static void draw_row(int y, int sel, int top, int sbtop, int sbbot)
{
int i = (y - 4 - VSHIFT) + top;
int dis = (i < cm->nentries) && is_disabled(cm->menu_entries[i]);
printf("\033[%d;%dH\1#1\016x\017%s ",
y, MARGIN + 1 + HSHIFT,
(i == sel) ? "\1#5" : dis ? "\2#17" : "\1#3");
if (i >= cm->nentries) {
fputs(pad_line("", 0, WIDTH - 2 * MARGIN - 4), stdout);
} else {
display_entry(cm->menu_entries[i],
(i == sel) ? "\1#5" : dis ? "\2#17" : "\1#3",
(i == sel) ? "\1#6" : dis ? "\2#17" : "\1#4",
WIDTH - 2 * MARGIN - 4);
}
if (cm->nentries <= MENU_ROWS) {
printf(" \1#1\016x\017");
} else if (sbtop > 0) {
if (y >= sbtop && y <= sbbot)
printf(" \1#7\016a\017");
else
printf(" \1#1\016x\017");
} else {
putchar(' '); /* Don't modify the scrollbar */
}
}
static void draw_menu(int sel, int top, int edit_line)
{
int x, y;
int sbtop = 0, sbbot = 0;
const char *tabmsg;
int tabmsg_len;
if (cm->nentries > MENU_ROWS) {
int sblen = max(MENU_ROWS * MENU_ROWS / cm->nentries, 1);
sbtop = ((MENU_ROWS - sblen + 1) * top /
(cm->nentries - MENU_ROWS + 1)) + VSHIFT;
sbbot = sbtop + sblen - 1;
sbtop += 4;
sbbot += 4; /* Starting row of scrollbar */
}
printf("\033[%d;%dH\1#1\016l", VSHIFT + 1, HSHIFT + MARGIN + 1);
for (x = 2 + HSHIFT; x <= (WIDTH - 2 * MARGIN - 1) + HSHIFT; x++)
putchar('q');
printf("k\033[%d;%dH\1#1x\017\1#2 %s \1#1\016x",
VSHIFT + 2,
HSHIFT + MARGIN + 1, pad_line(cm->title, 1, WIDTH - 2 * MARGIN - 4));
printf("\033[%d;%dH\1#1t", VSHIFT + 3, HSHIFT + MARGIN + 1);
for (x = 2 + HSHIFT; x <= (WIDTH - 2 * MARGIN - 1) + HSHIFT; x++)
putchar('q');
fputs("u\017", stdout);
for (y = 4 + VSHIFT; y < 4 + VSHIFT + MENU_ROWS; y++)
draw_row(y, sel, top, sbtop, sbbot);
printf("\033[%d;%dH\1#1\016m", y, HSHIFT + MARGIN + 1);
for (x = 2 + HSHIFT; x <= (WIDTH - 2 * MARGIN - 1) + HSHIFT; x++)
putchar('q');
fputs("j\017", stdout);
if (edit_line && cm->allowedit && !cm->menu_master_passwd)
tabmsg = cm->messages[MSG_TAB];
else
tabmsg = cm->messages[MSG_NOTAB];
tabmsg_len = strlen(tabmsg);
printf("\1#8\033[%d;%dH%s",
TABMSG_ROW, 1 + HSHIFT + ((WIDTH - tabmsg_len) >> 1), tabmsg);
printf("\1#0\033[%d;1H", END_ROW);
}
static const char *edit_cmdline(const char *input, int top)
{
static char cmdline[MAX_CMDLINE_LEN];
int key, len, prev_len, cursor;
int redraw = 1; /* We enter with the menu already drawn */
strlcpy(cmdline, input, MAX_CMDLINE_LEN);
cmdline[MAX_CMDLINE_LEN - 1] = '\0';
len = cursor = strlen(cmdline);
prev_len = 0;
for (;;) {
if (redraw > 1) {
/* Clear and redraw whole screen */
/* Enable ASCII on G0 and DEC VT on G1; do it in this order
to avoid confusing the Linux console */
clear_screen();
draw_menu(-1, top, 1);
prev_len = 0;
}
if (redraw > 0) {
/* Redraw the command line */
printf("\033[?25l\033[%d;1H\1#9> \2#10%s",
CMDLINE_ROW, pad_line(cmdline, 0, max(len, prev_len)));
printf("\2#10\033[%d;3H%s\033[?25h",
CMDLINE_ROW, pad_line(cmdline, 0, cursor));
prev_len = len;
redraw = 0;
}
key = mygetkey(0);
switch (key) {
case KEY_CTRL('L'):
redraw = 2;
break;
case KEY_ENTER:
case KEY_CTRL('J'):
return cmdline;
case KEY_ESC:
case KEY_CTRL('C'):
return NULL;
case KEY_BACKSPACE:
case KEY_DEL:
if (cursor) {
memmove(cmdline + cursor - 1, cmdline + cursor,
len - cursor + 1);
len--;
cursor--;
redraw = 1;
}
break;
case KEY_CTRL('D'):
case KEY_DELETE:
if (cursor < len) {
memmove(cmdline + cursor, cmdline + cursor + 1, len - cursor);
len--;
redraw = 1;
}
break;
case KEY_CTRL('U'):
if (len) {
len = cursor = 0;
cmdline[len] = '\0';
redraw = 1;
}
break;
case KEY_CTRL('W'):
if (cursor) {
int prevcursor = cursor;
while (cursor && my_isspace(cmdline[cursor - 1]))
cursor--;
while (cursor && !my_isspace(cmdline[cursor - 1]))
cursor--;
memmove(cmdline + cursor, cmdline + prevcursor,
len - prevcursor + 1);
len -= (prevcursor - cursor);
redraw = 1;
}
break;
case KEY_LEFT:
case KEY_CTRL('B'):
if (cursor) {
cursor--;
redraw = 1;
}
break;
case KEY_RIGHT:
case KEY_CTRL('F'):
if (cursor < len) {
putchar(cmdline[cursor++]);
}
break;
case KEY_CTRL('K'):
if (cursor < len) {
cmdline[len = cursor] = '\0';
redraw = 1;
}
break;
case KEY_HOME:
case KEY_CTRL('A'):
if (cursor) {
cursor = 0;
redraw = 1;
}
break;
case KEY_END:
case KEY_CTRL('E'):
if (cursor != len) {
cursor = len;
redraw = 1;
}
break;
case KEY_F1:
case KEY_F2:
case KEY_F3:
case KEY_F4:
case KEY_F5:
case KEY_F6:
case KEY_F7:
case KEY_F8:
case KEY_F9:
case KEY_F10:
case KEY_F11:
case KEY_F12:
show_fkey(key);
redraw = 1;
break;
default:
if (key >= ' ' && key <= 0xFF && len < MAX_CMDLINE_LEN - 1) {
if (cursor == len) {
cmdline[len] = key;
cmdline[++len] = '\0';
cursor++;
putchar(key);
prev_len++;
} else {
memmove(cmdline + cursor + 1, cmdline + cursor,
len - cursor + 1);
cmdline[cursor++] = key;
len++;
redraw = 1;
}
}
break;
}
}
}
