gdb/tui/tui-wingeneral.c

   1 /* General window behavior.
   2
   3    Copyright (C) 1998-2020 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-io.h"
  26 #include "tui/tui-wingeneral.h"
  27 #include "tui/tui-win.h"
  28 #include "tui/tui-stack.h"
  29 #include "cli/cli-style.h"
  30
  31 #include "gdb_curses.h"
  32
  33 /* See tui-data.h.  */
  34
  35 void
  36 tui_gen_win_info::refresh_window ()
  37 {
  38   if (handle != NULL)
  39     wrefresh (handle.get ());
  40 }
  41
  42 /* Draw a border arround the window.  */
  43 static void
  44 box_win (struct tui_win_info *win_info,
  45          bool highlight_flag)
  46 {
  47   WINDOW *win;
  48   int attrs;
  49
  50   win = win_info->handle.get ();
  51   if (highlight_flag)
  52     attrs = tui_active_border_attrs;
  53   else
  54     attrs = tui_border_attrs;
  55
  56   /* tui_apply_style resets the style entirely, so be sure to call it
  57      before applying ATTRS.  */
  58   tui_apply_style (win, (highlight_flag
  59                          ? tui_active_border_style.style ()
  60                          : tui_border_style.style ()));
  61   wattron (win, attrs);
  62 #ifdef HAVE_WBORDER
  63   wborder (win, tui_border_vline, tui_border_vline,
  64            tui_border_hline, tui_border_hline,
  65            tui_border_ulcorner, tui_border_urcorner,
  66            tui_border_llcorner, tui_border_lrcorner);
  67 #else
  68   box (win, tui_border_vline, tui_border_hline);
  69 #endif
  70   if (!win_info->title.empty ())
  71     {
  72       /* Emit "+-TITLE-+" -- so 2 characters on the right and 2 on
  73          the left.  */
  74       int max_len = win_info->width - 2 - 2;
  75
  76       if (win_info->title.size () <= max_len)
  77         mvwaddstr (win, 0, 3, win_info->title.c_str ());
  78       else
  79         {
  80           std::string truncated
  81             = "..." + win_info->title.substr (win_info->title.size ()
  82                                               - max_len + 3);
  83           mvwaddstr (win, 0, 3, truncated.c_str ());
  84         }
  85     }
  86   wattroff (win, attrs);
  87   tui_apply_style (win, ui_file_style ());
  88 }
  89
  90
  91 void
  92 tui_unhighlight_win (struct tui_win_info *win_info)
  93 {
  94   if (win_info != NULL
  95       && win_info->can_box ()
  96       && win_info->handle != NULL)
  97     {
  98       box_win (win_info, false);
  99       win_info->refresh_window ();
 100       win_info->set_highlight (false);
 101     }
 102 }
 103
 104
 105 void
 106 tui_highlight_win (struct tui_win_info *win_info)
 107 {
 108   if (win_info != NULL
 109       && win_info->can_box ()
 110       && win_info->handle != NULL)
 111     {
 112       box_win (win_info, true);
 113       win_info->refresh_window ();
 114       win_info->set_highlight (true);
 115     }
 116 }
 117
 118 void
 119 tui_win_info::check_and_display_highlight_if_needed ()
 120 {
 121   if (can_box ())
 122     {
 123       if (is_highlighted)
 124         tui_highlight_win (this);
 125       else
 126         tui_unhighlight_win (this);
 127     }
 128 }
 129
 130
 131 void
 132 tui_gen_win_info::make_window ()
 133 {
 134   handle.reset (newwin (height, width, y, x));
 135   if (handle != NULL)
 136     scrollok (handle.get (), TRUE);
 137 }
 138
 139 void
 140 tui_win_info::make_window ()
 141 {
 142   tui_gen_win_info::make_window ();
 143   if (handle != NULL && can_box ())
 144     box_win (this, false);
 145 }
 146
 147 /* We can't really make windows visible, or invisible.  So we have to
 148    delete the entire window when making it visible, and create it
 149    again when making it visible.  */
 150 void
 151 tui_gen_win_info::make_visible (bool visible)
 152 {
 153   if (is_visible () == visible)
 154     return;
 155
 156   if (visible)
 157     make_window ();
 158   else
 159     handle.reset (nullptr);
 160 }
 161
 162 /* See tui-wingeneral.h.  */
 163
 164 void
 165 tui_make_all_invisible (void)
 166 {
 167   for (tui_win_info *win_info : all_tui_windows ())
 168     win_info->make_visible (false);
 169 }
 170
 171 /* Function to refresh all the windows currently displayed.  */
 172
 173 void
 174 tui_refresh_all ()
 175 {
 176   struct tui_locator_window *locator = tui_locator_win_info_ptr ();
 177
 178   for (tui_win_info *win_info : all_tui_windows ())
 179     {
 180       if (win_info->is_visible ())
 181         win_info->refresh_window ();
 182     }
 183   if (locator->is_visible ())
 184     locator->refresh_window ();
 185 }