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/* $Id$ */
#include "bbs.h"
/* ----------------------------------------------------- */
/* basic tty control */
/* ----------------------------------------------------- */
void
init_tty(void)
{
struct termios tty_state, tty_new;
if (tcgetattr(1, &tty_state) < 0) {
syslog(LOG_ERR, "tcgetattr(): %m");
return;
}
memcpy(&tty_new, &tty_state, sizeof(tty_new));
tty_new.c_lflag &= ~(ICANON | ECHO | ISIG);
/*
* tty_new.c_cc[VTIME] = 0; tty_new.c_cc[VMIN] = 1;
*/
tcsetattr(1, TCSANOW, &tty_new);
system("stty raw -echo");
}
/* ----------------------------------------------------- */
/* init tty control code */
/* ----------------------------------------------------- */
#define TERMCOMSIZE (40)
static void
sig_term_resize(int sig)
{
struct winsize newsize;
Signal(SIGWINCH, SIG_IGN); /* Don't bother me! */
ioctl(0, TIOCGWINSZ, &newsize);
term_resize(newsize.ws_col, newsize.ws_row);
}
void term_resize(int w, int h)
{
screenline_t *new_picture;
Signal(SIGWINCH, SIG_IGN); /* Don't bother me! */
/* make sure reasonable size */
h = MAX(24, MIN(100, h));
w = MAX(80, MIN(200, w));
if (h > t_lines && big_picture) {
new_picture = (screenline_t *)
calloc(h, sizeof(screenline_t));
if (new_picture == NULL) {
syslog(LOG_ERR, "calloc(): %m");
return;
}
memcpy(new_picture, big_picture, t_lines * sizeof(screenline_t));
free(big_picture);
big_picture = new_picture;
}
t_lines = h;
t_columns = w;
scr_lns = t_lines; /* XXX: scr_lns 跟 t_lines 有什麼不同, 為何分成兩個 */
b_lines = t_lines - 1;
p_lines = t_lines - 4;
Signal(SIGWINCH, sig_term_resize);
}
int
term_init(void)
{
Signal(SIGWINCH, sig_term_resize);
return YEA;
}
void
do_move(int destcol, int destline)
{
char buf[16], *p;
snprintf(buf, sizeof(buf), ANSI_MOVETO(%d,%d), destline + 1, destcol + 1);
for (p = buf; *p; p++)
ochar(*p);
}
void
save_cursor(void)
{
ochar(ESC_CHR);
ochar('7');
}
void
restore_cursor(void)
{
ochar(ESC_CHR);
ochar('8');
}
void
change_scroll_range(int top, int bottom)
{
char buf[16], *p;
snprintf(buf, sizeof(buf), ESC_STR "[%d;%dr", top + 1, bottom + 1);
for (p = buf; *p; p++)
ochar(*p);
}
void
scroll_forward(void)
{
ochar(ESC_CHR);
ochar('D');
}
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