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Annotation of kernel/bsd/dev/ppc/PCPointer.m, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
        !             7:  * Reserved.  This file contains Original Code and/or Modifications of
        !             8:  * Original Code as defined in and that are subject to the Apple Public
        !             9:  * Source License Version 1.1 (the "License").  You may not use this file
        !            10:  * except in compliance with the License.  Please obtain a copy of the
        !            11:  * License at http://www.apple.com/publicsource and read it before using
        !            12:  * this file.
        !            13:  * 
        !            14:  * The Original Code and all software distributed under the License are
        !            15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            19:  * License for the specific language governing rights and limitations
        !            20:  * under the License.
        !            21:  * 
        !            22:  * @APPLE_LICENSE_HEADER_END@
        !            23:  */
        !            24: 
        !            25: /*     Copyright (c) 1992 NeXT Computer, Inc.  All rights reserved. 
        !            26:  *
        !            27:  * PCPointer.m - Generic PCPointer device class.
        !            28:  * 
        !            29:  *
        !            30:  * HISTORY
        !            31:  * 01-Dec-92   Joe Pasqua at NeXT
        !            32:  *      Created. 
        !            33:  */
        !            34:  
        !            35: // TO DO:
        !            36: //
        !            37: // Notes:
        !            38: // * To find things that need to be fixed, search for FIX, to find questions
        !            39: //   to be resolved, search for ASK, to find stuff that still needs to be
        !            40: //   done, search for TO DO.
        !            41: //
        !            42: 
        !            43: #define MACH_USER_API  1
        !            44: #undef KERNEL_PRIVATE
        !            45: 
        !            46: #import        <objc/Object.h>
        !            47: #import <driverkit/driverServer.h>
        !            48: #import <driverkit/generalFuncs.h>
        !            49: #import <bsd/dev/ppc/PCPointer.h>
        !            50: #import <bsd/dev/ppc/PCPointerDefs.h>
        !            51: 
        !            52: static id activePointerDevice;
        !            53: 
        !            54: @implementation PCPointer
        !            55: 
        !            56: - (int)getResolution
        !            57: {
        !            58:     // Subclasses must implement this method for proper operation
        !            59:     return 50; // This is a standard sort of value.
        !            60: }
        !            61: 
        !            62: - (BOOL)setEventTarget:eventTarget
        !            63: {
        !            64:     if ( [eventTarget conformsTo:@protocol(ADBPointerTarget)] )
        !            65:     {
        !            66:        target = eventTarget;
        !            67:        return TRUE;
        !            68:     }
        !            69:     else
        !            70:     {
        !            71:        IOLog( "PCPointer setEventTarget: new target [%s] does not "
        !            72:            "implement PCPointerTarget protocol.\n",
        !            73:            object_getClassName(eventTarget) );
        !            74:        return FALSE;
        !            75:     }
        !            76: }
        !            77: 
        !            78: PCPatoi(char *p)
        !            79: {
        !            80:        int n = 0;
        !            81:        int f = 0;
        !            82: 
        !            83:        for(;;p++) {
        !            84:                switch(*p) {
        !            85:                case ' ':
        !            86:                case '\t':
        !            87:                        continue;
        !            88:                case '-':
        !            89:                        f++;
        !            90:                case '+':
        !            91:                        p++;
        !            92:                }
        !            93:                break;
        !            94:        }
        !            95:        while(*p >= '0' && *p <= '9')
        !            96:                n = n*10 + *p++ - '0';
        !            97:        return(f? -n: n);
        !            98: }
        !            99: 
        !           100: - (BOOL)mouseInit:deviceDescription
        !           101: {
        !           102:     return NO;
        !           103: }
        !           104: 
        !           105: + (id) activePointerDevice
        !           106: {
        !           107:     return activePointerDevice;
        !           108: }
        !           109: 
        !           110: + (BOOL)probe:deviceDescription
        !           111: {
        !           112:     PCPointer *inst;
        !           113:     char nameBuf[20];
        !           114:     static IOObjectNumber nextUnit;    // Initial value is 0
        !           115: 
        !           116:     inst = [[self alloc] initFromDeviceDescription:deviceDescription];
        !           117:     inst->target = nil;        // No one is the target of mouse events yet
        !           118: 
        !           119:     // Initialize the specific rodent in question.
        !           120:     if ([inst mouseInit:deviceDescription] == NO) {
        !           121:        IOLog("PCPointer probe: mouseInit failure\n");
        !           122:        [inst free];
        !           123:        return NO;
        !           124:     }
        !           125:     else {
        !           126:        sprintf(nameBuf, "PPCPointer%d", nextUnit);
        !           127:        [inst setUnit:nextUnit++];
        !           128:        [inst setName:nameBuf];
        !           129:        // [self setDeviceKind:"SpecificType"]; was done by the subclass
        !           130:        [inst registerDevice];
        !           131:        activePointerDevice = inst;
        !           132:     }
        !           133:     
        !           134:     return YES;
        !           135: }
        !           136: @end

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