binutils-gdb/gdb/tui/tui-command.c

/* Specific command window processing.

   Copyright (C) 1998-2019 Free Software Foundation, Inc.

   Contributed by Hewlett-Packard Company.

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#include "defs.h"
#include "tui/tui.h"
#include "tui/tui-data.h"
#include "tui/tui-win.h"
#include "tui/tui-io.h"
#include "tui/tui-command.h"
#include "tui/tui-wingeneral.h"

#include "gdb_curses.h"

/* See tui-command.h.  */

int
tui_cmd_window::max_height () const
{
  return tui_term_height () - 4;
}

void
tui_cmd_window::resize (int height_, int width_, int origin_x, int origin_y)
{
  width = width_;
  height = height_;
  if (height > 1)
    {
      /* Note this differs from the base class implementation, because
	 this window can't be boxed.  */
      viewport_height = height - 1;
    }
  else
    viewport_height = 1;
  origin.x = origin_x;
  origin.y = origin_y;

  if (handle == nullptr)
    make_window ();
  else
    {
      /* Another reason we don't call the base class method here is
	 that for the command window in particular, we want to avoid
	 destroying the underlying handle.  We don't currently track
	 the contents of this window, and so have no way to re-render
	 it.  However we can at least move it and keep the old size if
	 wresize isn't available.  */
#ifdef HAVE_WRESIZE
      wresize (handle, height, width);
#endif
      mvwin (handle, origin.y, origin.x);
      wmove (handle, 0, 0);
    }
}

/* See tui-command.h.  */

void
tui_refresh_cmd_win (void)
{
  WINDOW *w = TUI_CMD_WIN->handle;

  wrefresh (w);

  /* FIXME: It's not clear why this is here.
     It was present in the original tui_puts code and is kept in order to
     not introduce some subtle breakage.  */
  fflush (stdout);
}