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Annotation of driverkit/libDriver/Kernel/IODisplay.m, revision 1.1.1.1

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: /*     Copyright (c) 1992 NeXT Computer, Inc.  All rights reserved. 
                     25:  *
                     26:  * IODisplay.m - Abstract superclass for all IODisplay objects.
                     27:  *
                     28:  *
                     29:  * HISTORY
                     30:  * 01 Sep 92   Joe Pasqua
                     31:  *      Created. 
                     32:  */
                     33: 
                     34: #define DRIVER_PRIVATE 1
                     35: #define KERNEL 1
                     36: 
                     37: #import <driverkit/driverTypes.h>
                     38: #import <driverkit/driverTypesPrivate.h>
                     39: #import <driverkit/kernelDriver.h>
                     40: #import        <driverkit/IODisplay.h>
                     41: #import <driverkit/IODisplayPrivate.h>
                     42: 
                     43: @implementation IODisplay
                     44: 
                     45: /* Allocate a console support info structure based on this display. This
                     46:  * structure, and the functions in it, are used to display alert and
                     47:  * console windows.
                     48:  */
                     49: - (IOConsoleInfo *)allocateConsoleInfo;
                     50: {
                     51:     return (IOConsoleInfo *)0;
                     52: }
                     53: 
                     54: - (port_t)devicePort
                     55: {
                     56:     return [[self deviceDescription] devicePort];
                     57: }
                     58: 
                     59: 
                     60: - hideCursor: (int)token;
                     61: {
                     62:     return self;
                     63: }
                     64: 
                     65: - moveCursor:(Point*)cursorLoc frame:(int)frame token:(int)t;
                     66: {
                     67:     return self;
                     68: }
                     69: 
                     70: - showCursor:(Point*)cursorLoc frame:(int)frame token:(int)t;
                     71: {
                     72:     return self;
                     73: }
                     74: 
                     75: - setBrightness:(int)level token:(int)t;
                     76: {
                     77:     return self;
                     78: }
                     79: 
                     80: /* Return a pointer to an IODisplayInfo describing the display.
                     81:  */
                     82: - (IODisplayInfo *)displayInfo;
                     83: {
                     84:     return &_display;
                     85: }
                     86: 
                     87: /* Return the registration token for this display.
                     88:  */
                     89: - (int)token;
                     90: {
                     91:     return _token;
                     92: }
                     93: 
                     94: /* Set the token for this display.
                     95:  */
                     96: - (void)setToken:(int)token;
                     97: {
                     98:     _token = token;
                     99: }
                    100: 
                    101: - (IOReturn)getIntValues:(unsigned int *)parameterArray
                    102:                forParameter:(IOParameterName)parameterName
                    103:                count:(unsigned int *)count
                    104: {
                    105:     unsigned maxCount;
                    106: 
                    107:     maxCount = *count;
                    108:     if (strcmp(parameterName, IO_GET_DISPLAY_PORT) == 0
                    109:        || strcmp(parameterName, "IO_Display_GetPort") == 0) {
                    110: 
                    111:         port_t kernPort, userPort;
                    112: 
                    113:        if (maxCount < IO_GET_DISPLAY_PORT_SIZE)
                    114:            return IO_R_INVALID_ARG;
                    115:        kernPort = [self devicePort];
                    116:        userPort = IOConvertPort(kernPort, IO_KernelIOTask, IO_CurrentTask);
                    117:        parameterArray[0] = (unsigned)userPort;
                    118:        *count = 1;
                    119:        return IO_R_SUCCESS;
                    120:     } else {
                    121:        return [super getIntValues:parameterArray 
                    122:            forParameter:parameterName
                    123:            count:count];
                    124:     }
                    125: }
                    126: 
                    127: - (IOReturn)getCharValues:(unsigned char *)parameterArray
                    128:        forParameter:(IOParameterName)parameterName
                    129:        count:(unsigned int *)count
                    130: {
                    131:     IOConfigTable *configTable;
                    132:     const char *value;
                    133:     unsigned int length;
                    134: 
                    135:     configTable = [[self deviceDescription] configTable];
                    136:     if (configTable != nil) {
                    137:        value = [configTable valueForStringKey:parameterName];
                    138:        if (value != 0) {
                    139:            length = strlen(value) + 1;
                    140:            if (length <= *count) {
                    141:                strcpy(parameterArray, value);
                    142:                *count = length;
                    143:                return IO_R_SUCCESS;
                    144:            }
                    145:        }
                    146:     }
                    147:     return [super getCharValues:parameterArray 
                    148:        forParameter:parameterName
                    149:        count:count];
                    150: }
                    151: @end

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