gdb/tui/tui-layout.c

   1 /* TUI layout window management.
   2
   3    Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software
   4    Foundation, Inc.
   5
   6    Contributed by Hewlett-Packard Company.
   7
   8    This file is part of GDB.
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 2 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 59 Temple Place - Suite 330,
  23    Boston, MA 02111-1307, USA.  */
  24
  25 #include "defs.h"
  26 #include "command.h"
  27 #include "symtab.h"
  28 #include "frame.h"
  29 #include "source.h"
  30 #include <ctype.h>
  31
  32 #include "tui/tui.h"
  33 #include "tui/tui-data.h"
  34 #include "tui/tui-windata.h"
  35 #include "tui/tui-wingeneral.h"
  36 #include "tui/tui-stack.h"
  37 #include "tui/tui-regs.h"
  38 #include "tui/tui-win.h"
  39 #include "tui/tui-winsource.h"
  40 #include "tui/tui-disasm.h"
  41
  42 #ifdef HAVE_NCURSES_H
  43 #include <ncurses.h>
  44 #else
  45 #ifdef HAVE_CURSES_H
  46 #include <curses.h>
  47 #endif
  48 #endif
  49
  50 /*******************************
  51 ** Static Local Decls
  52 ********************************/
  53 static void showLayout (TuiLayoutType);
  54 static void _initGenWinInfo (TuiGenWinInfoPtr, TuiWinType, int, int, int, int);
  55 static void _initAndMakeWin (Opaque *, TuiWinType, int, int, int, int, int);
  56 static void _showSourceOrDisassemAndCommand (TuiLayoutType);
  57 static void _makeSourceOrDisassemWindow (TuiWinInfoPtr *, TuiWinType, int, int);
  58 static void _makeCommandWindow (TuiWinInfoPtr *, int, int);
  59 static void _makeSourceWindow (TuiWinInfoPtr *, int, int);
  60 static void _makeDisassemWindow (TuiWinInfoPtr *, int, int);
  61 static void _makeDataWindow (TuiWinInfoPtr *, int, int);
  62 static void _showSourceCommand (void);
  63 static void _showDisassemCommand (void);
  64 static void _showSourceDisassemCommand (void);
  65 static void _showData (TuiLayoutType);
  66 static TuiLayoutType _nextLayout (void);
  67 static TuiLayoutType _prevLayout (void);
  68 static void _tuiLayout_command (char *, int);
  69 static void _tuiToggleLayout_command (char *, int);
  70 static void _tuiToggleSplitLayout_command (char *, int);
  71 static CORE_ADDR _extractDisplayStartAddr (void);
  72 static void _tuiHandleXDBLayout (TuiLayoutDefPtr);
  73
  74
  75 /***************************************
  76 ** DEFINITIONS
  77 ***************************************/
  78
  79 #define LAYOUT_USAGE     "Usage: layout prev | next | <layout_name> \n"
  80
  81 /* Show the screen layout defined.  */
  82 static void
  83 showLayout (TuiLayoutType layout)
  84 {
  85   TuiLayoutType curLayout = currentLayout ();
  86
  87   if (layout != curLayout)
  88     {
  89       /*
  90          ** Since the new layout may cause changes in window size, we
  91          ** should free the content and reallocate on next display of
  92          ** source/asm
  93        */
  94       freeAllSourceWinsContent ();
  95       clearSourceWindows ();
  96       if (layout == SRC_DATA_COMMAND || layout == DISASSEM_DATA_COMMAND)
  97         {
  98           _showData (layout);
  99           tui_refresh_all (winList);
 100         }
 101       else
 102         {
 103           /* First make the current layout be invisible */
 104           tui_make_all_invisible ();
 105           tui_make_invisible (locatorWinInfoPtr ());
 106
 107           switch (layout)
 108             {
 109               /* Now show the new layout */
 110             case SRC_COMMAND:
 111               _showSourceCommand ();
 112               addToSourceWindows (srcWin);
 113               break;
 114             case DISASSEM_COMMAND:
 115               _showDisassemCommand ();
 116               addToSourceWindows (disassemWin);
 117               break;
 118             case SRC_DISASSEM_COMMAND:
 119               _showSourceDisassemCommand ();
 120               addToSourceWindows (srcWin);
 121               addToSourceWindows (disassemWin);
 122               break;
 123             default:
 124               break;
 125             }
 126         }
 127     }
 128 }
 129
 130
 131 /* Function to set the layout to SRC_COMMAND, DISASSEM_COMMAND,
 132    SRC_DISASSEM_COMMAND, SRC_DATA_COMMAND, or DISASSEM_DATA_COMMAND.
 133    If the layout is SRC_DATA_COMMAND, DISASSEM_DATA_COMMAND, or
 134    UNDEFINED_LAYOUT, then the data window is populated according to
 135    regsDisplayType.  */
 136 enum tui_status
 137 tui_set_layout (enum tui_layout_type layoutType,
 138                 enum tui_register_display_type regsDisplayType)
 139 {
 140   TuiStatus status = TUI_SUCCESS;
 141
 142   if (layoutType != UNDEFINED_LAYOUT || regsDisplayType != TUI_UNDEFINED_REGS)
 143     {
 144       TuiLayoutType curLayout = currentLayout (), newLayout = UNDEFINED_LAYOUT;
 145       int regsPopulate = FALSE;
 146       CORE_ADDR addr = _extractDisplayStartAddr ();
 147       TuiWinInfoPtr newWinWithFocus = (TuiWinInfoPtr) NULL, winWithFocus = tuiWinWithFocus ();
 148       TuiLayoutDefPtr layoutDef = tuiLayoutDef ();
 149
 150
 151       if (layoutType == UNDEFINED_LAYOUT &&
 152           regsDisplayType != TUI_UNDEFINED_REGS)
 153         {
 154           if (curLayout == SRC_DISASSEM_COMMAND)
 155             newLayout = DISASSEM_DATA_COMMAND;
 156           else if (curLayout == SRC_COMMAND || curLayout == SRC_DATA_COMMAND)
 157             newLayout = SRC_DATA_COMMAND;
 158           else if (curLayout == DISASSEM_COMMAND ||
 159                    curLayout == DISASSEM_DATA_COMMAND)
 160             newLayout = DISASSEM_DATA_COMMAND;
 161         }
 162       else
 163         newLayout = layoutType;
 164
 165       regsPopulate = (newLayout == SRC_DATA_COMMAND ||
 166                       newLayout == DISASSEM_DATA_COMMAND ||
 167                       regsDisplayType != TUI_UNDEFINED_REGS);
 168       if (newLayout != curLayout || regsDisplayType != TUI_UNDEFINED_REGS)
 169         {
 170           if (newLayout != curLayout)
 171             {
 172               showLayout (newLayout);
 173               /*
 174                  ** Now determine where focus should be
 175                */
 176               if (winWithFocus != cmdWin)
 177                 {
 178                   switch (newLayout)
 179                     {
 180                     case SRC_COMMAND:
 181                       tui_set_win_focus_to (srcWin);
 182                       layoutDef->displayMode = SRC_WIN;
 183                       layoutDef->split = FALSE;
 184                       break;
 185                     case DISASSEM_COMMAND:
 186                       /* the previous layout was not showing
 187                          ** code. this can happen if there is no
 188                          ** source available:
 189                          ** 1. if the source file is in another dir OR
 190                          ** 2. if target was compiled without -g
 191                          ** We still want to show the assembly though!
 192                        */
 193                       addr = tui_get_begin_asm_address ();
 194                       tui_set_win_focus_to (disassemWin);
 195                       layoutDef->displayMode = DISASSEM_WIN;
 196                       layoutDef->split = FALSE;
 197                       break;
 198                     case SRC_DISASSEM_COMMAND:
 199                       /* the previous layout was not showing
 200                          ** code. this can happen if there is no
 201                          ** source available:
 202                          ** 1. if the source file is in another dir OR
 203                          ** 2. if target was compiled without -g
 204                          ** We still want to show the assembly though!
 205                        */
 206                       addr = tui_get_begin_asm_address ();
 207                       if (winWithFocus == srcWin)
 208                         tui_set_win_focus_to (srcWin);
 209                       else
 210                         tui_set_win_focus_to (disassemWin);
 211                       layoutDef->split = TRUE;
 212                       break;
 213                     case SRC_DATA_COMMAND:
 214                       if (winWithFocus != dataWin)
 215                         tui_set_win_focus_to (srcWin);
 216                       else
 217                         tui_set_win_focus_to (dataWin);
 218                       layoutDef->displayMode = SRC_WIN;
 219                       layoutDef->split = FALSE;
 220                       break;
 221                     case DISASSEM_DATA_COMMAND:
 222                       /* the previous layout was not showing
 223                          ** code. this can happen if there is no
 224                          ** source available:
 225                          ** 1. if the source file is in another dir OR
 226                          ** 2. if target was compiled without -g
 227                          ** We still want to show the assembly though!
 228                        */
 229                       addr = tui_get_begin_asm_address ();
 230                       if (winWithFocus != dataWin)
 231                         tui_set_win_focus_to (disassemWin);
 232                       else
 233                         tui_set_win_focus_to (dataWin);
 234                       layoutDef->displayMode = DISASSEM_WIN;
 235                       layoutDef->split = FALSE;
 236                       break;
 237                     default:
 238                       break;
 239                     }
 240                 }
 241               if (newWinWithFocus != (TuiWinInfoPtr) NULL)
 242                 tui_set_win_focus_to (newWinWithFocus);
 243               /*
 244                  ** Now update the window content
 245                */
 246               if (!regsPopulate &&
 247                   (newLayout == SRC_DATA_COMMAND ||
 248                    newLayout == DISASSEM_DATA_COMMAND))
 249                 tui_display_all_data ();
 250
 251               tui_update_source_windows_with_addr (addr);
 252             }
 253           if (regsPopulate)
 254             {
 255               layoutDef->regsDisplayType =
 256                 (regsDisplayType == TUI_UNDEFINED_REGS ?
 257                  TUI_GENERAL_REGS : regsDisplayType);
 258               tui_show_registers (layoutDef->regsDisplayType);
 259             }
 260         }
 261     }
 262   else
 263     status = TUI_FAILURE;
 264
 265   return status;
 266 }
 267
 268 /* Add the specified window to the layout in a logical way.  This
 269    means setting up the most logical layout given the window to be
 270    added.  */
 271 void
 272 tui_add_win_to_layout (enum tui_win_type type)
 273 {
 274   TuiLayoutType curLayout = currentLayout ();
 275
 276   switch (type)
 277     {
 278     case SRC_WIN:
 279       if (curLayout != SRC_COMMAND &&
 280           curLayout != SRC_DISASSEM_COMMAND &&
 281           curLayout != SRC_DATA_COMMAND)
 282         {
 283           clearSourceWindowsDetail ();
 284           if (curLayout == DISASSEM_DATA_COMMAND)
 285             showLayout (SRC_DATA_COMMAND);
 286           else
 287             showLayout (SRC_COMMAND);
 288         }
 289       break;
 290     case DISASSEM_WIN:
 291       if (curLayout != DISASSEM_COMMAND &&
 292           curLayout != SRC_DISASSEM_COMMAND &&
 293           curLayout != DISASSEM_DATA_COMMAND)
 294         {
 295           clearSourceWindowsDetail ();
 296           if (curLayout == SRC_DATA_COMMAND)
 297             showLayout (DISASSEM_DATA_COMMAND);
 298           else
 299             showLayout (DISASSEM_COMMAND);
 300         }
 301       break;
 302     case DATA_WIN:
 303       if (curLayout != SRC_DATA_COMMAND &&
 304           curLayout != DISASSEM_DATA_COMMAND)
 305         {
 306           if (curLayout == DISASSEM_COMMAND)
 307             showLayout (DISASSEM_DATA_COMMAND);
 308           else
 309             showLayout (SRC_DATA_COMMAND);
 310         }
 311       break;
 312     default:
 313       break;
 314     }
 315
 316   return;
 317 }                               /* tuiAddWinToLayout */
 318
 319
 320 /*
 321    ** tuiDefaultWinHeight().
 322    **        Answer the height of a window.  If it hasn't been created yet,
 323    **        answer what the height of a window would be based upon its
 324    **        type and the layout.
 325  */
 326 int
 327 tuiDefaultWinHeight (TuiWinType type, TuiLayoutType layout)
 328 {
 329   int h;
 330
 331   if (winList[type] != (TuiWinInfoPtr) NULL)
 332     h = winList[type]->generic.height;
 333   else
 334     {
 335       switch (layout)
 336         {
 337         case SRC_COMMAND:
 338         case DISASSEM_COMMAND:
 339           if (m_winPtrIsNull (cmdWin))
 340             h = termHeight () / 2;
 341           else
 342             h = termHeight () - cmdWin->generic.height;
 343           break;
 344         case SRC_DISASSEM_COMMAND:
 345         case SRC_DATA_COMMAND:
 346         case DISASSEM_DATA_COMMAND:
 347           if (m_winPtrIsNull (cmdWin))
 348             h = termHeight () / 3;
 349           else
 350             h = (termHeight () - cmdWin->generic.height) / 2;
 351           break;
 352         default:
 353           h = 0;
 354           break;
 355         }
 356     }
 357
 358   return h;
 359 }                               /* tuiDefaultWinHeight */
 360
 361
 362 /* Answer the height of a window.  If it hasn't been created yet,
 363    answer what the height of a window would be based upon its type and
 364    the layout.  */
 365 int
 366 tui_default_win_viewport_height (enum tui_win_type type,
 367                                  enum tui_layout_type layout)
 368 {
 369   int h;
 370
 371   h = tuiDefaultWinHeight (type, layout);
 372
 373   if (winList[type] == cmdWin)
 374     h -= 1;
 375   else
 376     h -= 2;
 377
 378   return h;
 379 }                               /* tuiDefaultWinViewportHeight */
 380
 381
 382 /*
 383    ** _initialize_tuiLayout().
 384    **        Function to initialize gdb commands, for tui window layout
 385    **        manipulation.
 386  */
 387 void
 388 _initialize_tuiLayout (void)
 389 {
 390   add_com ("layout", class_tui, _tuiLayout_command,
 391            "Change the layout of windows.\n\
 392 Usage: layout prev | next | <layout_name> \n\
 393 Layout names are:\n\
 394    src   : Displays source and command windows.\n\
 395    asm   : Displays disassembly and command windows.\n\
 396    split : Displays source, disassembly and command windows.\n\
 397    regs  : Displays register window. If existing layout\n\
 398            is source/command or assembly/command, the \n\
 399            register window is displayed. If the\n\
 400            source/assembly/command (split) is displayed, \n\
 401            the register window is displayed with \n\
 402            the window that has current logical focus.\n");
 403   if (xdb_commands)
 404     {
 405       add_com ("td", class_tui, _tuiToggleLayout_command,
 406                "Toggle between Source/Command and Disassembly/Command layouts.\n");
 407       add_com ("ts", class_tui, _tuiToggleSplitLayout_command,
 408                "Toggle between Source/Command or Disassembly/Command and \n\
 409 Source/Disassembly/Command layouts.\n");
 410     }
 411 }
 412
 413
 414 /*************************
 415 ** STATIC LOCAL FUNCTIONS
 416 **************************/
 417
 418
 419 /*
 420    ** _tuiSetLayoutTo()
 421    **    Function to set the layout to SRC, ASM, SPLIT, NEXT, PREV, DATA, REGS,
 422    **        $REGS, $GREGS, $FREGS, $SREGS.
 423  */
 424 TuiStatus
 425 tui_set_layout_for_display_command (const char *layoutName)
 426 {
 427   TuiStatus status = TUI_SUCCESS;
 428
 429   if (layoutName != (char *) NULL)
 430     {
 431       register int i;
 432       register char *bufPtr;
 433       TuiLayoutType newLayout = UNDEFINED_LAYOUT;
 434       TuiRegisterDisplayType dpyType = TUI_UNDEFINED_REGS;
 435       TuiLayoutType curLayout = currentLayout ();
 436
 437       bufPtr = (char *) xstrdup (layoutName);
 438       for (i = 0; (i < strlen (layoutName)); i++)
 439         bufPtr[i] = toupper (bufPtr[i]);
 440
 441       /* First check for ambiguous input */
 442       if (strlen (bufPtr) <= 1 && (*bufPtr == 'S' || *bufPtr == '$'))
 443         {
 444           warning ("Ambiguous command input.\n");
 445           status = TUI_FAILURE;
 446         }
 447       else
 448         {
 449           if (subset_compare (bufPtr, "SRC"))
 450             newLayout = SRC_COMMAND;
 451           else if (subset_compare (bufPtr, "ASM"))
 452             newLayout = DISASSEM_COMMAND;
 453           else if (subset_compare (bufPtr, "SPLIT"))
 454             newLayout = SRC_DISASSEM_COMMAND;
 455           else if (subset_compare (bufPtr, "REGS") ||
 456                    subset_compare (bufPtr, TUI_GENERAL_SPECIAL_REGS_NAME) ||
 457                    subset_compare (bufPtr, TUI_GENERAL_REGS_NAME) ||
 458                    subset_compare (bufPtr, TUI_FLOAT_REGS_NAME) ||
 459                    subset_compare (bufPtr, TUI_SPECIAL_REGS_NAME))
 460             {
 461               if (curLayout == SRC_COMMAND || curLayout == SRC_DATA_COMMAND)
 462                 newLayout = SRC_DATA_COMMAND;
 463               else
 464                 newLayout = DISASSEM_DATA_COMMAND;
 465
 466 /* could ifdef out the following code. when compile with -z, there are null
 467    pointer references that cause a core dump if 'layout regs' is the first
 468    layout command issued by the user. HP has asked us to hook up this code
 469    - edie epstein
 470  */
 471               if (subset_compare (bufPtr, TUI_FLOAT_REGS_NAME))
 472                 {
 473                   if (dataWin->detail.dataDisplayInfo.regsDisplayType !=
 474                       TUI_SFLOAT_REGS &&
 475                       dataWin->detail.dataDisplayInfo.regsDisplayType !=
 476                       TUI_DFLOAT_REGS)
 477                     dpyType = TUI_SFLOAT_REGS;
 478                   else
 479                     dpyType =
 480                       dataWin->detail.dataDisplayInfo.regsDisplayType;
 481                 }
 482               else if (subset_compare (bufPtr,
 483                                       TUI_GENERAL_SPECIAL_REGS_NAME))
 484                 dpyType = TUI_GENERAL_AND_SPECIAL_REGS;
 485               else if (subset_compare (bufPtr, TUI_GENERAL_REGS_NAME))
 486                 dpyType = TUI_GENERAL_REGS;
 487               else if (subset_compare (bufPtr, TUI_SPECIAL_REGS_NAME))
 488                 dpyType = TUI_SPECIAL_REGS;
 489               else if (dataWin)
 490                 {
 491                   if (dataWin->detail.dataDisplayInfo.regsDisplayType !=
 492                       TUI_UNDEFINED_REGS)
 493                     dpyType =
 494                       dataWin->detail.dataDisplayInfo.regsDisplayType;
 495                   else
 496                     dpyType = TUI_GENERAL_REGS;
 497                 }
 498
 499 /* end of potential ifdef
 500  */
 501
 502 /* if ifdefed out code above, then assume that the user wishes to display the
 503    general purpose registers
 504  */
 505
 506 /*              dpyType = TUI_GENERAL_REGS;
 507  */
 508             }
 509           else if (subset_compare (bufPtr, "NEXT"))
 510             newLayout = _nextLayout ();
 511           else if (subset_compare (bufPtr, "PREV"))
 512             newLayout = _prevLayout ();
 513           else
 514             status = TUI_FAILURE;
 515           xfree (bufPtr);
 516
 517           tui_set_layout (newLayout, dpyType);
 518         }
 519     }
 520   else
 521     status = TUI_FAILURE;
 522
 523   return status;
 524 }
 525
 526
 527 static CORE_ADDR
 528 _extractDisplayStartAddr (void)
 529 {
 530   TuiLayoutType curLayout = currentLayout ();
 531   CORE_ADDR addr;
 532   CORE_ADDR pc;
 533   struct symtab_and_line cursal = get_current_source_symtab_and_line ();
 534
 535   switch (curLayout)
 536     {
 537     case SRC_COMMAND:
 538     case SRC_DATA_COMMAND:
 539       find_line_pc (cursal.symtab,
 540                     srcWin->detail.sourceInfo.startLineOrAddr.lineNo,
 541                     &pc);
 542       addr = pc;
 543       break;
 544     case DISASSEM_COMMAND:
 545     case SRC_DISASSEM_COMMAND:
 546     case DISASSEM_DATA_COMMAND:
 547       addr = disassemWin->detail.sourceInfo.startLineOrAddr.addr;
 548       break;
 549     default:
 550       addr = 0;
 551       break;
 552     }
 553
 554   return addr;
 555 }                               /* _extractDisplayStartAddr */
 556
 557
 558 static void
 559 _tuiHandleXDBLayout (TuiLayoutDefPtr layoutDef)
 560 {
 561   if (layoutDef->split)
 562     {
 563       tui_set_layout (SRC_DISASSEM_COMMAND, TUI_UNDEFINED_REGS);
 564       tui_set_win_focus_to (winList[layoutDef->displayMode]);
 565     }
 566   else
 567     {
 568       if (layoutDef->displayMode == SRC_WIN)
 569         tui_set_layout (SRC_COMMAND, TUI_UNDEFINED_REGS);
 570       else
 571         tui_set_layout (DISASSEM_DATA_COMMAND, layoutDef->regsDisplayType);
 572     }
 573
 574
 575   return;
 576 }                               /* _tuiHandleXDBLayout */
 577
 578
 579 static void
 580 _tuiToggleLayout_command (char *arg, int fromTTY)
 581 {
 582   TuiLayoutDefPtr layoutDef = tuiLayoutDef ();
 583
 584   /* Make sure the curses mode is enabled.  */
 585   tui_enable ();
 586   if (layoutDef->displayMode == SRC_WIN)
 587     layoutDef->displayMode = DISASSEM_WIN;
 588   else
 589     layoutDef->displayMode = SRC_WIN;
 590
 591   if (!layoutDef->split)
 592     _tuiHandleXDBLayout (layoutDef);
 593
 594 }
 595
 596
 597 static void
 598 _tuiToggleSplitLayout_command (char *arg, int fromTTY)
 599 {
 600   TuiLayoutDefPtr layoutDef = tuiLayoutDef ();
 601
 602   /* Make sure the curses mode is enabled.  */
 603   tui_enable ();
 604   layoutDef->split = (!layoutDef->split);
 605   _tuiHandleXDBLayout (layoutDef);
 606
 607 }
 608
 609
 610 static void
 611 _tuiLayout_command (char *arg, int fromTTY)
 612 {
 613   /* Make sure the curses mode is enabled.  */
 614   tui_enable ();
 615
 616   /* Switch to the selected layout.  */
 617   if (tui_set_layout_for_display_command (arg) != TUI_SUCCESS)
 618     warning ("Invalid layout specified.\n%s", LAYOUT_USAGE);
 619
 620 }
 621
 622 /*
 623    ** _nextLayout().
 624    **        Answer the previous layout to cycle to.
 625  */
 626 static TuiLayoutType
 627 _nextLayout (void)
 628 {
 629   TuiLayoutType newLayout;
 630
 631   newLayout = currentLayout ();
 632   if (newLayout == UNDEFINED_LAYOUT)
 633     newLayout = SRC_COMMAND;
 634   else
 635     {
 636       newLayout++;
 637       if (newLayout == UNDEFINED_LAYOUT)
 638         newLayout = SRC_COMMAND;
 639     }
 640
 641   return newLayout;
 642 }                               /* _nextLayout */
 643
 644
 645 /*
 646    ** _prevLayout().
 647    **        Answer the next layout to cycle to.
 648  */
 649 static TuiLayoutType
 650 _prevLayout (void)
 651 {
 652   TuiLayoutType newLayout;
 653
 654   newLayout = currentLayout ();
 655   if (newLayout == SRC_COMMAND)
 656     newLayout = DISASSEM_DATA_COMMAND;
 657   else
 658     {
 659       newLayout--;
 660       if (newLayout == UNDEFINED_LAYOUT)
 661         newLayout = DISASSEM_DATA_COMMAND;
 662     }
 663
 664   return newLayout;
 665 }                               /* _prevLayout */
 666
 667
 668
 669 /*
 670    ** _makeCommandWindow().
 671  */
 672 static void
 673 _makeCommandWindow (TuiWinInfoPtr * winInfoPtr, int height, int originY)
 674 {
 675   _initAndMakeWin ((Opaque *) winInfoPtr,
 676                    CMD_WIN,
 677                    height,
 678                    termWidth (),
 679                    0,
 680                    originY,
 681                    DONT_BOX_WINDOW);
 682
 683   (*winInfoPtr)->canHighlight = FALSE;
 684
 685   return;
 686 }                               /* _makeCommandWindow */
 687
 688
 689 /*
 690    ** _makeSourceWindow().
 691  */
 692 static void
 693 _makeSourceWindow (TuiWinInfoPtr * winInfoPtr, int height, int originY)
 694 {
 695   _makeSourceOrDisassemWindow (winInfoPtr, SRC_WIN, height, originY);
 696
 697   return;
 698 }                               /* _makeSourceWindow */
 699
 700
 701 /*
 702    ** _makeDisassemWindow().
 703  */
 704 static void
 705 _makeDisassemWindow (TuiWinInfoPtr * winInfoPtr, int height, int originY)
 706 {
 707   _makeSourceOrDisassemWindow (winInfoPtr, DISASSEM_WIN, height, originY);
 708
 709   return;
 710 }                               /* _makeDisassemWindow */
 711
 712
 713 /*
 714    ** _makeDataWindow().
 715  */
 716 static void
 717 _makeDataWindow (TuiWinInfoPtr * winInfoPtr, int height, int originY)
 718 {
 719   _initAndMakeWin ((Opaque *) winInfoPtr,
 720                    DATA_WIN,
 721                    height,
 722                    termWidth (),
 723                    0,
 724                    originY,
 725                    BOX_WINDOW);
 726
 727   return;
 728 }                               /* _makeDataWindow */
 729
 730
 731
 732 /*
 733    **    _showSourceCommand().
 734    **        Show the Source/Command layout
 735  */
 736 static void
 737 _showSourceCommand (void)
 738 {
 739   _showSourceOrDisassemAndCommand (SRC_COMMAND);
 740
 741   return;
 742 }                               /* _showSourceCommand */
 743
 744
 745 /*
 746    **    _showDisassemCommand().
 747    **        Show the Dissassem/Command layout
 748  */
 749 static void
 750 _showDisassemCommand (void)
 751 {
 752   _showSourceOrDisassemAndCommand (DISASSEM_COMMAND);
 753
 754   return;
 755 }                               /* _showDisassemCommand */
 756
 757
 758 /*
 759    **    _showSourceDisassemCommand().
 760    **        Show the Source/Disassem/Command layout
 761  */
 762 static void
 763 _showSourceDisassemCommand (void)
 764 {
 765   if (currentLayout () != SRC_DISASSEM_COMMAND)
 766     {
 767       int cmdHeight, srcHeight, asmHeight;
 768
 769       if (m_winPtrNotNull (cmdWin))
 770         cmdHeight = cmdWin->generic.height;
 771       else
 772         cmdHeight = termHeight () / 3;
 773
 774       srcHeight = (termHeight () - cmdHeight) / 2;
 775       asmHeight = termHeight () - (srcHeight + cmdHeight);
 776
 777       if (m_winPtrIsNull (srcWin))
 778         _makeSourceWindow (&srcWin, srcHeight, 0);
 779       else
 780         {
 781           _initGenWinInfo (&srcWin->generic,
 782                            srcWin->generic.type,
 783                            srcHeight,
 784                            srcWin->generic.width,
 785                            srcWin->detail.sourceInfo.executionInfo->width,
 786                            0);
 787           srcWin->canHighlight = TRUE;
 788           _initGenWinInfo (srcWin->detail.sourceInfo.executionInfo,
 789                            EXEC_INFO_WIN,
 790                            srcHeight,
 791                            3,
 792                            0,
 793                            0);
 794           tui_make_visible (&srcWin->generic);
 795           tui_make_visible (srcWin->detail.sourceInfo.executionInfo);
 796           srcWin->detail.sourceInfo.hasLocator = FALSE;;
 797         }
 798       if (m_winPtrNotNull (srcWin))
 799         {
 800           TuiGenWinInfoPtr locator = locatorWinInfoPtr ();
 801
 802           tui_show_source_content (srcWin);
 803           if (m_winPtrIsNull (disassemWin))
 804             {
 805               _makeDisassemWindow (&disassemWin, asmHeight, srcHeight - 1);
 806               _initAndMakeWin ((Opaque *) & locator,
 807                                LOCATOR_WIN,
 808                                2 /* 1 */ ,
 809                                termWidth (),
 810                                0,
 811                                (srcHeight + asmHeight) - 1,
 812                                DONT_BOX_WINDOW);
 813             }
 814           else
 815             {
 816               _initGenWinInfo (locator,
 817                                LOCATOR_WIN,
 818                                2 /* 1 */ ,
 819                                termWidth (),
 820                                0,
 821                                (srcHeight + asmHeight) - 1);
 822               disassemWin->detail.sourceInfo.hasLocator = TRUE;
 823               _initGenWinInfo (
 824                                 &disassemWin->generic,
 825                                 disassemWin->generic.type,
 826                                 asmHeight,
 827                                 disassemWin->generic.width,
 828                         disassemWin->detail.sourceInfo.executionInfo->width,
 829                                 srcHeight - 1);
 830               _initGenWinInfo (disassemWin->detail.sourceInfo.executionInfo,
 831                                EXEC_INFO_WIN,
 832                                asmHeight,
 833                                3,
 834                                0,
 835                                srcHeight - 1);
 836               disassemWin->canHighlight = TRUE;
 837               tui_make_visible (&disassemWin->generic);
 838               tui_make_visible (disassemWin->detail.sourceInfo.executionInfo);
 839             }
 840           if (m_winPtrNotNull (disassemWin))
 841             {
 842               srcWin->detail.sourceInfo.hasLocator = FALSE;
 843               disassemWin->detail.sourceInfo.hasLocator = TRUE;
 844               tui_make_visible (locator);
 845               tui_show_locator_content ();
 846               tui_show_source_content (disassemWin);
 847
 848               if (m_winPtrIsNull (cmdWin))
 849                 _makeCommandWindow (&cmdWin,
 850                                     cmdHeight,
 851                                     termHeight () - cmdHeight);
 852               else
 853                 {
 854                   _initGenWinInfo (&cmdWin->generic,
 855                                    cmdWin->generic.type,
 856                                    cmdWin->generic.height,
 857                                    cmdWin->generic.width,
 858                                    0,
 859                                    cmdWin->generic.origin.y);
 860                   cmdWin->canHighlight = FALSE;
 861                   tui_make_visible (&cmdWin->generic);
 862                 }
 863               if (m_winPtrNotNull (cmdWin))
 864                 tui_refresh_win (&cmdWin->generic);
 865             }
 866         }
 867       setCurrentLayoutTo (SRC_DISASSEM_COMMAND);
 868     }
 869
 870   return;
 871 }                               /* _showSourceDisassemCommand */
 872
 873
 874 /*
 875    **    _showData().
 876    **        Show the Source/Data/Command or the Dissassembly/Data/Command layout
 877  */
 878 static void
 879 _showData (TuiLayoutType newLayout)
 880 {
 881   int totalHeight = (termHeight () - cmdWin->generic.height);
 882   int srcHeight, dataHeight;
 883   TuiWinType winType;
 884   TuiGenWinInfoPtr locator = locatorWinInfoPtr ();
 885
 886
 887   dataHeight = totalHeight / 2;
 888   srcHeight = totalHeight - dataHeight;
 889   tui_make_all_invisible ();
 890   tui_make_invisible (locator);
 891   _makeDataWindow (&dataWin, dataHeight, 0);
 892   dataWin->canHighlight = TRUE;
 893   if (newLayout == SRC_DATA_COMMAND)
 894     winType = SRC_WIN;
 895   else
 896     winType = DISASSEM_WIN;
 897   if (m_winPtrIsNull (winList[winType]))
 898     {
 899       if (winType == SRC_WIN)
 900         _makeSourceWindow (&winList[winType], srcHeight, dataHeight - 1);
 901       else
 902         _makeDisassemWindow (&winList[winType], srcHeight, dataHeight - 1);
 903       _initAndMakeWin ((Opaque *) & locator,
 904                        LOCATOR_WIN,
 905                        2 /* 1 */ ,
 906                        termWidth (),
 907                        0,
 908                        totalHeight - 1,
 909                        DONT_BOX_WINDOW);
 910     }
 911   else
 912     {
 913       _initGenWinInfo (&winList[winType]->generic,
 914                        winList[winType]->generic.type,
 915                        srcHeight,
 916                        winList[winType]->generic.width,
 917                    winList[winType]->detail.sourceInfo.executionInfo->width,
 918                        dataHeight - 1);
 919       _initGenWinInfo (winList[winType]->detail.sourceInfo.executionInfo,
 920                        EXEC_INFO_WIN,
 921                        srcHeight,
 922                        3,
 923                        0,
 924                        dataHeight - 1);
 925       tui_make_visible (&winList[winType]->generic);
 926       tui_make_visible (winList[winType]->detail.sourceInfo.executionInfo);
 927       _initGenWinInfo (locator,
 928                        LOCATOR_WIN,
 929                        2 /* 1 */ ,
 930                        termWidth (),
 931                        0,
 932                        totalHeight - 1);
 933     }
 934   winList[winType]->detail.sourceInfo.hasLocator = TRUE;
 935   tui_make_visible (locator);
 936   tui_show_locator_content ();
 937   addToSourceWindows (winList[winType]);
 938   setCurrentLayoutTo (newLayout);
 939
 940   return;
 941 }                               /* _showData */
 942
 943 /*
 944    ** _initGenWinInfo().
 945  */
 946 static void
 947 _initGenWinInfo (TuiGenWinInfoPtr winInfo, TuiWinType type,
 948                  int height, int width, int originX, int originY)
 949 {
 950   int h = height;
 951
 952   winInfo->type = type;
 953   winInfo->width = width;
 954   winInfo->height = h;
 955   if (h > 1)
 956     {
 957       winInfo->viewportHeight = h - 1;
 958       if (winInfo->type != CMD_WIN)
 959         winInfo->viewportHeight--;
 960     }
 961   else
 962     winInfo->viewportHeight = 1;
 963   winInfo->origin.x = originX;
 964   winInfo->origin.y = originY;
 965
 966   return;
 967 }                               /* _initGenWinInfo */
 968
 969 /*
 970    ** _initAndMakeWin().
 971  */
 972 static void
 973 _initAndMakeWin (Opaque * winInfoPtr, TuiWinType winType,
 974                  int height, int width, int originX, int originY, int boxIt)
 975 {
 976   Opaque opaqueWinInfo = *winInfoPtr;
 977   TuiGenWinInfoPtr generic;
 978
 979   if (opaqueWinInfo == (Opaque) NULL)
 980     {
 981       if (m_winIsAuxillary (winType))
 982         opaqueWinInfo = (Opaque) allocGenericWinInfo ();
 983       else
 984         opaqueWinInfo = (Opaque) allocWinInfo (winType);
 985     }
 986   if (m_winIsAuxillary (winType))
 987     generic = (TuiGenWinInfoPtr) opaqueWinInfo;
 988   else
 989     generic = &((TuiWinInfoPtr) opaqueWinInfo)->generic;
 990
 991   if (opaqueWinInfo != (Opaque) NULL)
 992     {
 993       _initGenWinInfo (generic, winType, height, width, originX, originY);
 994       if (!m_winIsAuxillary (winType))
 995         {
 996           if (generic->type == CMD_WIN)
 997             ((TuiWinInfoPtr) opaqueWinInfo)->canHighlight = FALSE;
 998           else
 999             ((TuiWinInfoPtr) opaqueWinInfo)->canHighlight = TRUE;
1000         }
1001       tui_make_window (generic, boxIt);
1002     }
1003   *winInfoPtr = opaqueWinInfo;
1004 }
1005
1006
1007 /*
1008    ** _makeSourceOrDisassemWindow().
1009  */
1010 static void
1011 _makeSourceOrDisassemWindow (TuiWinInfoPtr * winInfoPtr, TuiWinType type,
1012                              int height, int originY)
1013 {
1014   TuiGenWinInfoPtr executionInfo = (TuiGenWinInfoPtr) NULL;
1015
1016   /*
1017      ** Create the exeuction info window.
1018    */
1019   if (type == SRC_WIN)
1020     executionInfo = sourceExecInfoWinPtr ();
1021   else
1022     executionInfo = disassemExecInfoWinPtr ();
1023   _initAndMakeWin ((Opaque *) & executionInfo,
1024                    EXEC_INFO_WIN,
1025                    height,
1026                    3,
1027                    0,
1028                    originY,
1029                    DONT_BOX_WINDOW);
1030   /*
1031      ** Now create the source window.
1032    */
1033   _initAndMakeWin ((Opaque *) winInfoPtr,
1034                    type,
1035                    height,
1036                    termWidth () - executionInfo->width,
1037                    executionInfo->width,
1038                    originY,
1039                    BOX_WINDOW);
1040
1041   (*winInfoPtr)->detail.sourceInfo.executionInfo = executionInfo;
1042
1043   return;
1044 }                               /* _makeSourceOrDisassemWindow */
1045
1046
1047 /*
1048    **    _showSourceOrDisassemAndCommand().
1049    **        Show the Source/Command or the Disassem layout
1050  */
1051 static void
1052 _showSourceOrDisassemAndCommand (TuiLayoutType layoutType)
1053 {
1054   if (currentLayout () != layoutType)
1055     {
1056       TuiWinInfoPtr *winInfoPtr;
1057       int srcHeight, cmdHeight;
1058       TuiGenWinInfoPtr locator = locatorWinInfoPtr ();
1059
1060       if (m_winPtrNotNull (cmdWin))
1061         cmdHeight = cmdWin->generic.height;
1062       else
1063         cmdHeight = termHeight () / 3;
1064       srcHeight = termHeight () - cmdHeight;
1065
1066
1067       if (layoutType == SRC_COMMAND)
1068         winInfoPtr = &srcWin;
1069       else
1070         winInfoPtr = &disassemWin;
1071
1072       if (m_winPtrIsNull (*winInfoPtr))
1073         {
1074           if (layoutType == SRC_COMMAND)
1075             _makeSourceWindow (winInfoPtr, srcHeight - 1, 0);
1076           else
1077             _makeDisassemWindow (winInfoPtr, srcHeight - 1, 0);
1078           _initAndMakeWin ((Opaque *) & locator,
1079                            LOCATOR_WIN,
1080                            2 /* 1 */ ,
1081                            termWidth (),
1082                            0,
1083                            srcHeight - 1,
1084                            DONT_BOX_WINDOW);
1085         }
1086       else
1087         {
1088           _initGenWinInfo (locator,
1089                            LOCATOR_WIN,
1090                            2 /* 1 */ ,
1091                            termWidth (),
1092                            0,
1093                            srcHeight - 1);
1094           (*winInfoPtr)->detail.sourceInfo.hasLocator = TRUE;
1095           _initGenWinInfo (
1096                             &(*winInfoPtr)->generic,
1097                             (*winInfoPtr)->generic.type,
1098                             srcHeight - 1,
1099                             (*winInfoPtr)->generic.width,
1100                       (*winInfoPtr)->detail.sourceInfo.executionInfo->width,
1101                             0);
1102           _initGenWinInfo ((*winInfoPtr)->detail.sourceInfo.executionInfo,
1103                            EXEC_INFO_WIN,
1104                            srcHeight - 1,
1105                            3,
1106                            0,
1107                            0);
1108           (*winInfoPtr)->canHighlight = TRUE;
1109           tui_make_visible (&(*winInfoPtr)->generic);
1110           tui_make_visible ((*winInfoPtr)->detail.sourceInfo.executionInfo);
1111         }
1112       if (m_winPtrNotNull (*winInfoPtr))
1113         {
1114           (*winInfoPtr)->detail.sourceInfo.hasLocator = TRUE;
1115           tui_make_visible (locator);
1116           tui_show_locator_content ();
1117           tui_show_source_content (*winInfoPtr);
1118
1119           if (m_winPtrIsNull (cmdWin))
1120             {
1121               _makeCommandWindow (&cmdWin, cmdHeight, srcHeight);
1122               tui_refresh_win (&cmdWin->generic);
1123             }
1124           else
1125             {
1126               _initGenWinInfo (&cmdWin->generic,
1127                                cmdWin->generic.type,
1128                                cmdWin->generic.height,
1129                                cmdWin->generic.width,
1130                                cmdWin->generic.origin.x,
1131                                cmdWin->generic.origin.y);
1132               cmdWin->canHighlight = FALSE;
1133               tui_make_visible (&cmdWin->generic);
1134             }
1135         }
1136       setCurrentLayoutTo (layoutType);
1137     }
1138
1139   return;
1140 }                               /* _showSourceOrDisassemAndCommand */