1: /* X Communication module for terminals which understand the X protocol.
   2:    Copyright (C) 1985 Free Software Foundation, Inc.
   3: 
   4: This file is part of GNU Emacs.
   5: 
   6: GNU Emacs is distributed in the hope that it will be useful,
   7: but WITHOUT ANY WARRANTY.  No author or distributor
   8: accepts responsibility to anyone for the consequences of using it
   9: or for whether it serves any particular purpose or works at all,
  10: unless he says so in writing.  Refer to the GNU Emacs General Public
  11: License for full details.
  12: 
  13: Everyone is granted permission to copy, modify and redistribute
  14: GNU Emacs, but only under the conditions described in the
  15: GNU Emacs General Public License.   A copy of this license is
  16: supposed to have been given to you along with GNU Emacs so you
  17: can know your rights and responsibilities.  It should be in a
  18: file named COPYING.  Among other things, the copyright notice
  19: and this notice must be preserved on all copies.  */
  20: 
  21: /* Written by Yakim Martillo.  */
  22: 
  23: /*
  24:  *	$Source: /u1/third_party/gnuemacs.v17/src/RCS/xterm.c,v $
  25:  *	$Author: rlk $
  26:  *	$Locker:  $
  27:  *	$Header: xterm.c,v 1.13 86/02/17 12:24:48 rlk Exp $
  28:  */
  29: 
  30: #ifndef lint
  31: static char *rcsid_TrmXTERM_c = "$Header: xterm.c,v 1.13 86/02/17 12:24:48 rlk Exp $";
  32: #endif	lint
  33: 
  34: #include "config.h"
  35: 
  36: /* This includes sys/types.h, and that somehow loses
  37:    if this is not done before the other system files.  */
  38: #include "xterm.h"
  39: 
  40: #include <sys/time.h>
  41: #include <sys/ioctl.h>
  42: #include <stdio.h>
  43: #include <ctype.h>
  44: #include <errno.h>
  45: #include <signal.h>
  46: #include <strings.h>
  47: #include <sys/stat.h>
  48: 
  49: #include "dispextern.h"
  50: #include "termhooks.h"
  51: #include "termopts.h"
  52: #include "termchar.h"
  53: #include "sink.h"
  54: #include "sinkmask.h"
  55: /*#include <X/Xproto.h>	*/
  56: 
  57: #define min(a,b) ((a)<(b) ? (a) : (b))
  58: #define sigunblockx(sig) sigblock (0)
  59: #define sigblockx(sig) sigblock (1 << ((sig) - 1))
  60: XREPBUFFER Xxrepbuffer;
  61: int pixelwidth;
  62: int pixelheight;
  63: int PendingExposure;
  64: int PendingIconExposure;
  65: #define MAXICID 80
  66: char iconidentity[MAXICID];
  67: #define ICONTAG "emacs@"
  68: #define METABIT 0x80
  69: Window XXIconWindow;
  70: Bitmap XXIconMask;
  71: 
  72: char *XXcurrentfont;
  73: char *default_window;
  74: int informflag;
  75: extern struct display_line *DesiredScreen[], *PhysScreen[];
  76: extern int initialized;
  77: int XXdebug;
  78: int XXpid;
  79: extern int screen_garbaged;
  80: int XXxoffset, XXyoffset;
  81: int IconWindow;
  82: 
  83: int WindowMapped;
  84: int CurHL;
  85: 
  86: static int flexlines;       /* last line affect by dellines or */
  87:                 /* inslines functions */
  88: extern int errno;
  89: int VisibleX, VisibleY; /* genuine location of cursor on screen */
  90:                 /* if it is there */
  91: static int SavedX, SavedY;  /* Where the cursor was before update */
  92:                 /* started */
  93: 
  94: int bitblt;     /* Used to track bit blt events */
  95: int CursorExists;   /* during updates cursor is turned off */
  96: static int InUpdate;        /* many of functions here may be invoked */
  97:                 /* even if no update in progress, when */
  98:                 /* no update is in progress the action */
  99:                 /* can be slightly different */
 100: char MouseCursor[33] ="\000\000\002\000\006\000\016\000\036\000\076\000\
 101: \176\000\376\000\376\001\076\000\066\000\142\000\140\000\300\000\300\000\000\
 102: \000";
 103: 
 104: char MouseMask[33] = "\003\000\007\000\017\000\037\000\077\000\177\000\
 105: \377\000\377\001\377\003\377\003\177\000\367\000\363\000\340\001\340\001\
 106: \300\000";
 107: 
 108: Display *XXdisplay;
 109: FontInfo *fontinfo;
 110: Window XXwindow;
 111: Cursor EmacsCursor;
 112: 
 113: char *fore_color;   /* Variables to store colors */
 114: char *back_color;
 115: char *brdr_color;
 116: char *curs_color;
 117: char *mous_color;
 118: 
 119: int fore;
 120: int back;
 121: int brdr;
 122: int curs;
 123: int mous;
 124: 
 125: static WindowInfo windowinfo;
 126: WindowInfo rootwindowinfo;
 127: 
 128: 
 129: 
 130: static XEvent XXEvent;      /* as X messages are read in they are */
 131:                                 /* stored here */
 132: static XREPBUFFER XXqueue;/* Used for storing up ExposeRegion */
 133:                 /* replies, so that the SIGIO inter- */
 134:                 /* rupt serving routines do almost */
 135:                 /* no writes to the X socket */
 136: /*int CurHL;			/* Current Highlighting actually being */
 137:                 /* being used for bold font right now*/
 138: 
 139: int XXborder;
 140: 
 141: 
 142: extern Display *XOpenDisplay ();
 143: extern Window XCreateWindow ();
 144: extern Cursor XDefineCursor ();
 145: extern Cursor XCreateCursor ();
 146: extern FontInfo *XOpenFont ();
 147: 
 148: 
 149: /* HLmode -- Changes the GX function for output strings.  Could be used to
 150:  * change font.  Check an XText library function call.
 151:  */
 152: 
 153: static
 154: HLmode (new)
 155:      int new;
 156: {
 157:   CurHL =  new;
 158: }
 159: 
 160: 
 161: /* External interface to control of standout mode.
 162:    Call this when about to modify line at position VPOS
 163:    and not change whether it is highlighted.  */
 164: 
 165: XTreassert_line_highlight (highlight, vpos)
 166:      int highlight, vpos;
 167: {
 168:   HLmode (highlight);
 169: }
 170: 
 171: /* Call this when about to modify line at position VPOS
 172:    and change whether it is highlighted.  */
 173: 
 174: static
 175: XTchange_line_highlight (new_highlight, vpos, first_unused_hpos)
 176:      int new_highlight, vpos, first_unused_hpos;
 177: {
 178:   HLmode (new_highlight);
 179:   XTtopos (vpos, 0);
 180:   XTclear_end_of_line (0);
 181: }
 182: 
 183: 
 184: /* Used for starting or restarting (after suspension) the X window.  Puts the
 185:  * cursor in a known place, update does not begin with this routine but only
 186:  * with a call to DoDsp.  The mouse cursor is warped into the window and then
 187:  * the cursor is turned on.
 188:  */
 189: 
 190: 
 191: 
 192: static
 193: XTset_terminal_modes ()
 194: {
 195:   int stuffpending;
 196: #ifdef XDEBUG
 197:   fprintf (stderr, "XTset_terminal_modes\n");
 198: #endif
 199:   InUpdate = 0;
 200:   stuffpending = 0;
 201:   if (!initialized)
 202:     {
 203:       CursorExists = 0;
 204:       VisibleX = 0;
 205:       VisibleY = 0;
 206:     }
 207:   XTclear_screen ();
 208:   ioctl (0, FIONREAD, &stuffpending);
 209:   if (stuffpending)
 210:     kill (XXpid, SIGIO);
 211: }
 212: 
 213: /* XTtopos moves the cursor to the correct location and checks whether an update
 214:  * is in progress in order to toggle it on.
 215:  */
 216: 
 217: static
 218: XTtopos (row, col)
 219:      register int row, col;
 220: {
 221: #ifdef XDEBUG
 222:   fprintf (stderr, "XTtopos\n");
 223: #endif
 224:   cursX = col;
 225:   cursY = row;
 226:   if (InUpdate)
 227:     {
 228:       if (CursorExists)
 229:     {
 230:       CursorToggle ();
 231:     }
 232:       return;       /* Generally, XTtopos will be invoked */
 233:       /* when InUpdate with !CursorExists */
 234:       /* so that wasteful XFlush is not called */
 235:     }
 236:   if ((row == VisibleY) && (col == VisibleX))
 237:     {
 238:       if (!CursorExists)
 239:     {
 240:       CursorToggle ();
 241:     }
 242:       XFlush ();
 243:       return;
 244:     }
 245:   if (CursorExists) CursorToggle ();
 246:   VisibleX = col;
 247:   VisibleY = row;
 248:   if (!CursorExists) CursorToggle ();
 249:   XFlush ();
 250: }
 251: 
 252: /* Used to get the terminal back to a known state after resets.  Usually
 253:  * used when restarting suspended or waiting emacs
 254:  */
 255: 
 256: static
 257: cleanup ()
 258: {
 259:   inverse_video = 0;
 260:   HLmode (0);
 261: }
 262: 
 263: /* wipes out numcols columns starting a current column on the current line */
 264: 
 265: static
 266: XTclear_end_of_line (first_blank)
 267:      register int first_blank;
 268: {
 269:   register int numcols;
 270: 
 271: #ifdef XDEBUG
 272:   fprintf (stderr, "XTclear_end_of_line\n");
 273: 
 274: #endif
 275:   if (cursY < 0 || cursY >= screen_height)
 276:     return;
 277:   if (first_blank >= screen_width)
 278:     return;
 279: 
 280:   if (first_blank < 0)
 281:     first_blank = 0;
 282:   numcols = screen_width - first_blank;
 283:   if (cursY == VisibleY && VisibleX >= first_blank)
 284:     {
 285:       if (CursorExists) CursorToggle ();
 286:     }
 287:   XPixSet (XXwindow,
 288:        first_blank * fontinfo->width,
 289:        cursY * fontinfo->height,
 290:        fontinfo->width * numcols,
 291:        fontinfo->height,
 292:        back);
 293:   XTtopos (cursY, first_blank);
 294: }
 295: 
 296: static
 297: XTreset_terminal_modes ()
 298: {
 299: #ifdef XDEBUG
 300:   fprintf (stderr, "XTreset_terminal_modes\n");
 301: #endif
 302:   XTclear_screen ();
 303: }
 304: 
 305: static
 306: XTclear_screen ()
 307: {
 308: #ifdef XDEBUG
 309:   fprintf (stderr, "XTclear_screen\n");
 310: #endif
 311:   HLmode (0);
 312:   CursorExists = 0;
 313: 
 314:   cursX = 0;
 315:   cursY = 0;
 316:   SavedX = 0;
 317:   SavedY = 0;
 318:   VisibleX = 0;
 319:   VisibleY = 0;
 320:   XClear (XXwindow);
 321:   CursorToggle ();
 322:   if (!InUpdate)
 323:     XFlush ();
 324: }
 325: 
 326: /* used by dumprectangle which is usually invoked upon ExposeRegion
 327:  * events which come from bit blt's or moving an obscuring opaque window
 328:  */
 329: 
 330: static
 331: dumpchars (ActiveScreen, numcols, tempX, tempY, tempHL)
 332:      register struct display_line **ActiveScreen;
 333:      register int numcols;
 334:      register int tempX, tempY, tempHL;
 335: {
 336:   if (numcols <= 0) return;
 337:   if (((numcols - 1) + tempX) > screen_width)
 338:     {
 339:       numcols = (screen_width - tempX) + 1;
 340:     }
 341:   if ((tempX < 0) || (tempX >= screen_width) ||
 342:       (tempY < 0) || (tempY >= screen_height))
 343:     {
 344:       return;
 345:     }
 346:   XText (XXwindow,
 347:      (tempX * fontinfo->width),
 348:      (tempY * fontinfo->height),
 349:      &ActiveScreen[tempY + 1]->body[tempX],
 350:      numcols,
 351:      fontinfo->id,
 352:      (tempHL ? back : fore),
 353:      (tempHL ? fore : back));
 354: }
 355: 
 356: /* When a line has been changed this function is called.  X is so fast
 357:  * that the actual sequence is ignore.  Rather, the new version of the
 358:  * line is simply output if this function is invoked while in UpDate.
 359:  * Sometimes writechars can be invoked when not in update if text is to
 360:  * be output at the end of the line.  In this case the whole line is not
 361:  * output.  Simply the new text at the current cursor position given
 362:  * by VisibleX,Y.  The cursor is moved to the end of the new text.
 363:  */
 364: static
 365: writechars (start, end)
 366:      register char *start, *end;
 367: {
 368:   register int temp_length;
 369: 
 370:   if ((cursY < 0) || (cursY >= screen_height))
 371:     {
 372:       return;
 373:     }
 374:   if (CursorExists)
 375:     {
 376:       CursorToggle ();
 377:     }
 378:   if (InUpdate)
 379:     {
 380:       if (DesiredScreen && DesiredScreen[cursY + 1])
 381:     {
 382:       temp_length = DesiredScreen[cursY + 1]->length;
 383:     }
 384:       else
 385:     temp_length = 0;
 386:       if (temp_length > 0)
 387:     {
 388:       XText (XXwindow,
 389:          0,
 390:          (cursY * fontinfo->height),
 391:          &DesiredScreen[cursY + 1]->body[0],
 392:          temp_length,
 393:          fontinfo->id,
 394:          (CurHL ? back : fore),
 395:          (CurHL ? fore : back));
 396:       if (temp_length < screen_width)
 397:         {
 398:           XTclear_end_of_line (temp_length);
 399:         }
 400:       XTtopos (cursY, temp_length);
 401:     }
 402:       else
 403:     {
 404:       XTclear_end_of_line (0);
 405:       XTtopos (cursY, 0);
 406:     }
 407:     }
 408:   else
 409:     {
 410:       if ((VisibleX < 0) || (VisibleX >= screen_width))
 411:     {
 412:       return;
 413:     }
 414:       if ((VisibleY < 0) || (VisibleY >= screen_height))
 415:     {
 416:       return;
 417:     }
 418:       if (((end - start) + VisibleX) >= screen_width)
 419:     {
 420:       end = start + (screen_width - (VisibleX + 1));
 421:     }
 422:       if(end >= start)
 423:     {
 424:        XText (XXwindow,
 425:          (VisibleX * fontinfo->width),
 426:          (VisibleY * fontinfo->height),
 427:          start,
 428:          ((end - start) + 1),
 429:          fontinfo->id,
 430:          (CurHL ? back : fore),
 431:          (CurHL ? fore : back));
 432:       VisibleX = VisibleX + (end - start) + 1;
 433:     }
 434:       if (!CursorExists) CursorToggle ();
 435:     }
 436: }
 437: 
 438: 
 439: static
 440: XTwrite_chars (start, len)
 441:      register char *start;
 442:      register int len;
 443: {
 444: #ifdef XDEBUG
 445:   fprintf (stderr, "XTwrite_chars\n");
 446: #endif
 447:   writechars (start, start + len - 1);
 448: }
 449: 
 450: /* The following routine is for the deaf or for the pervert who prefers
 451:  * that his terminal flashes at him rather than beep at him.
 452:  */
 453: 
 454: static int flashedback;
 455: 
 456: static
 457: XTflash ()
 458: {
 459:   struct itimerval itimer;
 460:   extern int flashback ();
 461: 
 462: #ifdef XDEBUG
 463:   fprintf (stderr, "XTflash\n");
 464: #endif
 465: 
 466:   signal (SIGALRM, flashback);
 467:   getitimer (ITIMER_REAL, &itimer);
 468:   itimer.it_value.tv_usec += 250000;
 469:   itimer.it_interval.tv_sec = 0;
 470:   itimer.it_interval.tv_usec = 0;
 471:   flashedback = 0;
 472:   setitimer (ITIMER_REAL, &itimer, 0);
 473:   XPixFill (XXwindow, 0, 0, screen_width * fontinfo->width,
 474:         screen_height * fontinfo->height, WhitePixel, ClipModeClipped,
 475:         GXinvert, AllPlanes);
 476:   XFlush ();
 477:   while (!flashedback) pause ();
 478: }
 479: 
 480: static
 481: flashback ()
 482: {
 483:   signal (SIGALRM, SIG_IGN);
 484:   XPixFill (XXwindow, 0, 0, screen_width * fontinfo->width,
 485:         screen_height * fontinfo->height, WhitePixel, ClipModeClipped,
 486:         GXinvert, AllPlanes);
 487:   XFlush ();
 488:   flashedback = 1;
 489: }
 490: 
 491: /* A kludge to get a bell */
 492: 
 493: static
 494: XTfeep ()
 495: {
 496: #ifdef XDEBUG
 497:   fprintf (stderr, "XTfeep\n");
 498: #endif
 499:   XFeep (0);
 500: }
 501: 
 502: /* Artificially creating a cursor is hard, the actual position on the
 503:  * screen (either where it is or last was) is tracked with VisibleX,Y.
 504:  * Gnu Emacs code tends to assume a cursor exists in hardward at cursX,Y
 505:  * and that output text will appear there.  During updates, the cursor is
 506:  * supposed to be blinked out and will only reappear after the update
 507:  * finishes.
 508:  */
 509: 
 510: CursorToggle ()
 511: {
 512:   register struct display_line **ActiveScreen;
 513:   if (!WindowMapped)
 514:     {
 515:       CursorExists = 0;
 516:       return 0;
 517:     }
 518:   if ((VisibleX < 0) || (VisibleX >= screen_width) ||
 519:       (VisibleY < 0) || (VisibleY >= screen_height))
 520:     {           /* Current Cursor position trash */
 521:       /* Not much can be done */
 522:       XFlush ();
 523:       CursorExists = 0;
 524:       return 0; /* Currently the return values are not */
 525:       /* used, but I could anticipate using */
 526:       /* them in the future. */
 527:     }
 528:   /*  if(InUpdate && DesiredScreen)
 529:       ActiveScreen = DesiredScreen;
 530:       else*/
 531:   ActiveScreen = PhysScreen;
 532:   if (ActiveScreen && ActiveScreen[VisibleY + 1] &&
 533:       (VisibleX < ActiveScreen[VisibleY + 1]->length))
 534:     {
 535:       if (CursorExists)
 536:     {
 537:       XText (XXwindow,
 538:          VisibleX * fontinfo->width,
 539:          VisibleY * fontinfo->height,
 540:          &ActiveScreen[VisibleY + 1]->body[VisibleX], 1,
 541:          fontinfo->id,
 542:          fore, back);
 543:     }
 544:       else
 545:     {
 546:         XText (XXwindow,
 547:            VisibleX * fontinfo->width,
 548:            VisibleY * fontinfo->height,
 549:            &ActiveScreen[VisibleY + 1]->body[VisibleX], 1,
 550:            fontinfo->id,
 551:            back, curs);
 552:     }
 553:     }
 554:   else if (CursorExists)
 555:     {
 556:       XPixSet (XXwindow,
 557:            VisibleX * fontinfo->width,
 558:            VisibleY * fontinfo->height,
 559:            fontinfo->width, fontinfo->height, back);
 560:     }
 561:   else
 562:     {
 563:     XPixSet (XXwindow,
 564:          VisibleX * fontinfo->width,
 565:          VisibleY * fontinfo->height,
 566:          fontinfo->width, fontinfo->height, curs);
 567:     }
 568:   CursorExists = !CursorExists;/* Cursor has either been blinked in */
 569:      /* or out */
 570:   if (!InUpdate)
 571:     {
 572:       XFlush ();
 573:     }
 574:   return 1;
 575: }
 576: 
 577: /* This routine is used by routines which are called to paint regions */
 578: /* designated by ExposeRegion events.  If the cursor may be in the exposed */
 579: /* region, this routine makes sure it is gone so that dumprectangle can */
 580: /* toggle it back into existance if dumprectangle is invoked when not in */
 581: /* the midst of a screen update. */
 582: static
 583: ClearCursor ()
 584: {
 585:   if (!WindowMapped)
 586:     {
 587:       CursorExists = 0;
 588:       return;
 589:     }
 590:   if ((VisibleX < 0) || (VisibleX >= screen_width)
 591:       || (VisibleY < 0) || (VisibleY >= screen_height))
 592:     {           /* Current Cursor position trash */
 593:       /* Not much can be done */
 594:       CursorExists = 0;
 595:       return;
 596:     }
 597:   XPixSet (XXwindow,
 598:       VisibleX * fontinfo->width,
 599:       VisibleY * fontinfo->height,
 600:       fontinfo->width, fontinfo->height,
 601:       back);
 602:   CursorExists = 0;
 603: }
 604: 
 605: static
 606: XTupdate_begin ()
 607: {
 608: #ifdef XDEBUG
 609:   fprintf (stderr, "XTupdate_begin\n");
 610: #endif
 611: 
 612:   InUpdate = 1;
 613:   if (CursorExists)
 614:     {
 615:       CursorToggle ();
 616:     }
 617:   SavedX = cursX;       /* The initial"hardware" cursor position is */
 618:   /*  saved because that is where gnu emacs */
 619:   /*  expects the cursor to be at the end of*/
 620:   /* the update */
 621:   SavedY = cursY;
 622:   dumpqueue();
 623: }
 624: 
 625: 
 626: static
 627: XTupdate_end ()
 628: {
 629: #ifdef XDEBUG
 630:   fprintf (stderr, "XTupdate_end\n");
 631: #endif
 632:   if (CursorExists)
 633:     CursorToggle ();
 634:   InUpdate = 0;
 635:   dumpqueue ();
 636:   XTtopos (SavedY, SavedX); /* XTtopos invokes cursor toggle */
 637: }
 638: 
 639: /* Used for expose region and expose copy events.  Have to get the text
 640:  * back into the newly blank areas.
 641:  */
 642: 
 643: dumprectangle (top, left, rows, cols)
 644:      register int top, left, rows, cols;
 645: {
 646:   register struct display_line **ActiveScreen;
 647:   register int index;
 648:   int localX, localY, localHL;
 649:   rows += top;
 650:   cols += left;
 651:   top /= fontinfo->height;  /* Get row and col containing up and */
 652:   /* left borders of exposed region -- */
 653:   /* round down here*/
 654:   left /= fontinfo->width;
 655:   rows += (fontinfo->height - 1);
 656:   cols += (fontinfo->width - 1);
 657:   rows /= fontinfo->height;/* Get row and col containing bottom and */
 658:   /* right borders -- round up here */
 659:   rows -= top;
 660:   cols /= fontinfo->width;
 661:   cols -= left;
 662:   if (rows < 0) return;
 663:   if (cols < 0) return;
 664:   if (top > (screen_height - 1)) return;
 665:   if (left > (screen_width - 1)) return;
 666:   if ((VisibleX >= left) && (VisibleX < (left + cols)) &&
 667:       (VisibleY >= top) && (VisibleY < (top + rows)))
 668:     {
 669:       ClearCursor ();
 670:     }
 671:   if (InUpdate && DesiredScreen)
 672:     ActiveScreen = PhysScreen;
 673:   else if (PhysScreen)
 674:     ActiveScreen = PhysScreen;/* When cue is dumped in update this */
 675:   else
 676:     return;
 677:   /* should perhaps be DesiredScreen */
 678:   /* but PhysScreen is guaranteed to contain*/
 679:   /* date which was good for every line on */
 680:   /* screen. For desired screen only for */
 681:   /* lines which are changing.  Emacs does */
 682:   /* not consider a line within a newly */
 683:   /* exposed region necessarily to have */
 684:   /* been changed.  Emacs knows nothing */
 685:   /* about ExposeRegion events.*/
 686:   for (localY = top, index = 0;
 687:        (index < rows) && (localY < screen_height);
 688:        ++index, ++localY)
 689:     {
 690:       if ((localY < 0) || (localY >= screen_height)) continue;
 691:       if (!ActiveScreen[localY + 1]) continue;
 692:       if ((left + 1) > ActiveScreen[localY + 1]->length) continue;
 693:       localX = left;
 694:       localHL = ActiveScreen[localY + 1]->highlighted;
 695:       dumpchars (ActiveScreen,
 696:          min (cols,
 697:               ActiveScreen[localY + 1]->length
 698:             - localX),
 699:          localX, localY, localHL);
 700:     }
 701:   if (!InUpdate && !CursorExists) CursorToggle ();
 702:   /* Routine usually called */
 703:   /* when not in update */
 704: }
 705: 
 706: /* What sections of the window will be modified from the UpdateDisplay
 707:  * routine is totally under software control.  Any line with Y coordinate
 708:  * greater than flexlines will not change during an update.  This is really
 709:  * used only during dellines and inslines routines (scraplines and stufflines)
 710:  */
 711: static
 712: XTset_terminal_window (n)
 713:      register int n;
 714: {
 715: #ifdef XDEBUG
 716:   fprintf (stderr, "XTset_terminal_window\n");
 717: #endif
 718:   if ((n <= 0) || (n > screen_height))
 719:     flexlines = screen_height;
 720:   else
 721:     flexlines = n;
 722: }
 723: 
 724: XTins_del_lines (vpos, n)
 725:      int vpos, n;
 726: {
 727: #ifdef XDEBUG
 728:   fprintf (stderr, "XTins_del_lines\n");
 729: #endif
 730:   XTtopos (vpos, 0);
 731:   if (n >= 0) stufflines (n);
 732:   else scraplines (-n);
 733: 
 734: }
 735: 
 736: static
 737: XTinsert_chars (start, len)
 738:      register char *start;
 739:      register int len;
 740: {
 741: #ifdef XDEBUG
 742:   fprintf (stderr, "XTinsert_chars\n");
 743: #endif
 744:   writechars (start, start + len - 1);
 745: }
 746: 
 747: static
 748: XTdelete_chars (n)
 749:      register int n;
 750: {
 751:   char *msg = "***Delete Chars Called Outside of Update!!!***";
 752: #ifdef XDEBUG
 753:   fprintf (stderr, "XTdelete_chars\n");
 754: #endif
 755:   writechars (msg, msg + strlen (msg) - 1);
 756: }
 757: 
 758: static
 759: stufflines (n)
 760:      register int n;
 761: {
 762:   register int topregion, bottomregion;
 763:   register int length, newtop;
 764: 
 765:   if (cursY >= flexlines)
 766:     return;
 767: 
 768:   if (!WindowMapped)
 769:     {
 770:       bitblt = 0;
 771:       return;
 772:     }
 773:   if (CursorExists) CursorToggle ();
 774:   dumpqueue ();
 775:   topregion = cursY;
 776:   bottomregion = flexlines - (n + 1);
 777:   newtop = cursY + n;
 778:   length = (bottomregion - topregion) + 1;
 779:   if ((length > 0) && (newtop <= flexlines))
 780:     {
 781:       /* Should already have cleared */
 782:       /* queue of events associated */
 783:       /* with old bitblts */
 784:       XMoveArea (XXwindow, 0,
 785:          topregion * fontinfo->height,
 786:          0, newtop * fontinfo->height,
 787:          screen_width * fontinfo->width,
 788:          length * fontinfo->height);
 789:       if (WindowMapped)
 790:     bitblt = 1;
 791:       request_sigio ();
 792:       XFlush ();
 793:       while (bitblt)
 794:     {
 795:       kill (XXpid, SIGIO);
 796:     }
 797:       unrequest_sigio ();
 798:       XFlush ();
 799:     }
 800:   newtop = min (newtop, (flexlines - 1));
 801:   length = newtop - topregion;
 802:   if (length > 0)
 803:     {
 804:       XPixSet (XXwindow,
 805:            0,
 806:            topregion * fontinfo->height,
 807:            screen_width * fontinfo->width,
 808:            n * fontinfo->height,
 809:            back);
 810:     }
 811:   /*  if (!InUpdate) CursorToggle (); */
 812: }
 813: 
 814: static
 815: scraplines (n)
 816:      register int n;
 817: {
 818:   if (!WindowMapped)
 819:     {
 820:       bitblt = 0;
 821:       return;
 822:     }
 823: 
 824:   if (cursY >= flexlines)
 825:     return;
 826:   if (CursorExists) CursorToggle ();
 827:   dumpqueue ();
 828:   if ((cursY + n) >= flexlines)
 829:     {
 830:       if (flexlines >= (cursY + 1))
 831:     {
 832:       XPixSet (XXwindow,
 833:            0, cursY * fontinfo->height,
 834:            screen_width * fontinfo->width,
 835:            (flexlines - cursY) * fontinfo->height,
 836:            back);
 837:     }
 838:     }
 839:   else
 840:     {
 841:       XMoveArea (XXwindow,
 842:          0, (cursY + n) * fontinfo->height,
 843:          0, cursY * fontinfo->height,
 844:          screen_width * fontinfo->width,
 845:          (flexlines - (cursY + n)) * fontinfo->height);
 846:       if (WindowMapped)
 847:     bitblt = 1;
 848:       request_sigio ();
 849:       XFlush ();
 850:       while (bitblt)
 851:     {
 852:       kill (XXpid, SIGIO);
 853:     }
 854:       unrequest_sigio ();
 855:       XFlush ();
 856:       XPixSet (XXwindow, 0, (flexlines - n) * fontinfo->height,
 857:            screen_width * fontinfo->width,
 858:            n * fontinfo->height, back);
 859:     }
 860:   /* if (!InUpdate) CursorToggle (); */
 861: }
 862: 
 863: /* Substitutes for standard read routine.  Under X not interested in individual
 864:  * bytes but rather individual packets.
 865:  */
 866: 
 867: XTread_socket (sd, bufp, numchars)
 868:      register int sd;
 869:      register char *bufp;
 870:      register int numchars;
 871: {
 872: 
 873:   int count;
 874:   int stuffpending;
 875:   int temp_width, temp_height;
 876: /*  typedef struct reply {XEvent event; struct reply *next} Reply;
 877:     Reply *replies = NULL;*/
 878: 
 879:   count = 0;
 880:   if (numchars <= 0)
 881:     {   /* To keep from overflowing read buffer */
 882:       numchars = 1;
 883:       --bufp;
 884:     }
 885:   while (bitblt || XPending () != 0)
 886:     {
 887:       /* while there are more events*/
 888:       XNextEvent (&XXEvent);
 889:       switch (XXEvent.type)
 890:     {
 891: /*	case X_Reply:
 892: 	{
 893: 	extern char *malloc();
 894: 	Reply *reply = (Reply *) malloc (sizeof (Reply));
 895: 	reply->next = replies;
 896: 	reply->event = XXEvent;
 897: 	replies = reply;
 898: 	break;
 899: 	}*/
 900:     default:
 901:       break;
 902:     case ExposeWindow:
 903:       if (((XExposeEvent *)&XXEvent)->window == XXIconWindow)
 904:         {
 905:           PendingIconExposure = 1;
 906:         }
 907:       else
 908:         PendingExposure = 1;/* No reason to repeat */
 909:       /* this if several */
 910:       /* ExposeWindow events */
 911:       /* come in quick succes-*/
 912:       /* ion */
 913:       break;
 914:     case ExposeRegion:
 915:       if (PendingExposure)
 916:         {   /* Don't bother with */
 917:           /* region events when */
 918:           /* full window event */
 919:           /* is pending */
 920:           break;
 921:         }
 922:       loadxrepbuffer (&XXEvent, &XXqueue);
 923:       if (XXqueue.rindex == XXqueue.windex)
 924:         {
 925:           PendingExposure = 1;
 926:         }
 927:       if ((XXqueue.rindex > XXqueue.mindex) ||
 928:           (XXqueue.windex > XXqueue.mindex) ||
 929:         (XXqueue.rindex < 0) ||
 930:           (XXqueue.windex < 0))
 931:         {
 932:           PendingExposure = 1;
 933:         }
 934:       break;
 935:     case ExposeCopy:    /* For ExposeCopy sync */
 936:       /* will block all outgoing */
 937:       /* requests until this is */
 938:       /* decremented */
 939:       if (WindowMapped) bitblt = 0;
 940:       break;
 941:     case KeyPressed:
 942:       if (Input (((XKeyPressedEvent *) &XXEvent)->detail, bufp))
 943:         {
 944:           ++bufp;
 945:           ++count;
 946:           --numchars;
 947:         }
 948:       break;
 949:     case ButtonPressed:
 950:       switch (spacecheck (Xxrepbuffer.mindex,
 951:                   Xxrepbuffer.rindex,
 952:                   Xxrepbuffer.windex, 0))
 953:         {
 954:         case 0:
 955:           loadxrepbuffer (&XXEvent,
 956:                   &Xxrepbuffer);
 957:           if (informflag)
 958:         {
 959:           *bufp++ = (char) 003; /* C-c */
 960:           ++count;
 961:           --numchars;
 962:           *bufp++ = (char) '\r';  /* C-m */
 963:           ++count;
 964:           --numchars;
 965:         }
 966:           break;
 967:         case -1:
 968:           break;
 969:         case -2:
 970:         default:
 971:           fixxrepbuffer ();
 972:           break;
 973:         }
 974:       break;
 975:     }
 976:     }
 977: /*  while (replies) {
 978:     Reply *reply = replies;
 979:     XPutBackEvent (&reply->event);
 980:     replies = reply->next;
 981:     free (reply);
 982:     }*/
 983:   if (count < 0)
 984:     count = 0;
 985:   if (CursorExists)
 986:     xfixscreen ();
 987:   return count;
 988: }
 989: 
 990: /* refresh bitmap kitchen sink icon */
 991: refreshicon ()
 992: {
 993:   if (XXIconWindow)
 994:     XBitmapBitsPut (XXIconWindow, 0,  0, sink_width, sink_height,
 995:             sink_bits, BlackPixel, WhitePixel,
 996:             XXIconMask, GXcopy, AllPlanes);
 997:   XFlush ();
 998: }
 999: 
1000: XBitmapIcon ()
1001: {
1002:     if (!IconWindow)
1003:       {
1004:       XSetIconWindow (XXwindow,XXIconWindow);
1005:       XSelectInput (XXIconWindow, ExposeWindow);
1006:       IconWindow = !IconWindow;
1007:       }
1008: }
1009: 
1010: XTextIcon ()
1011: {
1012:     if (IconWindow)
1013:       {
1014:       XClearIconWindow (XXwindow);
1015:       XSelectInput (XXIconWindow, NoEvent);
1016:       IconWindow = !IconWindow;
1017:       }
1018: }
1019: 
1020: /* Interpreting incoming keycodes. Should have table modifiable as needed
1021:  * from elisp.
1022:  */
1023: 
1024: /* Exit gracefully from gnuemacs, doing an autosave and giving a status.
1025:  */
1026: 
1027: XExitGracefully ()
1028: {
1029:   XAutoSave();
1030:   exit(70);
1031: }
1032: 
1033: xfixscreen ()
1034: {
1035:   register int temp_width, temp_height;
1036:   register int (*func) ();
1037:   register int temp_x, temp_y;
1038:   dumpqueue ();
1039:   func = signal (SIGIO, SIG_IGN);
1040:   /* Check that the connection is in fact open.  This works by doing a nop */
1041:   /* (well, almost) write operation.  If there is an XIOerror or a */
1042:   /* SIGPIPE, exit gracefully.  This fixes the loop-on-logout bug.*/
1043:   XIOErrorHandler (XExitGracefully);
1044:   CursorToggle();
1045:   CursorToggle();
1046:   XFlush ();
1047:   XIOErrorHandler (0);
1048:   if (PendingIconExposure)
1049:     {
1050:       refreshicon ();
1051:       PendingIconExposure = 0;
1052:     }
1053:   if (PendingExposure)
1054:     {
1055:       PendingExposure = 0;
1056:       ClearCursor ();
1057:       XXqueue.rindex = 0;
1058:       XXqueue.windex = 0;
1059:       XQueryWindow (XXwindow, &windowinfo); /* Dangerous to do */
1060:       /* writes here but */
1061:       /* otherwise would */
1062:       /* have to alter */
1063:       /* gnu emacs display */
1064:       /* routines to query */
1065:       /* when screen garbaged */
1066:       temp_width = (windowinfo.width / fontinfo->width);
1067:       temp_height = (windowinfo.height / fontinfo->height);
1068:       if (temp_width != screen_width || temp_height != screen_height)
1069:     change_screen_size (temp_height, temp_width);
1070:       temp_x = windowinfo.x;
1071:       temp_y = windowinfo.y;
1072:       if (temp_x != XXxoffset || temp_y != XXyoffset)
1073:     XSetOffset (temp_x, temp_y);
1074:       dumprectangle (0, 0, screen_height * fontinfo->height,
1075:              screen_width * fontinfo->width);
1076:     }
1077:   if (!InUpdate)
1078:     if (!CursorExists)
1079:       CursorToggle ();
1080:   (void) signal (SIGIO, func);
1081: kill (XXpid, SIGIO);
1082: }
1083: 
1084: 
1085: static
1086: Input (keycode, buffer)
1087:      register int keycode;
1088:      register char *buffer;
1089: {
1090:   register short c;
1091:   register int offset;
1092:   extern KeyMapEntry StdMap[];
1093:   offset = KeyState (keycode);  /* set SHIFT, CONTROL, META */
1094:   c = StdMap [keycode & ValueMask] [offset];
1095:   if ((keycode & ShiftLockMask) && (c >= 'a') && (c <= 'z'))
1096:     {
1097:       c += 'A' - 'a';
1098:     }
1099:   keycode &= ValueMask; /* no longer need shift bits for anything */
1100:   if (! (c & ~377))
1101:     {
1102:       *buffer = c;
1103:       return 1;
1104:     }
1105:   switch (c)
1106:     {
1107: /*    case '\007':
1108:       kill(XXpid, SIGINT);
1109:       break;*/
1110:     case KEYPAD:
1111:     case CURSOR:
1112:       switch (keycode & ValueMask)
1113:     {
1114:     case 0247:  /* left-arrow maps to C-B */
1115:       c = 002 | ((keycode & MetaMask) ? METABIT : 0);
1116:       *buffer = c;
1117:       return(1);
1118:     case 0250:  /* right-arrow maps to C-F */
1119:       c = 006 | ((keycode & MetaMask) ? METABIT : 0);
1120:       *buffer = c;
1121:       return(1);
1122:     case 0252:  /* up-arrow maps to C-P */
1123:       c = 020 | ((keycode & MetaMask) ? METABIT : 0);
1124:       *buffer = c;
1125:       return(1);
1126:     case 0251:  /* down-arrow maps to C-N */
1127:       c = 016 | ((keycode & MetaMask) ? METABIT : 0);
1128:       *buffer = c;
1129:       return(1);
1130:     default:
1131:       return(0);
1132:     }
1133:     case PFX:
1134:     case (short) -1:
1135:     case SHFT:
1136:     case CNTL:
1137:     case SYMBOL:
1138:     case LOCK:
1139:     case FUNC1:
1140:     case FUNC2:
1141:     case FUNC3:
1142:     case FUNC4:
1143:     case FUNC5:
1144:     case FUNC6:
1145:     case FUNC7:
1146:     case FUNC8:
1147:     case FUNC9:
1148:     case FUNC10:
1149:     case FUNC11:
1150:     case FUNC12:
1151:     case FUNC13:
1152:     case FUNC14:
1153:     case FUNC15:
1154:     case FUNC16:
1155:     case FUNC17:
1156:     case FUNC18:
1157:     case FUNC19:
1158:     case FUNC20:
1159:     case E1:
1160:     case E2:
1161:     case E3:
1162:     case E4:
1163:     case E5:
1164:     case E6:
1165:       return 0;
1166:     default:
1167:       *buffer = c;
1168:       return 1;
1169:     }
1170: }
1171: 
1172: 
1173: x_term_init ()
1174: {
1175:   register char *vardisplay;
1176:   register char *colonpointer;
1177:   register int status;
1178:   extern char *getenv ();
1179:   register int scratchindex;
1180:   extern XTinterrupt_signal ();
1181:   extern char *malloc ();
1182: 
1183:   vardisplay = getenv ("DISPLAY");
1184:   if (!vardisplay)
1185:     {
1186:       fprintf (stderr, "DISPLAY environment variable must be set\n");
1187:       exit (-200);
1188:     }
1189:   XXdisplay = XOpenDisplay (vardisplay);
1190:   if (XXdisplay == (Display *) 0)
1191:     {
1192:       fprintf (stderr, "No X.\n");
1193:       exit (-99);
1194:     }
1195:   dup2 (dpyno (), 0);
1196:   close (dpyno ());
1197:   dpyno () = 0;     /* Looks a little strange? */
1198:   /* check the def of the */
1199:   /* macro, it is a genuine */
1200:   /* lvalue */
1201:   Xxrepbuffer.mindex = XREPBUFSIZE - 1;
1202:   Xxrepbuffer.windex = 0;
1203:   Xxrepbuffer.rindex = 0;
1204:   XXqueue.mindex = XREPBUFSIZE - 1;
1205:   XXqueue.windex = 0;
1206:   XXqueue.rindex = 0;
1207:   WindowMapped = 0;
1208:   baud_rate = 9600;
1209:   min_padding_speed = 10000;
1210:   must_write_spaces = 1;
1211:   informflag = 1;
1212:   MetaFlag = 1;
1213:   visible_bell = 1;
1214:   interrupt_input = 1;
1215:   inverse_video = 1;
1216:   bitblt = 0;
1217:   PendingExposure = 0;
1218:   IconWindow = 0;
1219: 
1220:   fix_screen_hook = xfixscreen;
1221:   clear_screen_hook = XTclear_screen;
1222:   clear_end_of_line_hook = XTclear_end_of_line;
1223:   ins_del_lines_hook = XTins_del_lines;
1224:   change_line_highlight_hook = XTchange_line_highlight;
1225:   insert_chars_hook = XTinsert_chars;
1226:   write_chars_hook = XTwrite_chars;
1227:   delete_chars_hook = XTdelete_chars;
1228:   ring_bell_hook = XTfeep;
1229:   reset_terminal_modes_hook = XTreset_terminal_modes;
1230:   set_terminal_modes_hook = XTset_terminal_modes;
1231:   update_begin_hook = XTupdate_begin;
1232:   update_end_hook = XTupdate_end;
1233:   set_terminal_window_hook = XTset_terminal_window;
1234:   read_socket_hook = XTread_socket;
1235:   topos_hook = XTtopos;
1236:   /* raw_topos_hook = XTraw_topos;  */
1237:   reassert_line_highlight_hook = XTreassert_line_highlight;
1238:   scroll_region_ok = 1;        /* we'll scroll partial screens */
1239:   char_ins_del_ok = 0;         /* just as fast to write the line */
1240:   line_ins_del_ok = 1;         /* we'll just blt 'em */
1241:   fast_clear_end_of_line = 1;  /* X does this well */
1242:   memory_below_screen = 0;  /* we don't remember what scrolls
1243: 				   off the bottom */
1244:   dont_calculate_costs = 1;
1245: 
1246:   fore = BlackPixel;
1247:   back = WhitePixel;
1248:   brdr = BlackPixel;
1249:   mous = BlackPixel;
1250:   curs = BlackPixel;
1251: 
1252:   fore_color = "black";
1253:   back_color = "white";
1254:   brdr_color = "black";
1255:   mous_color = "black";
1256:   curs_color = "black";
1257: 
1258:   XXpid = getpid ();
1259:   XXcurrentfont = malloc (sizeof ("vtsingle") + 1);
1260:   default_window = "=80x24+1+1";
1261:   signal (SIGIO, XTread_socket);
1262:   signal (SIGPIPE, XExitGracefully);
1263:   if (XXcurrentfont == (char *) 0)
1264:     {
1265:       fprintf (stderr, "Memory allocation failure.\n");
1266:       exit (-150);
1267:     }
1268:   strcpy (&XXcurrentfont[0], "vtsingle");
1269:   XQueryWindow (RootWindow, &rootwindowinfo);
1270:   strncpy (iconidentity, ICONTAG, MAXICID);
1271:   XXborder = 1;
1272:   screen_width = 80;
1273:   screen_height = 66;
1274:   XXxoffset = 0;
1275:   XXyoffset = 0;
1276:   XXdebug = 0;
1277:   fontinfo = XOpenFont (&XXcurrentfont[0]);
1278:   if (fontinfo == (FontInfo *) 0)
1279:     {
1280:       fprintf (stderr, "No font\n");
1281:       exit (-98);
1282:     }
1283:   pixelwidth = screen_width * fontinfo->width + 1;
1284:   pixelheight = screen_height * fontinfo->height + 1;
1285:   XXwindow = XCreateWindow (RootWindow,
1286:                 XXxoffset /* Absolute horizontal offset */,
1287:                 XXyoffset /* Absolute Vertical offset */,
1288:                 pixelwidth, pixelheight,
1289:                 XXborder, BlackPixmap, WhitePixmap);
1290:   if (!XXwindow)
1291:     {
1292:       fprintf (stderr, "Unable to create window.\n");
1293:       exit (-97);
1294:     }
1295: 
1296:   XXIconWindow = XCreateWindow (RootWindow, 0, 0, sink_width, sink_height,
1297:                 2, WhitePixmap, (Pixmap) NULL);
1298: 
1299:   if (!XXIconWindow)
1300:     {
1301:       fprintf (stderr, "Unable to create icon window.\n");
1302:       fflush (stderr);
1303:       exit (-97);
1304:     }
1305:   XSelectInput (XXIconWindow, NoEvent);
1306:   XXIconMask = XStoreBitmap(sink_mask_width, sink_mask_height, sink_mask_bits);
1307: 
1308:   XSelectInput (XXwindow, NoEvent);
1309:   XSetResizeHint (XXwindow, fontinfo->width * 10, fontinfo->height *5,
1310:           fontinfo->width, fontinfo->height);
1311: 
1312:   if (gethostname (&iconidentity[sizeof (ICONTAG) - 1],
1313:            (MAXICID - 1) - sizeof (ICONTAG)))
1314:     {
1315:       iconidentity[sizeof (ICONTAG) - 2] = '\0';
1316:     }
1317:   XStoreName (XXwindow, &iconidentity[0]);
1318: 
1319:   EmacsCursor = XCreateCursor (16, 16, MouseCursor, MouseMask,
1320:                    0, 0, BlackPixel, WhitePixel, GXcopy);
1321:   XDefineCursor (XXwindow, EmacsCursor);
1322:   /* Dirty kluge so maybe things will work right */
1323:   XBitmapIcon();
1324:   XTextIcon();
1325:   flexlines = screen_height;
1326:   if (!initialized)
1327:     XPopUpWindow ();
1328:   setxterm ();
1329: }
1330: 
1331: 
1332: /* Process all queued ExposeRegion events. */
1333: static
1334: dumpqueue ()
1335: {
1336:   register int i;
1337:   XExposeRegionEvent r;
1338:   if ((XXqueue.rindex > XXqueue.mindex) ||
1339:       (XXqueue.windex > XXqueue.mindex) ||
1340:       (XXqueue.rindex < 0) ||
1341:       (XXqueue.windex < 0))
1342:     {
1343:       PendingExposure = 1;
1344:     }
1345:   else
1346:     while (XXqueue.rindex != XXqueue.windex)
1347:       {
1348:     if (CursorExists)
1349:       CursorToggle ();
1350:     unloadxrepbuffer (&r, &XXqueue);
1351:     dumprectangle (r.y, r.x, r.height, r.width);
1352:       }
1353: }
1354: 
1355: 
1356: 
1357: XSetFlash ()
1358: {
1359:   ring_bell_hook = XTflash;
1360: }
1361: 
1362: XSetFeep ()
1363: {
1364:   ring_bell_hook = XTfeep;
1365: }
1366: 
1367: 
1368: XNewFont (newname)
1369:      register char *newname;
1370: {
1371:   FontInfo *temp;
1372:   int (*func) ();
1373:   func = signal (SIGIO, SIG_IGN);
1374:   XFlush ();
1375:   if (XXdebug)
1376:     fprintf (stderr, "Request id is %d\n", XXdisplay->request);
1377:   temp = XOpenFont (newname);
1378:   if (temp == (FontInfo *) 0)
1379:     {
1380:       (void) signal (SIGIO, func);
1381:       if (QLength () > 0)
1382:     {
1383:         kill (XXpid, SIGIO);
1384:     }
1385:       return -1;
1386:     }
1387:   XCloseFont (fontinfo);
1388:   fontinfo = temp;
1389:   (void) signal (SIGIO, func);
1390:   XSetResizeHint (XXwindow, fontinfo->width * 10, fontinfo->height *5,
1391:           fontinfo->width, fontinfo->height);
1392:   XSetWindowSize (screen_height, screen_width);
1393:   if (QLength () > 0)
1394:     {
1395:     kill (XXpid, SIGIO);
1396:     }
1397:   return 0;
1398: }
1399: 
1400: XFlipColor ()
1401: {
1402:   Pixmap temp;
1403:   int tempcolor;
1404:   char *tempname;
1405:   int (*func) ();
1406:   Cursor temp_curs;
1407:   CursorToggle ();
1408:   func = signal (SIGIO, SIG_IGN);
1409:   temp = XMakeTile(fore);
1410:   XChangeBackground (XXwindow, temp);
1411:   XFreePixmap (temp);
1412:   temp = XMakeTile (back);
1413:   if (XXborder)
1414:     XChangeBorder (XXwindow, temp);
1415:   XFreePixmap(temp);
1416:   brdr = back;
1417:   brdr_color = back_color;
1418:   tempcolor = fore;
1419:   fore = back;
1420:   back = tempcolor;
1421:   tempname = fore_color ;
1422:   fore_color = back_color;
1423:   back_color = tempname;
1424: /*  XPixFill (XXwindow, 0, 0, screen_width * fontinfo->width,
1425: 	    screen_height * fontinfo->height, back, ClipModeClipped,
1426: 	    GXcopy, AllPlanes);
1427:   dumprectangle(0, 0, screen_height * fontinfo->height,
1428:   screen_width * fontinfo -> width);*/
1429:   XRedrawDisplay();
1430:   if (curs == WhitePixel)
1431:     {
1432:     curs = BlackPixel;
1433:     curs_color = "black";
1434:     }
1435:   else if (curs == BlackPixel)
1436:     {
1437:     curs = WhitePixel;
1438:     curs_color = "white";
1439:     }
1440:   if (mous == WhitePixel)
1441:     {
1442:     mous = BlackPixel;
1443:     mous_color = "black";
1444:     }
1445:   else if (mous == BlackPixel)
1446:     {
1447:     mous = WhitePixel;
1448:     mous_color = "white";
1449:     }
1450:   temp_curs = XCreateCursor(16, 16, MouseCursor, MouseMask, 0, 0,
1451:                 mous, back, GXcopy);
1452:   XUndefineCursor (XXwindow);
1453:   XDefineCursor (XXwindow, temp_curs);
1454:   XFreeCursor (EmacsCursor);
1455:   (void) signal (SIGIO, func);
1456:   bcopy (&temp_curs, &EmacsCursor, sizeof (Cursor));
1457:   CursorToggle ();
1458:   XFlush ();
1459: }
1460: 
1461: XSetOffset (xoff, yoff)
1462:      register int xoff, yoff;
1463: {
1464:   if (xoff < 0)
1465:     {
1466:       XXxoffset = rootwindowinfo.width + (++xoff) - pixelwidth - 4;
1467:     }
1468:   else
1469:     {
1470:       XXxoffset = xoff;
1471:     }
1472:   if (yoff < 0)
1473:     {
1474:       XXyoffset
1475:     = rootwindowinfo.height + (++yoff) - pixelheight - 4;
1476:     }
1477:   else
1478:     {
1479:       XXyoffset = yoff;
1480:     }
1481:   XMoveWindow (XXwindow, XXxoffset, XXyoffset);
1482:   /* XWarpMouse (XXwindow, pixelwidth >> 1, pixelheight >> 1); */
1483: }
1484: 
1485: XSetWindowSize (rows, cols)
1486:      register int rows, cols;
1487: {
1488:   if (rows < 5) rows = 66;
1489:   if (cols < 5) cols = 80;
1490:   pixelwidth = cols * fontinfo->width + 1;
1491:   pixelheight = rows * fontinfo->height + 1;
1492:   XChangeWindow (XXwindow, pixelwidth, pixelheight);
1493:   XFlush ();
1494:   change_screen_size (rows, cols);
1495:   PendingExposure = 0;
1496: }
1497: 
1498: XPopUpWindow ()
1499: {
1500:     if (WindowMapped)
1501:       return;
1502:     if(!x_edges_specified)
1503:       Fx_rubber_band ();
1504:     bitblt = 0;
1505:     CursorExists = 0;
1506:     VisibleX = 0;
1507:     VisibleY = 0;
1508:     WindowMapped = 1;
1509:     XMapWindow (XXwindow);
1510:     dumprectangle (0, 0, screen_height * fontinfo->height,
1511:            screen_width * fontinfo->width);
1512:     XSelectInput (XXwindow, KeyPressed | ExposeWindow |
1513:           ButtonPressed | ExposeRegion | ExposeCopy);
1514:     /*	XWarpMouse(XXwindow, pixelwidth >> 1, pixelheight >> 1);*/
1515:     XTtopos (0, 0);
1516: /*  XRedrawDisplay();*/
1517:     XFlush ();
1518: }
1519: 
1520: spacecheck (mindex, rindex, windex, minfreespace)
1521:      register int mindex, rindex, windex, minfreespace;
1522: {
1523:   if ((rindex > mindex) || (windex > mindex))
1524:     {
1525:       fprintf (stderr, "Fatal Mouse Buffer Error.\n");
1526:       fprintf (stderr, "%d = mindex, %d = rindex, %d = windex\n",
1527:            mindex, rindex, windex);
1528:       return -2;
1529:     }
1530:   if (windex >= rindex)
1531:     {
1532:       if ((mindex - (windex - rindex)) > minfreespace)
1533:     return 0;
1534:     }
1535:   else
1536:     {
1537:       if (((rindex - windex) - 1) > minfreespace)
1538:     return 0;
1539:     }
1540:   return -1;
1541: }
1542: 
1543: loadxrepbuffer (p_xrep, p_buffer)
1544:      register XEvent *p_xrep;
1545:      register XREPBUFFER *p_buffer;
1546: {
1547:   p_buffer->xrep[p_buffer->windex] = *p_xrep;
1548:   if (p_buffer->windex == p_buffer->mindex)
1549:     p_buffer->windex = 0;
1550:   else
1551:     p_buffer->windex++;
1552: }
1553: 
1554: unloadxrepbuffer (p_xrep, p_buffer)
1555:      register XEvent *p_xrep;
1556:      register XREPBUFFER *p_buffer;
1557: {
1558:   if (p_buffer->windex == p_buffer->rindex)
1559:     return -1;
1560:   *p_xrep = p_buffer->xrep[p_buffer->rindex];
1561:   if (p_buffer->rindex == p_buffer->mindex)
1562:     p_buffer->rindex = 0;
1563:   else
1564:     p_buffer->rindex++;
1565:   return 0;
1566: }
1567: 
1568: fixxrepbuffer ()
1569: {
1570:   Xxrepbuffer.mindex = XREPBUFSIZE - 1;
1571:   Xxrepbuffer.windex = 0;
1572:   Xxrepbuffer.rindex = 0;
1573: }

Defined functions

ClearCursor defined in line 582; used 2 times
CursorToggle defined in line 510; used 21 times
HLmode defined in line 153; used 4 times
Input defined in line 1085; used 1 times
XBitmapIcon defined in line 1000; used 4 times
XExitGracefully defined in line 1027; used 2 times
XFlipColor defined in line 1400; used 1 times
XNewFont defined in line 1368; used 1 times
XPopUpWindow defined in line 1498; used 3 times
XSetFeep defined in line 1362; used 1 times
XSetFlash defined in line 1357; used 1 times
XSetOffset defined in line 1461; used 4 times
XSetWindowSize defined in line 1485; used 4 times
XTchange_line_highlight defined in line 174; used 1 times
XTclear_end_of_line defined in line 265; used 4 times
XTclear_screen defined in line 305; used 3 times
XTdelete_chars defined in line 747; used 1 times
XTextIcon defined in line 1010; used 3 times
XTfeep defined in line 493; used 2 times
XTflash defined in line 456; used 1 times
XTins_del_lines defined in line 724; used 1 times
XTinsert_chars defined in line 736; used 1 times
XTread_socket defined in line 867; used 2 times
XTreassert_line_highlight defined in line 165; used 1 times
XTreset_terminal_modes defined in line 296; used 1 times
XTset_terminal_modes defined in line 192; used 1 times
XTset_terminal_window defined in line 711; used 1 times
XTtopos defined in line 217; used 8 times
XTupdate_begin defined in line 605; used 1 times
XTupdate_end defined in line 626; used 1 times
XTwrite_chars defined in line 439; used 1 times
cleanup defined in line 256; never used
dumpchars defined in line 330; used 1 times
dumpqueue defined in line 1333; used 5 times
dumprectangle defined in line 643; used 3 times
fixxrepbuffer defined in line 1568; used 1 times
flashback defined in line 480; used 2 times
loadxrepbuffer defined in line 1543; used 2 times
refreshicon defined in line 991; used 1 times
scraplines defined in line 814; used 1 times
spacecheck defined in line 1520; used 1 times
stufflines defined in line 758; used 1 times
unloadxrepbuffer defined in line 1554; used 3 times
writechars defined in line 364; used 3 times
x_term_init defined in line 1173; used 1 times
xfixscreen defined in line 1033; used 2 times

Defined variables

CurHL defined in line 84; used 5 times
CursorExists defined in line 95; used 27 times
IconWindow defined in line 81; used 7 times
InUpdate defined in line 96; used 10 times
MouseCursor defined in line 100; used 2 times
MouseMask defined in line 104; used 2 times
PendingExposure defined in line 63; used 9 times
PendingIconExposure defined in line 64; used 3 times
SavedX defined in line 91; used 3 times
SavedY defined in line 91; used 3 times
VisibleX defined in line 89; used 27 times
VisibleY defined in line 89; used 24 times
WindowMapped defined in line 83; used 10 times
XXborder defined in line 139; used 3 times
XXcurrentfont defined in line 72; used 4 times
XXdebug defined in line 77; used 2 times
XXpid defined in line 78; used 7 times
XXxoffset defined in line 80; used 6 times
XXyoffset defined in line 80; used 6 times
back defined in line 120; used 30 times
back_color defined in line 114; used 16 times
bitblt defined in line 94; used 10 times
brdr defined in line 121; used 10 times
brdr_color defined in line 115; used 15 times
curs defined in line 122; used 11 times
curs_color defined in line 116; used 15 times
default_window defined in line 73; used 1 times
flashedback defined in line 454; used 3 times
flexlines defined in line 86; used 13 times
fore defined in line 119; used 15 times
fore_color defined in line 113; used 16 times
iconidentity defined in line 66; used 4 times
informflag defined in line 74; used 2 times
mous defined in line 123; used 12 times
mous_color defined in line 117; used 15 times
pixelheight defined in line 62; used 5 times
pixelwidth defined in line 61; used 5 times
rcsid_TrmXTERM_c defined in line 31; never used

Defined macros

ICONTAG defined in line 67; used 4 times
MAXICID defined in line 65; used 3 times
METABIT defined in line 68; used 4 times
min defined in line 57; used 2 times
sigblockx defined in line 59; never used
sigunblockx defined in line 58; never used
Last modified: 1986-03-03
Generated: 2016-12-26
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