 UInt16 IOHITabletPointer::generateDeviceID()
  27 {
  28     static _nextDeviceID = 0;
  29     return _nextDeviceID++;
  30 }
  31
  32 bool IOHITabletPointer::init( OSDictionary *propTable )
  33 {
  34     if (!IOHIDevice::init(propTable)) {
  35         return false;
  36     }
  37
  38     _deviceID = generateDeviceID();
  39     setProperty(kIOHITabletPointerDeviceID, (unsigned long long)_deviceID, 16);
  40
  41     return true;
  42 }
  43
  44 bool IOService::attach( IOService * provider )
  45 {
  46     if (!IOHIDevice::attach(provider)) {
  47         return false;
  48     }
  49
  50     _tablet = OSDynamicCast(IOHITablet, provider);
  51
  52     return true;
  53 }
  54
  55 void IOHITabletPointer::dispatchTabletEvent(NXEventData *tabletEvent,
  56                                             AbsoluteTime ts)
  57 {
  58     if (_tablet) {
  59         _tablet->dispatchTabletEvent(tabletEvent, ts);
  60     }
  61 }
  62
  63 void IOHITabletPointer::dispatchProximityEvent(NXEventData *proximityEvent,
  64                                                AbsoluteTime ts)
  65 {
  66     if (_tablet) {
  67         _tablet->dispatchProximityEvent(proximityEvent, ts);
  68     }
  69 }