void erase_screen(struct terminal *term)
{
if (!term->master || !is_blocked()) {
if (term->master) want_draw();
hard_write(term->fdout, "\033[2J\033[1;1H", 10);
if (term->master) done_draw();
}
}
void redraw_screen(struct terminal *term)
{
int x, y, p = 0;
int cx = term->lcx, cy = term->lcy;
unsigned char *a;
int attrib = -1;
int mode = -1;
int l = 0;
struct term_spec *s;
if (!term->dirty || (term->master && is_blocked())) return;
a = init_str();
s = term->spec;
for (y = 0; y < term->y; y++)
for (x = 0; x < term->x; x++, p++) {
if (y == term->y - 1 && x == term->x - 1) break;
if (term->screen[p] == term->last_screen[p]) continue;
if ((term->screen[p] & 0x3800) == (term->last_screen[p] & 0x3800) && ((term->screen[p] & 0xff) == 0 || (term->screen[p] & 0xff) == 1 || (term->screen[p] & 0xff) == ' ') && ((term->last_screen[p] & 0xff) == 0 || (term->last_screen[p] & 0xff) == 1 || (term->last_screen[p] & 0xff) == ' ') && (x != term->cx || y != term->cy)) continue;
term->last_screen[p] = term->screen[p];
if (cx == x && cy == y) goto pc;/*PRINT_CHAR(p)*/
else if (cy == y && x - cx < 10 && x - cx > 0) {
int i;
for (i = x - cx; i >= 0; i--) PRINT_CHAR(p - i);
} else {
add_to_str(&a, &l, "\033[");
add_num_to_str(&a, &l, y + 1);
add_to_str(&a, &l, ";");
add_num_to_str(&a, &l, x + 1);
add_to_str(&a, &l, "H");
cx = x;
cy = y;
pc:
PRINT_CHAR(p);
}
}
if (l) {
if (s->col) add_to_str(&a, &l, "\033[37;40m");
add_to_str(&a, &l, "\033[0m");
if (s->mode == TERM_LINUX && s->m11_hack) add_to_str(&a, &l, "\033[10m");
if (s->mode == TERM_VT100) add_to_str(&a, &l, "\x0f");
}
term->lcx = cx;
term->lcy = cy;
if (term->cx != term->lcx || term->cy != term->lcy) {
term->lcx = term->cx;
term->lcy = term->cy;
add_to_str(&a, &l, "\033[");
add_num_to_str(&a, &l, term->cy + 1);
add_to_str(&a, &l, ";");
add_num_to_str(&a, &l, term->cx + 1);
add_to_str(&a, &l, "H");
}
if (l && term->master) want_draw();
hard_write(term->fdout, a, l);
if (l && term->master) done_draw();
mem_free(a);
term->dirty = 0;
}
static void inline
safe_hard_write(int fd, unsigned char *buf, int len)
{
if (is_blocked()) return;
want_draw();
hard_write(fd, buf, len);
done_draw();
}