gdb/tui/tui-data.c

   1 /* TUI data manipulation routines.
   2
   3    Copyright (C) 1998-2022 Free Software Foundation, Inc.
   4
   5    Contributed by Hewlett-Packard Company.
   6
   7    This file is part of GDB.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  21
  22 #include "defs.h"
  23 #include "symtab.h"
  24 #include "tui/tui.h"
  25 #include "tui/tui-data.h"
  26 #include "tui/tui-win.h"
  27 #include "tui/tui-wingeneral.h"
  28 #include "tui/tui-winsource.h"
  29 #include "gdb_curses.h"
  30 #include <algorithm>
  31
  32 struct tui_win_info *tui_win_list[MAX_MAJOR_WINDOWS];
  33
  34 static int term_height, term_width;
  35 static struct tui_win_info *win_with_focus = NULL;
  36
  37 static bool win_resized = false;
  38
  39 /* Answer a whether the terminal window has been resized or not.  */
  40 bool
  41 tui_win_resized ()
  42 {
  43   return win_resized;
  44 }
  45
  46
  47 /* Set a whether the terminal window has been resized or not.  */
  48 void
  49 tui_set_win_resized_to (bool resized)
  50 {
  51   win_resized = resized;
  52 }
  53
  54
  55 /* Answer the window with the logical focus.  */
  56 struct tui_win_info *
  57 tui_win_with_focus (void)
  58 {
  59   return win_with_focus;
  60 }
  61
  62
  63 /* Set the logical focus to win_info.  */
  64 void
  65 tui_set_win_focus_to (struct tui_win_info *win_info)
  66 {
  67   if (win_info != NULL)
  68     {
  69       tui_unhighlight_win (win_with_focus);
  70       win_with_focus = win_info;
  71       tui_highlight_win (win_info);
  72     }
  73 }
  74
  75
  76 /* Accessor for the term_height.  */
  77 int
  78 tui_term_height (void)
  79 {
  80   return term_height;
  81 }
  82
  83
  84 /* Mutator for the term height.  */
  85 void
  86 tui_set_term_height_to (int h)
  87 {
  88   term_height = h;
  89 }
  90
  91
  92 /* Accessor for the term_width.  */
  93 int
  94 tui_term_width (void)
  95 {
  96   return term_width;
  97 }
  98
  99
 100 /* Mutator for the term_width.  */
 101 void
 102 tui_set_term_width_to (int w)
 103 {
 104   term_width = w;
 105 }
 106
 107
 108 /* Answer the next window in the list, cycling back to the top if
 109    necessary.  */
 110 struct tui_win_info *
 111 tui_next_win (struct tui_win_info *cur_win)
 112 {
 113   auto iter = std::find (tui_windows.begin (), tui_windows.end (), cur_win);
 114   gdb_assert (iter != tui_windows.end ());
 115
 116   gdb_assert (cur_win->can_focus ());
 117   /* This won't loop forever since we can't have just an un-focusable
 118      window.  */
 119   while (true)
 120     {
 121       ++iter;
 122       if (iter == tui_windows.end ())
 123         iter = tui_windows.begin ();
 124       if ((*iter)->can_focus ())
 125         break;
 126     }
 127
 128   return *iter;
 129 }
 130
 131
 132 /* Answer the prev window in the list, cycling back to the bottom if
 133    necessary.  */
 134 struct tui_win_info *
 135 tui_prev_win (struct tui_win_info *cur_win)
 136 {
 137   auto iter = std::find (tui_windows.rbegin (), tui_windows.rend (), cur_win);
 138   gdb_assert (iter != tui_windows.rend ());
 139
 140   gdb_assert (cur_win->can_focus ());
 141   /* This won't loop forever since we can't have just an un-focusable
 142      window.  */
 143   while (true)
 144     {
 145       ++iter;
 146       if (iter == tui_windows.rend ())
 147         iter = tui_windows.rbegin ();
 148       if ((*iter)->can_focus ())
 149         break;
 150     }
 151
 152   return *iter;
 153 }
 154
 155
 156 void
 157 tui_win_info::rerender ()
 158 {
 159   check_and_display_highlight_if_needed ();
 160 }