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| 538 | mauro | 1 | /* |
| 2 | * Project: S.Ha.R.K. |
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| 3 | * |
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| 4 | * Coordinators: |
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| 5 | * Giorgio Buttazzo <giorgio@sssup.it> |
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| 6 | * Paolo Gai <pj@gandalf.sssup.it> |
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| 7 | * |
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| 8 | * Authors : |
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| 9 | * Paolo Gai <pj@gandalf.sssup.it> |
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| 10 | * Massimiliano Giorgi <massy@gandalf.sssup.it> |
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| 11 | * Luca Abeni <luca@gandalf.sssup.it> |
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| 12 | * Mauro Marinoni <mauro.marinoni@unipv.it> |
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| 13 | * (see the web pages for full authors list) |
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| 14 | * |
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| 15 | * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy) |
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| 16 | * |
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| 17 | * http://www.sssup.it |
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| 18 | * http://retis.sssup.it |
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| 19 | * http://shark.sssup.it |
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| 20 | */ |
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| 21 | |||
| 22 | /* |
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| 23 | * Copyright (C) 2000 Paolo Gai |
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| 24 | * |
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| 25 | * This program is free software; you can redistribute it and/or modify |
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| 26 | * it under the terms of the GNU General Public License as published by |
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| 27 | * the Free Software Foundation; either version 2 of the License, or |
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| 28 | * (at your option) any later version. |
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| 29 | * |
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| 30 | * This program is distributed in the hope that it will be useful, |
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| 31 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 32 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 33 | * GNU General Public License for more details. |
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| 34 | * |
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| 35 | * You should have received a copy of the GNU General Public License |
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| 36 | * along with this program; if not, write to the Free Software |
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| 37 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 38 | * |
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| 39 | */ |
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| 40 | |||
| 41 | /* |
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| 42 | * |
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| 43 | * Auto Pointer management |
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| 44 | * |
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| 45 | */ |
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| 46 | |||
| 47 | #include <kernel/kern.h> |
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| 48 | #include <modules/sem.h> |
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| 49 | |||
| 50 | #include "../include/drivers/shark_input26.h" |
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| 51 | #include "../include/drivers/shark_mouse26.h" |
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| 52 | |||
| 53 | //#define CURTXT_DEBUG |
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| 54 | |||
| 55 | /* these variables are managed by this module but MUST be declared |
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| 56 | * into shark_mouse.c to prevent implicit inclusion of this module |
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| 57 | * when a user link the mouse library |
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| 58 | */ |
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| 59 | extern MOUSE_HANDLER show_mouse_handler; |
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| 60 | extern MOUSE_HANDLER user_mouse_handler; |
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| 61 | |||
| 62 | /* a mutex semaphore */ |
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| 63 | static sem_t mutex=-1; |
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| 64 | |||
| 65 | /* Setup function */ |
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| 66 | int _mouse_cursor_init(int cmd, void(*my_show_cursor)(int, int), void(*my_restore_cursor)(int, int)); |
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| 67 | |||
| 68 | /* |
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| 69 | * |
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| 70 | * autocursor mouse handler |
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| 71 | * |
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| 72 | */ |
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| 73 | |||
| 74 | /* >=0 hide cursor; <0 show cursor */ |
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| 75 | static int mouse_cursor_state = 0; |
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| 76 | |||
| 77 | /* mouse status */ |
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| 78 | static int autocursormode = 0; |
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| 79 | |||
| 80 | /* saved mouse_position */ |
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| 81 | static int saved_x, saved_y; |
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| 82 | |||
| 83 | static void dummy(int x,int y){} |
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| 84 | |||
| 85 | static void (*show_cursor)(int x, int y) = dummy; |
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| 86 | static void (*restore_cursor)(int x, int y) = dummy; |
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| 87 | |||
| 88 | /* those are the 4 mouse handlers */ |
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| 89 | /* AUTOOFF -> call the user handler with no mouse displayed */ |
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| 90 | /* WITHOUTSEM -> does not use a mutex semaphore */ |
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| 91 | |||
| 92 | /* with no flags */ |
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| 93 | static void autocursor_mouse_handler_1(MOUSE_EVT *event) |
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| 94 | { |
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| 95 | #ifdef CURTXT_DEBUG |
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| 96 | printk(KERN_DEBUG "mcurtxt.c: autocursor_mouse_handler_1\n"); |
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| 97 | #endif |
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| 98 | |||
| 99 | if (user_mouse_handler != NULL) |
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| 100 | user_mouse_handler(event); |
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| 101 | |||
| 102 | sem_wait(&mutex); |
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| 103 | if ( (mouse_cursor_state < 0) && (event->x != saved_x || event->y != saved_y)) { |
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| 104 | restore_cursor(saved_x, saved_y); |
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| 105 | saved_x = event->x; |
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| 106 | saved_y = event->y; |
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| 107 | show_cursor(saved_x, saved_y); |
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| 108 | } |
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| 109 | sem_post(&mutex); |
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| 110 | } |
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| 111 | |||
| 112 | /* with WITHOUTSEM flag*/ |
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| 113 | static void autocursor_mouse_handler_2(MOUSE_EVT *event) |
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| 114 | { |
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| 115 | #ifdef CURTXT_DEBUG |
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| 116 | printk(KERN_DEBUG "mcurtxt.c: autocursor_mouse_handler_2\n"); |
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| 117 | #endif |
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| 118 | if (user_mouse_handler != NULL) |
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| 119 | user_mouse_handler(event); |
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| 120 | |||
| 121 | if ( (mouse_cursor_state < 0) && (event->x != saved_x || event->y != saved_y)) { |
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| 122 | restore_cursor(saved_x, saved_y); |
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| 123 | saved_x = event->x; |
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| 124 | saved_y = event->y; |
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| 125 | show_cursor(saved_x, saved_y); |
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| 126 | } |
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| 127 | } |
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| 128 | |||
| 129 | /* with AUTOOFF flag*/ |
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| 130 | static void autocursor_mouse_handler_3(MOUSE_EVT *event) |
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| 131 | { |
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| 132 | #ifdef CURTXT_DEBUG |
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| 133 | printk(KERN_DEBUG "mcurtxt.c: autocursor_mouse_handler_3\n"); |
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| 134 | #endif |
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| 135 | sem_wait(&mutex); |
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| 136 | |||
| 137 | if (mouse_cursor_state < 0) { |
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| 138 | restore_cursor(saved_x, saved_y); |
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| 139 | saved_x = event->x; |
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| 140 | saved_y = event->y; |
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| 141 | if (user_mouse_handler != NULL) |
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| 142 | user_mouse_handler(event); |
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| 143 | show_cursor(saved_x, saved_y); |
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| 144 | } else if (user_mouse_handler != NULL) |
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| 145 | user_mouse_handler(event); |
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| 146 | |||
| 147 | sem_post(&mutex); |
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| 148 | } |
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| 149 | |||
| 150 | /* with WITHOUTSEM & AUTOOFF flags */ |
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| 151 | static void autocursor_mouse_handler_4(MOUSE_EVT *event) |
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| 152 | { |
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| 153 | #ifdef CURTXT_DEBUG |
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| 154 | printk(KERN_DEBUG "mcurtxt.c: autocursor_mouse_handler_4\n"); |
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| 155 | #endif |
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| 156 | if (mouse_cursor_state < 0) { |
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| 157 | restore_cursor(saved_x, saved_y); |
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| 158 | saved_x = event->x; |
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| 159 | saved_y = event->y; |
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| 160 | if (user_mouse_handler != NULL) |
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| 161 | user_mouse_handler(event); |
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| 162 | show_cursor(saved_x, saved_y); |
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| 163 | } else if (user_mouse_handler != NULL) |
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| 164 | user_mouse_handler(event); |
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| 165 | } |
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| 166 | |||
| 167 | /* -------------- |
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| 168 | * TXT management |
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| 169 | * -------------- |
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| 170 | */ |
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| 171 | |||
| 172 | /* text cursor shape */ |
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| 173 | #define DEFAULTTXTSHAPE 0x7700ffff |
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| 174 | static DWORD saved_txtshape = DEFAULTTXTSHAPE; |
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| 175 | static BYTE attr_andmask, attr_xormask; |
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| 176 | static BYTE c_andmask, c_xormask; |
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| 177 | |||
| 178 | /* saved values */ |
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| 179 | static BYTE saved_attr, saved_c; |
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| 180 | |||
| 181 | /* show txt cursor */ |
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| 182 | void show_txt_cursor(int x, int y) |
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| 183 | { |
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| 184 | int attr,c; |
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| 185 | |||
| 186 | getc_xy(x, y, &saved_attr, &saved_c); |
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| 187 | attr = (saved_attr & attr_andmask) ^ attr_xormask; |
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| 188 | c = (saved_c & c_andmask) ^ c_xormask; |
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| 189 | putc_xy(x, y, attr, c); |
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| 190 | } |
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| 191 | |||
| 192 | /* restore txt cursor */ |
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| 193 | static void restore_txt_cursor(int x, int y) |
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| 194 | { |
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| 195 | putc_xy(x, y, saved_attr, saved_c); |
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| 196 | } |
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| 197 | |||
| 198 | /* define text shape */ |
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| 199 | int mouse_txtshape(DWORD img) |
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| 200 | { |
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| 201 | int cond; |
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| 202 | |||
| 203 | if (img == DEFAULT) |
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| 204 | img = DEFAULTTXTSHAPE; |
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| 205 | |||
| 206 | cond = ( (autocursormode & STATUSMASK) == ENABLE && (autocursormode & TXTCURSOR) == TXTCURSOR ); |
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| 207 | |||
| 208 | if (cond) |
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| 209 | restore_txt_cursor(saved_x, saved_y); |
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| 210 | |||
| 211 | saved_txtshape = img; |
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| 212 | c_andmask = img & 0xff; |
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| 213 | attr_andmask = (img & 0xff00) >> 8; |
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| 214 | c_xormask = (img & 0xff0000) >> 16; |
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| 215 | attr_xormask = (img & 0xff000000) >> 24; |
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| 216 | |||
| 217 | #ifdef CURTXT_DEBUG |
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| 218 | printk(KERN_DEBUG "MouseTxt_Shape: %x %x %x %x\n", c_andmask, attr_andmask, c_xormask, attr_xormask); |
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| 219 | #endif |
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| 220 | if (cond) |
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| 221 | show_txt_cursor(saved_x, saved_y); |
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| 222 | |||
| 223 | return 0; |
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| 224 | } |
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| 225 | |||
| 226 | /* |
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| 227 | * User interface to autocursor functions |
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| 228 | */ |
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| 229 | |||
| 230 | /* display the cursor */ |
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| 231 | #define MOUSE_ON() { \ |
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| 232 | int unused; \ |
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| 233 | unsigned long lunused; \ |
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| 234 | mouse_cursor_state--; \ |
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| 235 | if (mouse_cursor_state == -1) { \ |
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| 236 | mouse_getpos(&saved_x, &saved_y, &unused, &lunused); \ |
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| 237 | show_cursor(saved_x, saved_y); \ |
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| 238 | } \ |
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| 239 | } |
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| 240 | |||
| 241 | static void mouse_on_sem(void) |
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| 242 | { |
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| 243 | sem_wait(&mutex); |
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| 244 | MOUSE_ON(); |
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| 245 | sem_post(&mutex); |
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| 246 | } |
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| 247 | |||
| 248 | static void mouse_on_nosem(void) |
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| 249 | { |
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| 250 | MOUSE_ON(); |
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| 251 | } |
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| 252 | |||
| 253 | void (*mouse_on)(void)=mouse_on_nosem; |
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| 254 | |||
| 255 | /* hide the cursor */ |
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| 256 | #define MOUSE_OFF() { \ |
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| 257 | mouse_cursor_state++; \ |
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| 258 | if (mouse_cursor_state == 0) \ |
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| 259 | restore_cursor(saved_x, saved_y); \ |
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| 260 | } |
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| 261 | |||
| 262 | void mouse_off_sem(void) |
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| 263 | { |
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| 264 | sem_wait(&mutex); |
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| 265 | MOUSE_OFF(); |
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| 266 | sem_post(&mutex); |
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| 267 | } |
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| 268 | |||
| 269 | void mouse_off_nosem(void) |
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| 270 | { |
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| 271 | MOUSE_OFF(); |
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| 272 | } |
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| 273 | |||
| 274 | void (*mouse_off)(void) = mouse_off_nosem; |
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| 275 | |||
| 276 | static MOUSE_HANDLER wich_handler(int cmd) |
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| 277 | { |
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| 278 | if ( ((cmd & WITHOUTSEM) == WITHOUTSEM) && ((cmd & AUTOOFF) == AUTOOFF) ) |
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| 279 | return autocursor_mouse_handler_4; |
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| 280 | if ((cmd & WITHOUTSEM) == WITHOUTSEM) |
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| 281 | return autocursor_mouse_handler_2; |
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| 282 | if ((cmd & AUTOOFF) == AUTOOFF) |
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| 283 | return autocursor_mouse_handler_3; |
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| 284 | return autocursor_mouse_handler_1; |
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| 285 | } |
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| 286 | |||
| 287 | int mouse_txtcursor(int cmd) |
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| 288 | { |
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| 289 | mouse_txtshape(saved_txtshape); |
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| 290 | return _mouse_cursor_init(cmd|TXTCURSOR, show_txt_cursor, restore_txt_cursor); |
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| 291 | } |
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| 292 | |||
| 293 | /* Generic functions, both for text & graphics mode */ |
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| 294 | |||
| 295 | int _mouse_cursor_init(int cmd, void(*my_show_cursor)(int, int), void(*my_restore_cursor)(int, int)) |
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| 296 | { |
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| 297 | if (mutex == -1) { |
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| 298 | if (sem_init(&mutex, 0, 1) == -1) |
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| 299 | return -1; |
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| 300 | } |
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| 301 | |||
| 302 | #ifdef CURTXT_DEBUG |
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| 303 | printk(KERN_DEBUG "mouse_cursor_init: command %x\n", cmd); |
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| 304 | #endif |
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| 305 | |||
| 306 | switch (cmd & STATUSMASK) { |
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| 307 | case DISABLE: |
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| 308 | //show_mouse_handler = user_mouse_handler; |
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| 309 | show_mouse_handler = NULL; |
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| 310 | restore_cursor(saved_x, saved_y); |
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| 311 | show_cursor = dummy; |
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| 312 | restore_cursor = dummy; |
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| 313 | mouse_cursor_state = 0; |
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| 314 | break; |
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| 315 | case ENABLE: |
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| 316 | restore_cursor(saved_x, saved_y); |
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| 317 | restore_cursor = my_restore_cursor; |
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| 318 | show_cursor = my_show_cursor; |
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| 319 | if ((autocursormode & STATUSMASK) == DISABLE) { |
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| 320 | //user_mouse_handler = show_mouse_handler; |
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| 321 | show_mouse_handler = wich_handler(cmd); |
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| 322 | } |
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| 323 | mouse_cursor_state = -1; |
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| 324 | break; |
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| 325 | default: |
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| 326 | return -1; |
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| 327 | } |
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| 328 | |||
| 329 | autocursormode = cmd; |
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| 330 | |||
| 331 | if ((autocursormode & STATUSMASK) == ENABLE) { |
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| 332 | if ((cmd & WITHOUTSEM) == WITHOUTSEM) { |
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| 333 | mouse_on = mouse_on_nosem; |
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| 334 | mouse_off = mouse_off_nosem; |
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| 335 | } else { |
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| 336 | mouse_on = mouse_on_sem; |
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| 337 | mouse_off = mouse_off_sem; |
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| 338 | } |
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| 339 | } |
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| 340 | |||
| 341 | return 0; |
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| 342 | } |
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| 343 | |||
| 344 | void _mouse_cursor_getposition(int *xptr, int *yptr) |
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| 345 | { |
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| 346 | *xptr = saved_x; |
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| 347 | *yptr = saved_y; |
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| 348 | } |