sys/dev/misc/syscons/sctermvar.h

   1 /*-
   2  * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer as
  10  *    the first lines of this file unmodified.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  18  * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  *
  26  * $FreeBSD: src/sys/dev/syscons/sctermvar.h,v 1.1.2.2 2001/07/28 12:51:47 yokota Exp $
  27  * $DragonFly: src/sys/dev/misc/syscons/sctermvar.h,v 1.4 2005/05/27 22:57:40 swildner Exp $
  28  */
  29
  30 #ifndef _DEV_SYSCONS_SCTERMVAR_H_
  31 #define _DEV_SYSCONS_SCTERMVAR_H_
  32
  33 /*
  34  * building blocks for terminal emulator modules.
  35  */
  36
  37 static __inline void    sc_term_ins_line(scr_stat *scp, int y, int n, int ch,
  38                                          int attr, int tail);
  39 static __inline void    sc_term_del_line(scr_stat *scp, int y, int n, int ch,
  40                                          int attr, int tail);
  41 static __inline void    sc_term_ins_char(scr_stat *scp, int n, int ch,
  42                                          int attr);
  43 static __inline void    sc_term_del_char(scr_stat *scp, int n, int ch,
  44                                          int attr);
  45 static __inline void    sc_term_col(scr_stat *scp, int n);
  46 static __inline void    sc_term_row(scr_stat *scp, int n);
  47 static __inline void    sc_term_up(scr_stat *scp, int n, int head);
  48 static __inline void    sc_term_down(scr_stat *scp, int n, int tail);
  49 static __inline void    sc_term_left(scr_stat *scp, int n);
  50 static __inline void    sc_term_right(scr_stat *scp, int n);
  51 static __inline void    sc_term_up_scroll(scr_stat *scp, int n, int ch,
  52                                           int attr, int head, int tail);
  53 static __inline void    sc_term_down_scroll(scr_stat *scp, int n, int ch,
  54                                             int attr, int head, int tail);
  55 static __inline void    sc_term_clr_eos(scr_stat *scp, int n, int ch, int attr);
  56 static __inline void    sc_term_clr_eol(scr_stat *scp, int n, int ch, int attr);
  57 static __inline void    sc_term_tab(scr_stat *scp, int n);
  58 static __inline void    sc_term_backtab(scr_stat *scp, int n);
  59 static __inline void    sc_term_respond(scr_stat *scp, u_char *s);
  60 static __inline void    sc_term_gen_print(scr_stat *scp, u_char **buf, int *len,
  61                                           int attr);
  62 static __inline void    sc_term_gen_scroll(scr_stat *scp, int ch, int attr);
  63
  64 static __inline void
  65 sc_term_ins_line(scr_stat *scp, int y, int n, int ch, int attr, int tail)
  66 {
  67         if (tail <= 0)
  68                 tail = scp->ysize;
  69         if (n < 1)
  70                 n = 1;
  71         if (n > tail - y)
  72                 n = tail - y;
  73         sc_vtb_ins(&scp->vtb, y*scp->xsize, n*scp->xsize, ch, attr);
  74         mark_for_update(scp, y*scp->xsize);
  75         mark_for_update(scp, scp->xsize*tail - 1);
  76 }
  77
  78 static __inline void
  79 sc_term_del_line(scr_stat *scp, int y, int n, int ch, int attr, int tail)
  80 {
  81         if (tail <= 0)
  82                 tail = scp->ysize;
  83         if (n < 1)
  84                 n = 1;
  85         if (n > tail - y)
  86                 n = tail - y;
  87         sc_vtb_delete(&scp->vtb, y*scp->xsize, n*scp->xsize, ch, attr);
  88         mark_for_update(scp, y*scp->xsize);
  89         mark_for_update(scp, scp->xsize*tail - 1);
  90 }
  91
  92 static __inline void
  93 sc_term_ins_char(scr_stat *scp, int n, int ch, int attr)
  94 {
  95         int count;
  96
  97         if (n < 1)
  98                 n = 1;
  99         if (n > scp->xsize - scp->xpos)
 100                 n = scp->xsize - scp->xpos;
 101         count = scp->xsize - (scp->xpos + n);
 102         sc_vtb_move(&scp->vtb, scp->cursor_pos, scp->cursor_pos + n, count);
 103         sc_vtb_erase(&scp->vtb, scp->cursor_pos, n, ch, attr);
 104         mark_for_update(scp, scp->cursor_pos);
 105         mark_for_update(scp, scp->cursor_pos + n + count - 1);
 106 }
 107
 108 static __inline void
 109 sc_term_del_char(scr_stat *scp, int n, int ch, int attr)
 110 {
 111         int count;
 112
 113         if (n < 1)
 114                 n = 1;
 115         if (n > scp->xsize - scp->xpos)
 116                 n = scp->xsize - scp->xpos;
 117         count = scp->xsize - (scp->xpos + n);
 118         sc_vtb_move(&scp->vtb, scp->cursor_pos + n, scp->cursor_pos, count);
 119         sc_vtb_erase(&scp->vtb, scp->cursor_pos + count, n, ch, attr);
 120         mark_for_update(scp, scp->cursor_pos);
 121         mark_for_update(scp, scp->cursor_pos + n + count - 1);
 122 }
 123
 124 static __inline void
 125 sc_term_col(scr_stat *scp, int n)
 126 {
 127         if (n < 1)
 128                 n = 1;
 129         sc_move_cursor(scp, n - 1, scp->ypos);
 130 }
 131
 132 static __inline void
 133 sc_term_row(scr_stat *scp, int n)
 134 {
 135         if (n < 1)
 136                 n = 1;
 137         sc_move_cursor(scp, scp->xpos, n - 1);
 138 }
 139
 140 static __inline void
 141 sc_term_up(scr_stat *scp, int n, int head)
 142 {
 143         if (n < 1)
 144                 n = 1;
 145         n = imin(n, scp->ypos - head);
 146         if (n <= 0)
 147                 return;
 148         sc_move_cursor(scp, scp->xpos, scp->ypos - n);
 149 }
 150
 151 static __inline void
 152 sc_term_down(scr_stat *scp, int n, int tail)
 153 {
 154         if (tail <= 0)
 155                 tail = scp->ysize;
 156         if (n < 1)
 157                 n = 1;
 158         n = imin(n, tail - scp->ypos - 1);
 159         if (n <= 0)
 160                 return;
 161         sc_move_cursor(scp, scp->xpos, scp->ypos + n);
 162 }
 163
 164 static __inline void
 165 sc_term_left(scr_stat *scp, int n)
 166 {
 167         if (n < 1)
 168                 n = 1;
 169         sc_move_cursor(scp, scp->xpos - n, scp->ypos);
 170 }
 171
 172 static __inline void
 173 sc_term_right(scr_stat *scp, int n)
 174 {
 175         if (n < 1)
 176                 n = 1;
 177         sc_move_cursor(scp, scp->xpos + n, scp->ypos);
 178 }
 179
 180 static __inline void
 181 sc_term_up_scroll(scr_stat *scp, int n, int ch, int attr, int head, int tail)
 182 {
 183         if (tail <= 0)
 184                 tail = scp->ysize;
 185         if (n < 1)
 186                 n = 1;
 187         if (n <= scp->ypos - head) {
 188                 sc_move_cursor(scp, scp->xpos, scp->ypos - n);
 189         } else {
 190                 sc_term_ins_line(scp, head, n - (scp->ypos - head),
 191                                  ch, attr, tail);
 192                 sc_move_cursor(scp, scp->xpos, head);
 193         }
 194 }
 195
 196 static __inline void
 197 sc_term_down_scroll(scr_stat *scp, int n, int ch, int attr, int head, int tail)
 198 {
 199         if (tail <= 0)
 200                 tail = scp->ysize;
 201         if (n < 1)
 202                 n = 1;
 203         if (n < tail - scp->ypos) {
 204                 sc_move_cursor(scp, scp->xpos, scp->ypos + n);
 205         } else {
 206                 sc_term_del_line(scp, head, n - (tail - scp->ypos) + 1,
 207                                  ch, attr, tail);
 208                 sc_move_cursor(scp, scp->xpos, tail - 1);
 209         }
 210 }
 211
 212 static __inline void
 213 sc_term_clr_eos(scr_stat *scp, int n, int ch, int attr)
 214 {
 215         switch (n) {
 216         case 0: /* clear form cursor to end of display */
 217                 sc_vtb_erase(&scp->vtb, scp->cursor_pos,
 218                              scp->xsize*scp->ysize - scp->cursor_pos,
 219                              ch, attr);
 220                 mark_for_update(scp, scp->cursor_pos);
 221                 mark_for_update(scp, scp->xsize*scp->ysize - 1);
 222                 sc_remove_cutmarking(scp);
 223                 break;
 224         case 1: /* clear from beginning of display to cursor */
 225                 sc_vtb_erase(&scp->vtb, 0, scp->cursor_pos + 1, ch, attr);
 226                 mark_for_update(scp, 0);
 227                 mark_for_update(scp, scp->cursor_pos);
 228                 sc_remove_cutmarking(scp);
 229                 break;
 230         case 2: /* clear entire display */
 231                 sc_vtb_erase(&scp->vtb, 0, scp->xsize*scp->ysize, ch, attr);
 232                 mark_for_update(scp, 0);
 233                 mark_for_update(scp, scp->xsize*scp->ysize - 1);
 234                 sc_remove_cutmarking(scp);
 235                 break;
 236         }
 237 }
 238
 239 static __inline void
 240 sc_term_clr_eol(scr_stat *scp, int n, int ch, int attr)
 241 {
 242         switch (n) {
 243         case 0: /* clear form cursor to end of line */
 244                 sc_vtb_erase(&scp->vtb, scp->cursor_pos,
 245                              scp->xsize - scp->xpos, ch, attr);
 246                 mark_for_update(scp, scp->cursor_pos);
 247                 mark_for_update(scp, scp->cursor_pos +
 248                                 scp->xsize - 1 - scp->xpos);
 249                 break;
 250         case 1: /* clear from beginning of line to cursor */
 251                 sc_vtb_erase(&scp->vtb, scp->cursor_pos - scp->xpos,
 252                              scp->xpos + 1, ch, attr);
 253                 mark_for_update(scp, scp->ypos*scp->xsize);
 254                 mark_for_update(scp, scp->cursor_pos);
 255                 break;
 256         case 2: /* clear entire line */
 257                 sc_vtb_erase(&scp->vtb, scp->cursor_pos - scp->xpos,
 258                              scp->xsize, ch, attr);
 259                 mark_for_update(scp, scp->ypos*scp->xsize);
 260                 mark_for_update(scp, (scp->ypos + 1)*scp->xsize - 1);
 261                 break;
 262         }
 263 }
 264
 265 static __inline void
 266 sc_term_tab(scr_stat *scp, int n)
 267 {
 268         int i;
 269
 270         if (n < 1)
 271                 n = 1;
 272         i = (scp->xpos & ~7) + 8*n;
 273         if (i >= scp->xsize) {
 274                 if (scp->ypos >= scp->ysize - 1) {
 275                         scp->xpos = 0;
 276                         scp->ypos++;
 277                         scp->cursor_pos = scp->ypos*scp->xsize;
 278                 } else
 279                         sc_move_cursor(scp, 0, scp->ypos + 1);
 280         } else
 281                 sc_move_cursor(scp, i, scp->ypos);
 282 }
 283
 284 static __inline void
 285 sc_term_backtab(scr_stat *scp, int n)
 286 {
 287         int i;
 288
 289         if (n < 1)
 290                 n = 1;
 291         if ((i = scp->xpos & ~7) == scp->xpos)
 292                 i -= 8*n;
 293         else
 294                 i -= 8*(n - 1);
 295         if (i < 0)
 296                 i = 0;
 297         sc_move_cursor(scp, i, scp->ypos);
 298 }
 299
 300 static __inline void
 301 sc_term_respond(scr_stat *scp, u_char *s)
 302 {
 303         sc_paste(scp, s, strlen(s));    /* XXX: not correct, don't use rmap */
 304 }
 305
 306 static __inline void
 307 sc_term_gen_print(scr_stat *scp, u_char **buf, int *len, int attr)
 308 {
 309         uint16_t *p;
 310         u_char *ptr;
 311         u_char *map;
 312         int cnt;
 313         int l;
 314         int i;
 315
 316         ptr = *buf;
 317         l = *len;
 318
 319         if (PRINTABLE(*ptr)) {
 320                 p = scp->vtb.vtb_buffer + scp->cursor_pos;
 321                 map = scp->sc->scr_map;
 322
 323                 cnt = imin(l, scp->xsize - scp->xpos);
 324                 i = cnt;
 325                 do {
 326                         p = sc_vtb_putchar(&scp->vtb, p, map[*ptr], attr);
 327                         ++ptr;
 328                         --i;
 329                 } while ((i > 0) && PRINTABLE(*ptr));
 330
 331                 l -= cnt - i;
 332                 mark_for_update(scp, scp->cursor_pos);
 333                 scp->cursor_pos += cnt - i;
 334                 mark_for_update(scp, scp->cursor_pos - 1);
 335                 scp->xpos += cnt - i;
 336
 337                 if (scp->xpos >= scp->xsize) {
 338                         scp->xpos = 0;
 339                         scp->ypos++;
 340                         /* we may have to scroll the screen */
 341                 }
 342         } else {
 343                 switch(*ptr) {
 344                 case 0x07:
 345                         sc_bell(scp, scp->bell_pitch, scp->bell_duration);
 346                         break;
 347
 348                 case 0x08:      /* non-destructive backspace */
 349                         /* XXX */
 350                         if (scp->cursor_pos > 0) {
 351 #if 0
 352                                 mark_for_update(scp, scp->cursor_pos);
 353                                 scp->cursor_pos--;
 354                                 mark_for_update(scp, scp->cursor_pos);
 355 #else
 356                                 scp->cursor_pos--;
 357 #endif
 358                                 if (scp->xpos > 0) {
 359                                         scp->xpos--;
 360                                 } else {
 361                                         scp->xpos += scp->xsize - 1;
 362                                         scp->ypos--;
 363                                 }
 364                         }
 365                         break;
 366
 367                 case 0x09:      /* non-destructive tab */
 368                         sc_term_tab(scp, 1);
 369                         /* we may have to scroll the screen */
 370 #if 0
 371                         mark_for_update(scp, scp->cursor_pos);
 372                         scp->cursor_pos += (8 - scp->xpos % 8u);
 373                         mark_for_update(scp, scp->cursor_pos);
 374                         scp->xpos += (8 - scp->xpos % 8u);
 375                         if (scp->xpos >= scp->xsize) {
 376                                 scp->xpos = 0;
 377                                 scp->ypos++;
 378                         }
 379 #endif
 380                         break;
 381
 382                 case 0x0a:      /* newline, same pos */
 383 #if 0
 384                         mark_for_update(scp, scp->cursor_pos);
 385                         scp->cursor_pos += scp->xsize;
 386                         mark_for_update(scp, scp->cursor_pos);
 387 #else
 388                         scp->cursor_pos += scp->xsize;
 389                         /* we may have to scroll the screen */
 390 #endif
 391                         scp->ypos++;
 392                         break;
 393
 394                 case 0x0c:      /* form feed, clears screen */
 395                         sc_clear_screen(scp);
 396                         break;
 397
 398                 case 0x0d:      /* return, return to pos 0 */
 399 #if 0
 400                         mark_for_update(scp, scp->cursor_pos);
 401                         scp->cursor_pos -= scp->xpos;
 402                         mark_for_update(scp, scp->cursor_pos);
 403 #else
 404                         scp->cursor_pos -= scp->xpos;
 405 #endif
 406                         scp->xpos = 0;
 407                         break;
 408                 }
 409                 ptr++; l--;
 410         }
 411
 412         *buf = ptr;
 413         *len = l;
 414 }
 415
 416 static __inline void
 417 sc_term_gen_scroll(scr_stat *scp, int ch, int attr)
 418 {
 419         /* do we have to scroll ?? */
 420         if (scp->cursor_pos >= scp->ysize*scp->xsize) {
 421                 sc_remove_cutmarking(scp);              /* XXX */
 422 #ifndef SC_NO_HISTORY
 423                 if (scp->history != NULL)
 424                         sc_hist_save_one_line(scp, 0);  /* XXX */
 425 #endif
 426                 sc_vtb_delete(&scp->vtb, 0, scp->xsize, ch, attr);
 427                 scp->cursor_pos -= scp->xsize;
 428                 scp->ypos--;
 429                 mark_all(scp);
 430         }
 431 }
 432
 433 #endif /* _DEV_SYSCONS_SCTERMVAR_H_ */