gdb/tui/tui-data.c

   1 /* TUI data manipulation routines.
   2
   3    Copyright (C) 1998-2023 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 "tui/tui-stack.h"
  30 #include "gdb_curses.h"
  31 #include <algorithm>
  32
  33 struct tui_win_info *tui_win_list[MAX_MAJOR_WINDOWS];
  34
  35 static int term_height, term_width;
  36 static struct tui_win_info *win_with_focus = NULL;
  37
  38 static bool win_resized = false;
  39
  40 /* Answer a whether the terminal window has been resized or not.  */
  41 bool
  42 tui_win_resized ()
  43 {
  44   return win_resized;
  45 }
  46
  47
  48 /* Set a whether the terminal window has been resized or not.  */
  49 void
  50 tui_set_win_resized_to (bool resized)
  51 {
  52   win_resized = resized;
  53 }
  54
  55
  56 /* Answer the window with the logical focus.  */
  57 struct tui_win_info *
  58 tui_win_with_focus (void)
  59 {
  60   return win_with_focus;
  61 }
  62
  63
  64 /* Set the logical focus to win_info.  */
  65 void
  66 tui_set_win_focus_to (struct tui_win_info *win_info)
  67 {
  68   if (win_info != NULL)
  69     {
  70       tui_unhighlight_win (win_with_focus);
  71       win_with_focus = win_info;
  72       tui_highlight_win (win_info);
  73       tui_show_locator_content ();
  74     }
  75 }
  76
  77
  78 /* Accessor for the term_height.  */
  79 int
  80 tui_term_height (void)
  81 {
  82   return term_height;
  83 }
  84
  85
  86 /* Mutator for the term height.  */
  87 void
  88 tui_set_term_height_to (int h)
  89 {
  90   term_height = h;
  91 }
  92
  93
  94 /* Accessor for the term_width.  */
  95 int
  96 tui_term_width (void)
  97 {
  98   return term_width;
  99 }
 100
 101
 102 /* Mutator for the term_width.  */
 103 void
 104 tui_set_term_width_to (int w)
 105 {
 106   term_width = w;
 107 }
 108
 109
 110 /* Answer the next window in the list, cycling back to the top if
 111    necessary.  */
 112 struct tui_win_info *
 113 tui_next_win (struct tui_win_info *cur_win)
 114 {
 115   auto iter = std::find (tui_windows.begin (), tui_windows.end (), cur_win);
 116   gdb_assert (iter != tui_windows.end ());
 117
 118   gdb_assert (cur_win->can_focus ());
 119   /* This won't loop forever since we can't have just an un-focusable
 120      window.  */
 121   while (true)
 122     {
 123       ++iter;
 124       if (iter == tui_windows.end ())
 125         iter = tui_windows.begin ();
 126       if ((*iter)->can_focus ())
 127         break;
 128     }
 129
 130   return *iter;
 131 }
 132
 133
 134 /* Answer the prev window in the list, cycling back to the bottom if
 135    necessary.  */
 136 struct tui_win_info *
 137 tui_prev_win (struct tui_win_info *cur_win)
 138 {
 139   auto iter = std::find (tui_windows.rbegin (), tui_windows.rend (), cur_win);
 140   gdb_assert (iter != tui_windows.rend ());
 141
 142   gdb_assert (cur_win->can_focus ());
 143   /* This won't loop forever since we can't have just an un-focusable
 144      window.  */
 145   while (true)
 146     {
 147       ++iter;
 148       if (iter == tui_windows.rend ())
 149         iter = tui_windows.rbegin ();
 150       if ((*iter)->can_focus ())
 151         break;
 152     }
 153
 154   return *iter;
 155 }
 156
 157 /* See tui-data.h.  */
 158
 159 void
 160 tui_win_info::set_title (std::string &&new_title)
 161 {
 162   if (m_title != new_title)
 163     {
 164       m_title = new_title;
 165       check_and_display_highlight_if_needed ();
 166     }
 167 }
 168
 169 /* See tui-data.h.  */
 170
 171 void
 172 tui_win_info::display_string (int y, int x, const char *str) const
 173 {
 174   int n = width - box_width () - x;
 175   if (n <= 0)
 176     return;
 177
 178   mvwaddnstr (handle.get (), y, x, str, n);
 179 }
 180
 181 /* See tui-data.h.  */
 182
 183 void
 184 tui_win_info::display_string (const char *str) const
 185 {
 186   int y, x;
 187   getyx (handle.get (), y, x);
 188
 189   /* Avoid Wunused-but-set-variable.  */
 190   (void) y;
 191
 192   int n = width - box_width () - x;
 193   if (n <= 0)
 194     return;
 195
 196   waddnstr (handle.get (), str, n);
 197 }
 198
 199 void
 200 tui_win_info::rerender ()
 201 {
 202   check_and_display_highlight_if_needed ();
 203 }