w32console.c 15.1 KB
Newer Older
Richard M. Stallman's avatar
Richard M. Stallman committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
/* Terminal hooks for Windows NT port of GNU Emacs.
   Copyright (C) 1992 Free Software Foundation, Inc.

   This file is part of GNU Emacs.

   GNU Emacs is free software; you can redistribute it and/or modify it
   under the terms of the GNU General Public License as published by the
   Free Software Foundation; either version 2, or (at your option) any later
   version.

   GNU Emacs is distributed in the hope that it will be useful, but WITHOUT
   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
   more details.

   You should have received a copy of the GNU General Public License along
   with GNU Emacs; see the file COPYING.  If not, write to the Free Software
   Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.

   Tim Fleehart (apollo@online.com)		1-17-92
   Geoff Voelker (voelker@cs.washington.edu)	9-12-93
*/


25 26
#include <config.h>

Richard M. Stallman's avatar
Richard M. Stallman committed
27 28 29 30 31 32 33 34 35 36 37
#include <stdlib.h>
#include <stdio.h>
#include <windows.h>

#include "lisp.h"
#include "frame.h"
#include "disptab.h"
#include "termhooks.h"

#include "ntinevt.h"

Karl Heuer's avatar
Karl Heuer committed
38
/* from window.c */
Richard M. Stallman's avatar
Richard M. Stallman committed
39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102
extern Lisp_Object Frecenter ();

/* from keyboard.c */
extern int detect_input_pending ();

/* from sysdep.c */
extern int read_input_pending ();

extern FRAME_PTR updating_frame;
extern int meta_key;

static void move_cursor (int row, int col);
static void clear_to_end (void);
static void clear_frame (void);
static void clear_end_of_line (int);
static void ins_del_lines (int vpos, int n);
static void change_line_highlight (int, int, int);
static void reassert_line_highlight (int, int);
static void insert_glyphs (GLYPH *start, int len);
static void write_glyphs (GLYPH *string, int len);
static void delete_glyphs (int n);
static void ring_bell (void);
static void reset_terminal_modes (void);
static void set_terminal_modes (void);
static void set_terminal_window (int size);
static void update_begin (FRAME_PTR f);
static void update_end (FRAME_PTR f);
static void reset_kbd (void);
static void unset_kbd (void);
static int  hl_mode (int new_highlight);

void
DebPrint ()
{
}

/* Init hook called in init_keyboard.  */
void (*keyboard_init_hook)(void) = reset_kbd;
    
COORD	cursor_coords;
HANDLE	prev_screen, cur_screen;
UCHAR	char_attr, char_attr_normal, char_attr_reverse;
HANDLE  keyboard_handle;


/* Setting this as the ctrl handler prevents emacs from being killed when
 * someone hits ^C in a 'suspended' session (child shell).  */
BOOL
ctrl_c_handler (unsigned long type)
{
  return (type == CTRL_C_EVENT) ? TRUE : FALSE;
}

/* If we're updating a frame, use it as the current frame
   Otherwise, use the selected frame.  */
#define PICK_FRAME() (updating_frame ? updating_frame : selected_frame)

/* Move the cursor to (row, col).  */
void
move_cursor (int row, int col)
{
  cursor_coords.X = col;
  cursor_coords.Y = row;
  
Karl Heuer's avatar
Karl Heuer committed
103
  if (updating_frame == (FRAME_PTR) NULL)
Richard M. Stallman's avatar
Richard M. Stallman committed
104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384
    {
      SetConsoleCursorPosition (cur_screen, cursor_coords);
    }
}

/* Clear from cursor to end of screen.  */
void
clear_to_end (void)
{
  FRAME_PTR f = PICK_FRAME ();
  
  clear_end_of_line (FRAME_WIDTH (f) - 1);
  ins_del_lines (cursor_coords.Y, FRAME_HEIGHT (f) - cursor_coords.Y - 1);
}

/* Clear the frame.  */
void
clear_frame (void)
{
  SMALL_RECT scroll;
  COORD	     dest;
  CHAR_INFO  fill;
  FRAME_PTR  f = PICK_FRAME ();
  
  hl_mode (0);
  
  scroll.Top = 0;
  scroll.Bottom = FRAME_HEIGHT (f) - 1;
  scroll.Left = 0;
  scroll.Right = FRAME_WIDTH (f) - 1;
  
  dest.Y = FRAME_HEIGHT (f);
  dest.X = 0;
  
  fill.Char.AsciiChar = 0x20;
  fill.Attributes = char_attr;
  
  ScrollConsoleScreenBuffer (cur_screen, &scroll, NULL, dest, &fill);
  move_cursor (0, 0);
}


static GLYPH glyph_base[256];
static BOOL  ceol_initialized = FALSE;

/* Clear from Cursor to end (what's "standout marker"?).  */
void
clear_end_of_line (int end)
{
  if (!ceol_initialized)
    {
      int i;
      for (i = 0; i < 256; i++)
        {
	  glyph_base[i] = SPACEGLYPH;	/* empty space	*/
        }
      ceol_initialized = TRUE;
    }
  write_glyphs (glyph_base, end - cursor_coords.X);	/* fencepost ?	*/
}

/* Insert n lines at vpos. if n is negative delete -n lines.  */
void
ins_del_lines (int vpos, int n)
{
  int	     i, nb, save_highlight;
  SMALL_RECT scroll;
  COORD	     dest;
  CHAR_INFO  fill;
  FRAME_PTR  f = PICK_FRAME ();

  if (n < 0)
    {
      scroll.Top = vpos - n;
      scroll.Bottom = FRAME_HEIGHT (f);
      dest.Y = vpos;
    }
  else
    {
      scroll.Top = vpos;
      scroll.Bottom = FRAME_HEIGHT (f) - n;
      dest.Y = vpos + n;
    }
  scroll.Left = 0;
  scroll.Right = FRAME_WIDTH (f);
  
  dest.X = 0;
  
  save_highlight = hl_mode (0);
  
  fill.Char.AsciiChar = 0x20;
  fill.Attributes = char_attr;
  
  ScrollConsoleScreenBuffer (cur_screen, &scroll, NULL, dest, &fill);

  /* Here we have to deal with a win32 console flake: If the scroll
     region looks like abc and we scroll c to a and fill with d we get
     cbd... if we scroll block c one line at a time to a, we get cdd...
     Emacs expects cdd consistently... So we have to deal with that
     here... (this also occurs scrolling the same way in the other
     direction.  */

  if (n > 0)
    {
      if (scroll.Bottom < dest.Y)
        {
	  for (i = scroll.Bottom; i < dest.Y; i++)
            {
	      move_cursor (i, 0);
	      clear_end_of_line (FRAME_WIDTH (f));
            }
        }
    }
  else
    {
      nb = dest.Y + (scroll.Bottom - scroll.Top) + 1;

      if (nb < scroll.Top)
        { 
	  for (i = nb; i < scroll.Top; i++)
            {
	      move_cursor (i, 0);
	      clear_end_of_line (FRAME_WIDTH (f));
            }
        }
    }
  
  cursor_coords.X = 0;
  cursor_coords.Y = vpos;
  
  hl_mode (save_highlight);
}

/* Changes attribute to use when drawing characters to control.  */
static int
hl_mode (int new_highlight)
{
  static int highlight = 0;
  int old_highlight;
  
  old_highlight = highlight;
  highlight = (new_highlight != 0);
  if (highlight)
    {
      char_attr = char_attr_reverse;
    }
  else
    {
      char_attr = char_attr_normal;
    }
  return old_highlight;
}

/* Call this when about to modify line at position VPOS and change whether it
   is highlighted.  */
void
change_line_highlight (int new_highlight, int vpos, int first_unused_hpos)
{
  hl_mode (new_highlight);
  move_cursor (vpos, 0);
  clear_end_of_line (first_unused_hpos);
}

/* External interface to control of standout mode. Call this when about to
 * modify line at position VPOS and not change whether it is highlighted.  */
void
reassert_line_highlight (int highlight, int vpos)
{
  hl_mode (highlight);
  vpos;				/* pedantic compiler silencer */
}

#undef	LEFT
#undef	RIGHT
#define	LEFT	1
#define	RIGHT	0

void
scroll_line (int dist, int direction)
{
  /* The idea here is to implement a horizontal scroll in one line to
     implement delete and half of insert.  */
  SMALL_RECT scroll;
  COORD	     dest;
  CHAR_INFO  fill;
  FRAME_PTR  f = PICK_FRAME ();
  
  scroll.Top = cursor_coords.Y;
  scroll.Bottom = cursor_coords.Y;
  
  if (direction == LEFT)
    {
      scroll.Left = cursor_coords.X + dist;
      scroll.Right = FRAME_WIDTH (f) - 1;
    }
  else
    {
      scroll.Left = cursor_coords.X;
      scroll.Right = FRAME_WIDTH (f) - dist - 1;
    }
  
  dest.X = cursor_coords.X;
  dest.Y = cursor_coords.Y;
  
  fill.Char.AsciiChar = 0x20;
  fill.Attributes = char_attr;
  
  ScrollConsoleScreenBuffer (cur_screen, &scroll, NULL, dest, &fill);
}


/* If start is zero insert blanks instead of a string at start ?. */
void
insert_glyphs (register GLYPH *start, register int len)
{
  scroll_line (len, RIGHT);

  /* Move len chars to the right starting at cursor_coords, fill with blanks */
  if (start)
    {
      /* Print the first len characters of start, cursor_coords.X adjusted
	 by write_glyphs.  */
	
      write_glyphs (start, len);
    }
  else
    {
      clear_end_of_line (cursor_coords.X + len);
    }
}

void
write_glyphs (register GLYPH *string, register int len)
{
  register unsigned int glyph_len = GLYPH_TABLE_LENGTH;
  Lisp_Object *glyph_table = GLYPH_TABLE_BASE;
  FRAME_PTR f = PICK_FRAME ();
  register char *ptr;
  GLYPH glyph;
  WORD *attrs;
  char *chars;
  int i;
  
  attrs = alloca (len * sizeof (*attrs));
  chars = alloca (len * sizeof (*chars));
  if (attrs == NULL || chars == NULL)
    {
      printf ("alloca failed in write_glyphs\n");
      return;
    }
  
  /* We have to deal with the glyph indirection...go over the glyph
     buffer and extract the characters.  */
  ptr = chars;
  while (--len >= 0)
    {
      glyph = *string++;

      if (glyph > glyph_len)
        {
	  *ptr++ = glyph & 0xFF;
	  continue;
	}
      GLYPH_FOLLOW_ALIASES (glyph_table, glyph_len, glyph);
      if (GLYPH_FACE (fixfix, glyph) != 0)
	printf ("Glyph face is %d\n", GLYPH_FACE (fixfix, glyph));
      if (GLYPH_SIMPLE_P (glyph_table, glyph_len, glyph))
        {
	  *ptr++ = glyph & 0xFF;
	  continue;
	}
      for (i = 0; i < GLYPH_LENGTH (glyph_table, glyph); i++)
        {
	  *ptr++ = (GLYPH_STRING (glyph_table, glyph))[i];
	}
    }
  
  /* Number of characters we have in the buffer.  */
  len = ptr-chars;
  
  /* Fill in the attributes for these characters.  */
385 386
  for (i = 0; i < len; i++)
    attrs[i] = char_attr;
Richard M. Stallman's avatar
Richard M. Stallman committed
387 388 389 390
  
  /* Write the attributes.  */
  if (!WriteConsoleOutputAttribute (cur_screen, attrs, len, cursor_coords, &i))
    {
Karl Heuer's avatar
Karl Heuer committed
391
      printf ("Failed writing console attributes: %d\n", GetLastError ());
Richard M. Stallman's avatar
Richard M. Stallman committed
392 393 394 395 396 397
      fflush (stdout);
    }

  /* Write the characters.  */
  if (!WriteConsoleOutputCharacter (cur_screen, chars, len, cursor_coords, &i))
    {
Karl Heuer's avatar
Karl Heuer committed
398
      printf ("Failed writing console characters: %d\n", GetLastError ());
Richard M. Stallman's avatar
Richard M. Stallman committed
399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415
      fflush (stdout);
    }
  
  cursor_coords.X += len;
  move_cursor (cursor_coords.Y, cursor_coords.X);
}

void
delete_glyphs (int n)
{
  /* delete chars means scroll chars from cursor_coords.X + n to 
     cursor_coords.X, anything beyond the edge of the screen should 
     come out empty...  */

  scroll_line (n, LEFT);
}

Karl Heuer's avatar
Karl Heuer committed
416 417
static unsigned int sound_type = 0xFFFFFFFF;

Richard M. Stallman's avatar
Richard M. Stallman committed
418 419 420
void
ring_bell (void)
{
Karl Heuer's avatar
Karl Heuer committed
421 422 423 424
  if (sound_type == 0xFFFFFFFF) 
      Beep (666, 100);
  else
      MessageBeep (sound_type);
Richard M. Stallman's avatar
Richard M. Stallman committed
425 426
}

Karl Heuer's avatar
Karl Heuer committed
427 428 429 430 431 432 433
DEFUN ("set-message-beep", Fset_message_beep, Sset_message_beep, 1, 1, 0,
       "Set the sound generated when the bell is rung.\n\
SOUND is 'asterisk, 'exclamation, 'hand, 'question, or 'ok\n\
to use the corresponding system sound for the bell.\n\
SOUND is nil to use the normal beep.")
     (sound)
     Lisp_Object sound;
Richard M. Stallman's avatar
Richard M. Stallman committed
434
{
Karl Heuer's avatar
Karl Heuer committed
435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452
  CHECK_SYMBOL (sound, 0);

  if (NILP (sound)) 
      sound_type = 0xFFFFFFFF;
  else if (EQ (sound, intern ("asterisk")))
      sound_type = MB_ICONASTERISK;
  else if (EQ (sound, intern ("exclamation"))) 
      sound_type = MB_ICONEXCLAMATION;
  else if (EQ (sound, intern ("hand"))) 
      sound_type = MB_ICONHAND;
  else if (EQ (sound, intern ("question"))) 
      sound_type = MB_ICONQUESTION;
  else if (EQ (sound, intern ("ok"))) 
      sound_type = MB_OK;
  else
      sound_type = 0xFFFFFFFF;

  return sound;
Richard M. Stallman's avatar
Richard M. Stallman committed
453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492
}

/* Put our console back up, for ending a suspended session.  */
void
take_console (void)
{
  reset_kbd ();
  SetConsoleActiveScreenBuffer (cur_screen);
}
   
void
reset_terminal_modes (void)
{
  unset_kbd ();
  SetConsoleActiveScreenBuffer (prev_screen);
}

void
set_terminal_modes (void)
{
  CONSOLE_CURSOR_INFO cci;

  if (cur_screen == NULL)
    {
      reset_kbd ();
      cur_screen = CreateConsoleScreenBuffer (GENERIC_READ | GENERIC_WRITE,
                                              0, NULL,
                                              CONSOLE_TEXTMODE_BUFFER,
                                              NULL);

      if (cur_screen == INVALID_HANDLE_VALUE)
        {
	  printf ("CreateConsoleScreenBuffer failed in ResetTerm\n");
	  printf ("LastError = 0x%lx\n", GetLastError ());
	  fflush (stdout);
	  exit (0);
	}

      SetConsoleActiveScreenBuffer (cur_screen);

493 494
      /* make cursor big and visible (100 on Win95 makes it disappear)  */
      cci.dwSize = 99;
Richard M. Stallman's avatar
Richard M. Stallman committed
495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621
      cci.bVisible = TRUE;
      (void) SetConsoleCursorInfo (cur_screen, &cci);
    }
}

/* hmmm... perhaps these let us bracket screen changes so that we can flush
   clumps rather than one-character-at-a-time...
   
   we'll start with not moving the cursor while an update is in progress.  */
void
update_begin (FRAME_PTR f)
{
}

void
update_end (FRAME_PTR f)
{
  SetConsoleCursorPosition (cur_screen, cursor_coords);
}

void
set_terminal_window (int size)
{
}

void
unset_kbd (void)
{
  SetConsoleMode (keyboard_handle, ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT |
		  ENABLE_ECHO_INPUT | ENABLE_MOUSE_INPUT);
}

void
reset_kbd (void)
{
  keyboard_handle = GetStdHandle (STD_INPUT_HANDLE);
  SetConsoleMode (keyboard_handle, ENABLE_MOUSE_INPUT | ENABLE_WINDOW_INPUT);
}

typedef int (*term_hook) ();

void
initialize_win_nt_display (void)
{
  CONSOLE_SCREEN_BUFFER_INFO	info;
  
  cursor_to_hook		= (term_hook) move_cursor;
  raw_cursor_to_hook		= (term_hook) move_cursor;
  clear_to_end_hook		= (term_hook) clear_to_end;
  clear_frame_hook		= (term_hook) clear_frame;
  clear_end_of_line_hook	= (term_hook) clear_end_of_line;
  ins_del_lines_hook		= (term_hook) ins_del_lines;
  change_line_highlight_hook	= (term_hook) change_line_highlight;
  reassert_line_highlight_hook  = (term_hook) reassert_line_highlight;
  insert_glyphs_hook		= (term_hook) insert_glyphs;
  write_glyphs_hook		= (term_hook) write_glyphs;
  delete_glyphs_hook		= (term_hook) delete_glyphs;
  ring_bell_hook		= (term_hook) ring_bell;
  reset_terminal_modes_hook	= (term_hook) reset_terminal_modes;
  set_terminal_modes_hook	= (term_hook) set_terminal_modes;
  set_terminal_window_hook	= (term_hook) set_terminal_window;
  update_begin_hook		= (term_hook) update_begin;
  update_end_hook		= (term_hook) update_end;
  
  read_socket_hook = win32_read_socket;
  mouse_position_hook = win32_mouse_position;
  
  prev_screen = GetStdHandle (STD_OUTPUT_HANDLE);
  
  set_terminal_modes ();
  
  GetConsoleScreenBufferInfo (cur_screen, &info);
  
  meta_key = 1;
  char_attr = info.wAttributes & 0xFF;
  char_attr_normal = char_attr;
  char_attr_reverse = ((char_attr & 0xf) << 4) + ((char_attr & 0xf0) >> 4);
  
  FRAME_HEIGHT (selected_frame) = info.dwSize.Y;	/* lines per page */
  FRAME_WIDTH (selected_frame) = info.dwSize.X;  /* characters per line */
  
  move_cursor (0, 0);
  
  clear_frame ();
}

DEFUN ("set-screen-color", Fset_screen_color, Sset_screen_color, 2, 2, 0,
       "Set screen colors.")
    (foreground, background)
    Lisp_Object foreground;
    Lisp_Object background;
{
  char_attr_normal = XFASTINT (foreground) + (XFASTINT (background) << 4);
  char_attr_reverse = XFASTINT (background) + (XFASTINT (foreground) << 4);

  Frecenter (Qnil);
  return Qt;
}

DEFUN ("set-cursor-size", Fset_cursor_size, Sset_cursor_size, 1, 1, 0,
       "Set cursor size.")
    (size)
    Lisp_Object size;
{
  CONSOLE_CURSOR_INFO cci;
  cci.dwSize = XFASTINT (size);
  cci.bVisible = TRUE;
  (void) SetConsoleCursorInfo (cur_screen, &cci);
  
  return Qt;
}

void
pixel_to_glyph_coords (FRAME_PTR f, int pix_x, int pix_y, int *x, int *y,
		      void *bounds, int noclip)
{
  *x = pix_x;
  *y = pix_y;
}

void
glyph_to_pixel_coords (FRAME_PTR f, int x, int y, int *pix_x, int *pix_y)
{
  *pix_x = x;
  *pix_y = y;
}

Karl Heuer's avatar
Karl Heuer committed
622
void
Richard M. Stallman's avatar
Richard M. Stallman committed
623 624 625 626
syms_of_ntterm ()
{
  defsubr (&Sset_screen_color);
  defsubr (&Sset_cursor_size);
Karl Heuer's avatar
Karl Heuer committed
627
  defsubr (&Sset_message_beep);
Richard M. Stallman's avatar
Richard M. Stallman committed
628
}