contrib/gdb/gdb/tui/tuiWin.c

   1 /*
   2 ** tuiWin.c
   3 **    This module contains procedures for handling tui window functions
   4 **    like resize, scrolling, scrolling, changing focus, etc.
   5 **
   6 ** Author: Susan B. Macchia
   7 */
   8
   9
  10 #include <string.h>
  11 #include "defs.h"
  12 #include "command.h"
  13 #include "symtab.h"
  14 #include "breakpoint.h"
  15 #include "frame.h"
  16
  17 #include "tui.h"
  18 #include "tuiData.h"
  19 #include "tuiGeneralWin.h"
  20 #include "tuiStack.h"
  21 #include "tuiSourceWin.h"
  22 #include "tuiDataWin.h"
  23
  24 /*******************************
  25 ** External Declarations
  26 ********************************/
  27 extern void init_page_info ();
  28
  29 /*******************************
  30 ** Static Local Decls
  31 ********************************/
  32 static void _makeVisibleWithNewHeight PARAMS ((TuiWinInfoPtr));
  33 static void _makeInvisibleAndSetNewHeight PARAMS ((TuiWinInfoPtr, int));
  34 static TuiStatus _tuiAdjustWinHeights PARAMS ((TuiWinInfoPtr, int));
  35 static int _newHeightOk PARAMS ((TuiWinInfoPtr, int));
  36 static void _tuiSetTabWidth_command PARAMS ((char *, int));
  37 static void _tuiRefreshAll_command PARAMS ((char *, int));
  38 static void _tuiSetWinHeight_command PARAMS ((char *, int));
  39 static void _tuiXDBsetWinHeight_command PARAMS ((char *, int));
  40 static void _tuiAllWindowsInfo PARAMS ((char *, int));
  41 static void _tuiSetFocus_command PARAMS ((char *, int));
  42 static void _tuiScrollForward_command PARAMS ((char *, int));
  43 static void _tuiScrollBackward_command PARAMS ((char *, int));
  44 static void _tuiScrollLeft_command PARAMS ((char *, int));
  45 static void _tuiScrollRight_command PARAMS ((char *, int));
  46 static void _parseScrollingArgs PARAMS ((char *, TuiWinInfoPtr *, int *));
  47
  48
  49 /***************************************
  50 ** DEFINITIONS
  51 ***************************************/
  52 #define WIN_HEIGHT_USAGE      "Usage: winheight <win_name> [+ | -] <#lines>\n"
  53 #define XDBWIN_HEIGHT_USAGE   "Usage: w <#lines>\n"
  54 #define FOCUS_USAGE           "Usage: focus {<win> | next | prev}\n"
  55
  56 /***************************************
  57 ** PUBLIC FUNCTIONS
  58 ***************************************/
  59
  60 /*
  61 ** _initialize_tuiWin().
  62 **        Function to initialize gdb commands, for tui window manipulation.
  63 */
  64 void
  65 _initialize_tuiWin ()
  66 {
  67   if (tui_version)
  68     {
  69       add_com ("refresh", class_tui, _tuiRefreshAll_command,
  70                "Refresh the terminal display.\n");
  71       if (xdb_commands)
  72         add_com_alias ("U", "refresh", class_tui, 0);
  73       add_com ("tabset", class_tui, _tuiSetTabWidth_command,
  74                "Set the width (in characters) of tab stops.\n\
  75 Usage: tabset <n>\n");
  76       add_com ("winheight", class_tui, _tuiSetWinHeight_command,
  77                "Set the height of a specified window.\n\
  78 Usage: winheight <win_name> [+ | -] <#lines>\n\
  79 Window names are:\n\
  80 src  : the source window\n\
  81 cmd  : the command window\n\
  82 asm  : the disassembly window\n\
  83 regs : the register display\n");
  84       add_com_alias ("wh", "winheight", class_tui, 0);
  85       add_info ("win", _tuiAllWindowsInfo,
  86                 "List of all displayed windows.\n");
  87       add_com ("focus", class_tui, _tuiSetFocus_command,
  88                "Set focus to named window or next/prev window.\n\
  89 Usage: focus {<win> | next | prev}\n\
  90 Valid Window names are:\n\
  91 src  : the source window\n\
  92 asm  : the disassembly window\n\
  93 regs : the register display\n\
  94 cmd  : the command window\n");
  95       add_com_alias ("fs", "focus", class_tui, 0);
  96       add_com ("+", class_tui, _tuiScrollForward_command,
  97                "Scroll window forward.\nUsage: + [win] [n]\n");
  98       add_com ("-", class_tui, _tuiScrollBackward_command,
  99                "Scroll window backward.\nUsage: - [win] [n]\n");
 100       add_com ("<", class_tui, _tuiScrollLeft_command,
 101                "Scroll window forward.\nUsage: < [win] [n]\n");
 102       add_com (">", class_tui, _tuiScrollRight_command,
 103                "Scroll window backward.\nUsage: > [win] [n]\n");
 104       if (xdb_commands)
 105         add_com ("w", class_xdb, _tuiXDBsetWinHeight_command,
 106                  "XDB compatibility command for setting the height of a command window.\n\
 107 Usage: w <#lines>\n");
 108     }
 109
 110   return;
 111 }                               /* _intialize_tuiWin */
 112
 113
 114 /*
 115 ** tuiClearWinFocusFrom
 116 **        Clear the logical focus from winInfo
 117 */
 118 void
 119 #ifdef __STDC__
 120 tuiClearWinFocusFrom (
 121                        TuiWinInfoPtr winInfo)
 122 #else
 123 tuiClearWinFocusFrom (winInfo)
 124      TuiWinInfoPtr winInfo;
 125 #endif
 126 {
 127   if (m_winPtrNotNull (winInfo))
 128     {
 129       if (winInfo->generic.type != CMD_WIN)
 130         unhighlightWin (winInfo);
 131       tuiSetWinWithFocus ((TuiWinInfoPtr) NULL);
 132     }
 133
 134   return;
 135 }                               /* tuiClearWinFocusFrom */
 136
 137
 138 /*
 139 ** tuiClearWinFocus().
 140 **        Clear the window that has focus.
 141 */
 142 void
 143 #ifdef __STDC__
 144 tuiClearWinFocus (void)
 145 #else
 146 tuiClearWinFocus ()
 147 #endif
 148 {
 149   tuiClearWinFocusFrom (tuiWinWithFocus ());
 150
 151   return;
 152 }                               /* tuiClearWinFocus */
 153
 154
 155 /*
 156 ** tuiSetWinFocusTo
 157 **        Set the logical focus to winInfo
 158 */
 159 void
 160 #ifdef __STDC__
 161 tuiSetWinFocusTo (
 162                    TuiWinInfoPtr winInfo)
 163 #else
 164 tuiSetWinFocusTo (winInfo)
 165      TuiWinInfoPtr winInfo;
 166 #endif
 167 {
 168   if (m_winPtrNotNull (winInfo))
 169     {
 170       TuiWinInfoPtr winWithFocus = tuiWinWithFocus ();
 171
 172       if (m_winPtrNotNull (winWithFocus) &&
 173           winWithFocus->generic.type != CMD_WIN)
 174         unhighlightWin (winWithFocus);
 175       tuiSetWinWithFocus (winInfo);
 176       if (winInfo->generic.type != CMD_WIN)
 177         highlightWin (winInfo);
 178     }
 179
 180   return;
 181 }                               /* tuiSetWinFocusTo */
 182
 183
 184 char *
 185 #ifdef __STDC__
 186 tuiStrDup (
 187             char *str)
 188 #else
 189 tuiStrDup (str)
 190      char *str;
 191 #endif
 192 {
 193   char *newStr = (char *) NULL;
 194
 195   if (str != (char *) NULL)
 196     {
 197       newStr = (char *) xmalloc (strlen (str) + 1);
 198       strcpy (newStr, str);
 199     }
 200
 201   return newStr;
 202 }                               /* tuiStrDup */
 203
 204
 205 /*
 206 ** tuiScrollForward().
 207 */
 208 void
 209 #ifdef __STDC__
 210 tuiScrollForward (
 211                    TuiWinInfoPtr winToScroll,
 212                    int numToScroll)
 213 #else
 214 tuiScrollForward (winToScroll, numToScroll)
 215      TuiWinInfoPtr winToScroll;
 216      int numToScroll;
 217 #endif
 218 {
 219   if (winToScroll != cmdWin)
 220     {
 221       int _numToScroll = numToScroll;
 222
 223       if (numToScroll == 0)
 224         _numToScroll = winToScroll->generic.height - 3;
 225       /*
 226         ** If we are scrolling the source or disassembly window, do a
 227         ** "psuedo" scroll since not all of the source is in memory,
 228         ** only what is in the viewport.  If winToScroll is the
 229         ** command window do nothing since the term should handle it.
 230         */
 231       if (winToScroll == srcWin)
 232         tuiVerticalSourceScroll (FORWARD_SCROLL, _numToScroll);
 233       else if (winToScroll == disassemWin)
 234         tuiVerticalDisassemScroll (FORWARD_SCROLL, _numToScroll);
 235       else if (winToScroll == dataWin)
 236         tuiVerticalDataScroll (FORWARD_SCROLL, _numToScroll);
 237     }
 238
 239   return;
 240 }                               /* tuiScrollForward */
 241
 242
 243 /*
 244 ** tuiScrollBackward().
 245 */
 246 void
 247 #ifdef __STDC__
 248 tuiScrollBackward (
 249                     TuiWinInfoPtr winToScroll,
 250                     int numToScroll)
 251 #else
 252 tuiScrollBackward (winToScroll, numToScroll)
 253      TuiWinInfoPtr winToScroll;
 254      int numToScroll;
 255 #endif
 256 {
 257   if (winToScroll != cmdWin)
 258     {
 259       int _numToScroll = numToScroll;
 260
 261       if (numToScroll == 0)
 262         _numToScroll = winToScroll->generic.height - 3;
 263       /*
 264         ** If we are scrolling the source or disassembly window, do a
 265         ** "psuedo" scroll since not all of the source is in memory,
 266         ** only what is in the viewport.  If winToScroll is the
 267         ** command window do nothing since the term should handle it.
 268         */
 269       if (winToScroll == srcWin)
 270         tuiVerticalSourceScroll (BACKWARD_SCROLL, _numToScroll);
 271       else if (winToScroll == disassemWin)
 272         tuiVerticalDisassemScroll (BACKWARD_SCROLL, _numToScroll);
 273       else if (winToScroll == dataWin)
 274         tuiVerticalDataScroll (BACKWARD_SCROLL, _numToScroll);
 275     }
 276   return;
 277 }                               /* tuiScrollBackward */
 278
 279
 280 /*
 281 ** tuiScrollLeft().
 282 */
 283 void
 284 #ifdef __STDC__
 285 tuiScrollLeft (
 286                 TuiWinInfoPtr winToScroll,
 287                 int numToScroll)
 288 #else
 289 tuiScrollLeft (winToScroll, numToScroll)
 290      TuiWinInfoPtr winToScroll;
 291      int numToScroll;
 292 #endif
 293 {
 294   if (winToScroll != cmdWin)
 295     {
 296       int _numToScroll = numToScroll;
 297
 298       if (_numToScroll == 0)
 299         _numToScroll = 1;
 300       /*
 301         ** If we are scrolling the source or disassembly window, do a
 302         ** "psuedo" scroll since not all of the source is in memory,
 303         ** only what is in the viewport. If winToScroll is the
 304         ** command window do nothing since the term should handle it.
 305         */
 306       if (winToScroll == srcWin || winToScroll == disassemWin)
 307         tuiHorizontalSourceScroll (winToScroll, LEFT_SCROLL, _numToScroll);
 308     }
 309   return;
 310 }                               /* tuiScrollLeft */
 311
 312
 313 /*
 314 ** tuiScrollRight().
 315 */
 316 void
 317 #ifdef __STDC__
 318 tuiScrollRight (
 319                  TuiWinInfoPtr winToScroll,
 320                  int numToScroll)
 321 #else
 322 tuiScrollRight (winToScroll, numToScroll)
 323      TuiWinInfoPtr winToScroll;
 324      int numToScroll;
 325 #endif
 326 {
 327   if (winToScroll != cmdWin)
 328     {
 329       int _numToScroll = numToScroll;
 330
 331       if (_numToScroll == 0)
 332         _numToScroll = 1;
 333       /*
 334         ** If we are scrolling the source or disassembly window, do a
 335         ** "psuedo" scroll since not all of the source is in memory,
 336         ** only what is in the viewport. If winToScroll is the
 337         ** command window do nothing since the term should handle it.
 338         */
 339       if (winToScroll == srcWin || winToScroll == disassemWin)
 340         tuiHorizontalSourceScroll (winToScroll, RIGHT_SCROLL, _numToScroll);
 341     }
 342   return;
 343 }                               /* tuiScrollRight */
 344
 345
 346 /*
 347 ** tui_vScroll().
 348 **    Scroll a window.  Arguments are passed through a va_list.
 349 */
 350 void
 351 #ifdef __STDC__
 352 tui_vScroll (
 353               va_list args)
 354 #else
 355 tui_vScroll (args)
 356      va_list args;
 357 #endif
 358 {
 359   TuiScrollDirection direction = va_arg (args, TuiScrollDirection);
 360   TuiWinInfoPtr winToScroll = va_arg (args, TuiWinInfoPtr);
 361   int numToScroll = va_arg (args, int);
 362
 363   switch (direction)
 364     {
 365     case FORWARD_SCROLL:
 366       tuiScrollForward (winToScroll, numToScroll);
 367       break;
 368     case BACKWARD_SCROLL:
 369       tuiScrollBackward (winToScroll, numToScroll);
 370       break;
 371     case LEFT_SCROLL:
 372       tuiScrollLeft (winToScroll, numToScroll);
 373       break;
 374     case RIGHT_SCROLL:
 375       tuiScrollRight (winToScroll, numToScroll);
 376       break;
 377     default:
 378       break;
 379     }
 380
 381   return;
 382 }                               /* tui_vScroll */
 383
 384
 385 /*
 386 ** tuiRefreshAll().
 387 */
 388 void
 389 #ifdef __STDC__
 390 tuiRefreshAll (void)
 391 #else
 392 tuiRefreshAll ()
 393 #endif
 394 {
 395   TuiWinType type;
 396
 397   refreshAll (winList);
 398   for (type = SRC_WIN; type < MAX_MAJOR_WINDOWS; type++)
 399     {
 400       if (winList[type]->generic.isVisible)
 401         {
 402           switch (type)
 403             {
 404             case SRC_WIN:
 405             case DISASSEM_WIN:
 406               tuiClearWin (&winList[type]->generic);
 407               if (winList[type]->detail.sourceInfo.hasLocator)
 408                 tuiClearLocatorDisplay ();
 409               tuiShowSourceContent (winList[type]);
 410               checkAndDisplayHighlightIfNeeded (winList[type]);
 411               tuiEraseExecInfoContent (winList[type]);
 412               tuiUpdateExecInfo (winList[type]);
 413               break;
 414             case DATA_WIN:
 415               tuiRefreshDataWin ();
 416               break;
 417             default:
 418               break;
 419             }
 420         }
 421     }
 422   tuiClearLocatorDisplay ();
 423   tuiShowLocatorContent ();
 424
 425   return;
 426 }                               /* tuiRefreshAll */
 427
 428
 429 /*
 430 ** tuiResizeAll().
 431 **      Resize all the windows based on the the terminal size.  This
 432 **      function gets called from within the readline sinwinch handler.
 433 */
 434 void
 435 #ifdef __STDC__
 436 tuiResizeAll (void)
 437 #else
 438 tuiResizeAll ()
 439 #endif
 440 {
 441   int heightDiff, widthDiff;
 442   extern int screenheight, screenwidth; /* in readline */
 443
 444   widthDiff = screenwidth - termWidth ();
 445   heightDiff = screenheight - termHeight ();
 446   if (heightDiff || widthDiff)
 447     {
 448       TuiLayoutType curLayout = currentLayout ();
 449       TuiWinInfoPtr winWithFocus = tuiWinWithFocus ();
 450       TuiWinInfoPtr firstWin, secondWin;
 451       TuiGenWinInfoPtr locator = locatorWinInfoPtr ();
 452       TuiWinType winType;
 453       int i, newHeight, splitDiff, cmdSplitDiff, numWinsDisplayed = 2;
 454
 455       /* turn keypad off while we resize */
 456       if (winWithFocus != cmdWin)
 457         keypad (cmdWin->generic.handle, FALSE);
 458       init_page_info ();
 459       setTermHeightTo (screenheight);
 460       setTermWidthTo (screenwidth);
 461       if (curLayout == SRC_DISASSEM_COMMAND ||
 462         curLayout == SRC_DATA_COMMAND || curLayout == DISASSEM_DATA_COMMAND)
 463         numWinsDisplayed++;
 464       splitDiff = heightDiff / numWinsDisplayed;
 465       cmdSplitDiff = splitDiff;
 466       if (heightDiff % numWinsDisplayed)
 467         {
 468           if (heightDiff < 0)
 469             cmdSplitDiff--;
 470           else
 471             cmdSplitDiff++;
 472         }
 473       /* now adjust each window */
 474       clear ();
 475       refresh ();
 476       switch (curLayout)
 477         {
 478         case SRC_COMMAND:
 479         case DISASSEM_COMMAND:
 480           firstWin = (TuiWinInfoPtr) (sourceWindows ())->list[0];
 481           firstWin->generic.width += widthDiff;
 482           locator->width += widthDiff;
 483           /* check for invalid heights */
 484           if (heightDiff == 0)
 485             newHeight = firstWin->generic.height;
 486           else if ((firstWin->generic.height + splitDiff) >=
 487                    (screenheight - MIN_CMD_WIN_HEIGHT - 1))
 488             newHeight = screenheight - MIN_CMD_WIN_HEIGHT - 1;
 489           else if ((firstWin->generic.height + splitDiff) <= 0)
 490             newHeight = MIN_WIN_HEIGHT;
 491           else
 492             newHeight = firstWin->generic.height + splitDiff;
 493
 494           _makeInvisibleAndSetNewHeight (firstWin, newHeight);
 495           cmdWin->generic.origin.y = locator->origin.y + 1;
 496           cmdWin->generic.width += widthDiff;
 497           newHeight = screenheight - cmdWin->generic.origin.y;
 498           _makeInvisibleAndSetNewHeight (cmdWin, newHeight);
 499           _makeVisibleWithNewHeight (firstWin);
 500           _makeVisibleWithNewHeight (cmdWin);
 501           if (firstWin->generic.contentSize <= 0)
 502             tuiEraseSourceContent (firstWin, EMPTY_SOURCE_PROMPT);
 503           break;
 504         default:
 505           if (curLayout == SRC_DISASSEM_COMMAND)
 506             {
 507               firstWin = srcWin;
 508               firstWin->generic.width += widthDiff;
 509               secondWin = disassemWin;
 510               secondWin->generic.width += widthDiff;
 511             }
 512           else
 513             {
 514               firstWin = dataWin;
 515               firstWin->generic.width += widthDiff;
 516               secondWin = (TuiWinInfoPtr) (sourceWindows ())->list[0];
 517               secondWin->generic.width += widthDiff;
 518             }
 519           /* Change the first window's height/width */
 520           /* check for invalid heights */
 521           if (heightDiff == 0)
 522             newHeight = firstWin->generic.height;
 523           else if ((firstWin->generic.height +
 524                     secondWin->generic.height + (splitDiff * 2)) >=
 525                    (screenheight - MIN_CMD_WIN_HEIGHT - 1))
 526             newHeight = (screenheight - MIN_CMD_WIN_HEIGHT - 1) / 2;
 527           else if ((firstWin->generic.height + splitDiff) <= 0)
 528             newHeight = MIN_WIN_HEIGHT;
 529           else
 530             newHeight = firstWin->generic.height + splitDiff;
 531           _makeInvisibleAndSetNewHeight (firstWin, newHeight);
 532
 533           if (firstWin == dataWin && widthDiff != 0)
 534             firstWin->detail.dataDisplayInfo.regsColumnCount =
 535               tuiCalculateRegsColumnCount (
 536                           firstWin->detail.dataDisplayInfo.regsDisplayType);
 537           locator->width += widthDiff;
 538
 539           /* Change the second window's height/width */
 540           /* check for invalid heights */
 541           if (heightDiff == 0)
 542             newHeight = secondWin->generic.height;
 543           else if ((firstWin->generic.height +
 544                     secondWin->generic.height + (splitDiff * 2)) >=
 545                    (screenheight - MIN_CMD_WIN_HEIGHT - 1))
 546             {
 547               newHeight = screenheight - MIN_CMD_WIN_HEIGHT - 1;
 548               if (newHeight % 2)
 549                 newHeight = (newHeight / 2) + 1;
 550               else
 551                 newHeight /= 2;
 552             }
 553           else if ((secondWin->generic.height + splitDiff) <= 0)
 554             newHeight = MIN_WIN_HEIGHT;
 555           else
 556             newHeight = secondWin->generic.height + splitDiff;
 557           secondWin->generic.origin.y = firstWin->generic.height - 1;
 558           _makeInvisibleAndSetNewHeight (secondWin, newHeight);
 559
 560           /* Change the command window's height/width */
 561           cmdWin->generic.origin.y = locator->origin.y + 1;
 562           _makeInvisibleAndSetNewHeight (
 563                              cmdWin, cmdWin->generic.height + cmdSplitDiff);
 564           _makeVisibleWithNewHeight (firstWin);
 565           _makeVisibleWithNewHeight (secondWin);
 566           _makeVisibleWithNewHeight (cmdWin);
 567           if (firstWin->generic.contentSize <= 0)
 568             tuiEraseSourceContent (firstWin, EMPTY_SOURCE_PROMPT);
 569           if (secondWin->generic.contentSize <= 0)
 570             tuiEraseSourceContent (secondWin, EMPTY_SOURCE_PROMPT);
 571           break;
 572         }
 573       /*
 574         ** Now remove all invisible windows, and their content so that they get
 575         ** created again when called for with the new size
 576         */
 577       for (winType = SRC_WIN; (winType < MAX_MAJOR_WINDOWS); winType++)
 578         {
 579           if (winType != CMD_WIN && m_winPtrNotNull (winList[winType]) &&
 580               !winList[winType]->generic.isVisible)
 581             {
 582               freeWindow (winList[winType]);
 583               winList[winType] = (TuiWinInfoPtr) NULL;
 584             }
 585         }
 586       tuiSetWinResizedTo (TRUE);
 587       /* turn keypad back on, unless focus is in the command window */
 588       if (winWithFocus != cmdWin)
 589         keypad (cmdWin->generic.handle, TRUE);
 590     }
 591   return;
 592 }                               /* tuiResizeAll */
 593
 594
 595 /*
 596 ** tuiSigwinchHandler()
 597 **    SIGWINCH signal handler for the tui.  This signal handler is
 598 **    always called, even when the readline package clears signals
 599 **    because it is set as the old_sigwinch() (TUI only)
 600 */
 601 void
 602 #ifdef __STDC__
 603 tuiSigwinchHandler (
 604                      int signal)
 605 #else
 606 tuiSigwinchHandler (signal)
 607      int signal;
 608 #endif
 609 {
 610   /*
 611     ** Say that a resize was done so that the readline can do it
 612     ** later when appropriate.
 613     */
 614   tuiSetWinResizedTo (TRUE);
 615
 616   return;
 617 }                               /* tuiSigwinchHandler */
 618
 619
 620
 621 /*************************
 622 ** STATIC LOCAL FUNCTIONS
 623 **************************/
 624
 625
 626 /*
 627 ** _tuiScrollForward_command().
 628 */
 629 static void
 630 #ifdef __STDC__
 631 _tuiScrollForward_command (
 632                             char *arg,
 633                             int fromTTY)
 634 #else
 635 _tuiScrollForward_command (arg, fromTTY)
 636      char *arg;
 637      int fromTTY;
 638 #endif
 639 {
 640   int numToScroll = 1;
 641   TuiWinInfoPtr winToScroll;
 642
 643   if (arg == (char *) NULL)
 644     _parseScrollingArgs (arg, &winToScroll, (int *) NULL);
 645   else
 646     _parseScrollingArgs (arg, &winToScroll, &numToScroll);
 647   tuiDo ((TuiOpaqueFuncPtr) tui_vScroll,
 648          FORWARD_SCROLL,
 649          winToScroll,
 650          numToScroll);
 651
 652   return;
 653 }                               /* _tuiScrollForward_command */
 654
 655
 656 /*
 657 ** _tuiScrollBackward_command().
 658 */
 659 static void
 660 #ifdef __STDC__
 661 _tuiScrollBackward_command (
 662                              char *arg,
 663                              int fromTTY)
 664 #else
 665 _tuiScrollBackward_command (arg, fromTTY)
 666      char *arg;
 667      int fromTTY;
 668 #endif
 669 {
 670   int numToScroll = 1;
 671   TuiWinInfoPtr winToScroll;
 672
 673   if (arg == (char *) NULL)
 674     _parseScrollingArgs (arg, &winToScroll, (int *) NULL);
 675   else
 676     _parseScrollingArgs (arg, &winToScroll, &numToScroll);
 677   tuiDo ((TuiOpaqueFuncPtr) tui_vScroll,
 678          BACKWARD_SCROLL,
 679          winToScroll,
 680          numToScroll);
 681
 682   return;
 683 }                               /* _tuiScrollBackward_command */
 684
 685
 686 /*
 687 ** _tuiScrollLeft_command().
 688 */
 689 static void
 690 #ifdef __STDC__
 691 _tuiScrollLeft_command (
 692                          char *arg,
 693                          int fromTTY)
 694 #else
 695 _tuiScrollLeft_command (arg, fromTTY)
 696      char *arg;
 697      int fromTTY;
 698 #endif
 699 {
 700   int numToScroll;
 701   TuiWinInfoPtr winToScroll;
 702
 703   _parseScrollingArgs (arg, &winToScroll, &numToScroll);
 704   tuiDo ((TuiOpaqueFuncPtr) tui_vScroll,
 705          LEFT_SCROLL,
 706          winToScroll,
 707          numToScroll);
 708
 709   return;
 710 }                               /* _tuiScrollLeft_command */
 711
 712
 713 /*
 714 ** _tuiScrollRight_command().
 715 */
 716 static void
 717 #ifdef __STDC__
 718 _tuiScrollRight_command (
 719                           char *arg,
 720                           int fromTTY)
 721 #else
 722 _tuiScrollRight_command (arg, fromTTY)
 723      char *arg;
 724      int fromTTY;
 725 #endif
 726 {
 727   int numToScroll;
 728   TuiWinInfoPtr winToScroll;
 729
 730   _parseScrollingArgs (arg, &winToScroll, &numToScroll);
 731   tuiDo ((TuiOpaqueFuncPtr) tui_vScroll,
 732          RIGHT_SCROLL,
 733          winToScroll,
 734          numToScroll);
 735
 736   return;
 737 }                               /* _tuiScrollRight_command */
 738
 739
 740 /*
 741 ** _tuiSetFocus().
 742 **     Set focus to the window named by 'arg'
 743 */
 744 static void
 745 #ifdef __STDC__
 746 _tuiSetFocus (
 747                char *arg,
 748                int fromTTY)
 749 #else
 750 _tuiSetFocus (arg, fromTTY)
 751      char *arg;
 752      int fromTTY;
 753 #endif
 754 {
 755   if (arg != (char *) NULL)
 756     {
 757       char *bufPtr = (char *) tuiStrDup (arg);
 758       int i;
 759       TuiWinInfoPtr winInfo = (TuiWinInfoPtr) NULL;
 760
 761       for (i = 0; (i < strlen (bufPtr)); i++)
 762         bufPtr[i] = toupper (arg[i]);
 763
 764       if (subsetCompare (bufPtr, "NEXT"))
 765         winInfo = tuiNextWin (tuiWinWithFocus ());
 766       else if (subsetCompare (bufPtr, "PREV"))
 767         winInfo = tuiPrevWin (tuiWinWithFocus ());
 768       else
 769         winInfo = partialWinByName (bufPtr);
 770
 771       if (winInfo == (TuiWinInfoPtr) NULL || !winInfo->generic.isVisible)
 772         warning ("Invalid window specified. \n\
 773 The window name specified must be valid and visible.\n");
 774       else
 775         {
 776           tuiSetWinFocusTo (winInfo);
 777           keypad (cmdWin->generic.handle, (winInfo != cmdWin));
 778         }
 779
 780       if (dataWin->generic.isVisible)
 781         tuiRefreshDataWin ();
 782       tuiFree (bufPtr);
 783       printf_filtered ("Focus set to %s window.\n",
 784                        winName ((TuiGenWinInfoPtr) tuiWinWithFocus ()));
 785     }
 786   else
 787     warning ("Incorrect Number of Arguments.\n%s", FOCUS_USAGE);
 788
 789   return;
 790 }                               /* _tuiSetFocus */
 791
 792
 793 /*
 794 ** _tui_vSetFocus()
 795 */
 796 static void
 797 #ifdef __STDC__
 798 _tui_vSetFocus (
 799                  va_list args)
 800 #else
 801 _tui_vSetFocus (args)
 802      va_list args;
 803 #endif
 804 {
 805   char *arg = va_arg (args, char *);
 806   int fromTTY = va_arg (args, int);
 807
 808   _tuiSetFocus (arg, fromTTY);
 809
 810   return;
 811 }                               /* tui_vSetFocus */
 812
 813
 814 /*
 815 ** _tuiSetFocus_command()
 816 */
 817 static void
 818 #ifdef __STDC__
 819 _tuiSetFocus_command (
 820                        char *arg,
 821                        int fromTTY)
 822 #else
 823 _tuiSetFocus_command (arg, fromTTY)
 824      char *arg;
 825      int fromTTY;
 826 #endif
 827 {
 828   tuiDo ((TuiOpaqueFuncPtr) _tui_vSetFocus, arg, fromTTY);
 829
 830   return;
 831 }                               /* tui_SetFocus */
 832
 833
 834 /*
 835 ** _tuiAllWindowsInfo().
 836 */
 837 static void
 838 #ifdef __STDC__
 839 _tuiAllWindowsInfo (
 840                      char *arg,
 841                      int fromTTY)
 842 #else
 843 _tuiAllWindowsInfo (arg, fromTTY)
 844      char *arg;
 845      int fromTTY;
 846 #endif
 847 {
 848   TuiWinType type;
 849   TuiWinInfoPtr winWithFocus = tuiWinWithFocus ();
 850
 851   for (type = SRC_WIN; (type < MAX_MAJOR_WINDOWS); type++)
 852     if (winList[type]->generic.isVisible)
 853       {
 854         if (winWithFocus == winList[type])
 855           printf_filtered ("        %s\t(%d lines)  <has focus>\n",
 856                            winName (&winList[type]->generic),
 857                            winList[type]->generic.height);
 858         else
 859           printf_filtered ("        %s\t(%d lines)\n",
 860                            winName (&winList[type]->generic),
 861                            winList[type]->generic.height);
 862       }
 863
 864   return;
 865 }                               /* _tuiAllWindowsInfo */
 866
 867
 868 /*
 869 ** _tuiRefreshAll_command().
 870 */
 871 static void
 872 #ifdef __STDC__
 873 _tuiRefreshAll_command (
 874                          char *arg,
 875                          int fromTTY)
 876 #else
 877 _tuiRefreshAll_command (arg, fromTTY)
 878      char *arg;
 879      int fromTTY;
 880 #endif
 881 {
 882   tuiDo ((TuiOpaqueFuncPtr) tuiRefreshAll);
 883 }
 884
 885
 886 /*
 887 ** _tuiSetWinTabWidth_command().
 888 **        Set the height of the specified window.
 889 */
 890 static void
 891 #ifdef __STDC__
 892 _tuiSetTabWidth_command (
 893                           char *arg,
 894                           int fromTTY)
 895 #else
 896 _tuiSetTabWidth_command (arg, fromTTY)
 897      char *arg;
 898      int fromTTY;
 899 #endif
 900 {
 901   if (arg != (char *) NULL)
 902     {
 903       int ts;
 904
 905       ts = atoi (arg);
 906       if (ts > 0)
 907         tuiSetDefaultTabLen (ts);
 908       else
 909         warning ("Tab widths greater than 0 must be specified.\n");
 910     }
 911
 912   return;
 913 }                               /* _tuiSetTabWidth_command */
 914
 915
 916 /*
 917 ** _tuiSetWinHeight().
 918 **        Set the height of the specified window.
 919 */
 920 static void
 921 #ifdef __STDC__
 922 _tuiSetWinHeight (
 923                    char *arg,
 924                    int fromTTY)
 925 #else
 926 _tuiSetWinHeight (arg, fromTTY)
 927      char *arg;
 928      int fromTTY;
 929 #endif
 930 {
 931   if (arg != (char *) NULL)
 932     {
 933       char *buf = tuiStrDup (arg);
 934       char *bufPtr = buf;
 935       char *wname = (char *) NULL;
 936       int newHeight, i;
 937       TuiWinInfoPtr winInfo;
 938
 939       wname = bufPtr;
 940       bufPtr = strchr (bufPtr, ' ');
 941       if (bufPtr != (char *) NULL)
 942         {
 943           *bufPtr = (char) 0;
 944
 945           /*
 946             ** Validate the window name
 947             */
 948           for (i = 0; i < strlen (wname); i++)
 949             wname[i] = toupper (wname[i]);
 950           winInfo = partialWinByName (wname);
 951
 952           if (winInfo == (TuiWinInfoPtr) NULL || !winInfo->generic.isVisible)
 953             warning ("Invalid window specified. \n\
 954 The window name specified must be valid and visible.\n");
 955           else
 956             {
 957               /* Process the size */
 958               while (*(++bufPtr) == ' ')
 959                 ;
 960
 961               if (*bufPtr != (char) 0)
 962                 {
 963                   int negate = FALSE;
 964                   int fixedSize = TRUE;
 965                   int inputNo;;
 966
 967                   if (*bufPtr == '+' || *bufPtr == '-')
 968                     {
 969                       if (*bufPtr == '-')
 970                         negate = TRUE;
 971                       fixedSize = FALSE;
 972                       bufPtr++;
 973                     }
 974                   inputNo = atoi (bufPtr);
 975                   if (inputNo > 0)
 976                     {
 977                       if (negate)
 978                         inputNo *= (-1);
 979                       if (fixedSize)
 980                         newHeight = inputNo;
 981                       else
 982                         newHeight = winInfo->generic.height + inputNo;
 983                       /*
 984                         ** Now change the window's height, and adjust all
 985                         ** other windows around it
 986                         */
 987                       if (_tuiAdjustWinHeights (winInfo,
 988                                                 newHeight) == TUI_FAILURE)
 989                         warning ("Invalid window height specified.\n%s",
 990                                  WIN_HEIGHT_USAGE);
 991                       else
 992                         init_page_info ();
 993                     }
 994                   else
 995                     warning ("Invalid window height specified.\n%s",
 996                              WIN_HEIGHT_USAGE);
 997                 }
 998             }
 999         }
1000       else
1001         printf_filtered (WIN_HEIGHT_USAGE);
1002
1003       if (buf != (char *) NULL)
1004         tuiFree (buf);
1005     }
1006   else
1007     printf_filtered (WIN_HEIGHT_USAGE);
1008
1009   return;
1010 }                               /* _tuiSetWinHeight */
1011
1012
1013 /*
1014 ** _tui_vSetWinHeight().
1015 **        Set the height of the specified window, with va_list.
1016 */
1017 static void
1018 #ifdef __STDC__
1019 _tui_vSetWinHeight (
1020                      va_list args)
1021 #else
1022 _tui_vSetWinHeight (args)
1023      va_list args;
1024 #endif
1025 {
1026   char *arg = va_arg (args, char *);
1027   int fromTTY = va_arg (args, int);
1028
1029   _tuiSetWinHeight (arg, fromTTY);
1030
1031   return;
1032 }                               /* _tui_vSetWinHeight */
1033
1034
1035 /*
1036 ** _tuiSetWinHeight_command().
1037 **        Set the height of the specified window, with va_list.
1038 */
1039 static void
1040 #ifdef __STDC__
1041 _tuiSetWinHeight_command (
1042                            char *arg,
1043                            int fromTTY)
1044 #else
1045 _tuiSetWinHeight_command (arg, fromTTY)
1046      char *arg;
1047      int fromTTY;
1048 #endif
1049 {
1050   tuiDo ((TuiOpaqueFuncPtr) _tui_vSetWinHeight, arg, fromTTY);
1051
1052   return;
1053 }                               /* _tuiSetWinHeight_command */
1054
1055
1056 /*
1057 ** _tuiXDBsetWinHeight().
1058 **        XDB Compatibility command for setting the window height.  This will
1059 **        increase or decrease the command window by the specified amount.
1060 */
1061 static void
1062 #ifdef __STDC__
1063 _tuiXDBsetWinHeight (
1064                       char *arg,
1065                       int fromTTY)
1066 #else
1067 _tuiXDBsetWinHeight (arg, fromTTY)
1068      char *arg;
1069      int fromTTY;
1070 #endif
1071 {
1072   if (arg != (char *) NULL)
1073     {
1074       int inputNo = atoi (arg);
1075
1076       if (inputNo > 0)
1077         {                       /* Add 1 for the locator */
1078           int newHeight = termHeight () - (inputNo + 1);
1079
1080           if (!_newHeightOk (winList[CMD_WIN], newHeight) ||
1081               _tuiAdjustWinHeights (winList[CMD_WIN],
1082                                     newHeight) == TUI_FAILURE)
1083             warning ("Invalid window height specified.\n%s",
1084                      XDBWIN_HEIGHT_USAGE);
1085         }
1086       else
1087         warning ("Invalid window height specified.\n%s",
1088                  XDBWIN_HEIGHT_USAGE);
1089     }
1090   else
1091     warning ("Invalid window height specified.\n%s", XDBWIN_HEIGHT_USAGE);
1092
1093   return;
1094 }                               /* _tuiXDBsetWinHeight */
1095
1096
1097 /*
1098 ** _tui_vXDBsetWinHeight().
1099 **        Set the height of the specified window, with va_list.
1100 */
1101 static void
1102 #ifdef __STDC__
1103 _tui_vXDBsetWinHeight (
1104                         va_list args)
1105 #else
1106 _tui_vXDBsetWinHeight (args)
1107      va_list args;
1108 #endif
1109 {
1110   char *arg = va_arg (args, char *);
1111   int fromTTY = va_arg (args, int);
1112
1113   _tuiXDBsetWinHeight (arg, fromTTY);
1114
1115   return;
1116 }                               /* _tui_vXDBsetWinHeight */
1117
1118
1119 /*
1120 ** _tuiSetWinHeight_command().
1121 **        Set the height of the specified window, with va_list.
1122 */
1123 static void
1124 #ifdef __STDC__
1125 _tuiXDBsetWinHeight_command (
1126                               char *arg,
1127                               int fromTTY)
1128 #else
1129 _tuiXDBsetWinHeight_command (arg, fromTTY)
1130      char *arg;
1131      int fromTTY;
1132 #endif
1133 {
1134   tuiDo ((TuiOpaqueFuncPtr) _tui_vXDBsetWinHeight, arg, fromTTY);
1135
1136   return;
1137 }                               /* _tuiXDBsetWinHeight_command */
1138
1139
1140 /*
1141 ** _tuiAdjustWinHeights().
1142 **        Function to adjust all window heights around the primary
1143 */
1144 static TuiStatus
1145 #ifdef __STDC__
1146 _tuiAdjustWinHeights (
1147                        TuiWinInfoPtr primaryWinInfo,
1148                        int newHeight)
1149 #else
1150 _tuiAdjustWinHeights (primaryWinInfo, newHeight)
1151      TuiWinInfoPtr primaryWinInfo;
1152      int newHeight;
1153 #endif
1154 {
1155   TuiStatus status = TUI_FAILURE;
1156
1157   if (_newHeightOk (primaryWinInfo, newHeight))
1158     {
1159       status = TUI_SUCCESS;
1160       if (newHeight != primaryWinInfo->generic.height)
1161         {
1162           int i, diff;
1163           TuiWinInfoPtr winInfo;
1164           TuiGenWinInfoPtr locator = locatorWinInfoPtr ();
1165           TuiLayoutType curLayout = currentLayout ();
1166
1167           diff = (newHeight - primaryWinInfo->generic.height) * (-1);
1168           if (curLayout == SRC_COMMAND || curLayout == DISASSEM_COMMAND)
1169             {
1170               TuiWinInfoPtr srcWinInfo;
1171
1172               _makeInvisibleAndSetNewHeight (primaryWinInfo, newHeight);
1173               if (primaryWinInfo->generic.type == CMD_WIN)
1174                 {
1175                   winInfo = (TuiWinInfoPtr) (sourceWindows ())->list[0];
1176                   srcWinInfo = winInfo;
1177                 }
1178               else
1179                 {
1180                   winInfo = winList[CMD_WIN];
1181                   srcWinInfo = primaryWinInfo;
1182                 }
1183               _makeInvisibleAndSetNewHeight (winInfo,
1184                                              winInfo->generic.height + diff);
1185               cmdWin->generic.origin.y = locator->origin.y + 1;
1186               _makeVisibleWithNewHeight (winInfo);
1187               _makeVisibleWithNewHeight (primaryWinInfo);
1188               if (srcWinInfo->generic.contentSize <= 0)
1189                 tuiEraseSourceContent (srcWinInfo, EMPTY_SOURCE_PROMPT);
1190             }
1191           else
1192             {
1193               TuiWinInfoPtr firstWin, secondWin;
1194
1195               if (curLayout == SRC_DISASSEM_COMMAND)
1196                 {
1197                   firstWin = srcWin;
1198                   secondWin = disassemWin;
1199                 }
1200               else
1201                 {
1202                   firstWin = dataWin;
1203                   secondWin = (TuiWinInfoPtr) (sourceWindows ())->list[0];
1204                 }
1205               if (primaryWinInfo == cmdWin)
1206                 {               /*
1207                     ** Split the change in height accross the 1st & 2nd windows
1208                     ** adjusting them as well.
1209                     */
1210                   int firstSplitDiff = diff / 2;        /* subtract the locator */
1211                   int secondSplitDiff = firstSplitDiff;
1212
1213                   if (diff % 2)
1214                     {
1215                       if (firstWin->generic.height >
1216                           secondWin->generic.height)
1217                         if (diff < 0)
1218                           firstSplitDiff--;
1219                         else
1220                           firstSplitDiff++;
1221                       else
1222                         {
1223                           if (diff < 0)
1224                             secondSplitDiff--;
1225                           else
1226                             secondSplitDiff++;
1227                         }
1228                     }
1229                   /* make sure that the minimum hieghts are honored */
1230                   while ((firstWin->generic.height + firstSplitDiff) < 3)
1231                     {
1232                       firstSplitDiff++;
1233                       secondSplitDiff--;
1234                     }
1235                   while ((secondWin->generic.height + secondSplitDiff) < 3)
1236                     {
1237                       secondSplitDiff++;
1238                       firstSplitDiff--;
1239                     }
1240                   _makeInvisibleAndSetNewHeight (
1241                                                   firstWin,
1242                                  firstWin->generic.height + firstSplitDiff);
1243                   secondWin->generic.origin.y = firstWin->generic.height - 1;
1244                   _makeInvisibleAndSetNewHeight (
1245                     secondWin, secondWin->generic.height + secondSplitDiff);
1246                   cmdWin->generic.origin.y = locator->origin.y + 1;
1247                   _makeInvisibleAndSetNewHeight (cmdWin, newHeight);
1248                 }
1249               else
1250                 {
1251                   if ((cmdWin->generic.height + diff) < 1)
1252                     {           /*
1253                         ** If there is no way to increase the command window
1254                         ** take real estate from the 1st or 2nd window.
1255                         */
1256                       if ((cmdWin->generic.height + diff) < 1)
1257                         {
1258                           int i;
1259                           for (i = cmdWin->generic.height + diff;
1260                                (i < 1); i++)
1261                             if (primaryWinInfo == firstWin)
1262                               secondWin->generic.height--;
1263                             else
1264                               firstWin->generic.height--;
1265                         }
1266                     }
1267                   if (primaryWinInfo == firstWin)
1268                     _makeInvisibleAndSetNewHeight (firstWin, newHeight);
1269                   else
1270                     _makeInvisibleAndSetNewHeight (
1271                                                     firstWin,
1272                                                   firstWin->generic.height);
1273                   secondWin->generic.origin.y = firstWin->generic.height - 1;
1274                   if (primaryWinInfo == secondWin)
1275                     _makeInvisibleAndSetNewHeight (secondWin, newHeight);
1276                   else
1277                     _makeInvisibleAndSetNewHeight (
1278                                       secondWin, secondWin->generic.height);
1279                   cmdWin->generic.origin.y = locator->origin.y + 1;
1280                   if ((cmdWin->generic.height + diff) < 1)
1281                     _makeInvisibleAndSetNewHeight (cmdWin, 1);
1282                   else
1283                     _makeInvisibleAndSetNewHeight (
1284                                      cmdWin, cmdWin->generic.height + diff);
1285                 }
1286               _makeVisibleWithNewHeight (cmdWin);
1287               _makeVisibleWithNewHeight (secondWin);
1288               _makeVisibleWithNewHeight (firstWin);
1289               if (firstWin->generic.contentSize <= 0)
1290                 tuiEraseSourceContent (firstWin, EMPTY_SOURCE_PROMPT);
1291               if (secondWin->generic.contentSize <= 0)
1292                 tuiEraseSourceContent (secondWin, EMPTY_SOURCE_PROMPT);
1293             }
1294         }
1295     }
1296
1297   return status;
1298 }                               /* _tuiAdjustWinHeights */
1299
1300
1301 /*
1302 ** _makeInvisibleAndSetNewHeight().
1303 **        Function make the target window (and auxillary windows associated
1304 **        with the targer) invisible, and set the new height and location.
1305 */
1306 static void
1307 #ifdef __STDC__
1308 _makeInvisibleAndSetNewHeight (
1309                                 TuiWinInfoPtr winInfo,
1310                                 int height)
1311 #else
1312 _makeInvisibleAndSetNewHeight (winInfo, height)
1313      TuiWinInfoPtr winInfo;
1314      int height;
1315 #endif
1316 {
1317   int i;
1318   struct symtab *s;
1319   TuiGenWinInfoPtr genWinInfo;
1320
1321
1322   m_beInvisible (&winInfo->generic);
1323   winInfo->generic.height = height;
1324   if (height > 1)
1325     winInfo->generic.viewportHeight = height - 1;
1326   else
1327     winInfo->generic.viewportHeight = height;
1328   if (winInfo != cmdWin)
1329     winInfo->generic.viewportHeight--;
1330
1331   /* Now deal with the auxillary windows associated with winInfo */
1332   switch (winInfo->generic.type)
1333     {
1334     case SRC_WIN:
1335     case DISASSEM_WIN:
1336       genWinInfo = winInfo->detail.sourceInfo.executionInfo;
1337       m_beInvisible (genWinInfo);
1338       genWinInfo->height = height;
1339       genWinInfo->origin.y = winInfo->generic.origin.y;
1340       if (height > 1)
1341         genWinInfo->viewportHeight = height - 1;
1342       else
1343         genWinInfo->viewportHeight = height;
1344       if (winInfo != cmdWin)
1345         genWinInfo->viewportHeight--;
1346
1347       if (m_hasLocator (winInfo))
1348         {
1349           genWinInfo = locatorWinInfoPtr ();
1350           m_beInvisible (genWinInfo);
1351           genWinInfo->origin.y = winInfo->generic.origin.y + height;
1352         }
1353       break;
1354     case DATA_WIN:
1355       /* delete all data item windows */
1356       for (i = 0; i < winInfo->generic.contentSize; i++)
1357         {
1358           genWinInfo = (TuiGenWinInfoPtr) & ((TuiWinElementPtr)
1359                       winInfo->generic.content[i])->whichElement.dataWindow;
1360           tuiDelwin (genWinInfo->handle);
1361           genWinInfo->handle = (WINDOW *) NULL;
1362         }
1363       break;
1364     default:
1365       break;
1366     }
1367
1368   return;
1369 }                               /* _makeInvisibleAndSetNewHeight */
1370
1371
1372 /*
1373 ** _makeVisibleWithNewHeight().
1374 **        Function to make the windows with new heights visible.
1375 **        This means re-creating the windows' content since the window
1376 **        had to be destroyed to be made invisible.
1377 */
1378 static void
1379 #ifdef __STDC__
1380 _makeVisibleWithNewHeight (
1381                             TuiWinInfoPtr winInfo)
1382 #else
1383 _makeVisibleWithNewHeight (winInfo)
1384      TuiWinInfoPtr winInfo;
1385 #endif
1386 {
1387   int i;
1388   struct symtab *s;
1389
1390   m_beVisible (&winInfo->generic);
1391   checkAndDisplayHighlightIfNeeded (winInfo);
1392   switch (winInfo->generic.type)
1393     {
1394     case SRC_WIN:
1395     case DISASSEM_WIN:
1396       freeWinContent (winInfo->detail.sourceInfo.executionInfo);
1397       m_beVisible (winInfo->detail.sourceInfo.executionInfo);
1398       if (winInfo->generic.content != (OpaquePtr) NULL)
1399         {
1400           TuiLineOrAddress lineOrAddr;
1401
1402           if (winInfo->generic.type == SRC_WIN)
1403             lineOrAddr.lineNo =
1404               winInfo->detail.sourceInfo.startLineOrAddr.lineNo;
1405           else
1406             lineOrAddr.addr =
1407               winInfo->detail.sourceInfo.startLineOrAddr.addr;
1408           freeWinContent (&winInfo->generic);
1409           tuiUpdateSourceWindow (winInfo,
1410                                  current_source_symtab,
1411                                  ((winInfo->generic.type == SRC_WIN) ?
1412                                   (Opaque) lineOrAddr.lineNo :
1413                                   lineOrAddr.addr),
1414                                  TRUE);
1415         }
1416       else if (selected_frame != (struct frame_info *) NULL)
1417         {
1418           Opaque line = 0;
1419           extern int current_source_line;
1420
1421           s = find_pc_symtab (selected_frame->pc);
1422           if (winInfo->generic.type == SRC_WIN)
1423             line = (Opaque) current_source_line;
1424           else
1425             line = (Opaque) find_line_pc (s, current_source_line);
1426           tuiUpdateSourceWindow (winInfo, s, line, TRUE);
1427         }
1428       if (m_hasLocator (winInfo))
1429         {
1430           m_beVisible (locatorWinInfoPtr ());
1431           tuiClearLocatorDisplay ();
1432           tuiShowLocatorContent ();
1433         }
1434       break;
1435     case DATA_WIN:
1436       tuiDisplayAllData ();
1437       break;
1438     case CMD_WIN:
1439       winInfo->detail.commandInfo.curLine = 0;
1440       winInfo->detail.commandInfo.curch = 0;
1441       wmove (winInfo->generic.handle,
1442              winInfo->detail.commandInfo.curLine,
1443              winInfo->detail.commandInfo.curch);
1444       break;
1445     default:
1446       break;
1447     }
1448
1449   return;
1450 }                               /* _makeVisibleWithNewHeight */
1451
1452
1453 static int
1454 #ifdef __STDC__
1455 _newHeightOk (
1456                TuiWinInfoPtr primaryWinInfo,
1457                int newHeight)
1458 #else
1459 _newHeightOk (primaryWinInfo, newHeight)
1460      TuiWinInfoPtr primaryWinInfo;
1461      int newHeight;
1462 #endif
1463 {
1464   int ok = (newHeight < termHeight ());
1465
1466   if (ok)
1467     {
1468       int diff, curHeight;
1469       TuiLayoutType curLayout = currentLayout ();
1470
1471       diff = (newHeight - primaryWinInfo->generic.height) * (-1);
1472       if (curLayout == SRC_COMMAND || curLayout == DISASSEM_COMMAND)
1473         {
1474           ok = ((primaryWinInfo->generic.type == CMD_WIN &&
1475                  newHeight <= (termHeight () - 4) &&
1476                  newHeight >= MIN_CMD_WIN_HEIGHT) ||
1477                 (primaryWinInfo->generic.type != CMD_WIN &&
1478                  newHeight <= (termHeight () - 2) &&
1479                  newHeight >= MIN_WIN_HEIGHT));
1480           if (ok)
1481             {                   /* check the total height */
1482               TuiWinInfoPtr winInfo;
1483
1484               if (primaryWinInfo == cmdWin)
1485                 winInfo = (TuiWinInfoPtr) (sourceWindows ())->list[0];
1486               else
1487                 winInfo = cmdWin;
1488               ok = ((newHeight +
1489                      (winInfo->generic.height + diff)) <= termHeight ());
1490             }
1491         }
1492       else
1493         {
1494           int curTotalHeight, totalHeight, minHeight;
1495           TuiWinInfoPtr firstWin, secondWin;
1496
1497           if (curLayout == SRC_DISASSEM_COMMAND)
1498             {
1499               firstWin = srcWin;
1500               secondWin = disassemWin;
1501             }
1502           else
1503             {
1504               firstWin = dataWin;
1505               secondWin = (TuiWinInfoPtr) (sourceWindows ())->list[0];
1506             }
1507           /*
1508             ** We could simply add all the heights to obtain the same result
1509             ** but below is more explicit since we subtract 1 for the
1510             ** line that the first and second windows share, and add one
1511             ** for the locator.
1512             */
1513           curTotalHeight =
1514             (firstWin->generic.height + secondWin->generic.height - 1)
1515             + cmdWin->generic.height + 1 /*locator*/ ;
1516           if (primaryWinInfo == cmdWin)
1517             {
1518               /* locator included since first & second win share a line */
1519               ok = ((firstWin->generic.height +
1520                      secondWin->generic.height + diff) >=
1521                     (MIN_WIN_HEIGHT * 2) &&
1522                     newHeight >= MIN_CMD_WIN_HEIGHT);
1523               if (ok)
1524                 {
1525                   totalHeight = newHeight + (firstWin->generic.height +
1526                                           secondWin->generic.height + diff);
1527                   minHeight = MIN_CMD_WIN_HEIGHT;
1528                 }
1529             }
1530           else
1531             {
1532               minHeight = MIN_WIN_HEIGHT;
1533               /*
1534                 ** First see if we can increase/decrease the command
1535                 ** window.  And make sure that the command window is
1536                 ** at least 1 line
1537                 */
1538               ok = ((cmdWin->generic.height + diff) > 0);
1539               if (!ok)
1540                 {               /*
1541                      ** Looks like we have to increase/decrease one of
1542                      ** the other windows
1543                      */
1544                   if (primaryWinInfo == firstWin)
1545                     ok = (secondWin->generic.height + diff) >= minHeight;
1546                   else
1547                     ok = (firstWin->generic.height + diff) >= minHeight;
1548                 }
1549               if (ok)
1550                 {
1551                   if (primaryWinInfo == firstWin)
1552                     totalHeight = newHeight +
1553                       secondWin->generic.height +
1554                       cmdWin->generic.height + diff;
1555                   else
1556                     totalHeight = newHeight +
1557                       firstWin->generic.height +
1558                       cmdWin->generic.height + diff;
1559                 }
1560             }
1561           /*
1562             ** Now make sure that the proposed total height doesn't exceed
1563             ** the old total height.
1564             */
1565           if (ok)
1566             ok = (newHeight >= minHeight && totalHeight <= curTotalHeight);
1567         }
1568     }
1569
1570   return ok;
1571 }                               /* _newHeightOk */
1572
1573
1574 /*
1575 ** _parseScrollingArgs().
1576 */
1577 static void
1578 #ifdef __STDC__
1579 _parseScrollingArgs (
1580                       char *arg,
1581                       TuiWinInfoPtr * winToScroll,
1582                       int *numToScroll)
1583 #else
1584 _parseScrollingArgs (arg, winToScroll, numToScroll)
1585      char *arg;
1586      TuiWinInfoPtr *winToScroll;
1587      int *numToScroll;
1588 #endif
1589 {
1590   if (numToScroll)
1591     *numToScroll = 0;
1592   *winToScroll = tuiWinWithFocus ();
1593
1594   /*
1595     ** First set up the default window to scroll, in case there is no
1596     ** window name arg
1597     */
1598   if (arg != (char *) NULL)
1599     {
1600       char *buf, *bufPtr;
1601
1602       /* process the number of lines to scroll */
1603       buf = bufPtr = tuiStrDup (arg);
1604       if (isdigit (*bufPtr))
1605         {
1606           char *numStr;
1607
1608           numStr = bufPtr;
1609           bufPtr = strchr (bufPtr, ' ');
1610           if (bufPtr != (char *) NULL)
1611             {
1612               *bufPtr = (char) 0;
1613               if (numToScroll)
1614                 *numToScroll = atoi (numStr);
1615               bufPtr++;
1616             }
1617           else if (numToScroll)
1618             *numToScroll = atoi (numStr);
1619         }
1620
1621       /* process the window name if one is specified */
1622       if (bufPtr != (char *) NULL)
1623         {
1624           char *wname;
1625           int i;
1626
1627           if (*bufPtr == ' ')
1628             while (*(++bufPtr) == ' ')
1629               ;
1630
1631           if (*bufPtr != (char) 0)
1632             wname = bufPtr;
1633
1634           /* Validate the window name */
1635           for (i = 0; i < strlen (wname); i++)
1636             wname[i] = toupper (wname[i]);
1637           *winToScroll = partialWinByName (wname);
1638
1639           if (*winToScroll == (TuiWinInfoPtr) NULL ||
1640               !(*winToScroll)->generic.isVisible)
1641             warning ("Invalid window specified. \n\
1642 The window name specified must be valid and visible.\n");
1643           else if (*winToScroll == cmdWin)
1644             *winToScroll = (TuiWinInfoPtr) (sourceWindows ())->list[0];
1645         }
1646       tuiFree (buf);
1647     }
1648
1649   return;
1650 }                               /* _parseScrollingArgs */