gdb/tui/tui-wingeneral.c

   1 /* General window behavior.
   2
   3    Copyright (C) 1998-2019 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 "tui/tui.h"
  24 #include "tui/tui-data.h"
  25 #include "tui/tui-wingeneral.h"
  26 #include "tui/tui-win.h"
  27 #include "tui/tui-stack.h"
  28
  29 #include "gdb_curses.h"
  30
  31 /* See tui-data.h.  */
  32
  33 void
  34 tui_gen_win_info::refresh_window ()
  35 {
  36   if (handle != NULL)
  37     wrefresh (handle);
  38 }
  39
  40 /* Function to delete the curses window, checking for NULL.  */
  41 void
  42 tui_delete_win (WINDOW *window)
  43 {
  44   if (window != NULL)
  45     delwin (window);
  46 }
  47
  48
  49 /* Draw a border arround the window.  */
  50 static void
  51 box_win (struct tui_win_info *win_info,
  52          bool highlight_flag)
  53 {
  54   WINDOW *win;
  55   int attrs;
  56
  57   win = win_info->handle;
  58   if (highlight_flag)
  59     attrs = tui_active_border_attrs;
  60   else
  61     attrs = tui_border_attrs;
  62
  63   wattron (win, attrs);
  64 #ifdef HAVE_WBORDER
  65   wborder (win, tui_border_vline, tui_border_vline,
  66            tui_border_hline, tui_border_hline,
  67            tui_border_ulcorner, tui_border_urcorner,
  68            tui_border_llcorner, tui_border_lrcorner);
  69 #else
  70   box (win, tui_border_vline, tui_border_hline);
  71 #endif
  72   if (!win_info->title.empty ())
  73     {
  74       /* Emit "+-TITLE-+" -- so 2 characters on the right and 2 on
  75          the left.  */
  76       int max_len = win_info->width - 2 - 2;
  77
  78       if (win_info->title.size () <= max_len)
  79         mvwaddstr (win, 0, 3, win_info->title.c_str ());
  80       else
  81         {
  82           std::string truncated
  83             = "..." + win_info->title.substr (win_info->title.size ()
  84                                               - max_len + 3);
  85           mvwaddstr (win, 0, 3, truncated.c_str ());
  86         }
  87     }
  88   wattroff (win, attrs);
  89 }
  90
  91
  92 void
  93 tui_unhighlight_win (struct tui_win_info *win_info)
  94 {
  95   if (win_info != NULL
  96       && win_info->can_highlight
  97       && win_info->handle != NULL)
  98     {
  99       box_win (win_info, false);
 100       win_info->refresh_window ();
 101       win_info->set_highlight (false);
 102     }
 103 }
 104
 105
 106 void
 107 tui_highlight_win (struct tui_win_info *win_info)
 108 {
 109   if (win_info != NULL
 110       && win_info->can_highlight
 111       && win_info->handle != NULL)
 112     {
 113       box_win (win_info, true);
 114       win_info->refresh_window ();
 115       win_info->set_highlight (true);
 116     }
 117 }
 118
 119 void
 120 tui_win_info::check_and_display_highlight_if_needed ()
 121 {
 122   if (can_highlight)
 123     {
 124       if (is_highlighted)
 125         tui_highlight_win (this);
 126       else
 127         tui_unhighlight_win (this);
 128     }
 129 }
 130
 131
 132 void
 133 tui_gen_win_info::make_window ()
 134 {
 135   handle = newwin (height, width, origin.y, origin.x);
 136   if (handle != NULL)
 137     scrollok (handle, TRUE);
 138 }
 139
 140 void
 141 tui_win_info::make_window ()
 142 {
 143   tui_gen_win_info::make_window ();
 144   if (handle != NULL && can_box ())
 145     box_win (this, false);
 146 }
 147
 148 /* We can't really make windows visible, or invisible.  So we have to
 149    delete the entire window when making it visible, and create it
 150    again when making it visible.  */
 151 void
 152 tui_gen_win_info::make_visible (bool visible)
 153 {
 154   if (is_visible () == visible)
 155     return;
 156
 157   if (visible)
 158     make_window ();
 159   else
 160     {
 161       tui_delete_win (handle);
 162       handle = NULL;
 163     }
 164 }
 165
 166 /* See tui-wingeneral.h.  */
 167
 168 void
 169 tui_make_all_invisible (void)
 170 {
 171   for (tui_win_info *win_info : all_tui_windows ())
 172     win_info->make_visible (false);
 173 }
 174
 175 /* Function to refresh all the windows currently displayed.  */
 176
 177 void
 178 tui_refresh_all ()
 179 {
 180   struct tui_locator_window *locator = tui_locator_win_info_ptr ();
 181
 182   for (tui_win_info *win_info : all_tui_windows ())
 183     {
 184       if (win_info->is_visible ())
 185         win_info->refresh_window ();
 186     }
 187   if (locator->is_visible ())
 188     locator->refresh_window ();
 189 }