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#include "gdb_string.h"
43#include "gdb_curses.h"
44
45/*******************************
46** Static Local Decls
47********************************/
48static void show_layout (enum tui_layout_type);
49static void init_gen_win_info (struct tui_gen_win_info *, enum tui_win_type, int, int, int, int);
50static void init_and_make_win (void **, enum tui_win_type, int, int, int, int, int);
51static void show_source_or_disasm_and_command (enum tui_layout_type);
52static void make_source_or_disasm_window (struct tui_win_info * *, enum tui_win_type, int, int);
53static void make_command_window (struct tui_win_info * *, int, int);
54static void make_source_window (struct tui_win_info * *, int, int);
55static void make_disasm_window (struct tui_win_info * *, int, int);
56static void make_data_window (struct tui_win_info * *, int, int);
57static void show_source_command (void);
58static void show_disasm_command (void);
59static void show_source_disasm_command (void);
60static void show_data (enum tui_layout_type);
61static enum tui_layout_type next_layout (void);
62static enum tui_layout_type prev_layout (void);
63static void tui_layout_command (char *, int);
64static void tui_toggle_layout_command (char *, int);
65static void tui_toggle_split_layout_command (char *, int);
66static CORE_ADDR extract_display_start_addr (void);
67static void tui_handle_xdb_layout (struct tui_layout_def *);
68
69
70/***************************************
71** DEFINITIONS
72***************************************/
73
74#define LAYOUT_USAGE     "Usage: layout prev | next | <layout_name> \n"
75
76/* Show the screen layout defined.  */
77static void
78show_layout (enum tui_layout_type layout)
79{
80  enum tui_layout_type cur_layout = tui_current_layout ();
81
82  if (layout != cur_layout)
83    {
84      /*
85         ** Since the new layout may cause changes in window size, we
86         ** should free the content and reallocate on next display of
87         ** source/asm
88       */
89      tui_free_all_source_wins_content ();
90      tui_clear_source_windows ();
91      if (layout == SRC_DATA_COMMAND || layout == DISASSEM_DATA_COMMAND)
92	{
93	  show_data (layout);
94	  tui_refresh_all (tui_win_list);
95	}
96      else
97	{
98	  /* First make the current layout be invisible */
99	  tui_make_all_invisible ();
100	  tui_make_invisible (tui_locator_win_info_ptr ());
101
102	  switch (layout)
103	    {
104	      /* Now show the new layout */
105	    case SRC_COMMAND:
106	      show_source_command ();
107	      tui_add_to_source_windows (TUI_SRC_WIN);
108	      break;
109	    case DISASSEM_COMMAND:
110	      show_disasm_command ();
111	      tui_add_to_source_windows (TUI_DISASM_WIN);
112	      break;
113	    case SRC_DISASSEM_COMMAND:
114	      show_source_disasm_command ();
115	      tui_add_to_source_windows (TUI_SRC_WIN);
116	      tui_add_to_source_windows (TUI_DISASM_WIN);
117	      break;
118	    default:
119	      break;
120	    }
121	}
122    }
123}
124
125
126/* Function to set the layout to SRC_COMMAND, DISASSEM_COMMAND,
127   SRC_DISASSEM_COMMAND, SRC_DATA_COMMAND, or DISASSEM_DATA_COMMAND.
128   If the layout is SRC_DATA_COMMAND, DISASSEM_DATA_COMMAND, or
129   UNDEFINED_LAYOUT, then the data window is populated according to
130   regs_display_type.  */
131enum tui_status
132tui_set_layout (enum tui_layout_type layout_type,
133		enum tui_register_display_type regs_display_type)
134{
135  enum tui_status status = TUI_SUCCESS;
136
137  if (layout_type != UNDEFINED_LAYOUT || regs_display_type != TUI_UNDEFINED_REGS)
138    {
139      enum tui_layout_type cur_layout = tui_current_layout (), new_layout = UNDEFINED_LAYOUT;
140      int regs_populate = FALSE;
141      CORE_ADDR addr = extract_display_start_addr ();
142      struct tui_win_info * new_win_with_focus = (struct tui_win_info *) NULL;
143      struct tui_win_info * win_with_focus = tui_win_with_focus ();
144      struct tui_layout_def * layout_def = tui_layout_def ();
145
146
147      if (layout_type == UNDEFINED_LAYOUT &&
148	  regs_display_type != TUI_UNDEFINED_REGS)
149	{
150	  if (cur_layout == SRC_DISASSEM_COMMAND)
151	    new_layout = DISASSEM_DATA_COMMAND;
152	  else if (cur_layout == SRC_COMMAND || cur_layout == SRC_DATA_COMMAND)
153	    new_layout = SRC_DATA_COMMAND;
154	  else if (cur_layout == DISASSEM_COMMAND ||
155		   cur_layout == DISASSEM_DATA_COMMAND)
156	    new_layout = DISASSEM_DATA_COMMAND;
157	}
158      else
159	new_layout = layout_type;
160
161      regs_populate = (new_layout == SRC_DATA_COMMAND ||
162		      new_layout == DISASSEM_DATA_COMMAND ||
163		      regs_display_type != TUI_UNDEFINED_REGS);
164      if (new_layout != cur_layout || regs_display_type != TUI_UNDEFINED_REGS)
165	{
166	  if (new_layout != cur_layout)
167	    {
168	      show_layout (new_layout);
169	      /*
170	         ** Now determine where focus should be
171	       */
172	      if (win_with_focus != TUI_CMD_WIN)
173		{
174		  switch (new_layout)
175		    {
176		    case SRC_COMMAND:
177		      tui_set_win_focus_to (TUI_SRC_WIN);
178		      layout_def->display_mode = SRC_WIN;
179		      layout_def->split = FALSE;
180		      break;
181		    case DISASSEM_COMMAND:
182		      /* the previous layout was not showing
183		         ** code. this can happen if there is no
184		         ** source available:
185		         ** 1. if the source file is in another dir OR
186		         ** 2. if target was compiled without -g
187		         ** We still want to show the assembly though!
188		       */
189		      addr = tui_get_begin_asm_address ();
190		      tui_set_win_focus_to (TUI_DISASM_WIN);
191		      layout_def->display_mode = DISASSEM_WIN;
192		      layout_def->split = FALSE;
193		      break;
194		    case SRC_DISASSEM_COMMAND:
195		      /* the previous layout was not showing
196		         ** code. this can happen if there is no
197		         ** source available:
198		         ** 1. if the source file is in another dir OR
199		         ** 2. if target was compiled without -g
200		         ** We still want to show the assembly though!
201		       */
202		      addr = tui_get_begin_asm_address ();
203		      if (win_with_focus == TUI_SRC_WIN)
204			tui_set_win_focus_to (TUI_SRC_WIN);
205		      else
206			tui_set_win_focus_to (TUI_DISASM_WIN);
207		      layout_def->split = TRUE;
208		      break;
209		    case SRC_DATA_COMMAND:
210		      if (win_with_focus != TUI_DATA_WIN)
211			tui_set_win_focus_to (TUI_SRC_WIN);
212		      else
213			tui_set_win_focus_to (TUI_DATA_WIN);
214		      layout_def->display_mode = SRC_WIN;
215		      layout_def->split = FALSE;
216		      break;
217		    case DISASSEM_DATA_COMMAND:
218		      /* the previous layout was not showing
219		         ** code. this can happen if there is no
220		         ** source available:
221		         ** 1. if the source file is in another dir OR
222		         ** 2. if target was compiled without -g
223		         ** We still want to show the assembly though!
224		       */
225		      addr = tui_get_begin_asm_address ();
226		      if (win_with_focus != TUI_DATA_WIN)
227			tui_set_win_focus_to (TUI_DISASM_WIN);
228		      else
229			tui_set_win_focus_to (TUI_DATA_WIN);
230		      layout_def->display_mode = DISASSEM_WIN;
231		      layout_def->split = FALSE;
232		      break;
233		    default:
234		      break;
235		    }
236		}
237	      if (new_win_with_focus != (struct tui_win_info *) NULL)
238		tui_set_win_focus_to (new_win_with_focus);
239	      /*
240	         ** Now update the window content
241	       */
242	      if (!regs_populate &&
243		  (new_layout == SRC_DATA_COMMAND ||
244		   new_layout == DISASSEM_DATA_COMMAND))
245		tui_display_all_data ();
246
247	      tui_update_source_windows_with_addr (addr);
248	    }
249	  if (regs_populate)
250	    {
251              tui_show_registers (TUI_DATA_WIN->detail.data_display_info.current_group);
252	    }
253	}
254    }
255  else
256    status = TUI_FAILURE;
257
258  return status;
259}
260
261/* Add the specified window to the layout in a logical way.  This
262   means setting up the most logical layout given the window to be
263   added.  */
264void
265tui_add_win_to_layout (enum tui_win_type type)
266{
267  enum tui_layout_type cur_layout = tui_current_layout ();
268
269  switch (type)
270    {
271    case SRC_WIN:
272      if (cur_layout != SRC_COMMAND &&
273	  cur_layout != SRC_DISASSEM_COMMAND &&
274	  cur_layout != SRC_DATA_COMMAND)
275	{
276	  tui_clear_source_windows_detail ();
277	  if (cur_layout == DISASSEM_DATA_COMMAND)
278	    show_layout (SRC_DATA_COMMAND);
279	  else
280	    show_layout (SRC_COMMAND);
281	}
282      break;
283    case DISASSEM_WIN:
284      if (cur_layout != DISASSEM_COMMAND &&
285	  cur_layout != SRC_DISASSEM_COMMAND &&
286	  cur_layout != DISASSEM_DATA_COMMAND)
287	{
288	  tui_clear_source_windows_detail ();
289	  if (cur_layout == SRC_DATA_COMMAND)
290	    show_layout (DISASSEM_DATA_COMMAND);
291	  else
292	    show_layout (DISASSEM_COMMAND);
293	}
294      break;
295    case DATA_WIN:
296      if (cur_layout != SRC_DATA_COMMAND &&
297	  cur_layout != DISASSEM_DATA_COMMAND)
298	{
299	  if (cur_layout == DISASSEM_COMMAND)
300	    show_layout (DISASSEM_DATA_COMMAND);
301	  else
302	    show_layout (SRC_DATA_COMMAND);
303	}
304      break;
305    default:
306      break;
307    }
308}
309
310
311/* Answer the height of a window.  If it hasn't been created yet,
312   answer what the height of a window would be based upon its type and
313   the layout.  */
314int
315tui_default_win_height (enum tui_win_type type, enum tui_layout_type layout)
316{
317  int h;
318
319  if (tui_win_list[type] != (struct tui_win_info *) NULL)
320    h = tui_win_list[type]->generic.height;
321  else
322    {
323      switch (layout)
324	{
325	case SRC_COMMAND:
326	case DISASSEM_COMMAND:
327	  if (TUI_CMD_WIN == NULL)
328	    h = tui_term_height () / 2;
329	  else
330	    h = tui_term_height () - TUI_CMD_WIN->generic.height;
331	  break;
332	case SRC_DISASSEM_COMMAND:
333	case SRC_DATA_COMMAND:
334	case DISASSEM_DATA_COMMAND:
335	  if (TUI_CMD_WIN == NULL)
336	    h = tui_term_height () / 3;
337	  else
338	    h = (tui_term_height () - TUI_CMD_WIN->generic.height) / 2;
339	  break;
340	default:
341	  h = 0;
342	  break;
343	}
344    }
345
346  return h;
347}
348
349
350/* Answer the height of a window.  If it hasn't been created yet,
351   answer what the height of a window would be based upon its type and
352   the layout.  */
353int
354tui_default_win_viewport_height (enum tui_win_type type,
355				 enum tui_layout_type layout)
356{
357  int h;
358
359  h = tui_default_win_height (type, layout);
360
361  if (tui_win_list[type] == TUI_CMD_WIN)
362    h -= 1;
363  else
364    h -= 2;
365
366  return h;
367}
368
369
370/* Function to initialize gdb commands, for tui window layout
371   manipulation.  */
372void
373_initialize_tui_layout (void)
374{
375  add_com ("layout", class_tui, tui_layout_command,
376           "Change the layout of windows.\n\
377Usage: layout prev | next | <layout_name> \n\
378Layout names are:\n\
379   src   : Displays source and command windows.\n\
380   asm   : Displays disassembly and command windows.\n\
381   split : Displays source, disassembly and command windows.\n\
382   regs  : Displays register window. If existing layout\n\
383           is source/command or assembly/command, the \n\
384           register window is displayed. If the\n\
385           source/assembly/command (split) is displayed, \n\
386           the register window is displayed with \n\
387           the window that has current logical focus.\n");
388  if (xdb_commands)
389    {
390      add_com ("td", class_tui, tui_toggle_layout_command,
391               "Toggle between Source/Command and Disassembly/Command layouts.\n");
392      add_com ("ts", class_tui, tui_toggle_split_layout_command,
393               "Toggle between Source/Command or Disassembly/Command and \n\
394Source/Disassembly/Command layouts.\n");
395    }
396}
397
398
399/*************************
400** STATIC LOCAL FUNCTIONS
401**************************/
402
403
404/* Function to set the layout to SRC, ASM, SPLIT, NEXT, PREV, DATA,
405   REGS, $REGS, $GREGS, $FREGS, $SREGS.  */
406enum tui_status
407tui_set_layout_for_display_command (const char *layout_name)
408{
409  enum tui_status status = TUI_SUCCESS;
410
411  if (layout_name != (char *) NULL)
412    {
413      int i;
414      char *buf_ptr;
415      enum tui_layout_type new_layout = UNDEFINED_LAYOUT;
416      enum tui_register_display_type dpy_type = TUI_UNDEFINED_REGS;
417      enum tui_layout_type cur_layout = tui_current_layout ();
418
419      buf_ptr = (char *) xstrdup (layout_name);
420      for (i = 0; (i < strlen (layout_name)); i++)
421	buf_ptr[i] = toupper (buf_ptr[i]);
422
423      /* First check for ambiguous input */
424      if (strlen (buf_ptr) <= 1 && (*buf_ptr == 'S' || *buf_ptr == '$'))
425	{
426	  warning ("Ambiguous command input.\n");
427	  status = TUI_FAILURE;
428	}
429      else
430	{
431	  if (subset_compare (buf_ptr, "SRC"))
432	    new_layout = SRC_COMMAND;
433	  else if (subset_compare (buf_ptr, "ASM"))
434	    new_layout = DISASSEM_COMMAND;
435	  else if (subset_compare (buf_ptr, "SPLIT"))
436	    new_layout = SRC_DISASSEM_COMMAND;
437	  else if (subset_compare (buf_ptr, "REGS") ||
438		   subset_compare (buf_ptr, TUI_GENERAL_SPECIAL_REGS_NAME) ||
439		   subset_compare (buf_ptr, TUI_GENERAL_REGS_NAME) ||
440		   subset_compare (buf_ptr, TUI_FLOAT_REGS_NAME) ||
441		   subset_compare (buf_ptr, TUI_SPECIAL_REGS_NAME))
442	    {
443	      if (cur_layout == SRC_COMMAND || cur_layout == SRC_DATA_COMMAND)
444		new_layout = SRC_DATA_COMMAND;
445	      else
446		new_layout = DISASSEM_DATA_COMMAND;
447
448/* could ifdef out the following code. when compile with -z, there are null
449   pointer references that cause a core dump if 'layout regs' is the first
450   layout command issued by the user. HP has asked us to hook up this code
451   - edie epstein
452 */
453	      if (subset_compare (buf_ptr, TUI_FLOAT_REGS_NAME))
454		{
455		  if (TUI_DATA_WIN->detail.data_display_info.regs_display_type !=
456		      TUI_SFLOAT_REGS &&
457		      TUI_DATA_WIN->detail.data_display_info.regs_display_type !=
458		      TUI_DFLOAT_REGS)
459		    dpy_type = TUI_SFLOAT_REGS;
460		  else
461		    dpy_type =
462		      TUI_DATA_WIN->detail.data_display_info.regs_display_type;
463		}
464	      else if (subset_compare (buf_ptr,
465				      TUI_GENERAL_SPECIAL_REGS_NAME))
466		dpy_type = TUI_GENERAL_AND_SPECIAL_REGS;
467	      else if (subset_compare (buf_ptr, TUI_GENERAL_REGS_NAME))
468		dpy_type = TUI_GENERAL_REGS;
469	      else if (subset_compare (buf_ptr, TUI_SPECIAL_REGS_NAME))
470		dpy_type = TUI_SPECIAL_REGS;
471	      else if (TUI_DATA_WIN)
472		{
473		  if (TUI_DATA_WIN->detail.data_display_info.regs_display_type !=
474		      TUI_UNDEFINED_REGS)
475		    dpy_type =
476		      TUI_DATA_WIN->detail.data_display_info.regs_display_type;
477		  else
478		    dpy_type = TUI_GENERAL_REGS;
479		}
480
481/* end of potential ifdef
482 */
483
484/* if ifdefed out code above, then assume that the user wishes to display the
485   general purpose registers
486 */
487
488/*              dpy_type = TUI_GENERAL_REGS;
489 */
490	    }
491	  else if (subset_compare (buf_ptr, "NEXT"))
492	    new_layout = next_layout ();
493	  else if (subset_compare (buf_ptr, "PREV"))
494	    new_layout = prev_layout ();
495	  else
496	    status = TUI_FAILURE;
497	  xfree (buf_ptr);
498
499	  tui_set_layout (new_layout, dpy_type);
500	}
501    }
502  else
503    status = TUI_FAILURE;
504
505  return status;
506}
507
508
509static CORE_ADDR
510extract_display_start_addr (void)
511{
512  enum tui_layout_type cur_layout = tui_current_layout ();
513  CORE_ADDR addr;
514  CORE_ADDR pc;
515  struct symtab_and_line cursal = get_current_source_symtab_and_line ();
516
517  switch (cur_layout)
518    {
519    case SRC_COMMAND:
520    case SRC_DATA_COMMAND:
521      find_line_pc (cursal.symtab,
522		    TUI_SRC_WIN->detail.source_info.start_line_or_addr.line_no,
523		    &pc);
524      addr = pc;
525      break;
526    case DISASSEM_COMMAND:
527    case SRC_DISASSEM_COMMAND:
528    case DISASSEM_DATA_COMMAND:
529      addr = TUI_DISASM_WIN->detail.source_info.start_line_or_addr.addr;
530      break;
531    default:
532      addr = 0;
533      break;
534    }
535
536  return addr;
537}
538
539
540static void
541tui_handle_xdb_layout (struct tui_layout_def * layout_def)
542{
543  if (layout_def->split)
544    {
545      tui_set_layout (SRC_DISASSEM_COMMAND, TUI_UNDEFINED_REGS);
546      tui_set_win_focus_to (tui_win_list[layout_def->display_mode]);
547    }
548  else
549    {
550      if (layout_def->display_mode == SRC_WIN)
551	tui_set_layout (SRC_COMMAND, TUI_UNDEFINED_REGS);
552      else
553	tui_set_layout (DISASSEM_DATA_COMMAND, layout_def->regs_display_type);
554    }
555}
556
557
558static void
559tui_toggle_layout_command (char *arg, int from_tty)
560{
561  struct tui_layout_def * layout_def = tui_layout_def ();
562
563  /* Make sure the curses mode is enabled.  */
564  tui_enable ();
565  if (layout_def->display_mode == SRC_WIN)
566    layout_def->display_mode = DISASSEM_WIN;
567  else
568    layout_def->display_mode = SRC_WIN;
569
570  if (!layout_def->split)
571    tui_handle_xdb_layout (layout_def);
572}
573
574
575static void
576tui_toggle_split_layout_command (char *arg, int from_tty)
577{
578  struct tui_layout_def * layout_def = tui_layout_def ();
579
580  /* Make sure the curses mode is enabled.  */
581  tui_enable ();
582  layout_def->split = (!layout_def->split);
583  tui_handle_xdb_layout (layout_def);
584}
585
586
587static void
588tui_layout_command (char *arg, int from_tty)
589{
590  /* Make sure the curses mode is enabled.  */
591  tui_enable ();
592
593  /* Switch to the selected layout.  */
594  if (tui_set_layout_for_display_command (arg) != TUI_SUCCESS)
595    warning ("Invalid layout specified.\n%s", LAYOUT_USAGE);
596
597}
598
599/* Answer the previous layout to cycle to.  */
600static enum tui_layout_type
601next_layout (void)
602{
603  enum tui_layout_type new_layout;
604
605  new_layout = tui_current_layout ();
606  if (new_layout == UNDEFINED_LAYOUT)
607    new_layout = SRC_COMMAND;
608  else
609    {
610      new_layout++;
611      if (new_layout == UNDEFINED_LAYOUT)
612	new_layout = SRC_COMMAND;
613    }
614
615  return new_layout;
616}
617
618
619/* Answer the next layout to cycle to.  */
620static enum tui_layout_type
621prev_layout (void)
622{
623  enum tui_layout_type new_layout;
624
625  new_layout = tui_current_layout ();
626  if (new_layout == SRC_COMMAND)
627    new_layout = DISASSEM_DATA_COMMAND;
628  else
629    {
630      new_layout--;
631      if (new_layout == UNDEFINED_LAYOUT)
632	new_layout = DISASSEM_DATA_COMMAND;
633    }
634
635  return new_layout;
636}
637
638
639
640static void
641make_command_window (struct tui_win_info * * win_info_ptr, int height, int origin_y)
642{
643  init_and_make_win ((void **) win_info_ptr,
644		   CMD_WIN,
645		   height,
646		   tui_term_width (),
647		   0,
648		   origin_y,
649		   DONT_BOX_WINDOW);
650
651  (*win_info_ptr)->can_highlight = FALSE;
652}
653
654
655/*
656   ** make_source_window().
657 */
658static void
659make_source_window (struct tui_win_info * * win_info_ptr, int height, int origin_y)
660{
661  make_source_or_disasm_window (win_info_ptr, SRC_WIN, height, origin_y);
662
663  return;
664}				/* make_source_window */
665
666
667/*
668   ** make_disasm_window().
669 */
670static void
671make_disasm_window (struct tui_win_info * * win_info_ptr, int height, int origin_y)
672{
673  make_source_or_disasm_window (win_info_ptr, DISASSEM_WIN, height, origin_y);
674
675  return;
676}				/* make_disasm_window */
677
678
679static void
680make_data_window (struct tui_win_info * * win_info_ptr, int height, int origin_y)
681{
682  init_and_make_win ((void **) win_info_ptr,
683		   DATA_WIN,
684		   height,
685		   tui_term_width (),
686		   0,
687		   origin_y,
688		   BOX_WINDOW);
689}
690
691
692
693/* Show the Source/Command layout.  */
694static void
695show_source_command (void)
696{
697  show_source_or_disasm_and_command (SRC_COMMAND);
698}
699
700
701/* Show the Dissassem/Command layout.  */
702static void
703show_disasm_command (void)
704{
705  show_source_or_disasm_and_command (DISASSEM_COMMAND);
706}
707
708
709/* Show the Source/Disassem/Command layout.  */
710static void
711show_source_disasm_command (void)
712{
713  if (tui_current_layout () != SRC_DISASSEM_COMMAND)
714    {
715      int cmd_height, src_height, asm_height;
716
717      if (TUI_CMD_WIN != NULL)
718	cmd_height = TUI_CMD_WIN->generic.height;
719      else
720	cmd_height = tui_term_height () / 3;
721
722      src_height = (tui_term_height () - cmd_height) / 2;
723      asm_height = tui_term_height () - (src_height + cmd_height);
724
725      if (TUI_SRC_WIN == NULL)
726	make_source_window (&TUI_SRC_WIN, src_height, 0);
727      else
728	{
729	  init_gen_win_info (&TUI_SRC_WIN->generic,
730			   TUI_SRC_WIN->generic.type,
731			   src_height,
732			   TUI_SRC_WIN->generic.width,
733			   TUI_SRC_WIN->detail.source_info.execution_info->width,
734			   0);
735	  TUI_SRC_WIN->can_highlight = TRUE;
736	  init_gen_win_info (TUI_SRC_WIN->detail.source_info.execution_info,
737			   EXEC_INFO_WIN,
738			   src_height,
739			   3,
740			   0,
741			   0);
742	  tui_make_visible (&TUI_SRC_WIN->generic);
743	  tui_make_visible (TUI_SRC_WIN->detail.source_info.execution_info);
744	  TUI_SRC_WIN->detail.source_info.has_locator = FALSE;;
745	}
746      if (TUI_SRC_WIN != NULL)
747	{
748	  struct tui_gen_win_info * locator = tui_locator_win_info_ptr ();
749
750	  tui_show_source_content (TUI_SRC_WIN);
751	  if (TUI_DISASM_WIN == NULL)
752	    {
753	      make_disasm_window (&TUI_DISASM_WIN, asm_height, src_height - 1);
754	      init_and_make_win ((void **) & locator,
755			       LOCATOR_WIN,
756			       2 /* 1 */ ,
757			       tui_term_width (),
758			       0,
759			       (src_height + asm_height) - 1,
760			       DONT_BOX_WINDOW);
761	    }
762	  else
763	    {
764	      init_gen_win_info (locator,
765			       LOCATOR_WIN,
766			       2 /* 1 */ ,
767			       tui_term_width (),
768			       0,
769			       (src_height + asm_height) - 1);
770	      TUI_DISASM_WIN->detail.source_info.has_locator = TRUE;
771	      init_gen_win_info (
772				&TUI_DISASM_WIN->generic,
773				TUI_DISASM_WIN->generic.type,
774				asm_height,
775				TUI_DISASM_WIN->generic.width,
776			TUI_DISASM_WIN->detail.source_info.execution_info->width,
777				src_height - 1);
778	      init_gen_win_info (TUI_DISASM_WIN->detail.source_info.execution_info,
779			       EXEC_INFO_WIN,
780			       asm_height,
781			       3,
782			       0,
783			       src_height - 1);
784	      TUI_DISASM_WIN->can_highlight = TRUE;
785	      tui_make_visible (&TUI_DISASM_WIN->generic);
786	      tui_make_visible (TUI_DISASM_WIN->detail.source_info.execution_info);
787	    }
788	  if (TUI_DISASM_WIN != NULL)
789	    {
790	      TUI_SRC_WIN->detail.source_info.has_locator = FALSE;
791	      TUI_DISASM_WIN->detail.source_info.has_locator = TRUE;
792	      tui_make_visible (locator);
793	      tui_show_locator_content ();
794	      tui_show_source_content (TUI_DISASM_WIN);
795
796	      if (TUI_CMD_WIN == NULL)
797		make_command_window (&TUI_CMD_WIN,
798				    cmd_height,
799				    tui_term_height () - cmd_height);
800	      else
801		{
802		  init_gen_win_info (&TUI_CMD_WIN->generic,
803				   TUI_CMD_WIN->generic.type,
804				   TUI_CMD_WIN->generic.height,
805				   TUI_CMD_WIN->generic.width,
806				   0,
807				   TUI_CMD_WIN->generic.origin.y);
808		  TUI_CMD_WIN->can_highlight = FALSE;
809		  tui_make_visible (&TUI_CMD_WIN->generic);
810		}
811	      if (TUI_CMD_WIN != NULL)
812		tui_refresh_win (&TUI_CMD_WIN->generic);
813	    }
814	}
815      tui_set_current_layout_to (SRC_DISASSEM_COMMAND);
816    }
817}
818
819
820/* Show the Source/Data/Command or the Dissassembly/Data/Command
821   layout.  */
822static void
823show_data (enum tui_layout_type new_layout)
824{
825  int total_height = (tui_term_height () - TUI_CMD_WIN->generic.height);
826  int src_height, data_height;
827  enum tui_win_type win_type;
828  struct tui_gen_win_info * locator = tui_locator_win_info_ptr ();
829
830
831  data_height = total_height / 2;
832  src_height = total_height - data_height;
833  tui_make_all_invisible ();
834  tui_make_invisible (locator);
835  make_data_window (&TUI_DATA_WIN, data_height, 0);
836  TUI_DATA_WIN->can_highlight = TRUE;
837  if (new_layout == SRC_DATA_COMMAND)
838    win_type = SRC_WIN;
839  else
840    win_type = DISASSEM_WIN;
841  if (tui_win_list[win_type] == NULL)
842    {
843      if (win_type == SRC_WIN)
844	make_source_window (&tui_win_list[win_type], src_height, data_height - 1);
845      else
846	make_disasm_window (&tui_win_list[win_type], src_height, data_height - 1);
847      init_and_make_win ((void **) & locator,
848		       LOCATOR_WIN,
849		       2 /* 1 */ ,
850		       tui_term_width (),
851		       0,
852		       total_height - 1,
853		       DONT_BOX_WINDOW);
854    }
855  else
856    {
857      init_gen_win_info (&tui_win_list[win_type]->generic,
858		       tui_win_list[win_type]->generic.type,
859		       src_height,
860		       tui_win_list[win_type]->generic.width,
861		   tui_win_list[win_type]->detail.source_info.execution_info->width,
862		       data_height - 1);
863      init_gen_win_info (tui_win_list[win_type]->detail.source_info.execution_info,
864		       EXEC_INFO_WIN,
865		       src_height,
866		       3,
867		       0,
868		       data_height - 1);
869      tui_make_visible (&tui_win_list[win_type]->generic);
870      tui_make_visible (tui_win_list[win_type]->detail.source_info.execution_info);
871      init_gen_win_info (locator,
872		       LOCATOR_WIN,
873		       2 /* 1 */ ,
874		       tui_term_width (),
875		       0,
876		       total_height - 1);
877    }
878  tui_win_list[win_type]->detail.source_info.has_locator = TRUE;
879  tui_make_visible (locator);
880  tui_show_locator_content ();
881  tui_add_to_source_windows (tui_win_list[win_type]);
882  tui_set_current_layout_to (new_layout);
883}
884
885/*
886   ** init_gen_win_info().
887 */
888static void
889init_gen_win_info (struct tui_gen_win_info * win_info, enum tui_win_type type,
890                 int height, int width, int origin_x, int origin_y)
891{
892  int h = height;
893
894  win_info->type = type;
895  win_info->width = width;
896  win_info->height = h;
897  if (h > 1)
898    {
899      win_info->viewport_height = h - 1;
900      if (win_info->type != CMD_WIN)
901	win_info->viewport_height--;
902    }
903  else
904    win_info->viewport_height = 1;
905  win_info->origin.x = origin_x;
906  win_info->origin.y = origin_y;
907
908  return;
909}				/* init_gen_win_info */
910
911/*
912   ** init_and_make_win().
913 */
914static void
915init_and_make_win (void ** win_info_ptr, enum tui_win_type win_type,
916                 int height, int width, int origin_x, int origin_y, int box_it)
917{
918  void *opaque_win_info = *win_info_ptr;
919  struct tui_gen_win_info * generic;
920
921  if (opaque_win_info == NULL)
922    {
923      if (tui_win_is_auxillary (win_type))
924	opaque_win_info = (void *) tui_alloc_generic_win_info ();
925      else
926	opaque_win_info = (void *) tui_alloc_win_info (win_type);
927    }
928  if (tui_win_is_auxillary (win_type))
929    generic = (struct tui_gen_win_info *) opaque_win_info;
930  else
931    generic = &((struct tui_win_info *) opaque_win_info)->generic;
932
933  if (opaque_win_info != NULL)
934    {
935      init_gen_win_info (generic, win_type, height, width, origin_x, origin_y);
936      if (!tui_win_is_auxillary (win_type))
937	{
938	  if (generic->type == CMD_WIN)
939	    ((struct tui_win_info *) opaque_win_info)->can_highlight = FALSE;
940	  else
941	    ((struct tui_win_info *) opaque_win_info)->can_highlight = TRUE;
942	}
943      tui_make_window (generic, box_it);
944    }
945  *win_info_ptr = opaque_win_info;
946}
947
948
949static void
950make_source_or_disasm_window (struct tui_win_info * * win_info_ptr, enum tui_win_type type,
951                             int height, int origin_y)
952{
953  struct tui_gen_win_info * execution_info = (struct tui_gen_win_info *) NULL;
954
955  /*
956     ** Create the exeuction info window.
957   */
958  if (type == SRC_WIN)
959    execution_info = tui_source_exec_info_win_ptr ();
960  else
961    execution_info = tui_disassem_exec_info_win_ptr ();
962  init_and_make_win ((void **) & execution_info,
963		   EXEC_INFO_WIN,
964		   height,
965		   3,
966		   0,
967		   origin_y,
968		   DONT_BOX_WINDOW);
969  /*
970     ** Now create the source window.
971   */
972  init_and_make_win ((void **) win_info_ptr,
973		   type,
974		   height,
975		   tui_term_width () - execution_info->width,
976		   execution_info->width,
977		   origin_y,
978		   BOX_WINDOW);
979
980  (*win_info_ptr)->detail.source_info.execution_info = execution_info;
981}
982
983
984/* Show the Source/Command or the Disassem layout.   */
985static void
986show_source_or_disasm_and_command (enum tui_layout_type layout_type)
987{
988  if (tui_current_layout () != layout_type)
989    {
990      struct tui_win_info * *win_info_ptr;
991      int src_height, cmd_height;
992      struct tui_gen_win_info * locator = tui_locator_win_info_ptr ();
993
994      if (TUI_CMD_WIN != NULL)
995	cmd_height = TUI_CMD_WIN->generic.height;
996      else
997	cmd_height = tui_term_height () / 3;
998      src_height = tui_term_height () - cmd_height;
999
1000
1001      if (layout_type == SRC_COMMAND)
1002	win_info_ptr = &TUI_SRC_WIN;
1003      else
1004	win_info_ptr = &TUI_DISASM_WIN;
1005
1006      if ((*win_info_ptr) == NULL)
1007	{
1008	  if (layout_type == SRC_COMMAND)
1009	    make_source_window (win_info_ptr, src_height - 1, 0);
1010	  else
1011	    make_disasm_window (win_info_ptr, src_height - 1, 0);
1012	  init_and_make_win ((void **) & locator,
1013			   LOCATOR_WIN,
1014			   2 /* 1 */ ,
1015			   tui_term_width (),
1016			   0,
1017			   src_height - 1,
1018			   DONT_BOX_WINDOW);
1019	}
1020      else
1021	{
1022	  init_gen_win_info (locator,
1023			   LOCATOR_WIN,
1024			   2 /* 1 */ ,
1025			   tui_term_width (),
1026			   0,
1027			   src_height - 1);
1028	  (*win_info_ptr)->detail.source_info.has_locator = TRUE;
1029	  init_gen_win_info (
1030			    &(*win_info_ptr)->generic,
1031			    (*win_info_ptr)->generic.type,
1032			    src_height - 1,
1033			    (*win_info_ptr)->generic.width,
1034		      (*win_info_ptr)->detail.source_info.execution_info->width,
1035			    0);
1036	  init_gen_win_info ((*win_info_ptr)->detail.source_info.execution_info,
1037			   EXEC_INFO_WIN,
1038			   src_height - 1,
1039			   3,
1040			   0,
1041			   0);
1042	  (*win_info_ptr)->can_highlight = TRUE;
1043	  tui_make_visible (&(*win_info_ptr)->generic);
1044	  tui_make_visible ((*win_info_ptr)->detail.source_info.execution_info);
1045	}
1046      if ((*win_info_ptr) != NULL)
1047	{
1048	  (*win_info_ptr)->detail.source_info.has_locator = TRUE;
1049	  tui_make_visible (locator);
1050	  tui_show_locator_content ();
1051	  tui_show_source_content (*win_info_ptr);
1052
1053	  if (TUI_CMD_WIN == NULL)
1054	    {
1055	      make_command_window (&TUI_CMD_WIN, cmd_height, src_height);
1056	      tui_refresh_win (&TUI_CMD_WIN->generic);
1057	    }
1058	  else
1059	    {
1060	      init_gen_win_info (&TUI_CMD_WIN->generic,
1061			       TUI_CMD_WIN->generic.type,
1062			       TUI_CMD_WIN->generic.height,
1063			       TUI_CMD_WIN->generic.width,
1064			       TUI_CMD_WIN->generic.origin.x,
1065			       TUI_CMD_WIN->generic.origin.y);
1066	      TUI_CMD_WIN->can_highlight = FALSE;
1067	      tui_make_visible (&TUI_CMD_WIN->generic);
1068	    }
1069	}
1070      tui_set_current_layout_to (layout_type);
1071    }
1072}
1073