Rev 538 | Rev 549 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 538 | mauro | 1 | /* |
| 2 | * Project: S.Ha.R.K. |
||
| 3 | * |
||
| 4 | * Coordinators: |
||
| 5 | * Giorgio Buttazzo <giorgio@sssup.it> |
||
| 6 | * Paolo Gai <pj@gandalf.sssup.it> |
||
| 7 | * |
||
| 8 | * Authors : |
||
| 9 | * Paolo Gai <pj@gandalf.sssup.it> |
||
| 10 | * Massimiliano Giorgi <massy@gandalf.sssup.it> |
||
| 11 | * Luca Abeni <luca@gandalf.sssup.it> |
||
| 12 | * Mauro Marinoni <mauro.marinoni@unipv.it> |
||
| 13 | * (see the web pages for full authors list) |
||
| 14 | * |
||
| 15 | * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy) |
||
| 16 | * |
||
| 17 | * http://www.sssup.it |
||
| 18 | * http://retis.sssup.it |
||
| 19 | * http://shark.sssup.it |
||
| 20 | */ |
||
| 21 | |||
| 22 | /* |
||
| 23 | * |
||
| 24 | * Auto Pointer management |
||
| 25 | * |
||
| 26 | */ |
||
| 27 | |||
| 28 | #include <kernel/kern.h> |
||
| 29 | #include <modules/sem.h> |
||
| 30 | |||
| 31 | #include "../include/drivers/shark_input26.h" |
||
| 32 | #include "../include/drivers/shark_mouse26.h" |
||
| 33 | |||
| 34 | //#define CURTXT_DEBUG |
||
| 35 | |||
| 36 | /* these variables are managed by this module but MUST be declared |
||
| 37 | * into shark_mouse.c to prevent implicit inclusion of this module |
||
| 38 | * when a user link the mouse library |
||
| 39 | */ |
||
| 40 | extern MOUSE_HANDLER show_mouse_handler; |
||
| 41 | extern MOUSE_HANDLER user_mouse_handler; |
||
| 42 | |||
| 43 | /* a mutex semaphore */ |
||
| 44 | static sem_t mutex=-1; |
||
| 45 | |||
| 46 | /* Setup function */ |
||
| 47 | int _mouse_cursor_init(int cmd, void(*my_show_cursor)(int, int), void(*my_restore_cursor)(int, int)); |
||
| 48 | |||
| 49 | /* |
||
| 50 | * |
||
| 51 | * autocursor mouse handler |
||
| 52 | * |
||
| 53 | */ |
||
| 54 | |||
| 55 | /* >=0 hide cursor; <0 show cursor */ |
||
| 56 | static int mouse_cursor_state = 0; |
||
| 57 | |||
| 58 | /* mouse status */ |
||
| 59 | static int autocursormode = 0; |
||
| 60 | |||
| 61 | /* saved mouse_position */ |
||
| 62 | static int saved_x, saved_y; |
||
| 63 | |||
| 64 | static void dummy(int x,int y){} |
||
| 65 | |||
| 66 | static void (*show_cursor)(int x, int y) = dummy; |
||
| 67 | static void (*restore_cursor)(int x, int y) = dummy; |
||
| 68 | |||
| 69 | /* those are the 4 mouse handlers */ |
||
| 70 | /* AUTOOFF -> call the user handler with no mouse displayed */ |
||
| 71 | /* WITHOUTSEM -> does not use a mutex semaphore */ |
||
| 72 | |||
| 73 | /* with no flags */ |
||
| 74 | static void autocursor_mouse_handler_1(MOUSE_EVT *event) |
||
| 75 | { |
||
| 76 | #ifdef CURTXT_DEBUG |
||
| 77 | printk(KERN_DEBUG "mcurtxt.c: autocursor_mouse_handler_1\n"); |
||
| 78 | #endif |
||
| 79 | |||
| 80 | if (user_mouse_handler != NULL) |
||
| 81 | user_mouse_handler(event); |
||
| 82 | |||
| 83 | sem_wait(&mutex); |
||
| 84 | if ( (mouse_cursor_state < 0) && (event->x != saved_x || event->y != saved_y)) { |
||
| 85 | restore_cursor(saved_x, saved_y); |
||
| 86 | saved_x = event->x; |
||
| 87 | saved_y = event->y; |
||
| 88 | show_cursor(saved_x, saved_y); |
||
| 89 | } |
||
| 90 | sem_post(&mutex); |
||
| 91 | } |
||
| 92 | |||
| 93 | /* with WITHOUTSEM flag*/ |
||
| 94 | static void autocursor_mouse_handler_2(MOUSE_EVT *event) |
||
| 95 | { |
||
| 96 | #ifdef CURTXT_DEBUG |
||
| 97 | printk(KERN_DEBUG "mcurtxt.c: autocursor_mouse_handler_2\n"); |
||
| 98 | #endif |
||
| 99 | if (user_mouse_handler != NULL) |
||
| 100 | user_mouse_handler(event); |
||
| 101 | |||
| 102 | if ( (mouse_cursor_state < 0) && (event->x != saved_x || event->y != saved_y)) { |
||
| 103 | restore_cursor(saved_x, saved_y); |
||
| 104 | saved_x = event->x; |
||
| 105 | saved_y = event->y; |
||
| 106 | show_cursor(saved_x, saved_y); |
||
| 107 | } |
||
| 108 | } |
||
| 109 | |||
| 110 | /* with AUTOOFF flag*/ |
||
| 111 | static void autocursor_mouse_handler_3(MOUSE_EVT *event) |
||
| 112 | { |
||
| 113 | #ifdef CURTXT_DEBUG |
||
| 114 | printk(KERN_DEBUG "mcurtxt.c: autocursor_mouse_handler_3\n"); |
||
| 115 | #endif |
||
| 116 | sem_wait(&mutex); |
||
| 117 | |||
| 118 | if (mouse_cursor_state < 0) { |
||
| 119 | restore_cursor(saved_x, saved_y); |
||
| 120 | saved_x = event->x; |
||
| 121 | saved_y = event->y; |
||
| 122 | if (user_mouse_handler != NULL) |
||
| 123 | user_mouse_handler(event); |
||
| 124 | show_cursor(saved_x, saved_y); |
||
| 125 | } else if (user_mouse_handler != NULL) |
||
| 126 | user_mouse_handler(event); |
||
| 127 | |||
| 128 | sem_post(&mutex); |
||
| 129 | } |
||
| 130 | |||
| 131 | /* with WITHOUTSEM & AUTOOFF flags */ |
||
| 132 | static void autocursor_mouse_handler_4(MOUSE_EVT *event) |
||
| 133 | { |
||
| 134 | #ifdef CURTXT_DEBUG |
||
| 135 | printk(KERN_DEBUG "mcurtxt.c: autocursor_mouse_handler_4\n"); |
||
| 136 | #endif |
||
| 137 | if (mouse_cursor_state < 0) { |
||
| 138 | restore_cursor(saved_x, saved_y); |
||
| 139 | saved_x = event->x; |
||
| 140 | saved_y = event->y; |
||
| 141 | if (user_mouse_handler != NULL) |
||
| 142 | user_mouse_handler(event); |
||
| 143 | show_cursor(saved_x, saved_y); |
||
| 144 | } else if (user_mouse_handler != NULL) |
||
| 145 | user_mouse_handler(event); |
||
| 146 | } |
||
| 147 | |||
| 148 | /* -------------- |
||
| 149 | * TXT management |
||
| 150 | * -------------- |
||
| 151 | */ |
||
| 152 | |||
| 153 | /* text cursor shape */ |
||
| 154 | #define DEFAULTTXTSHAPE 0x7700ffff |
||
| 155 | static DWORD saved_txtshape = DEFAULTTXTSHAPE; |
||
| 156 | static BYTE attr_andmask, attr_xormask; |
||
| 157 | static BYTE c_andmask, c_xormask; |
||
| 158 | |||
| 159 | /* saved values */ |
||
| 160 | static BYTE saved_attr, saved_c; |
||
| 161 | |||
| 162 | /* show txt cursor */ |
||
| 163 | void show_txt_cursor(int x, int y) |
||
| 164 | { |
||
| 165 | int attr,c; |
||
| 166 | |||
| 167 | getc_xy(x, y, &saved_attr, &saved_c); |
||
| 168 | attr = (saved_attr & attr_andmask) ^ attr_xormask; |
||
| 169 | c = (saved_c & c_andmask) ^ c_xormask; |
||
| 170 | putc_xy(x, y, attr, c); |
||
| 171 | } |
||
| 172 | |||
| 173 | /* restore txt cursor */ |
||
| 174 | static void restore_txt_cursor(int x, int y) |
||
| 175 | { |
||
| 176 | putc_xy(x, y, saved_attr, saved_c); |
||
| 177 | } |
||
| 178 | |||
| 179 | /* define text shape */ |
||
| 180 | int mouse_txtshape(DWORD img) |
||
| 181 | { |
||
| 182 | int cond; |
||
| 183 | |||
| 184 | if (img == DEFAULT) |
||
| 185 | img = DEFAULTTXTSHAPE; |
||
| 186 | |||
| 187 | cond = ( (autocursormode & STATUSMASK) == ENABLE && (autocursormode & TXTCURSOR) == TXTCURSOR ); |
||
| 188 | |||
| 189 | if (cond) |
||
| 190 | restore_txt_cursor(saved_x, saved_y); |
||
| 191 | |||
| 192 | saved_txtshape = img; |
||
| 193 | c_andmask = img & 0xff; |
||
| 194 | attr_andmask = (img & 0xff00) >> 8; |
||
| 195 | c_xormask = (img & 0xff0000) >> 16; |
||
| 196 | attr_xormask = (img & 0xff000000) >> 24; |
||
| 197 | |||
| 198 | #ifdef CURTXT_DEBUG |
||
| 199 | printk(KERN_DEBUG "MouseTxt_Shape: %x %x %x %x\n", c_andmask, attr_andmask, c_xormask, attr_xormask); |
||
| 200 | #endif |
||
| 201 | if (cond) |
||
| 202 | show_txt_cursor(saved_x, saved_y); |
||
| 203 | |||
| 204 | return 0; |
||
| 205 | } |
||
| 206 | |||
| 207 | /* |
||
| 208 | * User interface to autocursor functions |
||
| 209 | */ |
||
| 210 | |||
| 211 | /* display the cursor */ |
||
| 212 | #define MOUSE_ON() { \ |
||
| 213 | int unused; \ |
||
| 214 | unsigned long lunused; \ |
||
| 215 | mouse_cursor_state--; \ |
||
| 216 | if (mouse_cursor_state == -1) { \ |
||
| 217 | mouse_getpos(&saved_x, &saved_y, &unused, &lunused); \ |
||
| 218 | show_cursor(saved_x, saved_y); \ |
||
| 219 | } \ |
||
| 220 | } |
||
| 221 | |||
| 222 | static void mouse_on_sem(void) |
||
| 223 | { |
||
| 224 | sem_wait(&mutex); |
||
| 225 | MOUSE_ON(); |
||
| 226 | sem_post(&mutex); |
||
| 227 | } |
||
| 228 | |||
| 229 | static void mouse_on_nosem(void) |
||
| 230 | { |
||
| 231 | MOUSE_ON(); |
||
| 232 | } |
||
| 233 | |||
| 234 | void (*mouse_on)(void)=mouse_on_nosem; |
||
| 235 | |||
| 236 | /* hide the cursor */ |
||
| 237 | #define MOUSE_OFF() { \ |
||
| 238 | mouse_cursor_state++; \ |
||
| 239 | if (mouse_cursor_state == 0) \ |
||
| 240 | restore_cursor(saved_x, saved_y); \ |
||
| 241 | } |
||
| 242 | |||
| 243 | void mouse_off_sem(void) |
||
| 244 | { |
||
| 245 | sem_wait(&mutex); |
||
| 246 | MOUSE_OFF(); |
||
| 247 | sem_post(&mutex); |
||
| 248 | } |
||
| 249 | |||
| 250 | void mouse_off_nosem(void) |
||
| 251 | { |
||
| 252 | MOUSE_OFF(); |
||
| 253 | } |
||
| 254 | |||
| 255 | void (*mouse_off)(void) = mouse_off_nosem; |
||
| 256 | |||
| 257 | static MOUSE_HANDLER wich_handler(int cmd) |
||
| 258 | { |
||
| 259 | if ( ((cmd & WITHOUTSEM) == WITHOUTSEM) && ((cmd & AUTOOFF) == AUTOOFF) ) |
||
| 260 | return autocursor_mouse_handler_4; |
||
| 261 | if ((cmd & WITHOUTSEM) == WITHOUTSEM) |
||
| 262 | return autocursor_mouse_handler_2; |
||
| 263 | if ((cmd & AUTOOFF) == AUTOOFF) |
||
| 264 | return autocursor_mouse_handler_3; |
||
| 265 | return autocursor_mouse_handler_1; |
||
| 266 | } |
||
| 267 | |||
| 268 | int mouse_txtcursor(int cmd) |
||
| 269 | { |
||
| 270 | mouse_txtshape(saved_txtshape); |
||
| 271 | return _mouse_cursor_init(cmd|TXTCURSOR, show_txt_cursor, restore_txt_cursor); |
||
| 272 | } |
||
| 273 | |||
| 274 | /* Generic functions, both for text & graphics mode */ |
||
| 275 | |||
| 276 | int _mouse_cursor_init(int cmd, void(*my_show_cursor)(int, int), void(*my_restore_cursor)(int, int)) |
||
| 277 | { |
||
| 278 | if (mutex == -1) { |
||
| 279 | if (sem_init(&mutex, 0, 1) == -1) |
||
| 280 | return -1; |
||
| 281 | } |
||
| 282 | |||
| 283 | #ifdef CURTXT_DEBUG |
||
| 284 | printk(KERN_DEBUG "mouse_cursor_init: command %x\n", cmd); |
||
| 285 | #endif |
||
| 286 | |||
| 287 | switch (cmd & STATUSMASK) { |
||
| 288 | case DISABLE: |
||
| 289 | //show_mouse_handler = user_mouse_handler; |
||
| 290 | show_mouse_handler = NULL; |
||
| 291 | restore_cursor(saved_x, saved_y); |
||
| 292 | show_cursor = dummy; |
||
| 293 | restore_cursor = dummy; |
||
| 294 | mouse_cursor_state = 0; |
||
| 295 | break; |
||
| 296 | case ENABLE: |
||
| 297 | restore_cursor(saved_x, saved_y); |
||
| 298 | restore_cursor = my_restore_cursor; |
||
| 299 | show_cursor = my_show_cursor; |
||
| 300 | if ((autocursormode & STATUSMASK) == DISABLE) { |
||
| 301 | //user_mouse_handler = show_mouse_handler; |
||
| 302 | show_mouse_handler = wich_handler(cmd); |
||
| 303 | } |
||
| 304 | mouse_cursor_state = -1; |
||
| 305 | break; |
||
| 306 | default: |
||
| 307 | return -1; |
||
| 308 | } |
||
| 309 | |||
| 310 | autocursormode = cmd; |
||
| 311 | |||
| 312 | if ((autocursormode & STATUSMASK) == ENABLE) { |
||
| 313 | if ((cmd & WITHOUTSEM) == WITHOUTSEM) { |
||
| 314 | mouse_on = mouse_on_nosem; |
||
| 315 | mouse_off = mouse_off_nosem; |
||
| 316 | } else { |
||
| 317 | mouse_on = mouse_on_sem; |
||
| 318 | mouse_off = mouse_off_sem; |
||
| 319 | } |
||
| 320 | } |
||
| 321 | |||
| 322 | return 0; |
||
| 323 | } |
||
| 324 | |||
| 325 | void _mouse_cursor_getposition(int *xptr, int *yptr) |
||
| 326 | { |
||
| 327 | *xptr = saved_x; |
||
| 328 | *yptr = saved_y; |
||
| 329 | } |