gdb/tui/tui-command.c

   1 /* Specific command window processing.
   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-win.h"
  26 #include "tui/tui-io.h"
  27 #include "tui/tui-command.h"
  28 #include "tui/tui-wingeneral.h"
  29
  30 #include "gdb_curses.h"
  31
  32 /* See tui-command.h.  */
  33
  34 int
  35 tui_cmd_window::max_height () const
  36 {
  37   return tui_term_height () - 4;
  38 }
  39
  40 void
  41 tui_cmd_window::resize (int height_, int width_, int origin_x, int origin_y)
  42 {
  43   width = width_;
  44   height = height_;
  45   if (height > 1)
  46     {
  47       /* Note this differs from the base class implementation, because
  48          this window can't be boxed.  */
  49       viewport_height = height - 1;
  50     }
  51   else
  52     viewport_height = 1;
  53   x = origin_x;
  54   y = origin_y;
  55
  56   if (handle == nullptr)
  57     make_window ();
  58   else
  59     {
  60       /* Another reason we don't call the base class method here is
  61          that for the command window in particular, we want to avoid
  62          destroying the underlying handle.  We don't currently track
  63          the contents of this window, and so have no way to re-render
  64          it.  However we can at least move it and keep the old size if
  65          wresize isn't available.  */
  66 #ifdef HAVE_WRESIZE
  67       wresize (handle.get (), height, width);
  68 #endif
  69       mvwin (handle.get (), y, x);
  70       wmove (handle.get (), 0, 0);
  71     }
  72 }
  73
  74 /* See tui-command.h.  */
  75
  76 void
  77 tui_refresh_cmd_win (void)
  78 {
  79   WINDOW *w = TUI_CMD_WIN->handle.get ();
  80
  81   wrefresh (w);
  82
  83   /* FIXME: It's not clear why this is here.
  84      It was present in the original tui_puts code and is kept in order to
  85      not introduce some subtle breakage.  */
  86   fflush (stdout);
  87 }