mc/lib/tty/tty.c
Slava Zanko aad40e52fb Moved mc_refresh() to lib/widget
Signed-off-by: Slava Zanko <slavazanko@gmail.com>
2011-03-21 23:55:52 +02:00

262 lines
7.2 KiB
C

/*
Interface to the terminal controlling library.
Copyright (C) 2005, 2006, 2007, 2009 Free Software Foundation, Inc.
Written by:
Roland Illig <roland.illig@gmx.de>, 2005.
Andrew Borodin <aborodin@vmail.ru>, 2009.
This file is part of the Midnight Commander.
The Midnight Commander 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 2 of the
License, or (at your option) any later version.
The Midnight Commander 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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
MA 02110-1301, USA.
*/
/** \file tty.c
* \brief Source: %interface to the terminal controlling library
*/
#include <config.h>
#include <signal.h>
#include <stdarg.h>
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
#include "lib/global.h"
#include "lib/strutil.h"
#include "tty.h"
#include "tty-internal.h"
#include "win.h"
/*** global variables ****************************************************************************/
/* If true program softkeys (HP terminals only) on startup and after every
command ran in the subshell to the description found in the termcap/terminfo
database */
int reset_hp_softkeys = 0;
/* If true lines are drown by spaces */
gboolean slow_tty = FALSE;
/* If true use +, -, | for line drawing */
gboolean ugly_line_drawing = FALSE;
int mc_tty_frm[MC_TTY_FRM_MAX];
/*** file scope macro definitions ****************************************************************/
/*** file scope type declarations ****************************************************************/
/*** file scope variables ************************************************************************/
static volatile sig_atomic_t got_interrupt = 0;
/*** file scope functions ************************************************************************/
/* --------------------------------------------------------------------------------------------- */
static void
sigintr_handler (int signo)
{
(void) &signo;
got_interrupt = 1;
}
/* --------------------------------------------------------------------------------------------- */
/*** public functions ****************************************************************************/
/* --------------------------------------------------------------------------------------------- */
extern gboolean
tty_is_slow (void)
{
return slow_tty;
}
/* --------------------------------------------------------------------------------------------- */
extern void
tty_start_interrupt_key (void)
{
struct sigaction act;
act.sa_handler = sigintr_handler;
sigemptyset (&act.sa_mask);
act.sa_flags = SA_RESTART;
sigaction (SIGINT, &act, NULL);
}
/* --------------------------------------------------------------------------------------------- */
extern void
tty_enable_interrupt_key (void)
{
struct sigaction act;
act.sa_handler = sigintr_handler;
sigemptyset (&act.sa_mask);
act.sa_flags = 0;
sigaction (SIGINT, &act, NULL);
got_interrupt = 0;
}
/* --------------------------------------------------------------------------------------------- */
extern void
tty_disable_interrupt_key (void)
{
struct sigaction act;
act.sa_handler = SIG_IGN;
sigemptyset (&act.sa_mask);
act.sa_flags = 0;
sigaction (SIGINT, &act, NULL);
}
/* --------------------------------------------------------------------------------------------- */
extern gboolean
tty_got_interrupt (void)
{
gboolean rv;
rv = (got_interrupt != 0);
got_interrupt = 0;
return rv;
}
/* --------------------------------------------------------------------------------------------- */
void
tty_print_one_hline (gboolean single)
{
tty_print_alt_char (ACS_HLINE, single);
}
/* --------------------------------------------------------------------------------------------- */
void
tty_print_one_vline (gboolean single)
{
tty_print_alt_char (ACS_VLINE, single);
}
/* --------------------------------------------------------------------------------------------- */
void
tty_draw_box (int y, int x, int ys, int xs, gboolean single)
{
ys--;
xs--;
tty_draw_vline (y, x, mc_tty_frm[single ? MC_TTY_FRM_VERT : MC_TTY_FRM_DVERT], ys);
tty_draw_vline (y, x + xs, mc_tty_frm[single ? MC_TTY_FRM_VERT : MC_TTY_FRM_DVERT], ys);
tty_draw_hline (y, x, mc_tty_frm[single ? MC_TTY_FRM_HORIZ : MC_TTY_FRM_DHORIZ], xs);
tty_draw_hline (y + ys, x, mc_tty_frm[single ? MC_TTY_FRM_HORIZ : MC_TTY_FRM_DHORIZ], xs);
tty_gotoyx (y, x);
tty_print_alt_char (ACS_ULCORNER, single);
tty_gotoyx (y + ys, x);
tty_print_alt_char (ACS_LLCORNER, single);
tty_gotoyx (y, x + xs);
tty_print_alt_char (ACS_URCORNER, single);
tty_gotoyx (y + ys, x + xs);
tty_print_alt_char (ACS_LRCORNER, single);
}
/* --------------------------------------------------------------------------------------------- */
char *
mc_tty_normalize_from_utf8 (const char *str)
{
GIConv conv;
GString *buffer;
const char *_system_codepage = str_detect_termencoding ();
if (str_isutf8 (_system_codepage))
return g_strdup (str);
conv = g_iconv_open (_system_codepage, "UTF-8");
if (conv == INVALID_CONV)
return g_strdup (str);
buffer = g_string_new ("");
if (str_convert (conv, str, buffer) == ESTR_FAILURE)
{
g_string_free (buffer, TRUE);
str_close_conv (conv);
return g_strdup (str);
}
str_close_conv (conv);
return g_string_free (buffer, FALSE);
}
/* --------------------------------------------------------------------------------------------- */
/** Resize given terminal using TIOCSWINSZ, return ioctl() result */
int
tty_resize (int fd)
{
#if defined TIOCSWINSZ
struct winsize tty_size;
tty_size.ws_row = LINES;
tty_size.ws_col = COLS;
tty_size.ws_xpixel = tty_size.ws_ypixel = 0;
return ioctl (fd, TIOCSWINSZ, &tty_size);
#else
return 0;
#endif
}
/* --------------------------------------------------------------------------------------------- */
void
tty_low_level_change_screen_size (void)
{
#if defined(HAVE_SLANG) || NCURSES_VERSION_MAJOR >= 4
#if defined TIOCGWINSZ
struct winsize winsz;
winsz.ws_col = winsz.ws_row = 0;
/* Ioctl on the STDIN_FILENO */
ioctl (0, TIOCGWINSZ, &winsz);
if (winsz.ws_col && winsz.ws_row)
{
#if defined(NCURSES_VERSION) && defined(HAVE_RESIZETERM)
resizeterm (winsz.ws_row, winsz.ws_col);
clearok (stdscr, TRUE); /* sigwinch's should use a semaphore! */
#else
COLS = winsz.ws_col;
LINES = winsz.ws_row;
#endif
#ifdef HAVE_SUBSHELL_SUPPORT
if (!mc_global.tty.use_subshell)
return;
tty_resize (mc_global.tty.subshell_pty);
#endif
}
#endif /* TIOCGWINSZ */
#endif /* defined(HAVE_SLANG) || NCURSES_VERSION_MAJOR >= 4 */
}
/* --------------------------------------------------------------------------------------------- */