grub/util/console.c
robertmh 1593e10c1e 2007-11-18 Christian Franke <franke@computer.org>
* util/console.c (grub_ncurses_getkey): Change curses KEY_* mapping,
	now return control chars instead of GRUB_CONSOLE_KEY_* constants.
	This fixes the problem that function keys did not work in grub-emu.
2007-11-18 07:20:45 +00:00

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/* console.c -- Ncurses console for GRUB. */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2003,2005,2007 Free Software Foundation, Inc.
*
* GRUB 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.
*
* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#if defined(HAVE_NCURSES_CURSES_H)
# include <ncurses/curses.h>
#elif defined(HAVE_NCURSES_H)
# include <ncurses.h>
#elif defined(HAVE_CURSES_H)
# include <curses.h>
#endif
/* For compatibility. */
#ifndef A_NORMAL
# define A_NORMAL 0
#endif /* ! A_NORMAL */
#ifndef A_STANDOUT
# define A_STANDOUT 0
#endif /* ! A_STANDOUT */
#include <grub/machine/console.h>
#include <grub/term.h>
#include <grub/types.h>
static int grub_console_attr = A_NORMAL;
static void
grub_ncurses_putchar (grub_uint32_t c)
{
/* Better than nothing. */
switch (c)
{
case GRUB_TERM_DISP_LEFT:
c = '<';
break;
case GRUB_TERM_DISP_UP:
c = '^';
break;
case GRUB_TERM_DISP_RIGHT:
c = '>';
break;
case GRUB_TERM_DISP_DOWN:
c = 'v';
break;
case GRUB_TERM_DISP_HLINE:
c = '-';
break;
case GRUB_TERM_DISP_VLINE:
c = '|';
break;
case GRUB_TERM_DISP_UL:
case GRUB_TERM_DISP_UR:
case GRUB_TERM_DISP_LL:
case GRUB_TERM_DISP_LR:
c = '+';
break;
default:
/* ncurses does not support Unicode. */
if (c > 0x7f)
c = '?';
break;
}
addch (c | grub_console_attr);
}
static grub_ssize_t
grub_ncurses_getcharwidth (grub_uint32_t code __attribute__ ((unused)))
{
return 1;
}
static void
grub_ncurses_setcolorstate (grub_term_color_state state)
{
switch (state)
{
case GRUB_TERM_COLOR_STANDARD:
grub_console_attr = A_NORMAL;
break;
case GRUB_TERM_COLOR_NORMAL:
grub_console_attr = A_NORMAL;
break;
case GRUB_TERM_COLOR_HIGHLIGHT:
grub_console_attr = A_STANDOUT;
break;
default:
break;
}
}
/* XXX: This function is never called. */
static void
grub_ncurses_setcolor (grub_uint8_t normal_color, grub_uint8_t highlight_color)
{
color_set (normal_color << 8 | highlight_color, 0);
}
static int saved_char = ERR;
static int
grub_ncurses_checkkey (void)
{
int c;
/* Check for SAVED_CHAR. This should not be true, because this
means checkkey is called twice continuously. */
if (saved_char != ERR)
return saved_char;
wtimeout (stdscr, 100);
c = getch ();
/* If C is not ERR, then put it back in the input queue. */
if (c != ERR)
{
saved_char = c;
return c;
}
return -1;
}
static int
grub_ncurses_getkey (void)
{
int c;
/* If checkkey has already got a character, then return it. */
if (saved_char != ERR)
{
c = saved_char;
saved_char = ERR;
}
else
{
wtimeout (stdscr, -1);
c = getch ();
}
switch (c)
{
case KEY_LEFT:
c = 2;
break;
case KEY_RIGHT:
c = 6;
break;
case KEY_UP:
c = 16;
break;
case KEY_DOWN:
c = 14;
break;
case KEY_IC:
c = 24;
break;
case KEY_DC:
c = 4;
break;
case KEY_BACKSPACE:
/* XXX: For some reason ncurses on xterm does not return
KEY_BACKSPACE. */
case 127:
c = 8;
break;
case KEY_HOME:
c = 1;
break;
case KEY_END:
c = 5;
break;
case KEY_NPAGE:
c = 3;
break;
case KEY_PPAGE:
c = 7;
break;
}
return c;
}
static grub_uint16_t
grub_ncurses_getxy (void)
{
int x;
int y;
getyx (stdscr, y, x);
return (x << 8) | y;
}
static grub_uint16_t
grub_ncurses_getwh (void)
{
int x;
int y;
getmaxyx (stdscr, y, x);
return (x << 8) | y;
}
static void
grub_ncurses_gotoxy (grub_uint8_t x, grub_uint8_t y)
{
move (y, x);
}
static void
grub_ncurses_cls (void)
{
clear ();
refresh ();
}
static void
grub_ncurses_setcursor (int on)
{
curs_set (on ? 1 : 0);
}
static void
grub_ncurses_refresh (void)
{
refresh ();
}
static grub_err_t
grub_ncurses_init (void)
{
initscr ();
raw ();
noecho ();
scrollok (stdscr, TRUE);
nonl ();
intrflush (stdscr, FALSE);
keypad (stdscr, TRUE);
start_color ();
return 0;
}
static grub_err_t
grub_ncurses_fini (void)
{
endwin ();
return 0;
}
static struct grub_term grub_ncurses_term =
{
.name = "console",
.init = grub_ncurses_init,
.fini = grub_ncurses_fini,
.putchar = grub_ncurses_putchar,
.getcharwidth = grub_ncurses_getcharwidth,
.checkkey = grub_ncurses_checkkey,
.getkey = grub_ncurses_getkey,
.getxy = grub_ncurses_getxy,
.getwh = grub_ncurses_getwh,
.gotoxy = grub_ncurses_gotoxy,
.cls = grub_ncurses_cls,
.setcolorstate = grub_ncurses_setcolorstate,
.setcolor = grub_ncurses_setcolor,
.setcursor = grub_ncurses_setcursor,
.refresh = grub_ncurses_refresh,
.flags = 0,
.next = 0
};
void
grub_console_init (void)
{
grub_term_register (&grub_ncurses_term);
grub_term_set_current (&grub_ncurses_term);
}
void
grub_console_fini (void)
{
grub_ncurses_fini ();
}