src/video/fbcon/SDL_fbevents.c
/* [<][>][^][v][top][bottom][index][help] */
FUNCTIONS
This source file includes following functions.
- FB_vgainitkeymaps
- FB_InGraphicsMode
- FB_EnterGraphicsMode
- FB_LeaveGraphicsMode
- FB_CloseKeyboard
- FB_OpenKeyboard
- FB_CloseMouse
- find_pid
- gpm_available
- detect_imps2
- FB_OpenMouse
- FB_vgamousecallback
- handle_mouse
- switch_vt
- handle_keyboard
- FB_PumpEvents
- FB_InitOSKeymap
- TranslateKey
1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public
7 License as published by the Free Software Foundation; either
8 version 2 of the License, or (at your option) any later version.
9
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Library General Public License for more details.
14
15 You should have received a copy of the GNU Library General Public
16 License along with this library; if not, write to the Free
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18
19 Sam Lantinga
20 slouken@devolution.com
21 */
22
23 #ifdef SAVE_RCSID
24 static char rcsid =
25 "@(#) $Id: SDL_fbevents.c,v 1.5.2.19 2001/02/28 12:06:11 hercules Exp $";
26 #endif
27
28 /* Handle the event stream, converting console events into SDL events */
29
30 #include <sys/types.h>
31 #include <sys/time.h>
32 #include <sys/ioctl.h>
33 #include <stdlib.h>
34 #include <stdio.h>
35 #include <unistd.h>
36 #include <fcntl.h>
37 #include <string.h>
38 #include <errno.h>
39 #include <limits.h>
40
41 /* For parsing /proc */
42 #include <dirent.h>
43 #include <ctype.h>
44
45 #include <linux/vt.h>
46 #include <linux/kd.h>
47 #include <linux/keyboard.h>
48
49 #include "SDL.h"
50 #include "SDL_mutex.h"
51 #include "SDL_sysevents.h"
52 #include "SDL_sysvideo.h"
53 #include "SDL_events_c.h"
54 #include "SDL_fbvideo.h"
55 #include "SDL_fbevents_c.h"
56 #include "SDL_fbkeys.h"
57
58 #include "SDL_fbelo.h"
59
60 #ifndef GPM_NODE_FIFO
61 #define GPM_NODE_FIFO "/dev/gpmdata"
62 #endif
63
64
65 /* The translation tables from a console scancode to a SDL keysym */
66 #define NUM_VGAKEYMAPS (1<<KG_CAPSSHIFT)
67 static Uint16 vga_keymap[NUM_VGAKEYMAPS][NR_KEYS];
68 static SDLKey keymap[128];
69 static Uint16 keymap_temp[128]; /* only used at startup */
70 static SDL_keysym *TranslateKey(int scancode, SDL_keysym *keysym);
71
72 /* Ugh, we have to duplicate the kernel's keysym mapping code...
73 Oh, it's not so bad. :-)
74
75 FIXME: Add keyboard LED handling code
76 */
77 static void FB_vgainitkeymaps(int fd)
/* [<][>][^][v][top][bottom][index][help] */
78 {
79 struct kbentry entry;
80 int map, i;
81
82 /* Don't do anything if we are passed a closed keyboard */
83 if ( fd < 0 ) {
84 return;
85 }
86
87 /* Load all the keysym mappings */
88 for ( map=0; map<NUM_VGAKEYMAPS; ++map ) {
89 memset(vga_keymap[map], 0, NR_KEYS*sizeof(Uint16));
90 for ( i=0; i<NR_KEYS; ++i ) {
91 entry.kb_table = map;
92 entry.kb_index = i;
93 if ( ioctl(fd, KDGKBENT, &entry) == 0 ) {
94 /* fill keytemp. This replaces SDL_fbkeys.h */
95 if ( (map == 0) && (i<128) ) {
96 keymap_temp[i] = entry.kb_value;
97 }
98 /* The "Enter" key is a special case */
99 if ( entry.kb_value == K_ENTER ) {
100 entry.kb_value = K(KT_ASCII,13);
101 }
102 /* Handle numpad specially as well */
103 if ( KTYP(entry.kb_value) == KT_PAD ) {
104 switch ( entry.kb_value ) {
105 case K_P0:
106 case K_P1:
107 case K_P2:
108 case K_P3:
109 case K_P4:
110 case K_P5:
111 case K_P6:
112 case K_P7:
113 case K_P8:
114 case K_P9:
115 vga_keymap[map][i]=entry.kb_value;
116 vga_keymap[map][i]+= '0';
117 break;
118 case K_PPLUS:
119 vga_keymap[map][i]=K(KT_ASCII,'+');
120 break;
121 case K_PMINUS:
122 vga_keymap[map][i]=K(KT_ASCII,'-');
123 break;
124 case K_PSTAR:
125 vga_keymap[map][i]=K(KT_ASCII,'*');
126 break;
127 case K_PSLASH:
128 vga_keymap[map][i]=K(KT_ASCII,'/');
129 break;
130 case K_PENTER:
131 vga_keymap[map][i]=K(KT_ASCII,'\r');
132 break;
133 case K_PCOMMA:
134 vga_keymap[map][i]=K(KT_ASCII,',');
135 break;
136 case K_PDOT:
137 vga_keymap[map][i]=K(KT_ASCII,'.');
138 break;
139 default:
140 break;
141 }
142 }
143 /* Do the normal key translation */
144 if ( (KTYP(entry.kb_value) == KT_LATIN) ||
145 (KTYP(entry.kb_value) == KT_ASCII) ||
146 (KTYP(entry.kb_value) == KT_LETTER) ) {
147 vga_keymap[map][i] = entry.kb_value;
148 }
149 }
150 }
151 }
152 }
153
154 int FB_InGraphicsMode(_THIS)
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155 {
156 return((keyboard_fd >= 0) && (saved_kbd_mode >= 0));
157 }
158
159 int FB_EnterGraphicsMode(_THIS)
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160 {
161 struct termios keyboard_termios;
162
163 /* Set medium-raw keyboard mode */
164 if ( (keyboard_fd >= 0) && !FB_InGraphicsMode(this) ) {
165
166 /* Switch to the correct virtual terminal */
167 if ( current_vt > 0 ) {
168 struct vt_stat vtstate;
169
170 if ( ioctl(keyboard_fd, VT_GETSTATE, &vtstate) == 0 ) {
171 saved_vt = vtstate.v_active;
172 }
173 if ( ioctl(keyboard_fd, VT_ACTIVATE, current_vt) == 0 ) {
174 ioctl(keyboard_fd, VT_WAITACTIVE, current_vt);
175 }
176 }
177
178 /* Set the terminal input mode */
179 if ( tcgetattr(keyboard_fd, &saved_kbd_termios) < 0 ) {
180 SDL_SetError("Unable to get terminal attributes");
181 if ( keyboard_fd > 0 ) {
182 close(keyboard_fd);
183 }
184 keyboard_fd = -1;
185 return(-1);
186 }
187 if ( ioctl(keyboard_fd, KDGKBMODE, &saved_kbd_mode) < 0 ) {
188 SDL_SetError("Unable to get current keyboard mode");
189 if ( keyboard_fd > 0 ) {
190 close(keyboard_fd);
191 }
192 keyboard_fd = -1;
193 return(-1);
194 }
195 keyboard_termios = saved_kbd_termios;
196 keyboard_termios.c_lflag &= ~(ICANON | ECHO | ISIG);
197 keyboard_termios.c_iflag &= ~(ISTRIP | IGNCR | ICRNL | INLCR | IXOFF | IXON);
198 keyboard_termios.c_cc[VMIN] = 0;
199 keyboard_termios.c_cc[VTIME] = 0;
200 if (tcsetattr(keyboard_fd, TCSAFLUSH, &keyboard_termios) < 0) {
201 FB_CloseKeyboard(this);
202 SDL_SetError("Unable to set terminal attributes");
203 return(-1);
204 }
205 /* This will fail if we aren't root or this isn't our tty */
206 if ( ioctl(keyboard_fd, KDSKBMODE, K_MEDIUMRAW) < 0 ) {
207 FB_CloseKeyboard(this);
208 SDL_SetError("Unable to set keyboard in raw mode");
209 return(-1);
210 }
211 if ( ioctl(keyboard_fd, KDSETMODE, KD_GRAPHICS) < 0 ) {
212 FB_CloseKeyboard(this);
213 SDL_SetError("Unable to set keyboard in graphics mode");
214 return(-1);
215 }
216 }
217 return(keyboard_fd);
218 }
219
220 void FB_LeaveGraphicsMode(_THIS)
/* [<][>][^][v][top][bottom][index][help] */
221 {
222 if ( FB_InGraphicsMode(this) ) {
223 ioctl(keyboard_fd, KDSETMODE, KD_TEXT);
224 ioctl(keyboard_fd, KDSKBMODE, saved_kbd_mode);
225 tcsetattr(keyboard_fd, TCSAFLUSH, &saved_kbd_termios);
226 saved_kbd_mode = -1;
227
228 /* Head back over to the original virtual terminal */
229 if ( saved_vt > 0 ) {
230 ioctl(keyboard_fd, VT_ACTIVATE, saved_vt);
231 }
232 }
233 }
234
235 void FB_CloseKeyboard(_THIS)
/* [<][>][^][v][top][bottom][index][help] */
236 {
237 if ( keyboard_fd >= 0 ) {
238 FB_LeaveGraphicsMode(this);
239 if ( keyboard_fd > 0 ) {
240 close(keyboard_fd);
241 }
242 }
243 keyboard_fd = -1;
244 }
245
246 int FB_OpenKeyboard(_THIS)
/* [<][>][^][v][top][bottom][index][help] */
247 {
248 /* Open only if not already opened */
249 if ( keyboard_fd < 0 ) {
250 char *tty0[] = { "/dev/tty0", "/dev/vc/0", NULL };
251 char *vcs[] = { "/dev/vc/%d", "/dev/tty%d", NULL };
252 int i, tty0_fd;
253
254 /* Try to query for a free virtual terminal */
255 tty0_fd = -1;
256 for ( i=0; tty0[i] && (tty0_fd < 0); ++i ) {
257 tty0_fd = open(tty0[i], O_WRONLY, 0);
258 }
259 if ( tty0_fd < 0 ) {
260 tty0_fd = dup(0); /* Maybe stdin is a VT? */
261 }
262 ioctl(tty0_fd, VT_OPENQRY, ¤t_vt);
263 close(tty0_fd);
264 if ( (geteuid() == 0) && (current_vt > 0) ) {
265 for ( i=0; vcs[i] && (keyboard_fd < 0); ++i ) {
266 char vtpath[12];
267
268 sprintf(vtpath, vcs[i], current_vt);
269 keyboard_fd = open(vtpath, O_RDWR, 0);
270 #ifdef DEBUG_KEYBOARD
271 fprintf(stderr, "vtpath = %s, fd = %d\n",
272 vtpath, keyboard_fd);
273 #endif /* DEBUG_KEYBOARD */
274
275 /* This needs to be our controlling tty
276 so that the kernel ioctl() calls work
277 */
278 if ( keyboard_fd >= 0 ) {
279 tty0_fd = open("/dev/tty", O_RDWR, 0);
280 if ( tty0_fd >= 0 ) {
281 ioctl(tty0_fd, TIOCNOTTY, 0);
282 close(tty0_fd);
283 }
284 }
285 }
286 }
287 if ( keyboard_fd < 0 ) {
288 /* Last resort, maybe our tty is a usable VT */
289 current_vt = 0;
290 keyboard_fd = open("/dev/tty", O_RDWR);
291 }
292 #ifdef DEBUG_KEYBOARD
293 fprintf(stderr, "Current VT: %d\n", current_vt);
294 #endif
295 saved_kbd_mode = -1;
296
297 /* Make sure that our input is a console terminal */
298 { int dummy;
299 if ( ioctl(keyboard_fd, KDGKBMODE, &dummy) < 0 ) {
300 close(keyboard_fd);
301 keyboard_fd = -1;
302 SDL_SetError("Unable to open a console terminal");
303 }
304 }
305
306 /* Set up keymap */
307 FB_vgainitkeymaps(keyboard_fd);
308 }
309 return(keyboard_fd);
310 }
311
312 static enum {
313 MOUSE_NONE = -1,
314 MOUSE_GPM, /* Note: GPM uses the MSC protocol */
315 MOUSE_PS2,
316 MOUSE_IMPS2,
317 MOUSE_MS,
318 MOUSE_BM,
319 MOUSE_ELO,
320 NUM_MOUSE_DRVS
321 } mouse_drv = MOUSE_NONE;
322
323 void FB_CloseMouse(_THIS)
/* [<][>][^][v][top][bottom][index][help] */
324 {
325 if ( mouse_fd > 0 ) {
326 close(mouse_fd);
327 }
328 mouse_fd = -1;
329 }
330
331 /* Returns processes listed in /proc with the desired name */
332 static int find_pid(DIR *proc, const char *wanted_name)
/* [<][>][^][v][top][bottom][index][help] */
333 {
334 struct dirent *entry;
335 int pid;
336
337 /* First scan proc for the gpm process */
338 pid = 0;
339 while ( (pid == 0) && ((entry=readdir(proc)) != NULL) ) {
340 if ( isdigit(entry->d_name[0]) ) {
341 FILE *status;
342 char path[PATH_MAX];
343 char name[PATH_MAX];
344
345 sprintf(path, "/proc/%s/status", entry->d_name);
346 status=fopen(path, "r");
347 if ( status ) {
348 name[0] = '\0';
349 fscanf(status, "Name: %s", name);
350 if ( strcmp(name, wanted_name) == 0 ) {
351 pid = atoi(entry->d_name);
352 }
353 fclose(status);
354 }
355 }
356 }
357 return pid;
358 }
359
360 /* Returns true if /dev/gpmdata is being written to by gpm */
361 static int gpm_available(void)
/* [<][>][^][v][top][bottom][index][help] */
362 {
363 int available;
364 DIR *proc;
365 int pid;
366 int cmdline, len, arglen;
367 char path[PATH_MAX];
368 char args[PATH_MAX], *arg;
369
370 /* Don't bother looking if the fifo isn't there */
371 if ( access(GPM_NODE_FIFO, F_OK) < 0 ) {
372 return(0);
373 }
374
375 available = 0;
376 proc = opendir("/proc");
377 if ( proc ) {
378 while ( (pid=find_pid(proc, "gpm")) > 0 ) {
379 sprintf(path, "/proc/%d/cmdline", pid);
380 cmdline = open(path, O_RDONLY, 0);
381 if ( cmdline >= 0 ) {
382 len = read(cmdline, args, sizeof(args));
383 arg = args;
384 while ( len > 0 ) {
385 if ( strcmp(arg, "-R") == 0 ) {
386 available = 1;
387 }
388 arglen = strlen(arg)+1;
389 len -= arglen;
390 arg += arglen;
391 }
392 close(cmdline);
393 }
394 }
395 closedir(proc);
396 }
397 return available;
398 }
399
400 /* Returns true if the mouse uses the IMPS/2 protocol */
401 static int detect_imps2(int fd)
/* [<][>][^][v][top][bottom][index][help] */
402 {
403 int imps2;
404
405 imps2 = 0;
406 if ( getenv("SDL_MOUSEDEV_IMPS2") ) {
407 imps2 = 1;
408 }
409 if ( ! imps2 ) {
410 unsigned char query_ps2 = 0xF2;
411 fd_set fdset;
412 struct timeval tv;
413
414
415 /* Get rid of any mouse motion noise */
416 FD_ZERO(&fdset);
417 FD_SET(fd, &fdset);
418 tv.tv_sec = 0;
419 tv.tv_usec = 0;
420 while ( select(fd+1, &fdset, 0, 0, &tv) > 0 ) {
421 char temp[32];
422 read(fd, temp, sizeof(temp));
423 }
424
425 /* Query for the type of mouse protocol */
426 if ( write(fd, &query_ps2, 1) == 1 ) {
427 unsigned char ch = 0;
428
429 /* If you wanted to control the mouse mode:
430 Set IMPS/2 protocol:
431 {0xf3,200,0xf3,100,0xf3,80}
432 Reset mouse device:
433 {0xFF}
434 */
435 /* Get the mouse protocol response */
436 do {
437 FD_ZERO(&fdset);
438 FD_SET(fd, &fdset);
439 tv.tv_sec = 1;
440 tv.tv_usec = 0;
441 if ( select(fd+1, &fdset, 0, 0, &tv) < 1 ) {
442 break;
443 }
444 } while ( (read(fd, &ch, 1) == 1) &&
445 ((ch == 0xFA) || (ch == 0xAA)) );
446
447 /* Experimental values (Logitech wheelmouse) */
448 #ifdef DEBUG_MOUSE
449 fprintf(stderr, "Last mouse mode: 0x%x\n", ch);
450 #endif
451 if ( ch == 3 ) {
452 imps2 = 1;
453 }
454 }
455 }
456 return imps2;
457 }
458
459 int FB_OpenMouse(_THIS)
/* [<][>][^][v][top][bottom][index][help] */
460 {
461 const char *mousedev;
462 const char *mousedrv;
463
464 mousedrv = getenv("SDL_MOUSEDRV");
465 mousedev = getenv("SDL_MOUSEDEV");
466 mouse_fd = -1;
467
468 /* ELO TOUCHSCREEN SUPPORT */
469
470 if( (mousedrv != NULL) && (strcmp(mousedrv, "ELO") == 0) ) {
471 mouse_fd = open(mousedev, O_RDWR);
472 if ( mouse_fd >= 0 ) {
473 if(eloInitController(mouse_fd)) {
474 #ifdef DEBUG_MOUSE
475 fprintf(stderr, "Using ELO touchscreen\n");
476 #endif
477 mouse_drv = MOUSE_ELO;
478 }
479
480 }
481 else if ( mouse_fd < 0 ) {
482 mouse_drv = MOUSE_NONE;
483 }
484
485 return(mouse_fd);
486 }
487
488 /* STD MICE */
489
490 if ( mousedev == NULL ) {
491 /* First try to use GPM in repeater mode */
492 if ( mouse_fd < 0 ) {
493 if ( gpm_available() ) {
494 mouse_fd = open(GPM_NODE_FIFO, O_RDONLY, 0);
495 if ( mouse_fd >= 0 ) {
496 #ifdef DEBUG_MOUSE
497 fprintf(stderr, "Using GPM mouse\n");
498 #endif
499 mouse_drv = MOUSE_GPM;
500 }
501 }
502 }
503 /* Now try to use the new HID unified mouse device */
504 if ( mouse_fd < 0 ) {
505 mouse_fd = open("/dev/input/mice", O_RDONLY, 0);
506 if ( mouse_fd >= 0 ) {
507 mouse_drv = MOUSE_IMPS2;
508 }
509 }
510 /* Now try to use a modern PS/2 port mouse */
511 if ( mouse_fd < 0 ) {
512 mouse_fd = open("/dev/psaux", O_RDWR, 0);
513 if ( mouse_fd < 0 ) {
514 mouse_fd = open("/dev/psaux", O_RDONLY, 0);
515 }
516 if ( mouse_fd >= 0 ) {
517 if ( detect_imps2(mouse_fd) ) {
518 #ifdef DEBUG_MOUSE
519 fprintf(stderr, "Using IMPS/2 mouse\n");
520 #endif
521 mouse_drv = MOUSE_IMPS2;
522 } else {
523 #ifdef DEBUG_MOUSE
524 fprintf(stderr, "Using PS/2 mouse\n");
525 #endif
526 mouse_drv = MOUSE_PS2;
527 }
528 }
529 }
530 /* Next try to use a PPC ADB port mouse */
531 if ( mouse_fd < 0 ) {
532 mouse_fd = open("/dev/adbmouse", O_RDONLY, 0);
533 if ( mouse_fd >= 0 ) {
534 #ifdef DEBUG_MOUSE
535 fprintf(stderr, "Using ADB mouse\n");
536 #endif
537 mouse_drv = MOUSE_BM;
538 }
539 }
540 }
541 /* Default to a serial Microsoft mouse */
542 if ( mouse_fd < 0 ) {
543 if ( mousedev == NULL ) {
544 mousedev = "/dev/mouse";
545 }
546 mouse_fd = open(mousedev, O_RDONLY, 0);
547 if ( mouse_fd >= 0 ) {
548 struct termios mouse_termios;
549
550 /* Set the sampling speed to 1200 baud */
551 tcgetattr(mouse_fd, &mouse_termios);
552 mouse_termios.c_iflag = IGNBRK | IGNPAR;
553 mouse_termios.c_oflag = 0;
554 mouse_termios.c_lflag = 0;
555 mouse_termios.c_line = 0;
556 mouse_termios.c_cc[VTIME] = 0;
557 mouse_termios.c_cc[VMIN] = 1;
558 mouse_termios.c_cflag = CREAD | CLOCAL | HUPCL;
559 mouse_termios.c_cflag |= CS8;
560 mouse_termios.c_cflag |= B1200;
561 tcsetattr(mouse_fd, TCSAFLUSH, &mouse_termios);
562 #ifdef DEBUG_MOUSE
563 fprintf(stderr, "Using Microsoft mouse on %s\n", mousedev);
564 #endif
565 mouse_drv = MOUSE_MS;
566 }
567 }
568 if ( mouse_fd < 0 ) {
569 mouse_drv = MOUSE_NONE;
570 }
571 return(mouse_fd);
572 }
573
574 static int posted = 0;
575
576 void FB_vgamousecallback(int button, int relative, int dx, int dy)
/* [<][>][^][v][top][bottom][index][help] */
577 {
578 int button_1, button_3;
579 int button_state;
580 int state_changed;
581 int i;
582 Uint8 state;
583
584 if ( dx || dy ) {
585 posted += SDL_PrivateMouseMotion(0, relative, dx, dy);
586 }
587
588 /* Swap button 1 and 3 */
589 button_1 = (button & 0x04) >> 2;
590 button_3 = (button & 0x01) << 2;
591 button &= ~0x05;
592 button |= (button_1|button_3);
593
594 /* See what changed */
595 button_state = SDL_GetMouseState(NULL, NULL);
596 state_changed = button_state ^ button;
597 for ( i=0; i<8; ++i ) {
598 if ( state_changed & (1<<i) ) {
599 if ( button & (1<<i) ) {
600 state = SDL_PRESSED;
601 } else {
602 state = SDL_RELEASED;
603 }
604 posted += SDL_PrivateMouseButton(state, i+1, 0, 0);
605 }
606 }
607 }
608
609 /* For now, use GPM, PS/2, and MS protocols
610 Driver adapted from the SVGAlib mouse driver code (taken from gpm, etc.)
611 */
612 static void handle_mouse(_THIS)
/* [<][>][^][v][top][bottom][index][help] */
613 {
614 static int start = 0;
615 static unsigned char mousebuf[BUFSIZ];
616 static int relative = 1;
617
618 int i, nread;
619 int button = 0;
620 int dx = 0, dy = 0;
621 int packetsize = 0;
622
623 /* Figure out the mouse packet size */
624 switch (mouse_drv) {
625 case MOUSE_NONE:
626 /* Ack! */
627 read(mouse_fd, mousebuf, BUFSIZ);
628 return;
629 case MOUSE_GPM:
630 packetsize = 5;
631 break;
632 case MOUSE_IMPS2:
633 packetsize = 4;
634 break;
635 case MOUSE_PS2:
636 case MOUSE_MS:
637 case MOUSE_BM:
638 packetsize = 3;
639 break;
640 case MOUSE_ELO:
641 packetsize = ELO_PACKET_SIZE;
642 relative = 0;
643 break;
644 case NUM_MOUSE_DRVS:
645 /* Uh oh.. */
646 packetsize = 0;
647 break;
648 }
649
650 /* Read as many packets as possible */
651 nread = read(mouse_fd, &mousebuf[start], BUFSIZ-start);
652 if ( nread < 0 ) {
653 return;
654 }
655 nread += start;
656 #ifdef DEBUG_MOUSE
657 fprintf(stderr, "Read %d bytes from mouse, start = %d\n", nread, start);
658 #endif
659 for ( i=0; i<(nread-(packetsize-1)); i += packetsize ) {
660 switch (mouse_drv) {
661 case MOUSE_NONE:
662 break;
663 case MOUSE_GPM:
664 /* GPM protocol has 0x80 in high byte */
665 if ( (mousebuf[i] & 0xF8) != 0x80 ) {
666 /* Go to next byte */
667 i -= (packetsize-1);
668 continue;
669 }
670 /* Get current mouse state */
671 button = (~mousebuf[i]) & 0x07;
672 dx = (signed char)(mousebuf[i+1]) +
673 (signed char)(mousebuf[i+3]);
674 dy = -((signed char)(mousebuf[i+2]) +
675 (signed char)(mousebuf[i+4]));
676 break;
677 case MOUSE_PS2:
678 /* PS/2 protocol has nothing in high byte */
679 if ( (mousebuf[i] & 0xC0) != 0 ) {
680 /* Go to next byte */
681 i -= (packetsize-1);
682 continue;
683 }
684 /* Get current mouse state */
685 button = (mousebuf[i] & 0x04) >> 1 | /*Middle*/
686 (mousebuf[i] & 0x02) >> 1 | /*Right*/
687 (mousebuf[i] & 0x01) << 2; /*Left*/
688 dx = (mousebuf[i] & 0x10) ?
689 mousebuf[i+1] - 256 : mousebuf[i+1];
690 dy = (mousebuf[i] & 0x20) ?
691 -(mousebuf[i+2] - 256) : -mousebuf[i+2];
692 break;
693 case MOUSE_IMPS2:
694 /* Get current mouse state */
695 button = (mousebuf[i] & 0x04) >> 1 | /*Middle*/
696 (mousebuf[i] & 0x02) >> 1 | /*Right*/
697 (mousebuf[i] & 0x01) << 2 | /*Left*/
698 (mousebuf[i] & 0x40) >> 3 | /* 4 */
699 (mousebuf[i] & 0x80) >> 3; /* 5 */
700 dx = (mousebuf[i] & 0x10) ?
701 mousebuf[i+1] - 256 : mousebuf[i+1];
702 dy = (mousebuf[i] & 0x20) ?
703 -(mousebuf[i+2] - 256) : -mousebuf[i+2];
704 switch (mousebuf[i+3]&0x0F) {
705 case 0x0E: /* DX = +1 */
706 case 0x02: /* DX = -1 */
707 break;
708 case 0x0F: /* DY = +1 (map button 4) */
709 button |= (1<<3);
710 break;
711 case 0x01: /* DY = -1 (map button 5) */
712 button |= (1<<4);
713 break;
714 }
715 break;
716 case MOUSE_MS:
717 /* Microsoft protocol has 0x40 in high byte */
718 if ( (mousebuf[i] & 0x40) != 0x40 ) {
719 /* Go to next byte */
720 i -= (packetsize-1);
721 continue;
722 }
723 /* Get current mouse state */
724 button = ((mousebuf[i] & 0x20) >> 3) |
725 ((mousebuf[i] & 0x10) >> 4);
726 dx = (signed char)(((mousebuf[i] & 0x03) << 6) |
727 (mousebuf[i + 1] & 0x3F));
728 dy = (signed char)(((mousebuf[i] & 0x0C) << 4) |
729 (mousebuf[i + 2] & 0x3F));
730 break;
731 case MOUSE_BM:
732 /* BusMouse protocol has 0xF8 in high byte */
733 if ( (mousebuf[i] & 0xF8) != 0x80 ) {
734 /* Go to next byte */
735 i -= (packetsize-1);
736 continue;
737 }
738 /* Get current mouse state */
739 button = (~mousebuf[i]) & 0x07;
740 dx = (signed char)mousebuf[i+1];
741 dy = -(signed char)mousebuf[i+2];
742 break;
743 case MOUSE_ELO:
744 /* ELO protocol has ELO_START_BYTE as first byte */
745 if ( mousebuf[i] != ELO_START_BYTE ) {
746 /* Go to next byte */
747 i -= (packetsize-1);
748 continue;
749 }
750
751 /* parse the packet */
752 if(!eloParsePacket(&(mousebuf[i]), &dx, &dy, &button)) {
753 break;
754 }
755
756 button = (button & 0x01) << 2;
757
758 /* convert to screen coordinates */
759 eloConvertXY(this, &dx, &dy);
760 break;
761
762 case NUM_MOUSE_DRVS:
763 /* Uh oh.. */
764 dx = 0;
765 dy = 0;
766 break;
767 }
768 FB_vgamousecallback(button, relative, dx, dy);
769 }
770 if ( i < nread ) {
771 memcpy(mousebuf, &mousebuf[i], (nread-i));
772 start = (nread-i);
773 } else {
774 start = 0;
775 }
776 return;
777 }
778
779 /* Handle switching to another VC, returns when our VC is back */
780 static void switch_vt(_THIS, unsigned short which)
/* [<][>][^][v][top][bottom][index][help] */
781 {
782 struct vt_stat vtstate;
783 unsigned short current;
784 SDL_Surface *screen;
785 __u16 saved_pal[3*256];
786 Uint32 screen_arealen;
787 Uint8 *screen_contents;
788
789 /* Figure out whether or not we're switching to a new console */
790 if ( (ioctl(keyboard_fd, VT_GETSTATE, &vtstate) < 0) ||
791 (which == vtstate.v_active) ) {
792 return;
793 }
794 current = vtstate.v_active;
795
796 /* Save the contents of the screen, and go to text mode */
797 SDL_mutexP(hw_lock);
798 screen = SDL_VideoSurface;
799 screen_arealen = (screen->h*screen->pitch);
800 screen_contents = (Uint8 *)malloc(screen_arealen);
801 if ( screen_contents ) {
802 memcpy(screen_contents, screen->pixels, screen_arealen);
803 }
804 FB_SavePaletteTo(this, 256, saved_pal);
805 ioctl(keyboard_fd, KDSETMODE, KD_TEXT);
806
807 /* New console, switch to it */
808 if ( ioctl(keyboard_fd, VT_ACTIVATE, which) == 0 ) {
809 /* Wait for our console to be activated again */
810 ioctl(keyboard_fd, VT_WAITACTIVE, which);
811 while ( ioctl(keyboard_fd, VT_WAITACTIVE, current) < 0 ) {
812 if ( (errno != EINTR) && (errno != EAGAIN) ) {
813 /* Unknown VT error - cancel this */
814 break;
815 }
816 SDL_Delay(500);
817 }
818 }
819
820 /* Restore graphics mode and the contents of the screen */
821 ioctl(keyboard_fd, KDSETMODE, KD_GRAPHICS);
822 FB_RestorePaletteFrom(this, 256, saved_pal);
823 if ( screen_contents ) {
824 memcpy(screen->pixels, screen_contents, screen_arealen);
825 free(screen_contents);
826 }
827 SDL_mutexV(hw_lock);
828 }
829
830 static void handle_keyboard(_THIS)
/* [<][>][^][v][top][bottom][index][help] */
831 {
832 unsigned char keybuf[BUFSIZ];
833 int i, nread;
834 int pressed;
835 int scancode;
836 SDL_keysym keysym;
837
838 nread = read(keyboard_fd, keybuf, BUFSIZ);
839 for ( i=0; i<nread; ++i ) {
840 scancode = keybuf[i] & 0x7F;
841 if ( keybuf[i] & 0x80 ) {
842 pressed = SDL_RELEASED;
843 } else {
844 pressed = SDL_PRESSED;
845 }
846 TranslateKey(scancode, &keysym);
847 /* Handle Alt-FN for vt switch */
848 switch (keysym.sym) {
849 case SDLK_F1:
850 case SDLK_F2:
851 case SDLK_F3:
852 case SDLK_F4:
853 case SDLK_F5:
854 case SDLK_F6:
855 case SDLK_F7:
856 case SDLK_F8:
857 case SDLK_F9:
858 case SDLK_F10:
859 case SDLK_F11:
860 case SDLK_F12:
861 if ( SDL_GetModState() & KMOD_ALT ) {
862 switch_vt(this, (keysym.sym-SDLK_F1)+1);
863 break;
864 }
865 /* Fall through to normal processing */
866 default:
867 posted += SDL_PrivateKeyboard(pressed, &keysym);
868 break;
869 }
870 }
871 }
872
873 void FB_PumpEvents(_THIS)
/* [<][>][^][v][top][bottom][index][help] */
874 {
875 fd_set fdset;
876 int max_fd;
877 static struct timeval zero;
878
879 do {
880 posted = 0;
881
882 FD_ZERO(&fdset);
883 max_fd = 0;
884 if ( keyboard_fd >= 0 ) {
885 FD_SET(keyboard_fd, &fdset);
886 if ( max_fd < keyboard_fd ) {
887 max_fd = keyboard_fd;
888 }
889 }
890 if ( mouse_fd >= 0 ) {
891 FD_SET(mouse_fd, &fdset);
892 if ( max_fd < mouse_fd ) {
893 max_fd = mouse_fd;
894 }
895 }
896 if ( select(max_fd+1, &fdset, NULL, NULL, &zero) > 0 ) {
897 if ( keyboard_fd >= 0 ) {
898 if ( FD_ISSET(keyboard_fd, &fdset) ) {
899 handle_keyboard(this);
900 }
901 }
902 if ( mouse_fd >= 0 ) {
903 if ( FD_ISSET(mouse_fd, &fdset) ) {
904 handle_mouse(this);
905 }
906 }
907 }
908 } while ( posted );
909 }
910
911 void FB_InitOSKeymap(_THIS)
/* [<][>][^][v][top][bottom][index][help] */
912 {
913 int i;
914
915 /* Initialize the Linux key translation table */
916
917 /* First get the ascii keys and others not well handled */
918 for (i=0; i<SDL_TABLESIZE(keymap); ++i) {
919 switch(i) {
920 /* These aren't handled by the x86 kernel keymapping (?) */
921 case SCANCODE_PRINTSCREEN:
922 keymap[i] = SDLK_PRINT;
923 break;
924 case SCANCODE_BREAK:
925 keymap[i] = SDLK_BREAK;
926 break;
927 case SCANCODE_BREAK_ALTERNATIVE:
928 keymap[i] = SDLK_PAUSE;
929 break;
930 case SCANCODE_LEFTSHIFT:
931 keymap[i] = SDLK_LSHIFT;
932 break;
933 case SCANCODE_RIGHTSHIFT:
934 keymap[i] = SDLK_RSHIFT;
935 break;
936 case SCANCODE_LEFTCONTROL:
937 keymap[i] = SDLK_LCTRL;
938 break;
939 case SCANCODE_RIGHTCONTROL:
940 keymap[i] = SDLK_RCTRL;
941 break;
942 case SCANCODE_RIGHTWIN:
943 keymap[i] = SDLK_RSUPER;
944 break;
945 case SCANCODE_LEFTWIN:
946 keymap[i] = SDLK_LSUPER;
947 break;
948 case 127:
949 keymap[i] = SDLK_MENU;
950 break;
951 /* this should take care of all standard ascii keys */
952 default:
953 keymap[i] = KVAL(vga_keymap[0][i]);
954 break;
955 }
956 }
957 for (i=0; i<SDL_TABLESIZE(keymap); ++i) {
958 switch(keymap_temp[i]) {
959 case K_F1: keymap[i] = SDLK_F1; break;
960 case K_F2: keymap[i] = SDLK_F2; break;
961 case K_F3: keymap[i] = SDLK_F3; break;
962 case K_F4: keymap[i] = SDLK_F4; break;
963 case K_F5: keymap[i] = SDLK_F5; break;
964 case K_F6: keymap[i] = SDLK_F6; break;
965 case K_F7: keymap[i] = SDLK_F7; break;
966 case K_F8: keymap[i] = SDLK_F8; break;
967 case K_F9: keymap[i] = SDLK_F9; break;
968 case K_F10: keymap[i] = SDLK_F10; break;
969 case K_F11: keymap[i] = SDLK_F11; break;
970 case K_F12: keymap[i] = SDLK_F12; break;
971
972 case K_DOWN: keymap[i] = SDLK_DOWN; break;
973 case K_LEFT: keymap[i] = SDLK_LEFT; break;
974 case K_RIGHT: keymap[i] = SDLK_RIGHT; break;
975 case K_UP: keymap[i] = SDLK_UP; break;
976
977 case K_P0: keymap[i] = SDLK_KP0; break;
978 case K_P1: keymap[i] = SDLK_KP1; break;
979 case K_P2: keymap[i] = SDLK_KP2; break;
980 case K_P3: keymap[i] = SDLK_KP3; break;
981 case K_P4: keymap[i] = SDLK_KP4; break;
982 case K_P5: keymap[i] = SDLK_KP5; break;
983 case K_P6: keymap[i] = SDLK_KP6; break;
984 case K_P7: keymap[i] = SDLK_KP7; break;
985 case K_P8: keymap[i] = SDLK_KP8; break;
986 case K_P9: keymap[i] = SDLK_KP9; break;
987 case K_PPLUS: keymap[i] = SDLK_KP_PLUS; break;
988 case K_PMINUS: keymap[i] = SDLK_KP_MINUS; break;
989 case K_PSTAR: keymap[i] = SDLK_KP_MULTIPLY; break;
990 case K_PSLASH: keymap[i] = SDLK_KP_DIVIDE; break;
991 case K_PENTER: keymap[i] = SDLK_KP_ENTER; break;
992 case K_PDOT: keymap[i] = SDLK_KP_PERIOD; break;
993
994 case K_SHIFT: if ( keymap[i] != SDLK_RSHIFT )
995 keymap[i] = SDLK_LSHIFT;
996 break;
997 case K_SHIFTL: keymap[i] = SDLK_LSHIFT; break;
998 case K_SHIFTR: keymap[i] = SDLK_RSHIFT; break;
999 case K_CTRL: if ( keymap[i] != SDLK_RCTRL )
1000 keymap[i] = SDLK_LCTRL;
1001 break;
1002 case K_CTRLL: keymap[i] = SDLK_LCTRL; break;
1003 case K_CTRLR: keymap[i] = SDLK_RCTRL; break;
1004 case K_ALT: keymap[i] = SDLK_LALT; break;
1005 case K_ALTGR: keymap[i] = SDLK_RALT; break;
1006
1007 case K_INSERT: keymap[i] = SDLK_INSERT; break;
1008 case K_REMOVE: keymap[i] = SDLK_DELETE; break;
1009 case K_PGUP: keymap[i] = SDLK_PAGEUP; break;
1010 case K_PGDN: keymap[i] = SDLK_PAGEDOWN; break;
1011 case K_FIND: keymap[i] = SDLK_HOME; break;
1012 case K_SELECT: keymap[i] = SDLK_END; break;
1013
1014 case K_NUM: keymap[i] = SDLK_NUMLOCK; break;
1015 case K_CAPS: keymap[i] = SDLK_CAPSLOCK; break;
1016
1017 case K_F13: keymap[i] = SDLK_PRINT; break;
1018 case K_HOLD: keymap[i] = SDLK_SCROLLOCK; break;
1019 case K_PAUSE: keymap[i] = SDLK_PAUSE; break;
1020
1021 case 127: keymap[i] = SDLK_BACKSPACE; break;
1022
1023 default: break;
1024 }
1025 }
1026 }
1027
1028 static SDL_keysym *TranslateKey(int scancode, SDL_keysym *keysym)
/* [<][>][^][v][top][bottom][index][help] */
1029 {
1030 /* Set the keysym information */
1031 keysym->scancode = scancode;
1032 keysym->sym = keymap[scancode];
1033 keysym->mod = KMOD_NONE;
1034
1035 /* If UNICODE is on, get the UNICODE value for the key */
1036 keysym->unicode = 0;
1037 if ( SDL_TranslateUNICODE ) {
1038 int map;
1039 SDLMod modstate;
1040
1041 modstate = SDL_GetModState();
1042 map = 0;
1043 if ( modstate & KMOD_SHIFT ) {
1044 map |= (1<<KG_SHIFT);
1045 }
1046 if ( modstate & KMOD_CTRL ) {
1047 map |= (1<<KG_CTRL);
1048 }
1049 if ( modstate & KMOD_ALT ) {
1050 map |= (1<<KG_ALT);
1051 }
1052 if ( modstate & KMOD_MODE ) {
1053 map |= (1<<KG_ALTGR);
1054 }
1055 if ( KTYP(vga_keymap[map][scancode]) == KT_LETTER ) {
1056 if ( modstate & KMOD_CAPS ) {
1057 map ^= (1<<KG_SHIFT);
1058 }
1059 }
1060 if ( KTYP(vga_keymap[map][scancode]) == KT_PAD ) {
1061 if ( modstate & KMOD_NUM ) {
1062 keysym->unicode=KVAL(vga_keymap[map][scancode]);
1063 }
1064 } else {
1065 keysym->unicode = KVAL(vga_keymap[map][scancode]);
1066 }
1067 }
1068 return(keysym);
1069 }