| 1 | /* MS-DOS specific C utilities. -*- coding: raw-text -*- |
| 2 | Copyright (C) 1993, 1994, 1995, 1996, 1997, 1999, 2000, 2001, 2002, |
| 3 | 2003, 2004, 2005, 2006, 2007, 2008 |
| 4 | Free Software Foundation, Inc. |
| 5 | |
| 6 | This file is part of GNU Emacs. |
| 7 | |
| 8 | GNU Emacs is free software: you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation, either version 3 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | GNU Emacs is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
| 20 | |
| 21 | /* Contributed by Morten Welinder */ |
| 22 | /* New display, keyboard, and mouse control by Kim F. Storm */ |
| 23 | |
| 24 | /* Note: some of the stuff here was taken from end of sysdep.c in demacs. */ |
| 25 | |
| 26 | #include <config.h> |
| 27 | |
| 28 | #ifdef MSDOS |
| 29 | #include "lisp.h" |
| 30 | #include <stdio.h> |
| 31 | #include <stdlib.h> |
| 32 | #include <time.h> |
| 33 | #include <sys/param.h> |
| 34 | #include <sys/time.h> |
| 35 | #include <dos.h> |
| 36 | #include <errno.h> |
| 37 | #include <string.h> /* for bzero and string functions */ |
| 38 | #include <sys/stat.h> /* for _fixpath */ |
| 39 | #include <unistd.h> /* for chdir, dup, dup2, etc. */ |
| 40 | #include <dir.h> /* for getdisk */ |
| 41 | #if __DJGPP__ >= 2 |
| 42 | #pragma pack(0) /* dir.h does a pack(4), which isn't GCC's default */ |
| 43 | #include <fcntl.h> |
| 44 | #include <io.h> /* for setmode */ |
| 45 | #include <dpmi.h> /* for __dpmi_xxx stuff */ |
| 46 | #include <sys/farptr.h> /* for _farsetsel, _farnspokeb */ |
| 47 | #include <libc/dosio.h> /* for _USE_LFN */ |
| 48 | #include <conio.h> /* for cputs */ |
| 49 | #endif |
| 50 | |
| 51 | #include "msdos.h" |
| 52 | #include "systime.h" |
| 53 | #include "frame.h" |
| 54 | #include "termhooks.h" |
| 55 | #include "termchar.h" |
| 56 | #include "dispextern.h" |
| 57 | #include "dosfns.h" |
| 58 | #include "termopts.h" |
| 59 | #include "character.h" |
| 60 | #include "coding.h" |
| 61 | #include "disptab.h" |
| 62 | #include "window.h" |
| 63 | #include "buffer.h" |
| 64 | #include "commands.h" |
| 65 | #include "blockinput.h" |
| 66 | #include "keyboard.h" |
| 67 | #include "intervals.h" |
| 68 | #include <go32.h> |
| 69 | #include <pc.h> |
| 70 | #include <ctype.h> |
| 71 | /* #include <process.h> */ |
| 72 | /* Damn that local process.h! Instead we can define P_WAIT ourselves. */ |
| 73 | #define P_WAIT 1 |
| 74 | |
| 75 | #ifndef _USE_LFN |
| 76 | #define _USE_LFN 0 |
| 77 | #endif |
| 78 | |
| 79 | #ifndef _dos_ds |
| 80 | #define _dos_ds _go32_info_block.selector_for_linear_memory |
| 81 | #endif |
| 82 | |
| 83 | #if __DJGPP__ > 1 |
| 84 | |
| 85 | #include <signal.h> |
| 86 | #include "syssignal.h" |
| 87 | |
| 88 | #ifndef SYSTEM_MALLOC |
| 89 | |
| 90 | #ifdef GNU_MALLOC |
| 91 | |
| 92 | /* If other `malloc' than ours is used, force our `sbrk' behave like |
| 93 | Unix programs expect (resize memory blocks to keep them contiguous). |
| 94 | If `sbrk' from `ralloc.c' is NOT used, also zero-out sbrk'ed memory, |
| 95 | because that's what `gmalloc' expects to get. */ |
| 96 | #include <crt0.h> |
| 97 | |
| 98 | #ifdef REL_ALLOC |
| 99 | int _crt0_startup_flags = _CRT0_FLAG_UNIX_SBRK; |
| 100 | #else /* not REL_ALLOC */ |
| 101 | int _crt0_startup_flags = (_CRT0_FLAG_UNIX_SBRK | _CRT0_FLAG_FILL_SBRK_MEMORY); |
| 102 | #endif /* not REL_ALLOC */ |
| 103 | #endif /* GNU_MALLOC */ |
| 104 | |
| 105 | #endif /* not SYSTEM_MALLOC */ |
| 106 | #endif /* __DJGPP__ > 1 */ |
| 107 | |
| 108 | static unsigned long |
| 109 | event_timestamp () |
| 110 | { |
| 111 | struct time t; |
| 112 | unsigned long s; |
| 113 | |
| 114 | gettime (&t); |
| 115 | s = t.ti_min; |
| 116 | s *= 60; |
| 117 | s += t.ti_sec; |
| 118 | s *= 1000; |
| 119 | s += t.ti_hund * 10; |
| 120 | |
| 121 | return s; |
| 122 | } |
| 123 | |
| 124 | \f |
| 125 | /* ------------------------ Mouse control --------------------------- |
| 126 | * |
| 127 | * Coordinates are in screen positions and zero based. |
| 128 | * Mouse buttons are numbered from left to right and also zero based. |
| 129 | */ |
| 130 | |
| 131 | /* This used to be in termhooks.h, but mainstream Emacs code no longer |
| 132 | uses it, and it was removed... */ |
| 133 | #define NUM_MOUSE_BUTTONS (5) |
| 134 | |
| 135 | int have_mouse; /* 0: no, 1: enabled, -1: disabled */ |
| 136 | static int mouse_visible; |
| 137 | |
| 138 | static int mouse_last_x; |
| 139 | static int mouse_last_y; |
| 140 | |
| 141 | static int mouse_button_translate[NUM_MOUSE_BUTTONS]; |
| 142 | static int mouse_button_count; |
| 143 | |
| 144 | void |
| 145 | mouse_on () |
| 146 | { |
| 147 | union REGS regs; |
| 148 | |
| 149 | if (have_mouse > 0 && !mouse_visible) |
| 150 | { |
| 151 | struct tty_display_info *tty = CURTTY (); |
| 152 | |
| 153 | if (tty->termscript) |
| 154 | fprintf (tty->termscript, "<M_ON>"); |
| 155 | regs.x.ax = 0x0001; |
| 156 | int86 (0x33, ®s, ®s); |
| 157 | mouse_visible = 1; |
| 158 | } |
| 159 | } |
| 160 | |
| 161 | void |
| 162 | mouse_off () |
| 163 | { |
| 164 | union REGS regs; |
| 165 | |
| 166 | if (have_mouse > 0 && mouse_visible) |
| 167 | { |
| 168 | struct tty_display_info *tty = CURTTY (); |
| 169 | |
| 170 | if (tty->termscript) |
| 171 | fprintf (tty->termscript, "<M_OFF>"); |
| 172 | regs.x.ax = 0x0002; |
| 173 | int86 (0x33, ®s, ®s); |
| 174 | mouse_visible = 0; |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | static void |
| 179 | mouse_setup_buttons (int n_buttons) |
| 180 | { |
| 181 | if (n_buttons == 3) |
| 182 | { |
| 183 | mouse_button_count = 3; |
| 184 | mouse_button_translate[0] = 0; /* Left */ |
| 185 | mouse_button_translate[1] = 2; /* Middle */ |
| 186 | mouse_button_translate[2] = 1; /* Right */ |
| 187 | } |
| 188 | else /* two, what else? */ |
| 189 | { |
| 190 | mouse_button_count = 2; |
| 191 | mouse_button_translate[0] = 0; |
| 192 | mouse_button_translate[1] = 1; |
| 193 | } |
| 194 | } |
| 195 | |
| 196 | DEFUN ("msdos-set-mouse-buttons", Fmsdos_set_mouse_buttons, Smsdos_set_mouse_buttons, |
| 197 | 1, 1, "NSet number of mouse buttons to: ", |
| 198 | doc: /* Set the number of mouse buttons to use by Emacs. |
| 199 | This is useful with mice that report the number of buttons inconsistently, |
| 200 | e.g., if the number of buttons is reported as 3, but Emacs only sees 2 of |
| 201 | them. This happens with wheeled mice on Windows 9X, for example. */) |
| 202 | (nbuttons) |
| 203 | Lisp_Object nbuttons; |
| 204 | { |
| 205 | int n; |
| 206 | |
| 207 | CHECK_NUMBER (nbuttons); |
| 208 | n = XINT (nbuttons); |
| 209 | if (n < 2 || n > 3) |
| 210 | xsignal2 (Qargs_out_of_range, |
| 211 | build_string ("only 2 or 3 mouse buttons are supported"), |
| 212 | nbuttons); |
| 213 | mouse_setup_buttons (n); |
| 214 | return Qnil; |
| 215 | } |
| 216 | |
| 217 | static void |
| 218 | mouse_get_xy (int *x, int *y) |
| 219 | { |
| 220 | union REGS regs; |
| 221 | |
| 222 | regs.x.ax = 0x0003; |
| 223 | int86 (0x33, ®s, ®s); |
| 224 | *x = regs.x.cx / 8; |
| 225 | *y = regs.x.dx / 8; |
| 226 | } |
| 227 | |
| 228 | void |
| 229 | mouse_moveto (x, y) |
| 230 | int x, y; |
| 231 | { |
| 232 | union REGS regs; |
| 233 | struct tty_display_info *tty = CURTTY (); |
| 234 | |
| 235 | if (tty->termscript) |
| 236 | fprintf (tty->termscript, "<M_XY=%dx%d>", x, y); |
| 237 | regs.x.ax = 0x0004; |
| 238 | mouse_last_x = regs.x.cx = x * 8; |
| 239 | mouse_last_y = regs.x.dx = y * 8; |
| 240 | int86 (0x33, ®s, ®s); |
| 241 | } |
| 242 | |
| 243 | static int |
| 244 | mouse_pressed (b, xp, yp) |
| 245 | int b, *xp, *yp; |
| 246 | { |
| 247 | union REGS regs; |
| 248 | |
| 249 | if (b >= mouse_button_count) |
| 250 | return 0; |
| 251 | regs.x.ax = 0x0005; |
| 252 | regs.x.bx = mouse_button_translate[b]; |
| 253 | int86 (0x33, ®s, ®s); |
| 254 | if (regs.x.bx) |
| 255 | *xp = regs.x.cx / 8, *yp = regs.x.dx / 8; |
| 256 | return (regs.x.bx != 0); |
| 257 | } |
| 258 | |
| 259 | static int |
| 260 | mouse_released (b, xp, yp) |
| 261 | int b, *xp, *yp; |
| 262 | { |
| 263 | union REGS regs; |
| 264 | |
| 265 | if (b >= mouse_button_count) |
| 266 | return 0; |
| 267 | regs.x.ax = 0x0006; |
| 268 | regs.x.bx = mouse_button_translate[b]; |
| 269 | int86 (0x33, ®s, ®s); |
| 270 | if (regs.x.bx) |
| 271 | *xp = regs.x.cx / 8, *yp = regs.x.dx / 8; |
| 272 | return (regs.x.bx != 0); |
| 273 | } |
| 274 | |
| 275 | static int |
| 276 | mouse_button_depressed (b, xp, yp) |
| 277 | int b, *xp, *yp; |
| 278 | { |
| 279 | union REGS regs; |
| 280 | |
| 281 | if (b >= mouse_button_count) |
| 282 | return 0; |
| 283 | regs.x.ax = 0x0003; |
| 284 | int86 (0x33, ®s, ®s); |
| 285 | if ((regs.x.bx & (1 << mouse_button_translate[b])) != 0) |
| 286 | { |
| 287 | *xp = regs.x.cx / 8; |
| 288 | *yp = regs.x.dx / 8; |
| 289 | return 1; |
| 290 | } |
| 291 | return 0; |
| 292 | } |
| 293 | |
| 294 | void |
| 295 | mouse_get_pos (f, insist, bar_window, part, x, y, time) |
| 296 | FRAME_PTR *f; |
| 297 | int insist; |
| 298 | Lisp_Object *bar_window, *x, *y; |
| 299 | enum scroll_bar_part *part; |
| 300 | unsigned long *time; |
| 301 | { |
| 302 | int ix, iy; |
| 303 | Lisp_Object frame, tail; |
| 304 | |
| 305 | /* Clear the mouse-moved flag for every frame on this display. */ |
| 306 | FOR_EACH_FRAME (tail, frame) |
| 307 | XFRAME (frame)->mouse_moved = 0; |
| 308 | |
| 309 | *f = SELECTED_FRAME(); |
| 310 | *bar_window = Qnil; |
| 311 | mouse_get_xy (&ix, &iy); |
| 312 | *time = event_timestamp (); |
| 313 | *x = make_number (mouse_last_x = ix); |
| 314 | *y = make_number (mouse_last_y = iy); |
| 315 | } |
| 316 | |
| 317 | static void |
| 318 | mouse_check_moved () |
| 319 | { |
| 320 | int x, y; |
| 321 | |
| 322 | mouse_get_xy (&x, &y); |
| 323 | SELECTED_FRAME()->mouse_moved |= (x != mouse_last_x || y != mouse_last_y); |
| 324 | mouse_last_x = x; |
| 325 | mouse_last_y = y; |
| 326 | } |
| 327 | |
| 328 | /* Force the mouse driver to ``forget'' about any button clicks until |
| 329 | now. */ |
| 330 | static void |
| 331 | mouse_clear_clicks (void) |
| 332 | { |
| 333 | int b; |
| 334 | |
| 335 | for (b = 0; b < mouse_button_count; b++) |
| 336 | { |
| 337 | int dummy_x, dummy_y; |
| 338 | |
| 339 | (void) mouse_pressed (b, &dummy_x, &dummy_y); |
| 340 | (void) mouse_released (b, &dummy_x, &dummy_y); |
| 341 | } |
| 342 | } |
| 343 | |
| 344 | void |
| 345 | mouse_init () |
| 346 | { |
| 347 | union REGS regs; |
| 348 | struct tty_display_info *tty = CURTTY (); |
| 349 | |
| 350 | if (tty->termscript) |
| 351 | fprintf (tty->termscript, "<M_INIT>"); |
| 352 | |
| 353 | regs.x.ax = 0x0021; |
| 354 | int86 (0x33, ®s, ®s); |
| 355 | |
| 356 | /* Reset the mouse last press/release info. It seems that Windows |
| 357 | doesn't do that automatically when function 21h is called, which |
| 358 | causes Emacs to ``remember'' the click that switched focus to the |
| 359 | window just before Emacs was started from that window. */ |
| 360 | mouse_clear_clicks (); |
| 361 | |
| 362 | regs.x.ax = 0x0007; |
| 363 | regs.x.cx = 0; |
| 364 | regs.x.dx = 8 * (ScreenCols () - 1); |
| 365 | int86 (0x33, ®s, ®s); |
| 366 | |
| 367 | regs.x.ax = 0x0008; |
| 368 | regs.x.cx = 0; |
| 369 | regs.x.dx = 8 * (ScreenRows () - 1); |
| 370 | int86 (0x33, ®s, ®s); |
| 371 | |
| 372 | mouse_moveto (0, 0); |
| 373 | mouse_visible = 0; |
| 374 | } |
| 375 | \f |
| 376 | /* ------------------------- Screen control ---------------------- |
| 377 | * |
| 378 | */ |
| 379 | |
| 380 | static int internal_terminal = 0; |
| 381 | |
| 382 | #ifndef HAVE_X_WINDOWS |
| 383 | extern unsigned char ScreenAttrib; |
| 384 | static int screen_face; |
| 385 | |
| 386 | static int screen_size_X; |
| 387 | static int screen_size_Y; |
| 388 | static int screen_size; |
| 389 | |
| 390 | static int current_pos_X; |
| 391 | static int current_pos_Y; |
| 392 | static int new_pos_X; |
| 393 | static int new_pos_Y; |
| 394 | |
| 395 | static void *startup_screen_buffer; |
| 396 | static int startup_screen_size_X; |
| 397 | static int startup_screen_size_Y; |
| 398 | static int startup_pos_X; |
| 399 | static int startup_pos_Y; |
| 400 | static unsigned char startup_screen_attrib; |
| 401 | |
| 402 | static clock_t startup_time; |
| 403 | |
| 404 | static int term_setup_done; |
| 405 | |
| 406 | static unsigned short outside_cursor; |
| 407 | |
| 408 | /* Similar to the_only_frame. */ |
| 409 | struct tty_display_info the_only_display_info; |
| 410 | |
| 411 | /* Support for DOS/V (allows Japanese characters to be displayed on |
| 412 | standard, non-Japanese, ATs). Only supported for DJGPP v2 and later. */ |
| 413 | |
| 414 | /* Holds the address of the text-mode screen buffer. */ |
| 415 | static unsigned long screen_old_address = 0; |
| 416 | /* Segment and offset of the virtual screen. If 0, DOS/V is NOT loaded. */ |
| 417 | static unsigned short screen_virtual_segment = 0; |
| 418 | static unsigned short screen_virtual_offset = 0; |
| 419 | /* A flag to control how to display unibyte 8-bit characters. */ |
| 420 | extern int unibyte_display_via_language_environment; |
| 421 | |
| 422 | extern Lisp_Object Qcursor_type; |
| 423 | extern Lisp_Object Qbar, Qhbar; |
| 424 | |
| 425 | /* The screen colors of the current frame, which serve as the default |
| 426 | colors for newly-created frames. */ |
| 427 | static int initial_screen_colors[2]; |
| 428 | |
| 429 | #if __DJGPP__ > 1 |
| 430 | /* Update the screen from a part of relocated DOS/V screen buffer which |
| 431 | begins at OFFSET and includes COUNT characters. */ |
| 432 | static void |
| 433 | dosv_refresh_virtual_screen (int offset, int count) |
| 434 | { |
| 435 | __dpmi_regs regs; |
| 436 | |
| 437 | if (offset < 0 || count < 0) /* paranoia; invalid values crash DOS/V */ |
| 438 | return; |
| 439 | |
| 440 | regs.h.ah = 0xff; /* update relocated screen */ |
| 441 | regs.x.es = screen_virtual_segment; |
| 442 | regs.x.di = screen_virtual_offset + offset; |
| 443 | regs.x.cx = count; |
| 444 | __dpmi_int (0x10, ®s); |
| 445 | } |
| 446 | #endif |
| 447 | |
| 448 | static void |
| 449 | dos_direct_output (y, x, buf, len) |
| 450 | int x, y; |
| 451 | char *buf; |
| 452 | int len; |
| 453 | { |
| 454 | int t0 = 2 * (x + y * screen_size_X); |
| 455 | int t = t0 + (int) ScreenPrimary; |
| 456 | int l0 = len; |
| 457 | |
| 458 | #if (__DJGPP__ < 2) |
| 459 | while (--len >= 0) { |
| 460 | dosmemput (buf++, 1, t); |
| 461 | t += 2; |
| 462 | } |
| 463 | #else |
| 464 | /* This is faster. */ |
| 465 | for (_farsetsel (_dos_ds); --len >= 0; t += 2, buf++) |
| 466 | _farnspokeb (t, *buf); |
| 467 | |
| 468 | if (screen_virtual_segment) |
| 469 | dosv_refresh_virtual_screen (t0, l0); |
| 470 | #endif |
| 471 | } |
| 472 | #endif |
| 473 | |
| 474 | /* Flash the screen as a substitute for BEEPs. */ |
| 475 | |
| 476 | #if (__DJGPP__ < 2) |
| 477 | static void |
| 478 | do_visible_bell (xorattr) |
| 479 | unsigned char xorattr; |
| 480 | { |
| 481 | asm volatile |
| 482 | (" movb $1,%%dl \n\ |
| 483 | visible_bell_0: \n\ |
| 484 | movl _ScreenPrimary,%%eax \n\ |
| 485 | call dosmemsetup \n\ |
| 486 | movl %%eax,%%ebx \n\ |
| 487 | movl %1,%%ecx \n\ |
| 488 | movb %0,%%al \n\ |
| 489 | incl %%ebx \n\ |
| 490 | visible_bell_1: \n\ |
| 491 | xorb %%al,%%gs:(%%ebx) \n\ |
| 492 | addl $2,%%ebx \n\ |
| 493 | decl %%ecx \n\ |
| 494 | jne visible_bell_1 \n\ |
| 495 | decb %%dl \n\ |
| 496 | jne visible_bell_3 \n\ |
| 497 | visible_bell_2: \n\ |
| 498 | movzwl %%ax,%%eax \n\ |
| 499 | movzwl %%ax,%%eax \n\ |
| 500 | movzwl %%ax,%%eax \n\ |
| 501 | movzwl %%ax,%%eax \n\ |
| 502 | decw %%cx \n\ |
| 503 | jne visible_bell_2 \n\ |
| 504 | jmp visible_bell_0 \n\ |
| 505 | visible_bell_3:" |
| 506 | : /* no output */ |
| 507 | : "m" (xorattr), "g" (screen_size) |
| 508 | : "%eax", "%ebx", /* "%gs",*/ "%ecx", "%edx"); |
| 509 | } |
| 510 | |
| 511 | static void |
| 512 | ScreenVisualBell (void) |
| 513 | { |
| 514 | /* This creates an xor-mask that will swap the default fore- and |
| 515 | background colors. */ |
| 516 | do_visible_bell (((FRAME_FOREGROUND_PIXEL (SELECTED_FRAME ()) |
| 517 | ^ FRAME_BACKGROUND_PIXEL (SELECTED_FRAME ())) |
| 518 | * 0x11) & 0x7f); |
| 519 | } |
| 520 | #endif |
| 521 | |
| 522 | #ifndef HAVE_X_WINDOWS |
| 523 | |
| 524 | static int blink_bit = -1; /* the state of the blink bit at startup */ |
| 525 | |
| 526 | /* Enable bright background colors. */ |
| 527 | static void |
| 528 | bright_bg (void) |
| 529 | { |
| 530 | union REGS regs; |
| 531 | |
| 532 | /* Remember the original state of the blink/bright-background bit. |
| 533 | It is stored at 0040:0065h in the BIOS data area. */ |
| 534 | if (blink_bit == -1) |
| 535 | blink_bit = (_farpeekb (_dos_ds, 0x465) & 0x20) == 0x20; |
| 536 | |
| 537 | regs.h.bl = 0; |
| 538 | regs.x.ax = 0x1003; |
| 539 | int86 (0x10, ®s, ®s); |
| 540 | } |
| 541 | |
| 542 | /* Disable bright background colors (and enable blinking) if we found |
| 543 | the video system in that state at startup. */ |
| 544 | static void |
| 545 | maybe_enable_blinking (void) |
| 546 | { |
| 547 | if (blink_bit == 1) |
| 548 | { |
| 549 | union REGS regs; |
| 550 | |
| 551 | regs.h.bl = 1; |
| 552 | regs.x.ax = 0x1003; |
| 553 | int86 (0x10, ®s, ®s); |
| 554 | } |
| 555 | } |
| 556 | |
| 557 | /* Return non-zero if the system has a VGA adapter. */ |
| 558 | static int |
| 559 | vga_installed (void) |
| 560 | { |
| 561 | union REGS regs; |
| 562 | |
| 563 | regs.x.ax = 0x1a00; |
| 564 | int86 (0x10, ®s, ®s); |
| 565 | if (regs.h.al == 0x1a && regs.h.bl > 5 && regs.h.bl < 13) |
| 566 | return 1; |
| 567 | return 0; |
| 568 | } |
| 569 | |
| 570 | /* Set the screen dimensions so that it can show no less than |
| 571 | ROWS x COLS frame. */ |
| 572 | |
| 573 | void |
| 574 | dos_set_window_size (rows, cols) |
| 575 | int *rows, *cols; |
| 576 | { |
| 577 | char video_name[30]; |
| 578 | union REGS regs; |
| 579 | Lisp_Object video_mode; |
| 580 | int video_mode_value, have_vga = 0; |
| 581 | int current_rows = ScreenRows (), current_cols = ScreenCols (); |
| 582 | |
| 583 | if (*rows == current_rows && *cols == current_cols) |
| 584 | return; |
| 585 | |
| 586 | mouse_off (); |
| 587 | have_vga = vga_installed (); |
| 588 | |
| 589 | /* If the user specified a special video mode for these dimensions, |
| 590 | use that mode. */ |
| 591 | sprintf (video_name, "screen-dimensions-%dx%d", *rows, *cols); |
| 592 | video_mode = XSYMBOL (Fintern_soft (build_string (video_name), |
| 593 | Qnil))-> value; |
| 594 | |
| 595 | if (INTEGERP (video_mode) |
| 596 | && (video_mode_value = XINT (video_mode)) > 0) |
| 597 | { |
| 598 | regs.x.ax = video_mode_value; |
| 599 | int86 (0x10, ®s, ®s); |
| 600 | |
| 601 | if (have_mouse) |
| 602 | { |
| 603 | /* Must hardware-reset the mouse, or else it won't update |
| 604 | its notion of screen dimensions for some non-standard |
| 605 | video modes. This is *painfully* slow... */ |
| 606 | regs.x.ax = 0; |
| 607 | int86 (0x33, ®s, ®s); |
| 608 | } |
| 609 | } |
| 610 | |
| 611 | /* Find one of the dimensions supported by standard EGA/VGA |
| 612 | which gives us at least the required dimensions. */ |
| 613 | |
| 614 | #if __DJGPP__ > 1 |
| 615 | |
| 616 | else |
| 617 | { |
| 618 | static struct { |
| 619 | int rows, need_vga; |
| 620 | } std_dimension[] = { |
| 621 | {25, 0}, |
| 622 | {28, 1}, |
| 623 | {35, 0}, |
| 624 | {40, 1}, |
| 625 | {43, 0}, |
| 626 | {50, 1} |
| 627 | }; |
| 628 | int i = 0; |
| 629 | |
| 630 | while (i < sizeof (std_dimension) / sizeof (std_dimension[0])) |
| 631 | { |
| 632 | if (std_dimension[i].need_vga <= have_vga |
| 633 | && std_dimension[i].rows >= *rows) |
| 634 | { |
| 635 | if (std_dimension[i].rows != current_rows |
| 636 | || *cols != current_cols) |
| 637 | _set_screen_lines (std_dimension[i].rows); |
| 638 | break; |
| 639 | } |
| 640 | i++; |
| 641 | } |
| 642 | } |
| 643 | |
| 644 | #else /* not __DJGPP__ > 1 */ |
| 645 | |
| 646 | else if (*rows <= 25) |
| 647 | { |
| 648 | if (current_rows != 25 || current_cols != 80) |
| 649 | { |
| 650 | regs.x.ax = 3; |
| 651 | int86 (0x10, ®s, ®s); |
| 652 | regs.x.ax = 0x1101; |
| 653 | regs.h.bl = 0; |
| 654 | int86 (0x10, ®s, ®s); |
| 655 | regs.x.ax = 0x1200; |
| 656 | regs.h.bl = 32; |
| 657 | int86 (0x10, ®s, ®s); |
| 658 | regs.x.ax = 3; |
| 659 | int86 (0x10, ®s, ®s); |
| 660 | } |
| 661 | } |
| 662 | else if (*rows <= 50) |
| 663 | if (have_vga && (current_rows != 50 || current_cols != 80) |
| 664 | || *rows <= 43 && (current_rows != 43 || current_cols != 80)) |
| 665 | { |
| 666 | regs.x.ax = 3; |
| 667 | int86 (0x10, ®s, ®s); |
| 668 | regs.x.ax = 0x1112; |
| 669 | regs.h.bl = 0; |
| 670 | int86 (0x10, ®s, ®s); |
| 671 | regs.x.ax = 0x1200; |
| 672 | regs.h.bl = 32; |
| 673 | int86 (0x10, ®s, ®s); |
| 674 | regs.x.ax = 0x0100; |
| 675 | regs.x.cx = 7; |
| 676 | int86 (0x10, ®s, ®s); |
| 677 | } |
| 678 | #endif /* not __DJGPP__ > 1 */ |
| 679 | |
| 680 | if (have_mouse) |
| 681 | { |
| 682 | mouse_init (); |
| 683 | mouse_on (); |
| 684 | } |
| 685 | |
| 686 | /* Tell the caller what dimensions have been REALLY set. */ |
| 687 | *rows = ScreenRows (); |
| 688 | *cols = ScreenCols (); |
| 689 | |
| 690 | /* Update Emacs' notion of screen dimensions. */ |
| 691 | screen_size_X = *cols; |
| 692 | screen_size_Y = *rows; |
| 693 | screen_size = *cols * *rows; |
| 694 | |
| 695 | #if __DJGPP__ > 1 |
| 696 | /* If the dimensions changed, the mouse highlight info is invalid. */ |
| 697 | if (current_rows != *rows || current_cols != *cols) |
| 698 | { |
| 699 | struct frame *f = SELECTED_FRAME(); |
| 700 | struct tty_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f); |
| 701 | Lisp_Object window = dpyinfo->mouse_face_window; |
| 702 | |
| 703 | if (! NILP (window) && XFRAME (XWINDOW (window)->frame) == f) |
| 704 | { |
| 705 | dpyinfo->mouse_face_beg_row = dpyinfo->mouse_face_beg_col = -1; |
| 706 | dpyinfo->mouse_face_end_row = dpyinfo->mouse_face_end_col = -1; |
| 707 | dpyinfo->mouse_face_window = Qnil; |
| 708 | } |
| 709 | } |
| 710 | #endif |
| 711 | |
| 712 | /* Enable bright background colors. */ |
| 713 | bright_bg (); |
| 714 | |
| 715 | /* FIXME: I'm not sure the above will run at all on DOS/V. But let's |
| 716 | be defensive anyway. */ |
| 717 | if (screen_virtual_segment) |
| 718 | dosv_refresh_virtual_screen (0, *cols * *rows); |
| 719 | } |
| 720 | |
| 721 | /* If we write a character in the position where the mouse is, |
| 722 | the mouse cursor may need to be refreshed. */ |
| 723 | |
| 724 | static void |
| 725 | mouse_off_maybe () |
| 726 | { |
| 727 | int x, y; |
| 728 | |
| 729 | if (!mouse_visible) |
| 730 | return; |
| 731 | |
| 732 | mouse_get_xy (&x, &y); |
| 733 | if (y != new_pos_Y || x < new_pos_X) |
| 734 | return; |
| 735 | |
| 736 | mouse_off (); |
| 737 | } |
| 738 | |
| 739 | #define DEFAULT_CURSOR_START (-1) |
| 740 | #define DEFAULT_CURSOR_WIDTH (-1) |
| 741 | #define BOX_CURSOR_WIDTH (-32) |
| 742 | |
| 743 | /* Set cursor to begin at scan line START_LINE in the character cell |
| 744 | and extend for WIDTH scan lines. Scan lines are counted from top |
| 745 | of the character cell, starting from zero. */ |
| 746 | static void |
| 747 | msdos_set_cursor_shape (struct frame *f, int start_line, int width) |
| 748 | { |
| 749 | #if __DJGPP__ > 1 |
| 750 | unsigned desired_cursor; |
| 751 | __dpmi_regs regs; |
| 752 | int max_line, top_line, bot_line; |
| 753 | struct tty_display_info *tty = FRAME_TTY (f); |
| 754 | |
| 755 | /* Avoid the costly BIOS call if F isn't the currently selected |
| 756 | frame. Allow for NULL as unconditionally meaning the selected |
| 757 | frame. */ |
| 758 | if (f && f != SELECTED_FRAME()) |
| 759 | return; |
| 760 | |
| 761 | if (tty->termscript) |
| 762 | fprintf (tty->termscript, "\nCURSOR SHAPE=(%d,%d)", start_line, width); |
| 763 | |
| 764 | /* The character cell size in scan lines is stored at 40:85 in the |
| 765 | BIOS data area. */ |
| 766 | max_line = _farpeekw (_dos_ds, 0x485) - 1; |
| 767 | switch (max_line) |
| 768 | { |
| 769 | default: /* this relies on CGA cursor emulation being ON! */ |
| 770 | case 7: |
| 771 | bot_line = 7; |
| 772 | break; |
| 773 | case 9: |
| 774 | bot_line = 9; |
| 775 | break; |
| 776 | case 13: |
| 777 | bot_line = 12; |
| 778 | break; |
| 779 | case 15: |
| 780 | bot_line = 14; |
| 781 | break; |
| 782 | } |
| 783 | |
| 784 | if (width < 0) |
| 785 | { |
| 786 | if (width == BOX_CURSOR_WIDTH) |
| 787 | { |
| 788 | top_line = 0; |
| 789 | bot_line = max_line; |
| 790 | } |
| 791 | else if (start_line != DEFAULT_CURSOR_START) |
| 792 | { |
| 793 | top_line = start_line; |
| 794 | bot_line = top_line - width - 1; |
| 795 | } |
| 796 | else if (width != DEFAULT_CURSOR_WIDTH) |
| 797 | { |
| 798 | top_line = 0; |
| 799 | bot_line = -1 - width; |
| 800 | } |
| 801 | else |
| 802 | top_line = bot_line + 1; |
| 803 | } |
| 804 | else if (width == 0) |
| 805 | { |
| 806 | /* [31, 0] seems to DTRT for all screen sizes. */ |
| 807 | top_line = 31; |
| 808 | bot_line = 0; |
| 809 | } |
| 810 | else /* WIDTH is positive */ |
| 811 | { |
| 812 | if (start_line != DEFAULT_CURSOR_START) |
| 813 | bot_line = start_line; |
| 814 | top_line = bot_line - (width - 1); |
| 815 | } |
| 816 | |
| 817 | /* If the current cursor shape is already what they want, we are |
| 818 | history here. */ |
| 819 | desired_cursor = ((top_line & 0x1f) << 8) | (bot_line & 0x1f); |
| 820 | if (desired_cursor == _farpeekw (_dos_ds, 0x460)) |
| 821 | return; |
| 822 | |
| 823 | regs.h.ah = 1; |
| 824 | regs.x.cx = desired_cursor; |
| 825 | __dpmi_int (0x10, ®s); |
| 826 | #endif /* __DJGPP__ > 1 */ |
| 827 | } |
| 828 | |
| 829 | static void |
| 830 | IT_set_cursor_type (struct frame *f, Lisp_Object cursor_type) |
| 831 | { |
| 832 | if (EQ (cursor_type, Qbar) || EQ (cursor_type, Qhbar)) |
| 833 | { |
| 834 | /* Just BAR means the normal EGA/VGA cursor. */ |
| 835 | msdos_set_cursor_shape (f, DEFAULT_CURSOR_START, DEFAULT_CURSOR_WIDTH); |
| 836 | } |
| 837 | else if (CONSP (cursor_type) |
| 838 | && (EQ (XCAR (cursor_type), Qbar) |
| 839 | || EQ (XCAR (cursor_type), Qhbar))) |
| 840 | { |
| 841 | Lisp_Object bar_parms = XCDR (cursor_type); |
| 842 | int width; |
| 843 | |
| 844 | if (INTEGERP (bar_parms)) |
| 845 | { |
| 846 | /* Feature: negative WIDTH means cursor at the top |
| 847 | of the character cell, zero means invisible cursor. */ |
| 848 | width = XINT (bar_parms); |
| 849 | msdos_set_cursor_shape (f, width >= 0 ? DEFAULT_CURSOR_START : 0, |
| 850 | width); |
| 851 | } |
| 852 | else if (CONSP (bar_parms) |
| 853 | && INTEGERP (XCAR (bar_parms)) |
| 854 | && INTEGERP (XCDR (bar_parms))) |
| 855 | { |
| 856 | int start_line = XINT (XCDR (bar_parms)); |
| 857 | |
| 858 | width = XINT (XCAR (bar_parms)); |
| 859 | msdos_set_cursor_shape (f, start_line, width); |
| 860 | } |
| 861 | } |
| 862 | else |
| 863 | { |
| 864 | /* Treat anything unknown as "box cursor". This includes nil, so |
| 865 | that a frame which doesn't specify a cursor type gets a box, |
| 866 | which is the default in Emacs. */ |
| 867 | msdos_set_cursor_shape (f, 0, BOX_CURSOR_WIDTH); |
| 868 | } |
| 869 | } |
| 870 | |
| 871 | static void |
| 872 | IT_ring_bell (struct frame *f) |
| 873 | { |
| 874 | if (visible_bell) |
| 875 | { |
| 876 | mouse_off (); |
| 877 | ScreenVisualBell (); |
| 878 | } |
| 879 | else |
| 880 | { |
| 881 | union REGS inregs, outregs; |
| 882 | inregs.h.ah = 2; |
| 883 | inregs.h.dl = 7; |
| 884 | intdos (&inregs, &outregs); |
| 885 | } |
| 886 | } |
| 887 | |
| 888 | /* Given a face id FACE, extract the face parameters to be used for |
| 889 | display until the face changes. The face parameters (actually, its |
| 890 | color) are used to construct the video attribute byte for each |
| 891 | glyph during the construction of the buffer that is then blitted to |
| 892 | the video RAM. */ |
| 893 | static void |
| 894 | IT_set_face (int face) |
| 895 | { |
| 896 | struct frame *sf = SELECTED_FRAME(); |
| 897 | struct face *fp = FACE_FROM_ID (sf, face); |
| 898 | struct face *dfp = FACE_FROM_ID (sf, DEFAULT_FACE_ID); |
| 899 | unsigned long fg, bg, dflt_fg, dflt_bg; |
| 900 | struct tty_display_info *tty = FRAME_TTY (sf); |
| 901 | |
| 902 | if (!fp) |
| 903 | { |
| 904 | fp = dfp; |
| 905 | /* The default face for the frame should always be realized and |
| 906 | cached. */ |
| 907 | if (!fp) |
| 908 | abort (); |
| 909 | } |
| 910 | screen_face = face; |
| 911 | fg = fp->foreground; |
| 912 | bg = fp->background; |
| 913 | dflt_fg = dfp->foreground; |
| 914 | dflt_bg = dfp->background; |
| 915 | |
| 916 | /* Don't use invalid colors. In particular, FACE_TTY_DEFAULT_* colors |
| 917 | mean use the colors of the default face. Note that we assume all |
| 918 | 16 colors to be available for the background, since Emacs switches |
| 919 | on this mode (and loses the blinking attribute) at startup. */ |
| 920 | if (fg == FACE_TTY_DEFAULT_COLOR || fg == FACE_TTY_DEFAULT_FG_COLOR) |
| 921 | fg = FRAME_FOREGROUND_PIXEL (sf); |
| 922 | else if (fg == FACE_TTY_DEFAULT_BG_COLOR) |
| 923 | fg = FRAME_BACKGROUND_PIXEL (sf); |
| 924 | if (bg == FACE_TTY_DEFAULT_COLOR || bg == FACE_TTY_DEFAULT_BG_COLOR) |
| 925 | bg = FRAME_BACKGROUND_PIXEL (sf); |
| 926 | else if (bg == FACE_TTY_DEFAULT_FG_COLOR) |
| 927 | bg = FRAME_FOREGROUND_PIXEL (sf); |
| 928 | |
| 929 | /* Make sure highlighted lines really stand out, come what may. */ |
| 930 | if (fp->tty_reverse_p && (fg == dflt_fg && bg == dflt_bg)) |
| 931 | { |
| 932 | unsigned long tem = fg; |
| 933 | |
| 934 | fg = bg; |
| 935 | bg = tem; |
| 936 | } |
| 937 | /* If the user requested inverse video, obey. */ |
| 938 | if (inverse_video) |
| 939 | { |
| 940 | unsigned long tem2 = fg; |
| 941 | |
| 942 | fg = bg; |
| 943 | bg = tem2; |
| 944 | } |
| 945 | if (tty->termscript) |
| 946 | fprintf (tty->termscript, "<FACE %d: %d/%d[FG:%d/BG:%d]>", face, |
| 947 | fp->foreground, fp->background, fg, bg); |
| 948 | if (fg >= 0 && fg < 16) |
| 949 | { |
| 950 | ScreenAttrib &= 0xf0; |
| 951 | ScreenAttrib |= fg; |
| 952 | } |
| 953 | if (bg >= 0 && bg < 16) |
| 954 | { |
| 955 | ScreenAttrib &= 0x0f; |
| 956 | ScreenAttrib |= ((bg & 0x0f) << 4); |
| 957 | } |
| 958 | } |
| 959 | |
| 960 | Lisp_Object Vdos_unsupported_char_glyph; |
| 961 | extern unsigned char *encode_terminal_code (struct glyph *, int, |
| 962 | struct coding_system *); |
| 963 | static void |
| 964 | IT_write_glyphs (struct frame *f, struct glyph *str, int str_len) |
| 965 | { |
| 966 | unsigned char *screen_buf, *screen_bp, *screen_buf_end, *bp; |
| 967 | int unsupported_face = 0; |
| 968 | unsigned unsupported_char = '\177'; |
| 969 | int offset = 2 * (new_pos_X + screen_size_X * new_pos_Y); |
| 970 | register int sl = str_len; |
| 971 | register int tlen = GLYPH_TABLE_LENGTH; |
| 972 | register Lisp_Object *tbase = GLYPH_TABLE_BASE; |
| 973 | struct tty_display_info *tty = FRAME_TTY (f); |
| 974 | struct frame *sf; |
| 975 | unsigned char *conversion_buffer; |
| 976 | |
| 977 | /* Do we need to consider conversion of unibyte characters to |
| 978 | multibyte? */ |
| 979 | int convert_unibyte_characters |
| 980 | = (NILP (current_buffer->enable_multibyte_characters) |
| 981 | && unibyte_display_via_language_environment); |
| 982 | |
| 983 | /* If terminal_coding does any conversion, use it, otherwise use |
| 984 | safe_terminal_coding. We can't use CODING_REQUIRE_ENCODING here |
| 985 | because it always returns 1 if terminal_coding.src_multibyte is 1. */ |
| 986 | struct coding_system *coding = FRAME_TERMINAL_CODING (f); |
| 987 | |
| 988 | if (!(coding->common_flags & CODING_REQUIRE_ENCODING_MASK)) |
| 989 | coding = &safe_terminal_coding; |
| 990 | |
| 991 | if (str_len <= 0) return; |
| 992 | |
| 993 | screen_buf = screen_bp = alloca (str_len * 2); |
| 994 | screen_buf_end = screen_buf + str_len * 2; |
| 995 | sf = SELECTED_FRAME(); |
| 996 | |
| 997 | /* Since faces get cached and uncached behind our back, we can't |
| 998 | rely on their indices in the cache being consistent across |
| 999 | invocations. So always reset the screen face to the default |
| 1000 | face of the frame, before writing glyphs, and let the glyphs |
| 1001 | set the right face if it's different from the default. */ |
| 1002 | IT_set_face (DEFAULT_FACE_ID); |
| 1003 | |
| 1004 | /* The mode bit CODING_MODE_LAST_BLOCK should be set to 1 only at |
| 1005 | the tail. */ |
| 1006 | coding->mode &= ~CODING_MODE_LAST_BLOCK; |
| 1007 | while (sl > 0) |
| 1008 | { |
| 1009 | int cf; |
| 1010 | |
| 1011 | /* Glyphs with GLYPH_MASK_PADDING bit set are actually there |
| 1012 | only for the redisplay code to know how many columns does |
| 1013 | this character occupy on the screen. Skip padding glyphs. */ |
| 1014 | if (CHAR_GLYPH_PADDING_P (*str)) |
| 1015 | { |
| 1016 | str++; |
| 1017 | sl--; |
| 1018 | } |
| 1019 | else |
| 1020 | { |
| 1021 | /* If the face of this glyph is different from the current |
| 1022 | screen face, update the screen attribute byte. */ |
| 1023 | cf = str->face_id; |
| 1024 | if (cf != screen_face) |
| 1025 | IT_set_face (cf); /* handles invalid faces gracefully */ |
| 1026 | |
| 1027 | if (sl <= 1) |
| 1028 | /* This is the last glyph. */ |
| 1029 | coding->mode |= CODING_MODE_LAST_BLOCK; |
| 1030 | |
| 1031 | conversion_buffer = encode_terminal_code (str, 1, coding); |
| 1032 | if (coding->produced > 0) |
| 1033 | { |
| 1034 | if (2*coding->produced > screen_buf_end - screen_bp) |
| 1035 | { |
| 1036 | /* The allocated buffer for screen writes is too small. |
| 1037 | Flush it and loop again without incrementing STR, so |
| 1038 | that the next loop will begin with the same glyph. */ |
| 1039 | int nbytes = screen_bp - screen_buf; |
| 1040 | |
| 1041 | mouse_off_maybe (); |
| 1042 | dosmemput (screen_buf, nbytes, (int)ScreenPrimary + offset); |
| 1043 | if (screen_virtual_segment) |
| 1044 | dosv_refresh_virtual_screen (offset, nbytes / 2); |
| 1045 | new_pos_X += nbytes / 2; |
| 1046 | offset += nbytes; |
| 1047 | |
| 1048 | /* Prepare to reuse the same buffer again. */ |
| 1049 | screen_bp = screen_buf; |
| 1050 | continue; |
| 1051 | } |
| 1052 | else |
| 1053 | { |
| 1054 | /* There's enough place in the allocated buffer to add |
| 1055 | the encoding of this glyph. */ |
| 1056 | |
| 1057 | /* Copy the encoded bytes to the allocated buffer. */ |
| 1058 | for (bp = conversion_buffer; coding->produced--; bp++) |
| 1059 | { |
| 1060 | *screen_bp++ = (unsigned char)*bp; |
| 1061 | *screen_bp++ = ScreenAttrib; |
| 1062 | if (tty->termscript) |
| 1063 | fputc (*bp, tty->termscript); |
| 1064 | } |
| 1065 | } |
| 1066 | } |
| 1067 | /* Update STR and its remaining length. */ |
| 1068 | str++; |
| 1069 | sl--; |
| 1070 | } |
| 1071 | } |
| 1072 | |
| 1073 | /* Dump whatever is left in the screen buffer. */ |
| 1074 | mouse_off_maybe (); |
| 1075 | dosmemput (screen_buf, screen_bp - screen_buf, (int)ScreenPrimary + offset); |
| 1076 | if (screen_virtual_segment) |
| 1077 | dosv_refresh_virtual_screen (offset, (screen_bp - screen_buf) / 2); |
| 1078 | new_pos_X += (screen_bp - screen_buf) / 2; |
| 1079 | } |
| 1080 | |
| 1081 | /************************************************************************ |
| 1082 | Mouse Highlight (and friends..) |
| 1083 | ************************************************************************/ |
| 1084 | |
| 1085 | /* Last window where we saw the mouse. Used by mouse-autoselect-window. */ |
| 1086 | static Lisp_Object last_mouse_window; |
| 1087 | |
| 1088 | static int mouse_preempted = 0; /* non-zero when XMenu gobbles mouse events */ |
| 1089 | |
| 1090 | /* Set the mouse pointer shape according to whether it is in the |
| 1091 | area where the mouse highlight is in effect. */ |
| 1092 | static void |
| 1093 | IT_set_mouse_pointer (int mode) |
| 1094 | { |
| 1095 | /* A no-op for now. DOS text-mode mouse pointer doesn't offer too |
| 1096 | many possibilities to change its shape, and the available |
| 1097 | functionality pretty much sucks (e.g., almost every reasonable |
| 1098 | shape will conceal the character it is on). Since the color of |
| 1099 | the pointer changes in the highlighted area, it is not clear to |
| 1100 | me whether anything else is required, anyway. */ |
| 1101 | } |
| 1102 | |
| 1103 | /* Display the active region described by mouse_face_* |
| 1104 | in its mouse-face if HL > 0, in its normal face if HL = 0. */ |
| 1105 | static void |
| 1106 | show_mouse_face (struct tty_display_info *dpyinfo, int hl) |
| 1107 | { |
| 1108 | struct window *w = XWINDOW (dpyinfo->mouse_face_window); |
| 1109 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
| 1110 | int i; |
| 1111 | struct face *fp; |
| 1112 | struct tty_display_info *tty = FRAME_TTY (f); |
| 1113 | |
| 1114 | |
| 1115 | /* If window is in the process of being destroyed, don't bother |
| 1116 | doing anything. */ |
| 1117 | if (w->current_matrix == NULL) |
| 1118 | goto set_cursor_shape; |
| 1119 | |
| 1120 | /* Recognize when we are called to operate on rows that don't exist |
| 1121 | anymore. This can happen when a window is split. */ |
| 1122 | if (dpyinfo->mouse_face_end_row >= w->current_matrix->nrows) |
| 1123 | goto set_cursor_shape; |
| 1124 | |
| 1125 | /* There's no sense to do anything if the mouse face isn't realized. */ |
| 1126 | if (hl > 0) |
| 1127 | { |
| 1128 | if (dpyinfo->mouse_face_hidden) |
| 1129 | goto set_cursor_shape; |
| 1130 | |
| 1131 | fp = FACE_FROM_ID (SELECTED_FRAME(), dpyinfo->mouse_face_face_id); |
| 1132 | if (!fp) |
| 1133 | goto set_cursor_shape; |
| 1134 | } |
| 1135 | |
| 1136 | /* Note that mouse_face_beg_row etc. are window relative. */ |
| 1137 | for (i = dpyinfo->mouse_face_beg_row; |
| 1138 | i <= dpyinfo->mouse_face_end_row; |
| 1139 | i++) |
| 1140 | { |
| 1141 | int start_hpos, end_hpos; |
| 1142 | struct glyph_row *row = MATRIX_ROW (w->current_matrix, i); |
| 1143 | |
| 1144 | /* Don't do anything if row doesn't have valid contents. */ |
| 1145 | if (!row->enabled_p) |
| 1146 | continue; |
| 1147 | |
| 1148 | /* For all but the first row, the highlight starts at column 0. */ |
| 1149 | if (i == dpyinfo->mouse_face_beg_row) |
| 1150 | start_hpos = dpyinfo->mouse_face_beg_col; |
| 1151 | else |
| 1152 | start_hpos = 0; |
| 1153 | |
| 1154 | if (i == dpyinfo->mouse_face_end_row) |
| 1155 | end_hpos = dpyinfo->mouse_face_end_col; |
| 1156 | else |
| 1157 | end_hpos = row->used[TEXT_AREA]; |
| 1158 | |
| 1159 | if (end_hpos <= start_hpos) |
| 1160 | continue; |
| 1161 | /* Record that some glyphs of this row are displayed in |
| 1162 | mouse-face. */ |
| 1163 | row->mouse_face_p = hl > 0; |
| 1164 | if (hl > 0) |
| 1165 | { |
| 1166 | int vpos = row->y + WINDOW_TOP_EDGE_Y (w); |
| 1167 | int kstart = start_hpos + WINDOW_LEFT_EDGE_X (w); |
| 1168 | int nglyphs = end_hpos - start_hpos; |
| 1169 | int offset = ScreenPrimary + 2*(vpos*screen_size_X + kstart) + 1; |
| 1170 | int start_offset = offset; |
| 1171 | |
| 1172 | if (tty->termscript) |
| 1173 | fprintf (tty->termscript, "\n<MH+ %d-%d:%d>", |
| 1174 | kstart, kstart + nglyphs - 1, vpos); |
| 1175 | |
| 1176 | mouse_off (); |
| 1177 | IT_set_face (dpyinfo->mouse_face_face_id); |
| 1178 | /* Since we are going to change only the _colors_ of the |
| 1179 | displayed text, there's no need to go through all the |
| 1180 | pain of generating and encoding the text from the glyphs. |
| 1181 | Instead, we simply poke the attribute byte of each |
| 1182 | affected position in video memory with the colors |
| 1183 | computed by IT_set_face! */ |
| 1184 | _farsetsel (_dos_ds); |
| 1185 | while (nglyphs--) |
| 1186 | { |
| 1187 | _farnspokeb (offset, ScreenAttrib); |
| 1188 | offset += 2; |
| 1189 | } |
| 1190 | if (screen_virtual_segment) |
| 1191 | dosv_refresh_virtual_screen (start_offset, end_hpos - start_hpos); |
| 1192 | mouse_on (); |
| 1193 | } |
| 1194 | else |
| 1195 | { |
| 1196 | /* We are removing a previously-drawn mouse highlight. The |
| 1197 | safest way to do so is to redraw the glyphs anew, since |
| 1198 | all kinds of faces and display tables could have changed |
| 1199 | behind our back. */ |
| 1200 | int nglyphs = end_hpos - start_hpos; |
| 1201 | int save_x = new_pos_X, save_y = new_pos_Y; |
| 1202 | |
| 1203 | if (end_hpos >= row->used[TEXT_AREA]) |
| 1204 | nglyphs = row->used[TEXT_AREA] - start_hpos; |
| 1205 | |
| 1206 | /* IT_write_glyphs writes at cursor position, so we need to |
| 1207 | temporarily move cursor coordinates to the beginning of |
| 1208 | the highlight region. */ |
| 1209 | new_pos_X = start_hpos + WINDOW_LEFT_EDGE_X (w); |
| 1210 | new_pos_Y = row->y + WINDOW_TOP_EDGE_Y (w); |
| 1211 | |
| 1212 | if (tty->termscript) |
| 1213 | fprintf (tty->termscript, "<MH- %d-%d:%d>", |
| 1214 | new_pos_X, new_pos_X + nglyphs - 1, new_pos_Y); |
| 1215 | IT_write_glyphs (f, row->glyphs[TEXT_AREA] + start_hpos, nglyphs); |
| 1216 | if (tty->termscript) |
| 1217 | fputs ("\n", tty->termscript); |
| 1218 | new_pos_X = save_x; |
| 1219 | new_pos_Y = save_y; |
| 1220 | } |
| 1221 | } |
| 1222 | |
| 1223 | set_cursor_shape: |
| 1224 | /* Change the mouse pointer shape. */ |
| 1225 | IT_set_mouse_pointer (hl); |
| 1226 | } |
| 1227 | |
| 1228 | /* Clear out the mouse-highlighted active region. |
| 1229 | Redraw it un-highlighted first. */ |
| 1230 | static void |
| 1231 | clear_mouse_face (struct tty_display_info *dpyinfo) |
| 1232 | { |
| 1233 | if (!dpyinfo->mouse_face_hidden && ! NILP (dpyinfo->mouse_face_window)) |
| 1234 | show_mouse_face (dpyinfo, 0); |
| 1235 | |
| 1236 | dpyinfo->mouse_face_beg_row = dpyinfo->mouse_face_beg_col = -1; |
| 1237 | dpyinfo->mouse_face_end_row = dpyinfo->mouse_face_end_col = -1; |
| 1238 | dpyinfo->mouse_face_window = Qnil; |
| 1239 | } |
| 1240 | |
| 1241 | /* Find the glyph matrix position of buffer position POS in window W. |
| 1242 | *HPOS and *VPOS are set to the positions found. W's current glyphs |
| 1243 | must be up to date. If POS is above window start return (0, 0). |
| 1244 | If POS is after end of W, return end of last line in W. */ |
| 1245 | static int |
| 1246 | fast_find_position (struct window *w, int pos, int *hpos, int *vpos) |
| 1247 | { |
| 1248 | int i, lastcol, line_start_position, maybe_next_line_p = 0; |
| 1249 | int yb = window_text_bottom_y (w); |
| 1250 | struct glyph_row *row = MATRIX_ROW (w->current_matrix, 0), *best_row = row; |
| 1251 | |
| 1252 | while (row->y < yb) |
| 1253 | { |
| 1254 | if (row->used[TEXT_AREA]) |
| 1255 | line_start_position = row->glyphs[TEXT_AREA]->charpos; |
| 1256 | else |
| 1257 | line_start_position = 0; |
| 1258 | |
| 1259 | if (line_start_position > pos) |
| 1260 | break; |
| 1261 | /* If the position sought is the end of the buffer, |
| 1262 | don't include the blank lines at the bottom of the window. */ |
| 1263 | else if (line_start_position == pos |
| 1264 | && pos == BUF_ZV (XBUFFER (w->buffer))) |
| 1265 | { |
| 1266 | maybe_next_line_p = 1; |
| 1267 | break; |
| 1268 | } |
| 1269 | else if (line_start_position > 0) |
| 1270 | best_row = row; |
| 1271 | |
| 1272 | /* Don't overstep the last matrix row, lest we get into the |
| 1273 | never-never land... */ |
| 1274 | if (row->y + 1 >= yb) |
| 1275 | break; |
| 1276 | |
| 1277 | ++row; |
| 1278 | } |
| 1279 | |
| 1280 | /* Find the right column within BEST_ROW. */ |
| 1281 | lastcol = 0; |
| 1282 | row = best_row; |
| 1283 | for (i = 0; i < row->used[TEXT_AREA]; i++) |
| 1284 | { |
| 1285 | struct glyph *glyph = row->glyphs[TEXT_AREA] + i; |
| 1286 | int charpos; |
| 1287 | |
| 1288 | charpos = glyph->charpos; |
| 1289 | if (charpos == pos) |
| 1290 | { |
| 1291 | *hpos = i; |
| 1292 | *vpos = row->y; |
| 1293 | return 1; |
| 1294 | } |
| 1295 | else if (charpos > pos) |
| 1296 | break; |
| 1297 | else if (charpos > 0) |
| 1298 | lastcol = i; |
| 1299 | } |
| 1300 | |
| 1301 | /* If we're looking for the end of the buffer, |
| 1302 | and we didn't find it in the line we scanned, |
| 1303 | use the start of the following line. */ |
| 1304 | if (maybe_next_line_p) |
| 1305 | { |
| 1306 | ++row; |
| 1307 | lastcol = 0; |
| 1308 | } |
| 1309 | |
| 1310 | *vpos = row->y; |
| 1311 | *hpos = lastcol + 1; |
| 1312 | return 0; |
| 1313 | } |
| 1314 | |
| 1315 | /* Take proper action when mouse has moved to the mode or top line of |
| 1316 | window W, x-position X. MODE_LINE_P non-zero means mouse is on the |
| 1317 | mode line. X is relative to the start of the text display area of |
| 1318 | W, so the width of fringes and scroll bars must be subtracted |
| 1319 | to get a position relative to the start of the mode line. */ |
| 1320 | static void |
| 1321 | IT_note_mode_line_highlight (struct window *w, int x, int mode_line_p) |
| 1322 | { |
| 1323 | struct frame *f = XFRAME (w->frame); |
| 1324 | struct tty_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f); |
| 1325 | struct glyph_row *row; |
| 1326 | |
| 1327 | if (mode_line_p) |
| 1328 | row = MATRIX_MODE_LINE_ROW (w->current_matrix); |
| 1329 | else |
| 1330 | row = MATRIX_HEADER_LINE_ROW (w->current_matrix); |
| 1331 | |
| 1332 | if (row->enabled_p) |
| 1333 | { |
| 1334 | extern Lisp_Object Qhelp_echo; |
| 1335 | struct glyph *glyph, *end; |
| 1336 | Lisp_Object help, map; |
| 1337 | |
| 1338 | /* Find the glyph under X. */ |
| 1339 | glyph = (row->glyphs[TEXT_AREA] |
| 1340 | + x |
| 1341 | /* in case someone implements scroll bars some day... */ |
| 1342 | - WINDOW_LEFT_SCROLL_BAR_AREA_WIDTH (w)); |
| 1343 | end = glyph + row->used[TEXT_AREA]; |
| 1344 | if (glyph < end |
| 1345 | && STRINGP (glyph->object) |
| 1346 | && STRING_INTERVALS (glyph->object) |
| 1347 | && glyph->charpos >= 0 |
| 1348 | && glyph->charpos < SCHARS (glyph->object)) |
| 1349 | { |
| 1350 | /* If we're on a string with `help-echo' text property, |
| 1351 | arrange for the help to be displayed. This is done by |
| 1352 | setting the global variable help_echo to the help string. */ |
| 1353 | help = Fget_text_property (make_number (glyph->charpos), |
| 1354 | Qhelp_echo, glyph->object); |
| 1355 | if (!NILP (help)) |
| 1356 | { |
| 1357 | help_echo_string = help; |
| 1358 | XSETWINDOW (help_echo_window, w); |
| 1359 | help_echo_object = glyph->object; |
| 1360 | help_echo_pos = glyph->charpos; |
| 1361 | } |
| 1362 | } |
| 1363 | } |
| 1364 | } |
| 1365 | |
| 1366 | /* Take proper action when the mouse has moved to position X, Y on |
| 1367 | frame F as regards highlighting characters that have mouse-face |
| 1368 | properties. Also de-highlighting chars where the mouse was before. |
| 1369 | X and Y can be negative or out of range. */ |
| 1370 | static void |
| 1371 | IT_note_mouse_highlight (struct frame *f, int x, int y) |
| 1372 | { |
| 1373 | struct tty_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f); |
| 1374 | enum window_part part = ON_NOTHING; |
| 1375 | Lisp_Object window; |
| 1376 | struct window *w; |
| 1377 | |
| 1378 | /* When a menu is active, don't highlight because this looks odd. */ |
| 1379 | if (mouse_preempted) |
| 1380 | return; |
| 1381 | |
| 1382 | if (NILP (Vmouse_highlight) |
| 1383 | || !f->glyphs_initialized_p) |
| 1384 | return; |
| 1385 | |
| 1386 | dpyinfo->mouse_face_mouse_x = x; |
| 1387 | dpyinfo->mouse_face_mouse_y = y; |
| 1388 | dpyinfo->mouse_face_mouse_frame = f; |
| 1389 | |
| 1390 | if (dpyinfo->mouse_face_defer) |
| 1391 | return; |
| 1392 | |
| 1393 | if (gc_in_progress) |
| 1394 | { |
| 1395 | dpyinfo->mouse_face_deferred_gc = 1; |
| 1396 | return; |
| 1397 | } |
| 1398 | |
| 1399 | /* Which window is that in? */ |
| 1400 | window = window_from_coordinates (f, x, y, &part, &x, &y, 0); |
| 1401 | |
| 1402 | /* If we were displaying active text in another window, clear that. */ |
| 1403 | if (! EQ (window, dpyinfo->mouse_face_window)) |
| 1404 | clear_mouse_face (dpyinfo); |
| 1405 | |
| 1406 | /* Not on a window -> return. */ |
| 1407 | if (!WINDOWP (window)) |
| 1408 | return; |
| 1409 | |
| 1410 | /* Convert to window-relative coordinates. */ |
| 1411 | w = XWINDOW (window); |
| 1412 | |
| 1413 | if (part == ON_MODE_LINE || part == ON_HEADER_LINE) |
| 1414 | { |
| 1415 | /* Mouse is on the mode or top line. */ |
| 1416 | IT_note_mode_line_highlight (w, x, part == ON_MODE_LINE); |
| 1417 | return; |
| 1418 | } |
| 1419 | |
| 1420 | IT_set_mouse_pointer (0); |
| 1421 | |
| 1422 | /* Are we in a window whose display is up to date? |
| 1423 | And verify the buffer's text has not changed. */ |
| 1424 | if (part == ON_TEXT |
| 1425 | && EQ (w->window_end_valid, w->buffer) |
| 1426 | && XFASTINT (w->last_modified) == BUF_MODIFF (XBUFFER (w->buffer)) |
| 1427 | && (XFASTINT (w->last_overlay_modified) |
| 1428 | == BUF_OVERLAY_MODIFF (XBUFFER (w->buffer)))) |
| 1429 | { |
| 1430 | int pos, i, nrows = w->current_matrix->nrows; |
| 1431 | struct glyph_row *row; |
| 1432 | struct glyph *glyph; |
| 1433 | |
| 1434 | /* Find the glyph under X/Y. */ |
| 1435 | glyph = NULL; |
| 1436 | if (y >= 0 && y < nrows) |
| 1437 | { |
| 1438 | row = MATRIX_ROW (w->current_matrix, y); |
| 1439 | /* Give up if some row before the one we are looking for is |
| 1440 | not enabled. */ |
| 1441 | for (i = 0; i <= y; i++) |
| 1442 | if (!MATRIX_ROW (w->current_matrix, i)->enabled_p) |
| 1443 | break; |
| 1444 | if (i > y /* all rows upto and including the one at Y are enabled */ |
| 1445 | && row->displays_text_p |
| 1446 | && x < window_box_width (w, TEXT_AREA)) |
| 1447 | { |
| 1448 | glyph = row->glyphs[TEXT_AREA]; |
| 1449 | if (x >= row->used[TEXT_AREA]) |
| 1450 | glyph = NULL; |
| 1451 | else |
| 1452 | { |
| 1453 | glyph += x; |
| 1454 | if (!BUFFERP (glyph->object)) |
| 1455 | glyph = NULL; |
| 1456 | } |
| 1457 | } |
| 1458 | } |
| 1459 | |
| 1460 | /* Clear mouse face if X/Y not over text. */ |
| 1461 | if (glyph == NULL) |
| 1462 | { |
| 1463 | clear_mouse_face (dpyinfo); |
| 1464 | return; |
| 1465 | } |
| 1466 | |
| 1467 | if (!BUFFERP (glyph->object)) |
| 1468 | abort (); |
| 1469 | pos = glyph->charpos; |
| 1470 | |
| 1471 | /* Check for mouse-face and help-echo. */ |
| 1472 | { |
| 1473 | extern Lisp_Object Qmouse_face; |
| 1474 | Lisp_Object mouse_face, overlay, position, *overlay_vec; |
| 1475 | int noverlays, obegv, ozv; |
| 1476 | struct buffer *obuf; |
| 1477 | |
| 1478 | /* If we get an out-of-range value, return now; avoid an error. */ |
| 1479 | if (pos > BUF_Z (XBUFFER (w->buffer))) |
| 1480 | return; |
| 1481 | |
| 1482 | /* Make the window's buffer temporarily current for |
| 1483 | overlays_at and compute_char_face. */ |
| 1484 | obuf = current_buffer; |
| 1485 | current_buffer = XBUFFER (w->buffer); |
| 1486 | obegv = BEGV; |
| 1487 | ozv = ZV; |
| 1488 | BEGV = BEG; |
| 1489 | ZV = Z; |
| 1490 | |
| 1491 | /* Is this char mouse-active or does it have help-echo? */ |
| 1492 | XSETINT (position, pos); |
| 1493 | |
| 1494 | /* Put all the overlays we want in a vector in overlay_vec. */ |
| 1495 | GET_OVERLAYS_AT (pos, overlay_vec, noverlays, NULL, 0); |
| 1496 | /* Sort overlays into increasing priority order. */ |
| 1497 | noverlays = sort_overlays (overlay_vec, noverlays, w); |
| 1498 | |
| 1499 | /* Check mouse-face highlighting. */ |
| 1500 | if (! (EQ (window, dpyinfo->mouse_face_window) |
| 1501 | && y >= dpyinfo->mouse_face_beg_row |
| 1502 | && y <= dpyinfo->mouse_face_end_row |
| 1503 | && (y > dpyinfo->mouse_face_beg_row |
| 1504 | || x >= dpyinfo->mouse_face_beg_col) |
| 1505 | && (y < dpyinfo->mouse_face_end_row |
| 1506 | || x < dpyinfo->mouse_face_end_col |
| 1507 | || dpyinfo->mouse_face_past_end))) |
| 1508 | { |
| 1509 | /* Clear the display of the old active region, if any. */ |
| 1510 | clear_mouse_face (dpyinfo); |
| 1511 | |
| 1512 | /* Find highest priority overlay that has a mouse-face prop. */ |
| 1513 | overlay = Qnil; |
| 1514 | for (i = noverlays - 1; i >= 0; --i) |
| 1515 | { |
| 1516 | mouse_face = Foverlay_get (overlay_vec[i], Qmouse_face); |
| 1517 | if (!NILP (mouse_face)) |
| 1518 | { |
| 1519 | overlay = overlay_vec[i]; |
| 1520 | break; |
| 1521 | } |
| 1522 | } |
| 1523 | |
| 1524 | /* If no overlay applies, get a text property. */ |
| 1525 | if (NILP (overlay)) |
| 1526 | mouse_face = Fget_text_property (position, Qmouse_face, |
| 1527 | w->buffer); |
| 1528 | |
| 1529 | /* Handle the overlay case. */ |
| 1530 | if (! NILP (overlay)) |
| 1531 | { |
| 1532 | /* Find the range of text around this char that |
| 1533 | should be active. */ |
| 1534 | Lisp_Object before, after; |
| 1535 | EMACS_INT ignore; |
| 1536 | |
| 1537 | before = Foverlay_start (overlay); |
| 1538 | after = Foverlay_end (overlay); |
| 1539 | /* Record this as the current active region. */ |
| 1540 | fast_find_position (w, XFASTINT (before), |
| 1541 | &dpyinfo->mouse_face_beg_col, |
| 1542 | &dpyinfo->mouse_face_beg_row); |
| 1543 | dpyinfo->mouse_face_past_end |
| 1544 | = !fast_find_position (w, XFASTINT (after), |
| 1545 | &dpyinfo->mouse_face_end_col, |
| 1546 | &dpyinfo->mouse_face_end_row); |
| 1547 | dpyinfo->mouse_face_window = window; |
| 1548 | dpyinfo->mouse_face_face_id |
| 1549 | = face_at_buffer_position (w, pos, 0, 0, |
| 1550 | &ignore, pos + 1, |
| 1551 | !dpyinfo->mouse_face_hidden); |
| 1552 | |
| 1553 | /* Display it as active. */ |
| 1554 | show_mouse_face (dpyinfo, 1); |
| 1555 | } |
| 1556 | /* Handle the text property case. */ |
| 1557 | else if (! NILP (mouse_face)) |
| 1558 | { |
| 1559 | /* Find the range of text around this char that |
| 1560 | should be active. */ |
| 1561 | Lisp_Object before, after, beginning, end; |
| 1562 | EMACS_INT ignore; |
| 1563 | |
| 1564 | beginning = Fmarker_position (w->start); |
| 1565 | XSETINT (end, (BUF_Z (XBUFFER (w->buffer)) |
| 1566 | - XFASTINT (w->window_end_pos))); |
| 1567 | before |
| 1568 | = Fprevious_single_property_change (make_number (pos + 1), |
| 1569 | Qmouse_face, |
| 1570 | w->buffer, beginning); |
| 1571 | after |
| 1572 | = Fnext_single_property_change (position, Qmouse_face, |
| 1573 | w->buffer, end); |
| 1574 | /* Record this as the current active region. */ |
| 1575 | fast_find_position (w, XFASTINT (before), |
| 1576 | &dpyinfo->mouse_face_beg_col, |
| 1577 | &dpyinfo->mouse_face_beg_row); |
| 1578 | dpyinfo->mouse_face_past_end |
| 1579 | = !fast_find_position (w, XFASTINT (after), |
| 1580 | &dpyinfo->mouse_face_end_col, |
| 1581 | &dpyinfo->mouse_face_end_row); |
| 1582 | dpyinfo->mouse_face_window = window; |
| 1583 | dpyinfo->mouse_face_face_id |
| 1584 | = face_at_buffer_position (w, pos, 0, 0, |
| 1585 | &ignore, pos + 1, |
| 1586 | !dpyinfo->mouse_face_hidden); |
| 1587 | |
| 1588 | /* Display it as active. */ |
| 1589 | show_mouse_face (dpyinfo, 1); |
| 1590 | } |
| 1591 | } |
| 1592 | |
| 1593 | /* Look for a `help-echo' property. */ |
| 1594 | { |
| 1595 | Lisp_Object help; |
| 1596 | extern Lisp_Object Qhelp_echo; |
| 1597 | |
| 1598 | /* Check overlays first. */ |
| 1599 | help = Qnil; |
| 1600 | for (i = noverlays - 1; i >= 0 && NILP (help); --i) |
| 1601 | { |
| 1602 | overlay = overlay_vec[i]; |
| 1603 | help = Foverlay_get (overlay, Qhelp_echo); |
| 1604 | } |
| 1605 | |
| 1606 | if (!NILP (help)) |
| 1607 | { |
| 1608 | help_echo_string = help; |
| 1609 | help_echo_window = window; |
| 1610 | help_echo_object = overlay; |
| 1611 | help_echo_pos = pos; |
| 1612 | } |
| 1613 | /* Try text properties. */ |
| 1614 | else if (NILP (help) |
| 1615 | && ((STRINGP (glyph->object) |
| 1616 | && glyph->charpos >= 0 |
| 1617 | && glyph->charpos < SCHARS (glyph->object)) |
| 1618 | || (BUFFERP (glyph->object) |
| 1619 | && glyph->charpos >= BEGV |
| 1620 | && glyph->charpos < ZV))) |
| 1621 | { |
| 1622 | help = Fget_text_property (make_number (glyph->charpos), |
| 1623 | Qhelp_echo, glyph->object); |
| 1624 | if (!NILP (help)) |
| 1625 | { |
| 1626 | help_echo_string = help; |
| 1627 | help_echo_window = window; |
| 1628 | help_echo_object = glyph->object; |
| 1629 | help_echo_pos = glyph->charpos; |
| 1630 | } |
| 1631 | } |
| 1632 | } |
| 1633 | |
| 1634 | BEGV = obegv; |
| 1635 | ZV = ozv; |
| 1636 | current_buffer = obuf; |
| 1637 | } |
| 1638 | } |
| 1639 | } |
| 1640 | |
| 1641 | static void |
| 1642 | IT_clear_end_of_line (struct frame *f, int first_unused) |
| 1643 | { |
| 1644 | char *spaces, *sp; |
| 1645 | int i, j, offset = 2 * (new_pos_X + screen_size_X * new_pos_Y); |
| 1646 | extern int fatal_error_in_progress; |
| 1647 | struct tty_display_info *tty = FRAME_TTY (f); |
| 1648 | |
| 1649 | if (new_pos_X >= first_unused || fatal_error_in_progress) |
| 1650 | return; |
| 1651 | |
| 1652 | IT_set_face (0); |
| 1653 | i = (j = first_unused - new_pos_X) * 2; |
| 1654 | if (tty->termscript) |
| 1655 | fprintf (tty->termscript, "<CLR:EOL[%d..%d)>", new_pos_X, first_unused); |
| 1656 | spaces = sp = alloca (i); |
| 1657 | |
| 1658 | while (--j >= 0) |
| 1659 | { |
| 1660 | *sp++ = ' '; |
| 1661 | *sp++ = ScreenAttrib; |
| 1662 | } |
| 1663 | |
| 1664 | mouse_off_maybe (); |
| 1665 | dosmemput (spaces, i, (int)ScreenPrimary + offset); |
| 1666 | if (screen_virtual_segment) |
| 1667 | dosv_refresh_virtual_screen (offset, i / 2); |
| 1668 | |
| 1669 | /* clear_end_of_line_raw on term.c leaves the cursor at first_unused. |
| 1670 | Let's follow their lead, in case someone relies on this. */ |
| 1671 | new_pos_X = first_unused; |
| 1672 | } |
| 1673 | |
| 1674 | static void |
| 1675 | IT_clear_screen (struct frame *f) |
| 1676 | { |
| 1677 | struct tty_display_info *tty = FRAME_TTY (f); |
| 1678 | |
| 1679 | if (tty->termscript) |
| 1680 | fprintf (tty->termscript, "<CLR:SCR>"); |
| 1681 | /* We are sometimes called (from clear_garbaged_frames) when a new |
| 1682 | frame is being created, but its faces are not yet realized. In |
| 1683 | such a case we cannot call IT_set_face, since it will fail to find |
| 1684 | any valid faces and will abort. Instead, use the initial screen |
| 1685 | colors; that should mimic what a Unix tty does, which simply clears |
| 1686 | the screen with whatever default colors are in use. */ |
| 1687 | if (FACE_FROM_ID (SELECTED_FRAME (), DEFAULT_FACE_ID) == NULL) |
| 1688 | ScreenAttrib = (initial_screen_colors[0] << 4) | initial_screen_colors[1]; |
| 1689 | else |
| 1690 | IT_set_face (0); |
| 1691 | mouse_off (); |
| 1692 | ScreenClear (); |
| 1693 | if (screen_virtual_segment) |
| 1694 | dosv_refresh_virtual_screen (0, screen_size); |
| 1695 | new_pos_X = new_pos_Y = 0; |
| 1696 | } |
| 1697 | |
| 1698 | static void |
| 1699 | IT_clear_to_end (struct frame *f) |
| 1700 | { |
| 1701 | struct tty_display_info *tty = FRAME_TTY (f); |
| 1702 | |
| 1703 | if (tty->termscript) |
| 1704 | fprintf (tty->termscript, "<CLR:EOS>"); |
| 1705 | |
| 1706 | while (new_pos_Y < screen_size_Y) { |
| 1707 | new_pos_X = 0; |
| 1708 | IT_clear_end_of_line (f, screen_size_X); |
| 1709 | new_pos_Y++; |
| 1710 | } |
| 1711 | } |
| 1712 | |
| 1713 | static void |
| 1714 | IT_cursor_to (struct frame *f, int y, int x) |
| 1715 | { |
| 1716 | struct tty_display_info *tty = FRAME_TTY (f); |
| 1717 | |
| 1718 | if (tty->termscript) |
| 1719 | fprintf (tty->termscript, "\n<XY=%dx%d>", x, y); |
| 1720 | new_pos_X = x; |
| 1721 | new_pos_Y = y; |
| 1722 | } |
| 1723 | |
| 1724 | static int cursor_cleared; |
| 1725 | |
| 1726 | static void |
| 1727 | IT_display_cursor (int on) |
| 1728 | { |
| 1729 | struct tty_display_info *tty = CURTTY (); |
| 1730 | |
| 1731 | if (on && cursor_cleared) |
| 1732 | { |
| 1733 | ScreenSetCursor (current_pos_Y, current_pos_X); |
| 1734 | cursor_cleared = 0; |
| 1735 | if (tty->termscript) |
| 1736 | fprintf (tty->termscript, "\nCURSOR ON"); |
| 1737 | } |
| 1738 | else if (!on && !cursor_cleared) |
| 1739 | { |
| 1740 | ScreenSetCursor (-1, -1); |
| 1741 | cursor_cleared = 1; |
| 1742 | if (tty->termscript) |
| 1743 | fprintf (tty->termscript, "\nCURSOR OFF"); |
| 1744 | } |
| 1745 | } |
| 1746 | |
| 1747 | /* Emacs calls cursor-movement functions a lot when it updates the |
| 1748 | display (probably a legacy of old terminals where you cannot |
| 1749 | update a screen line without first moving the cursor there). |
| 1750 | However, cursor movement is expensive on MSDOS (it calls a slow |
| 1751 | BIOS function and requires 2 mode switches), while actual screen |
| 1752 | updates access the video memory directly and don't depend on |
| 1753 | cursor position. To avoid slowing down the redisplay, we cheat: |
| 1754 | all functions that move the cursor only set internal variables |
| 1755 | which record the cursor position, whereas the cursor is only |
| 1756 | moved to its final position whenever screen update is complete. |
| 1757 | |
| 1758 | `IT_cmgoto' is called from the keyboard reading loop and when the |
| 1759 | frame update is complete. This means that we are ready for user |
| 1760 | input, so we update the cursor position to show where the point is, |
| 1761 | and also make the mouse pointer visible. |
| 1762 | |
| 1763 | Special treatment is required when the cursor is in the echo area, |
| 1764 | to put the cursor at the end of the text displayed there. */ |
| 1765 | |
| 1766 | static void |
| 1767 | IT_cmgoto (FRAME_PTR f) |
| 1768 | { |
| 1769 | /* Only set the cursor to where it should be if the display is |
| 1770 | already in sync with the window contents. */ |
| 1771 | int update_cursor_pos = 1; /* MODIFF == unchanged_modified; */ |
| 1772 | struct tty_display_info *tty = FRAME_TTY (f); |
| 1773 | |
| 1774 | /* FIXME: This needs to be rewritten for the new redisplay, or |
| 1775 | removed. */ |
| 1776 | #if 0 |
| 1777 | static int previous_pos_X = -1; |
| 1778 | |
| 1779 | update_cursor_pos = 1; /* temporary!!! */ |
| 1780 | |
| 1781 | /* If the display is in sync, forget any previous knowledge about |
| 1782 | cursor position. This is primarily for unexpected events like |
| 1783 | C-g in the minibuffer. */ |
| 1784 | if (update_cursor_pos && previous_pos_X >= 0) |
| 1785 | previous_pos_X = -1; |
| 1786 | /* If we are in the echo area, put the cursor at the |
| 1787 | end of the echo area message. */ |
| 1788 | if (!update_cursor_pos |
| 1789 | && WINDOW_TOP_EDGE_LINE (XWINDOW (FRAME_MINIBUF_WINDOW (f))) <= new_pos_Y) |
| 1790 | { |
| 1791 | int tem_X = current_pos_X, dummy; |
| 1792 | |
| 1793 | if (echo_area_glyphs) |
| 1794 | { |
| 1795 | tem_X = echo_area_glyphs_length; |
| 1796 | /* Save current cursor position, to be restored after the |
| 1797 | echo area message is erased. Only remember one level |
| 1798 | of previous cursor position. */ |
| 1799 | if (previous_pos_X == -1) |
| 1800 | ScreenGetCursor (&dummy, &previous_pos_X); |
| 1801 | } |
| 1802 | else if (previous_pos_X >= 0) |
| 1803 | { |
| 1804 | /* We wind up here after the echo area message is erased. |
| 1805 | Restore the cursor position we remembered above. */ |
| 1806 | tem_X = previous_pos_X; |
| 1807 | previous_pos_X = -1; |
| 1808 | } |
| 1809 | |
| 1810 | if (current_pos_X != tem_X) |
| 1811 | { |
| 1812 | new_pos_X = tem_X; |
| 1813 | update_cursor_pos = 1; |
| 1814 | } |
| 1815 | } |
| 1816 | #endif |
| 1817 | |
| 1818 | if (update_cursor_pos |
| 1819 | && (current_pos_X != new_pos_X || current_pos_Y != new_pos_Y)) |
| 1820 | { |
| 1821 | ScreenSetCursor (current_pos_Y = new_pos_Y, current_pos_X = new_pos_X); |
| 1822 | if (tty->termscript) |
| 1823 | fprintf (tty->termscript, "\n<CURSOR:%dx%d>", current_pos_X, current_pos_Y); |
| 1824 | } |
| 1825 | |
| 1826 | /* Maybe cursor is invisible, so make it visible. */ |
| 1827 | IT_display_cursor (1); |
| 1828 | |
| 1829 | /* Mouse pointer should be always visible if we are waiting for |
| 1830 | keyboard input. */ |
| 1831 | if (!mouse_visible) |
| 1832 | mouse_on (); |
| 1833 | } |
| 1834 | |
| 1835 | static void |
| 1836 | IT_update_begin (struct frame *f) |
| 1837 | { |
| 1838 | struct tty_display_info *display_info = FRAME_X_DISPLAY_INFO (f); |
| 1839 | struct frame *mouse_face_frame = display_info->mouse_face_mouse_frame; |
| 1840 | |
| 1841 | if (display_info->termscript) |
| 1842 | fprintf (display_info->termscript, "\n\n<UPDATE_BEGIN"); |
| 1843 | |
| 1844 | BLOCK_INPUT; |
| 1845 | |
| 1846 | if (f && f == mouse_face_frame) |
| 1847 | { |
| 1848 | /* Don't do highlighting for mouse motion during the update. */ |
| 1849 | display_info->mouse_face_defer = 1; |
| 1850 | |
| 1851 | /* If F needs to be redrawn, simply forget about any prior mouse |
| 1852 | highlighting. */ |
| 1853 | if (FRAME_GARBAGED_P (f)) |
| 1854 | display_info->mouse_face_window = Qnil; |
| 1855 | |
| 1856 | /* Can we tell that this update does not affect the window |
| 1857 | where the mouse highlight is? If so, no need to turn off. |
| 1858 | Likewise, don't do anything if none of the enabled rows |
| 1859 | contains glyphs highlighted in mouse face. */ |
| 1860 | if (!NILP (display_info->mouse_face_window) |
| 1861 | && WINDOWP (display_info->mouse_face_window)) |
| 1862 | { |
| 1863 | struct window *w = XWINDOW (display_info->mouse_face_window); |
| 1864 | int i; |
| 1865 | |
| 1866 | /* If the mouse highlight is in the window that was deleted |
| 1867 | (e.g., if it was popped by completion), clear highlight |
| 1868 | unconditionally. */ |
| 1869 | if (NILP (w->buffer)) |
| 1870 | display_info->mouse_face_window = Qnil; |
| 1871 | else |
| 1872 | { |
| 1873 | for (i = 0; i < w->desired_matrix->nrows; ++i) |
| 1874 | if (MATRIX_ROW_ENABLED_P (w->desired_matrix, i) |
| 1875 | && MATRIX_ROW (w->current_matrix, i)->mouse_face_p) |
| 1876 | break; |
| 1877 | } |
| 1878 | |
| 1879 | if (NILP (w->buffer) || i < w->desired_matrix->nrows) |
| 1880 | clear_mouse_face (display_info); |
| 1881 | } |
| 1882 | } |
| 1883 | else if (mouse_face_frame && !FRAME_LIVE_P (mouse_face_frame)) |
| 1884 | { |
| 1885 | /* If the frame with mouse highlight was deleted, invalidate the |
| 1886 | highlight info. */ |
| 1887 | display_info->mouse_face_beg_row = display_info->mouse_face_beg_col = -1; |
| 1888 | display_info->mouse_face_end_row = display_info->mouse_face_end_col = -1; |
| 1889 | display_info->mouse_face_window = Qnil; |
| 1890 | display_info->mouse_face_deferred_gc = 0; |
| 1891 | display_info->mouse_face_mouse_frame = NULL; |
| 1892 | } |
| 1893 | |
| 1894 | UNBLOCK_INPUT; |
| 1895 | } |
| 1896 | |
| 1897 | static void |
| 1898 | IT_update_end (struct frame *f) |
| 1899 | { |
| 1900 | struct tty_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f); |
| 1901 | |
| 1902 | if (dpyinfo->termscript) |
| 1903 | fprintf (dpyinfo->termscript, "\n<UPDATE_END\n"); |
| 1904 | dpyinfo->mouse_face_defer = 0; |
| 1905 | } |
| 1906 | |
| 1907 | static void |
| 1908 | IT_frame_up_to_date (struct frame *f) |
| 1909 | { |
| 1910 | struct tty_display_info *dpyinfo = FRAME_X_DISPLAY_INFO (f); |
| 1911 | Lisp_Object new_cursor, frame_desired_cursor; |
| 1912 | struct window *sw; |
| 1913 | |
| 1914 | if (dpyinfo->mouse_face_deferred_gc |
| 1915 | || (f && f == dpyinfo->mouse_face_mouse_frame)) |
| 1916 | { |
| 1917 | BLOCK_INPUT; |
| 1918 | if (dpyinfo->mouse_face_mouse_frame) |
| 1919 | IT_note_mouse_highlight (dpyinfo->mouse_face_mouse_frame, |
| 1920 | dpyinfo->mouse_face_mouse_x, |
| 1921 | dpyinfo->mouse_face_mouse_y); |
| 1922 | dpyinfo->mouse_face_deferred_gc = 0; |
| 1923 | UNBLOCK_INPUT; |
| 1924 | } |
| 1925 | |
| 1926 | /* Set the cursor type to whatever they wanted. In a minibuffer |
| 1927 | window, we want the cursor to appear only if we are reading input |
| 1928 | from this window, and we want the cursor to be taken from the |
| 1929 | frame parameters. For the selected window, we use either its |
| 1930 | buffer-local value or the value from the frame parameters if the |
| 1931 | buffer doesn't define its local value for the cursor type. */ |
| 1932 | sw = XWINDOW (f->selected_window); |
| 1933 | frame_desired_cursor = Fcdr (Fassq (Qcursor_type, f->param_alist)); |
| 1934 | if (cursor_in_echo_area |
| 1935 | && FRAME_HAS_MINIBUF_P (f) |
| 1936 | && EQ (FRAME_MINIBUF_WINDOW (f), echo_area_window) |
| 1937 | && sw == XWINDOW (echo_area_window)) |
| 1938 | new_cursor = frame_desired_cursor; |
| 1939 | else |
| 1940 | { |
| 1941 | struct buffer *b = XBUFFER (sw->buffer); |
| 1942 | |
| 1943 | if (EQ (b->cursor_type, Qt)) |
| 1944 | new_cursor = frame_desired_cursor; |
| 1945 | else if (NILP (b->cursor_type)) /* nil means no cursor */ |
| 1946 | new_cursor = Fcons (Qbar, make_number (0)); |
| 1947 | else |
| 1948 | new_cursor = b->cursor_type; |
| 1949 | } |
| 1950 | |
| 1951 | IT_set_cursor_type (f, new_cursor); |
| 1952 | |
| 1953 | IT_cmgoto (f); /* position cursor when update is done */ |
| 1954 | } |
| 1955 | |
| 1956 | /* Copy LEN glyphs displayed on a single line whose vertical position |
| 1957 | is YPOS, beginning at horizontal position XFROM to horizontal |
| 1958 | position XTO, by moving blocks in the video memory. Used by |
| 1959 | functions that insert and delete glyphs. */ |
| 1960 | static void |
| 1961 | IT_copy_glyphs (int xfrom, int xto, size_t len, int ypos) |
| 1962 | { |
| 1963 | /* The offsets of source and destination relative to the |
| 1964 | conventional memorty selector. */ |
| 1965 | int from = 2 * (xfrom + screen_size_X * ypos) + ScreenPrimary; |
| 1966 | int to = 2 * (xto + screen_size_X * ypos) + ScreenPrimary; |
| 1967 | |
| 1968 | if (from == to || len <= 0) |
| 1969 | return; |
| 1970 | |
| 1971 | _farsetsel (_dos_ds); |
| 1972 | |
| 1973 | /* The source and destination might overlap, so we need to move |
| 1974 | glyphs non-destructively. */ |
| 1975 | if (from > to) |
| 1976 | { |
| 1977 | for ( ; len; from += 2, to += 2, len--) |
| 1978 | _farnspokew (to, _farnspeekw (from)); |
| 1979 | } |
| 1980 | else |
| 1981 | { |
| 1982 | from += (len - 1) * 2; |
| 1983 | to += (len - 1) * 2; |
| 1984 | for ( ; len; from -= 2, to -= 2, len--) |
| 1985 | _farnspokew (to, _farnspeekw (from)); |
| 1986 | } |
| 1987 | if (screen_virtual_segment) |
| 1988 | dosv_refresh_virtual_screen (ypos * screen_size_X * 2, screen_size_X); |
| 1989 | } |
| 1990 | |
| 1991 | /* Insert and delete glyphs. */ |
| 1992 | static void |
| 1993 | IT_insert_glyphs (f, start, len) |
| 1994 | struct frame *f; |
| 1995 | register struct glyph *start; |
| 1996 | register int len; |
| 1997 | { |
| 1998 | int shift_by_width = screen_size_X - (new_pos_X + len); |
| 1999 | |
| 2000 | /* Shift right the glyphs from the nominal cursor position to the |
| 2001 | end of this line. */ |
| 2002 | IT_copy_glyphs (new_pos_X, new_pos_X + len, shift_by_width, new_pos_Y); |
| 2003 | |
| 2004 | /* Now write the glyphs to be inserted. */ |
| 2005 | IT_write_glyphs (f, start, len); |
| 2006 | } |
| 2007 | |
| 2008 | static void |
| 2009 | IT_delete_glyphs (f, n) |
| 2010 | struct frame *f; |
| 2011 | register int n; |
| 2012 | { |
| 2013 | abort (); |
| 2014 | } |
| 2015 | |
| 2016 | /* set-window-configuration on window.c needs this. */ |
| 2017 | void |
| 2018 | x_set_menu_bar_lines (f, value, oldval) |
| 2019 | struct frame *f; |
| 2020 | Lisp_Object value, oldval; |
| 2021 | { |
| 2022 | set_menu_bar_lines (f, value, oldval); |
| 2023 | } |
| 2024 | |
| 2025 | /* This was copied from xfaces.c */ |
| 2026 | |
| 2027 | extern Lisp_Object Qbackground_color; |
| 2028 | extern Lisp_Object Qforeground_color; |
| 2029 | Lisp_Object Qreverse; |
| 2030 | extern Lisp_Object Qtitle; |
| 2031 | |
| 2032 | /* IT_set_terminal_modes is called when emacs is started, |
| 2033 | resumed, and whenever the screen is redrawn! */ |
| 2034 | |
| 2035 | static void |
| 2036 | IT_set_terminal_modes (struct terminal *term) |
| 2037 | { |
| 2038 | struct tty_display_info *tty; |
| 2039 | |
| 2040 | /* If called with initial terminal, it's too early to do anything |
| 2041 | useful. */ |
| 2042 | if (term->type == output_initial) |
| 2043 | return; |
| 2044 | |
| 2045 | tty = term->display_info.tty; |
| 2046 | |
| 2047 | if (tty->termscript) |
| 2048 | fprintf (tty->termscript, "\n<SET_TERM>"); |
| 2049 | |
| 2050 | screen_size_X = ScreenCols (); |
| 2051 | screen_size_Y = ScreenRows (); |
| 2052 | screen_size = screen_size_X * screen_size_Y; |
| 2053 | |
| 2054 | new_pos_X = new_pos_Y = 0; |
| 2055 | current_pos_X = current_pos_Y = -1; |
| 2056 | |
| 2057 | if (term_setup_done) |
| 2058 | return; |
| 2059 | term_setup_done = 1; |
| 2060 | |
| 2061 | startup_screen_size_X = screen_size_X; |
| 2062 | startup_screen_size_Y = screen_size_Y; |
| 2063 | startup_screen_attrib = ScreenAttrib; |
| 2064 | |
| 2065 | #if __DJGPP__ > 1 |
| 2066 | /* Is DOS/V (or any other RSIS software which relocates |
| 2067 | the screen) installed? */ |
| 2068 | { |
| 2069 | unsigned short es_value; |
| 2070 | __dpmi_regs regs; |
| 2071 | |
| 2072 | regs.h.ah = 0xfe; /* get relocated screen address */ |
| 2073 | if (ScreenPrimary == 0xb0000UL || ScreenPrimary == 0xb8000UL) |
| 2074 | regs.x.es = (ScreenPrimary >> 4) & 0xffff; |
| 2075 | else if (screen_old_address) /* already switched to Japanese mode once */ |
| 2076 | regs.x.es = (screen_old_address >> 4) & 0xffff; |
| 2077 | else |
| 2078 | regs.x.es = ScreenMode () == 7 ? 0xb000 : 0xb800; |
| 2079 | regs.x.di = 0; |
| 2080 | es_value = regs.x.es; |
| 2081 | __dpmi_int (0x10, ®s); |
| 2082 | |
| 2083 | if (regs.x.es != es_value) |
| 2084 | { |
| 2085 | /* screen_old_address is only set if ScreenPrimary does NOT |
| 2086 | already point to the relocated buffer address returned by |
| 2087 | the Int 10h/AX=FEh call above. DJGPP v2.02 and later sets |
| 2088 | ScreenPrimary to that address at startup under DOS/V. */ |
| 2089 | if (regs.x.es != (ScreenPrimary >> 4) & 0xffff) |
| 2090 | screen_old_address = ScreenPrimary; |
| 2091 | screen_virtual_segment = regs.x.es; |
| 2092 | screen_virtual_offset = regs.x.di; |
| 2093 | ScreenPrimary = (screen_virtual_segment << 4) + screen_virtual_offset; |
| 2094 | } |
| 2095 | } |
| 2096 | #endif /* __DJGPP__ > 1 */ |
| 2097 | |
| 2098 | ScreenGetCursor (&startup_pos_Y, &startup_pos_X); |
| 2099 | ScreenRetrieve (startup_screen_buffer = xmalloc (screen_size * 2)); |
| 2100 | |
| 2101 | bright_bg (); |
| 2102 | } |
| 2103 | |
| 2104 | /* IT_reset_terminal_modes is called when emacs is |
| 2105 | suspended or killed. */ |
| 2106 | |
| 2107 | static void |
| 2108 | IT_reset_terminal_modes (struct terminal *term) |
| 2109 | { |
| 2110 | int display_row_start = (int) ScreenPrimary; |
| 2111 | int saved_row_len = startup_screen_size_X * 2; |
| 2112 | int update_row_len = ScreenCols () * 2, current_rows = ScreenRows (); |
| 2113 | int to_next_row = update_row_len; |
| 2114 | unsigned char *saved_row = startup_screen_buffer; |
| 2115 | int cursor_pos_X = ScreenCols () - 1, cursor_pos_Y = ScreenRows () - 1; |
| 2116 | struct tty_display_info *tty = term->display_info.tty; |
| 2117 | |
| 2118 | if (tty->termscript) |
| 2119 | fprintf (tty->termscript, "\n<RESET_TERM>"); |
| 2120 | |
| 2121 | if (!term_setup_done) |
| 2122 | return; |
| 2123 | |
| 2124 | mouse_off (); |
| 2125 | |
| 2126 | /* Leave the video system in the same state as we found it, |
| 2127 | as far as the blink/bright-background bit is concerned. */ |
| 2128 | maybe_enable_blinking (); |
| 2129 | |
| 2130 | /* We have a situation here. |
| 2131 | We cannot just do ScreenUpdate(startup_screen_buffer) because |
| 2132 | the luser could have changed screen dimensions inside Emacs |
| 2133 | and failed (or didn't want) to restore them before killing |
| 2134 | Emacs. ScreenUpdate() uses the *current* screen dimensions and |
| 2135 | thus will happily use memory outside what was allocated for |
| 2136 | `startup_screen_buffer'. |
| 2137 | Thus we only restore as much as the current screen dimensions |
| 2138 | can hold, and clear the rest (if the saved screen is smaller than |
| 2139 | the current) with the color attribute saved at startup. The cursor |
| 2140 | is also restored within the visible dimensions. */ |
| 2141 | |
| 2142 | ScreenAttrib = startup_screen_attrib; |
| 2143 | |
| 2144 | /* Don't restore the screen if we are exiting less than 2 seconds |
| 2145 | after startup: we might be crashing, and the screen might show |
| 2146 | some vital clues to what's wrong. */ |
| 2147 | if (clock () - startup_time >= 2*CLOCKS_PER_SEC) |
| 2148 | { |
| 2149 | ScreenClear (); |
| 2150 | if (screen_virtual_segment) |
| 2151 | dosv_refresh_virtual_screen (0, screen_size); |
| 2152 | |
| 2153 | if (update_row_len > saved_row_len) |
| 2154 | update_row_len = saved_row_len; |
| 2155 | if (current_rows > startup_screen_size_Y) |
| 2156 | current_rows = startup_screen_size_Y; |
| 2157 | |
| 2158 | if (tty->termscript) |
| 2159 | fprintf (tty->termscript, "<SCREEN RESTORED (dimensions=%dx%d)>\n", |
| 2160 | update_row_len / 2, current_rows); |
| 2161 | |
| 2162 | while (current_rows--) |
| 2163 | { |
| 2164 | dosmemput (saved_row, update_row_len, display_row_start); |
| 2165 | if (screen_virtual_segment) |
| 2166 | dosv_refresh_virtual_screen (display_row_start - ScreenPrimary, |
| 2167 | update_row_len / 2); |
| 2168 | saved_row += saved_row_len; |
| 2169 | display_row_start += to_next_row; |
| 2170 | } |
| 2171 | } |
| 2172 | if (startup_pos_X < cursor_pos_X) |
| 2173 | cursor_pos_X = startup_pos_X; |
| 2174 | if (startup_pos_Y < cursor_pos_Y) |
| 2175 | cursor_pos_Y = startup_pos_Y; |
| 2176 | |
| 2177 | ScreenSetCursor (cursor_pos_Y, cursor_pos_X); |
| 2178 | xfree (startup_screen_buffer); |
| 2179 | startup_screen_buffer = NULL; |
| 2180 | |
| 2181 | term_setup_done = 0; |
| 2182 | } |
| 2183 | |
| 2184 | static void |
| 2185 | IT_set_terminal_window (struct frame *f, int foo) |
| 2186 | { |
| 2187 | } |
| 2188 | |
| 2189 | /* Remember the screen colors of the curent frame, to serve as the |
| 2190 | default colors for newly-created frames. */ |
| 2191 | DEFUN ("msdos-remember-default-colors", Fmsdos_remember_default_colors, |
| 2192 | Smsdos_remember_default_colors, 1, 1, 0, |
| 2193 | doc: /* Remember the screen colors of the current frame. */) |
| 2194 | (frame) |
| 2195 | Lisp_Object frame; |
| 2196 | { |
| 2197 | struct frame *f; |
| 2198 | |
| 2199 | CHECK_FRAME (frame); |
| 2200 | f = XFRAME (frame); |
| 2201 | |
| 2202 | /* This function is called after applying default-frame-alist to the |
| 2203 | initial frame. At that time, if reverse-colors option was |
| 2204 | specified in default-frame-alist, it was already applied, and |
| 2205 | frame colors are reversed. */ |
| 2206 | initial_screen_colors[0] = FRAME_FOREGROUND_PIXEL (f); |
| 2207 | initial_screen_colors[1] = FRAME_BACKGROUND_PIXEL (f); |
| 2208 | } |
| 2209 | |
| 2210 | void |
| 2211 | IT_set_frame_parameters (f, alist) |
| 2212 | struct frame *f; |
| 2213 | Lisp_Object alist; |
| 2214 | { |
| 2215 | Lisp_Object tail; |
| 2216 | int i, j, length = XINT (Flength (alist)); |
| 2217 | Lisp_Object *parms |
| 2218 | = (Lisp_Object *) alloca (length * sizeof (Lisp_Object)); |
| 2219 | Lisp_Object *values |
| 2220 | = (Lisp_Object *) alloca (length * sizeof (Lisp_Object)); |
| 2221 | /* Do we have to reverse the foreground and background colors? */ |
| 2222 | int reverse = EQ (Fcdr (Fassq (Qreverse, f->param_alist)), Qt); |
| 2223 | int need_to_reverse, was_reverse = reverse; |
| 2224 | int redraw = 0, fg_set = 0, bg_set = 0; |
| 2225 | unsigned long orig_fg, orig_bg; |
| 2226 | Lisp_Object frame_bg, frame_fg; |
| 2227 | extern Lisp_Object Qdefault, QCforeground, QCbackground; |
| 2228 | struct tty_display_info *tty = FRAME_TTY (f); |
| 2229 | |
| 2230 | /* If we are creating a new frame, begin with the original screen colors |
| 2231 | used for the initial frame. */ |
| 2232 | if (EQ (alist, Vdefault_frame_alist) |
| 2233 | && initial_screen_colors[0] != -1 && initial_screen_colors[1] != -1) |
| 2234 | { |
| 2235 | FRAME_FOREGROUND_PIXEL (f) = initial_screen_colors[0]; |
| 2236 | FRAME_BACKGROUND_PIXEL (f) = initial_screen_colors[1]; |
| 2237 | init_frame_faces (f); |
| 2238 | } |
| 2239 | orig_fg = FRAME_FOREGROUND_PIXEL (f); |
| 2240 | orig_bg = FRAME_BACKGROUND_PIXEL (f); |
| 2241 | frame_fg = Fcdr (Fassq (Qforeground_color, f->param_alist)); |
| 2242 | frame_bg = Fcdr (Fassq (Qbackground_color, f->param_alist)); |
| 2243 | /* frame_fg and frame_bg could be nil if, for example, |
| 2244 | f->param_alist is nil, e.g. if we are called from |
| 2245 | Fmake_terminal_frame. */ |
| 2246 | if (NILP (frame_fg)) |
| 2247 | frame_fg = build_string (unspecified_fg); |
| 2248 | if (NILP (frame_bg)) |
| 2249 | frame_bg = build_string (unspecified_bg); |
| 2250 | |
| 2251 | /* Extract parm names and values into those vectors. */ |
| 2252 | i = 0; |
| 2253 | for (tail = alist; CONSP (tail); tail = Fcdr (tail)) |
| 2254 | { |
| 2255 | Lisp_Object elt; |
| 2256 | |
| 2257 | elt = Fcar (tail); |
| 2258 | parms[i] = Fcar (elt); |
| 2259 | CHECK_SYMBOL (parms[i]); |
| 2260 | values[i] = Fcdr (elt); |
| 2261 | i++; |
| 2262 | } |
| 2263 | |
| 2264 | j = i; |
| 2265 | |
| 2266 | for (i = 0; i < j; i++) |
| 2267 | { |
| 2268 | Lisp_Object prop, val; |
| 2269 | |
| 2270 | prop = parms[i]; |
| 2271 | val = values[i]; |
| 2272 | |
| 2273 | if (EQ (prop, Qreverse)) |
| 2274 | reverse = EQ (val, Qt); |
| 2275 | } |
| 2276 | |
| 2277 | need_to_reverse = reverse && !was_reverse; |
| 2278 | if (tty->termscript && need_to_reverse) |
| 2279 | fprintf (tty->termscript, "<INVERSE-VIDEO>\n"); |
| 2280 | |
| 2281 | /* Now process the alist elements in reverse of specified order. */ |
| 2282 | for (i--; i >= 0; i--) |
| 2283 | { |
| 2284 | Lisp_Object prop, val, frame; |
| 2285 | |
| 2286 | prop = parms[i]; |
| 2287 | val = values[i]; |
| 2288 | |
| 2289 | if (EQ (prop, Qforeground_color)) |
| 2290 | { |
| 2291 | unsigned long new_color = load_color (f, NULL, val, need_to_reverse |
| 2292 | ? LFACE_BACKGROUND_INDEX |
| 2293 | : LFACE_FOREGROUND_INDEX); |
| 2294 | if (new_color != FACE_TTY_DEFAULT_COLOR |
| 2295 | && new_color != FACE_TTY_DEFAULT_FG_COLOR |
| 2296 | && new_color != FACE_TTY_DEFAULT_BG_COLOR) |
| 2297 | { |
| 2298 | FRAME_FOREGROUND_PIXEL (f) = new_color; |
| 2299 | /* Make sure the foreground of the default face for this |
| 2300 | frame is changed as well. */ |
| 2301 | XSETFRAME (frame, f); |
| 2302 | Finternal_set_lisp_face_attribute (Qdefault, QCforeground, |
| 2303 | val, frame); |
| 2304 | fg_set = 1; |
| 2305 | redraw = 1; |
| 2306 | if (tty->termscript) |
| 2307 | fprintf (tty->termscript, "<FGCOLOR %lu>\n", new_color); |
| 2308 | } |
| 2309 | } |
| 2310 | else if (EQ (prop, Qbackground_color)) |
| 2311 | { |
| 2312 | unsigned long new_color = load_color (f, NULL, val, need_to_reverse |
| 2313 | ? LFACE_FOREGROUND_INDEX |
| 2314 | : LFACE_BACKGROUND_INDEX); |
| 2315 | if (new_color != FACE_TTY_DEFAULT_COLOR |
| 2316 | && new_color != FACE_TTY_DEFAULT_FG_COLOR |
| 2317 | && new_color != FACE_TTY_DEFAULT_BG_COLOR) |
| 2318 | { |
| 2319 | FRAME_BACKGROUND_PIXEL (f) = new_color; |
| 2320 | /* Make sure the background of the default face for this |
| 2321 | frame is changed as well. */ |
| 2322 | XSETFRAME (frame, f); |
| 2323 | Finternal_set_lisp_face_attribute (Qdefault, QCbackground, |
| 2324 | val, frame); |
| 2325 | bg_set = 1; |
| 2326 | redraw = 1; |
| 2327 | if (tty->termscript) |
| 2328 | fprintf (tty->termscript, "<BGCOLOR %lu>\n", new_color); |
| 2329 | } |
| 2330 | } |
| 2331 | else if (EQ (prop, Qtitle)) |
| 2332 | { |
| 2333 | x_set_title (f, val); |
| 2334 | if (tty->termscript) |
| 2335 | fprintf (tty->termscript, "<TITLE: %s>\n", SDATA (val)); |
| 2336 | } |
| 2337 | else if (EQ (prop, Qcursor_type)) |
| 2338 | { |
| 2339 | IT_set_cursor_type (f, val); |
| 2340 | if (tty->termscript) |
| 2341 | fprintf (tty->termscript, "<CTYPE: %s>\n", |
| 2342 | EQ (val, Qbar) || EQ (val, Qhbar) |
| 2343 | || CONSP (val) && (EQ (XCAR (val), Qbar) |
| 2344 | || EQ (XCAR (val), Qhbar)) |
| 2345 | ? "bar" : "box"); |
| 2346 | } |
| 2347 | else if (EQ (prop, Qtty_type)) |
| 2348 | { |
| 2349 | internal_terminal_init (); |
| 2350 | if (tty->termscript) |
| 2351 | fprintf (tty->termscript, "<TERM_INIT done, TTY_TYPE: %.*s>\n", |
| 2352 | SBYTES (val), SDATA (val)); |
| 2353 | } |
| 2354 | store_frame_param (f, prop, val); |
| 2355 | } |
| 2356 | |
| 2357 | /* If they specified "reverse", but not the colors, we need to swap |
| 2358 | the current frame colors. */ |
| 2359 | if (need_to_reverse) |
| 2360 | { |
| 2361 | Lisp_Object frame; |
| 2362 | |
| 2363 | if (!fg_set) |
| 2364 | { |
| 2365 | XSETFRAME (frame, f); |
| 2366 | Finternal_set_lisp_face_attribute (Qdefault, QCforeground, |
| 2367 | tty_color_name (f, orig_bg), |
| 2368 | frame); |
| 2369 | redraw = 1; |
| 2370 | } |
| 2371 | if (!bg_set) |
| 2372 | { |
| 2373 | XSETFRAME (frame, f); |
| 2374 | Finternal_set_lisp_face_attribute (Qdefault, QCbackground, |
| 2375 | tty_color_name (f, orig_fg), |
| 2376 | frame); |
| 2377 | redraw = 1; |
| 2378 | } |
| 2379 | } |
| 2380 | |
| 2381 | if (redraw) |
| 2382 | { |
| 2383 | face_change_count++; /* forces xdisp.c to recompute basic faces */ |
| 2384 | if (f == SELECTED_FRAME()) |
| 2385 | redraw_frame (f); |
| 2386 | } |
| 2387 | } |
| 2388 | |
| 2389 | extern void init_frame_faces (FRAME_PTR); |
| 2390 | |
| 2391 | #endif /* !HAVE_X_WINDOWS */ |
| 2392 | |
| 2393 | |
| 2394 | /* Do we need the internal terminal? */ |
| 2395 | |
| 2396 | void |
| 2397 | internal_terminal_init () |
| 2398 | { |
| 2399 | static int init_needed = 1; |
| 2400 | char *term = getenv ("TERM"), *colors; |
| 2401 | struct frame *sf = SELECTED_FRAME(); |
| 2402 | struct tty_display_info *tty; |
| 2403 | |
| 2404 | #ifdef HAVE_X_WINDOWS |
| 2405 | if (!inhibit_window_system) |
| 2406 | return; |
| 2407 | #endif |
| 2408 | |
| 2409 | /* If this is the initial terminal, we are done here. */ |
| 2410 | if (sf->output_method == output_initial) |
| 2411 | return; |
| 2412 | |
| 2413 | internal_terminal |
| 2414 | = (!noninteractive) && term && !strcmp (term, "internal"); |
| 2415 | |
| 2416 | #ifndef HAVE_X_WINDOWS |
| 2417 | if (!internal_terminal || inhibit_window_system) |
| 2418 | { |
| 2419 | sf->output_method = output_termcap; |
| 2420 | return; |
| 2421 | } |
| 2422 | |
| 2423 | tty = FRAME_TTY (sf); |
| 2424 | current_kboard->Vwindow_system = Qpc; |
| 2425 | sf->output_method = output_msdos_raw; |
| 2426 | if (init_needed) |
| 2427 | { |
| 2428 | if (!tty->termscript && getenv ("EMACSTEST")) |
| 2429 | tty->termscript = fopen (getenv ("EMACSTEST"), "wt"); |
| 2430 | if (tty->termscript) |
| 2431 | { |
| 2432 | time_t now = time (NULL); |
| 2433 | struct tm *tnow = localtime (&now); |
| 2434 | char tbuf[100]; |
| 2435 | |
| 2436 | strftime (tbuf, sizeof (tbuf) - 1, "%a %b %e %Y %H:%M:%S %Z", tnow); |
| 2437 | fprintf (tty->termscript, "\nEmacs session started at %s\n", tbuf); |
| 2438 | fprintf (tty->termscript, "=====================\n\n"); |
| 2439 | } |
| 2440 | |
| 2441 | Vinitial_window_system = Qpc; |
| 2442 | Vwindow_system_version = make_number (23); /* RE Emacs version */ |
| 2443 | tty->terminal->type = output_msdos_raw; |
| 2444 | |
| 2445 | /* If Emacs was dumped on DOS/V machine, forget the stale VRAM |
| 2446 | address. */ |
| 2447 | screen_old_address = 0; |
| 2448 | |
| 2449 | /* Forget the stale screen colors as well. */ |
| 2450 | initial_screen_colors[0] = initial_screen_colors[1] = -1; |
| 2451 | |
| 2452 | FRAME_BACKGROUND_PIXEL (SELECTED_FRAME ()) = 7; /* White */ |
| 2453 | FRAME_FOREGROUND_PIXEL (SELECTED_FRAME ()) = 0; /* Black */ |
| 2454 | bright_bg (); |
| 2455 | colors = getenv ("EMACSCOLORS"); |
| 2456 | if (colors && strlen (colors) >= 2) |
| 2457 | { |
| 2458 | /* The colors use 4 bits each (we enable bright background). */ |
| 2459 | if (isdigit (colors[0])) |
| 2460 | colors[0] -= '0'; |
| 2461 | else if (isxdigit (colors[0])) |
| 2462 | colors[0] -= (isupper (colors[0]) ? 'A' : 'a') - 10; |
| 2463 | if (colors[0] >= 0 && colors[0] < 16) |
| 2464 | FRAME_FOREGROUND_PIXEL (SELECTED_FRAME ()) = colors[0]; |
| 2465 | if (isdigit (colors[1])) |
| 2466 | colors[1] -= '0'; |
| 2467 | else if (isxdigit (colors[1])) |
| 2468 | colors[1] -= (isupper (colors[1]) ? 'A' : 'a') - 10; |
| 2469 | if (colors[1] >= 0 && colors[1] < 16) |
| 2470 | FRAME_BACKGROUND_PIXEL (SELECTED_FRAME ()) = colors[1]; |
| 2471 | } |
| 2472 | the_only_display_info.mouse_face_mouse_frame = NULL; |
| 2473 | the_only_display_info.mouse_face_deferred_gc = 0; |
| 2474 | the_only_display_info.mouse_face_beg_row = |
| 2475 | the_only_display_info.mouse_face_beg_col = -1; |
| 2476 | the_only_display_info.mouse_face_end_row = |
| 2477 | the_only_display_info.mouse_face_end_col = -1; |
| 2478 | the_only_display_info.mouse_face_face_id = DEFAULT_FACE_ID; |
| 2479 | the_only_display_info.mouse_face_window = Qnil; |
| 2480 | the_only_display_info.mouse_face_mouse_x = |
| 2481 | the_only_display_info.mouse_face_mouse_y = 0; |
| 2482 | the_only_display_info.mouse_face_defer = 0; |
| 2483 | the_only_display_info.mouse_face_hidden = 0; |
| 2484 | |
| 2485 | if (have_mouse) /* detected in dos_ttraw, which see */ |
| 2486 | { |
| 2487 | have_mouse = 1; /* enable mouse */ |
| 2488 | mouse_visible = 0; |
| 2489 | mouse_setup_buttons (mouse_button_count); |
| 2490 | tty->terminal->mouse_position_hook = &mouse_get_pos; |
| 2491 | mouse_init (); |
| 2492 | } |
| 2493 | |
| 2494 | if (tty->termscript && screen_size) |
| 2495 | fprintf (tty->termscript, "<SCREEN SAVED (dimensions=%dx%d)>\n", |
| 2496 | screen_size_X, screen_size_Y); |
| 2497 | |
| 2498 | init_frame_faces (sf); |
| 2499 | init_needed = 0; |
| 2500 | } |
| 2501 | #endif |
| 2502 | } |
| 2503 | |
| 2504 | void |
| 2505 | initialize_msdos_display (struct terminal *term) |
| 2506 | { |
| 2507 | term->rif = 0; /* we don't support window-based display */ |
| 2508 | term->cursor_to_hook = term->raw_cursor_to_hook = IT_cursor_to; |
| 2509 | term->clear_to_end_hook = IT_clear_to_end; |
| 2510 | term->clear_frame_hook = IT_clear_screen; |
| 2511 | term->clear_end_of_line_hook = IT_clear_end_of_line; |
| 2512 | term->ins_del_lines_hook = 0; |
| 2513 | term->insert_glyphs_hook = IT_insert_glyphs; |
| 2514 | term->write_glyphs_hook = IT_write_glyphs; |
| 2515 | term->delete_glyphs_hook = IT_delete_glyphs; |
| 2516 | term->ring_bell_hook = IT_ring_bell; |
| 2517 | term->reset_terminal_modes_hook = IT_reset_terminal_modes; |
| 2518 | term->set_terminal_modes_hook = IT_set_terminal_modes; |
| 2519 | term->set_terminal_window_hook = IT_set_terminal_window; |
| 2520 | term->update_begin_hook = IT_update_begin; |
| 2521 | term->update_end_hook = IT_update_end; |
| 2522 | term->frame_up_to_date_hook = IT_frame_up_to_date; |
| 2523 | term->mouse_position_hook = 0; /* set later by dos_ttraw */ |
| 2524 | term->frame_rehighlight_hook = 0; |
| 2525 | term->frame_raise_lower_hook = 0; |
| 2526 | term->set_vertical_scroll_bar_hook = 0; |
| 2527 | term->condemn_scroll_bars_hook = 0; |
| 2528 | term->redeem_scroll_bar_hook = 0; |
| 2529 | term->judge_scroll_bars_hook = 0; |
| 2530 | term->read_socket_hook = &tty_read_avail_input; /* from keyboard.c */ |
| 2531 | } |
| 2532 | |
| 2533 | dos_get_saved_screen (screen, rows, cols) |
| 2534 | char **screen; |
| 2535 | int *rows; |
| 2536 | int *cols; |
| 2537 | { |
| 2538 | #ifndef HAVE_X_WINDOWS |
| 2539 | *screen = startup_screen_buffer; |
| 2540 | *cols = startup_screen_size_X; |
| 2541 | *rows = startup_screen_size_Y; |
| 2542 | return *screen != (char *)0; |
| 2543 | #else |
| 2544 | return 0; |
| 2545 | #endif |
| 2546 | } |
| 2547 | |
| 2548 | #ifndef HAVE_X_WINDOWS |
| 2549 | |
| 2550 | /* We are not X, but we can emulate it well enough for our needs... */ |
| 2551 | void |
| 2552 | check_x (void) |
| 2553 | { |
| 2554 | if (! FRAME_MSDOS_P (SELECTED_FRAME())) |
| 2555 | error ("Not running under a window system"); |
| 2556 | } |
| 2557 | |
| 2558 | #endif |
| 2559 | |
| 2560 | \f |
| 2561 | /* ----------------------- Keyboard control ---------------------- |
| 2562 | * |
| 2563 | * Keymaps reflect the following keyboard layout: |
| 2564 | * |
| 2565 | * 0 1 2 3 4 5 6 7 8 9 10 11 12 BS |
| 2566 | * TAB 15 16 17 18 19 20 21 22 23 24 25 26 (41) |
| 2567 | * CLOK 30 31 32 33 34 35 36 37 38 39 40 (41) RET |
| 2568 | * SH () 45 46 47 48 49 50 51 52 53 54 SHIFT |
| 2569 | * SPACE |
| 2570 | */ |
| 2571 | |
| 2572 | #define Ignore 0x0000 |
| 2573 | #define Normal 0x0000 /* normal key - alt changes scan-code */ |
| 2574 | #define FctKey 0x1000 /* func key if c == 0, else c */ |
| 2575 | #define Special 0x2000 /* func key even if c != 0 */ |
| 2576 | #define ModFct 0x3000 /* special if mod-keys, else 'c' */ |
| 2577 | #define Map 0x4000 /* alt scan-code, map to unshift/shift key */ |
| 2578 | #define KeyPad 0x5000 /* map to insert/kp-0 depending on c == 0xe0 */ |
| 2579 | #define Grey 0x6000 /* Grey keypad key */ |
| 2580 | |
| 2581 | #define Alt 0x0100 /* alt scan-code */ |
| 2582 | #define Ctrl 0x0200 /* ctrl scan-code */ |
| 2583 | #define Shift 0x0400 /* shift scan-code */ |
| 2584 | |
| 2585 | static int extended_kbd; /* 101 (102) keyboard present. */ |
| 2586 | |
| 2587 | struct kbd_translate { |
| 2588 | unsigned char sc; |
| 2589 | unsigned char ch; |
| 2590 | unsigned short code; |
| 2591 | }; |
| 2592 | |
| 2593 | struct dos_keyboard_map |
| 2594 | { |
| 2595 | char *unshifted; |
| 2596 | char *shifted; |
| 2597 | char *alt_gr; |
| 2598 | struct kbd_translate *translate_table; |
| 2599 | }; |
| 2600 | |
| 2601 | |
| 2602 | static struct dos_keyboard_map us_keyboard = { |
| 2603 | /* 0 1 2 3 4 5 */ |
| 2604 | /* 01234567890123456789012345678901234567890 12345678901234 */ |
| 2605 | "`1234567890-= qwertyuiop[] asdfghjkl;'\\ zxcvbnm,./ ", |
| 2606 | /* 0123456789012345678901234567890123456789 012345678901234 */ |
| 2607 | "~!@#$%^&*()_+ QWERTYUIOP{} ASDFGHJKL:\"| ZXCVBNM<>? ", |
| 2608 | 0, /* no Alt-Gr key */ |
| 2609 | 0 /* no translate table */ |
| 2610 | }; |
| 2611 | |
| 2612 | static struct dos_keyboard_map fr_keyboard = { |
| 2613 | /* 0 1 2 3 4 5 */ |
| 2614 | /* 012 3456789012345678901234567890123456789012345678901234 */ |
| 2615 |