465 lines
13 KiB
C
465 lines
13 KiB
C
/*
|
|
* menubox.c -- implements the menu box
|
|
*
|
|
* AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
|
|
*
|
|
* Substantial rennovation: 12/18/95, Jordan K. Hubbard
|
|
*
|
|
* This program 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.
|
|
*
|
|
* This program 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., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
|
|
#include <dialog.h>
|
|
#include "dialog.priv.h"
|
|
#include <ncurses.h>
|
|
|
|
static void print_item(WINDOW *win, unsigned char *tag, unsigned char *item, int choice, int selected,
|
|
dialogMenuItem *me);
|
|
|
|
#define DREF(di, item) ((di) ? &((di)[(item)]) : NULL)
|
|
|
|
static int menu_width, tag_x, item_x;
|
|
|
|
/*
|
|
* Display a menu for choosing among a number of options
|
|
*/
|
|
int
|
|
dialog_menu(unsigned char *title, unsigned char *prompt, int height, int width, int menu_height,
|
|
int cnt, void *it, unsigned char *result, int *ch, int *sc)
|
|
{
|
|
int i, j, x, y, cur_x, cur_y, box_x, box_y, key = 0, button = 0, choice = 0,
|
|
l, k, scroll = 0, max_choice, item_no, redraw_menu = FALSE;
|
|
char okButton, cancelButton;
|
|
WINDOW *dialog, *menu;
|
|
unsigned char **items = NULL;
|
|
dialogMenuItem *ditems;
|
|
|
|
draw:
|
|
if (ch) /* restore menu item info */
|
|
choice = *ch;
|
|
if (sc)
|
|
scroll = *sc;
|
|
|
|
/* If item_no is a positive integer, use old item specification format */
|
|
if (cnt >= 0) {
|
|
items = it;
|
|
ditems = NULL;
|
|
item_no = cnt;
|
|
}
|
|
/* It's the new specification format - fake the rest of the code out */
|
|
else {
|
|
item_no = abs(cnt);
|
|
ditems = it;
|
|
if (!items)
|
|
items = (unsigned char **)alloca((item_no * 2) * sizeof(unsigned char *));
|
|
|
|
/* Initializes status */
|
|
for (i = 0; i < item_no; i++) {
|
|
items[i*2] = ditems[i].prompt;
|
|
items[i*2 + 1] = ditems[i].title;
|
|
}
|
|
}
|
|
max_choice = MIN(menu_height, item_no);
|
|
|
|
tag_x = 0;
|
|
item_x = 0;
|
|
/* Find length of longest item in order to center menu */
|
|
for (i = 0; i < item_no; i++) {
|
|
l = strlen(items[i*2]);
|
|
for (j = 0; j < item_no; j++) {
|
|
k = strlen(items[j*2 + 1]);
|
|
tag_x = MAX(tag_x, l + k + 2);
|
|
}
|
|
item_x = MAX(item_x, l);
|
|
}
|
|
if (height < 0)
|
|
height = strheight(prompt)+menu_height+4+2;
|
|
if (width < 0) {
|
|
i = strwidth(prompt);
|
|
j = ((title != NULL) ? strwidth(title) : 0);
|
|
width = MAX(i,j);
|
|
width = MAX(width,tag_x+4)+4;
|
|
}
|
|
width = MAX(width,24);
|
|
|
|
if (width > COLS)
|
|
width = COLS;
|
|
if (height > LINES)
|
|
height = LINES;
|
|
/* center dialog box on screen */
|
|
x = DialogX ? DialogX : (COLS - width)/2;
|
|
y = DialogY ? DialogY : (LINES - height)/2;
|
|
|
|
#ifdef HAVE_NCURSES
|
|
if (use_shadow)
|
|
draw_shadow(stdscr, y, x, height, width);
|
|
#endif
|
|
dialog = newwin(height, width, y, x);
|
|
if (dialog == NULL) {
|
|
endwin();
|
|
fprintf(stderr, "\nnewwin(%d,%d,%d,%d) failed, maybe wrong dims\n", height,width,y,x);
|
|
return -1;
|
|
}
|
|
keypad(dialog, TRUE);
|
|
|
|
draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
|
|
wattrset(dialog, border_attr);
|
|
wmove(dialog, height-3, 0);
|
|
waddch(dialog, ACS_LTEE);
|
|
for (i = 0; i < width-2; i++)
|
|
waddch(dialog, ACS_HLINE);
|
|
wattrset(dialog, dialog_attr);
|
|
waddch(dialog, ACS_RTEE);
|
|
wmove(dialog, height-2, 1);
|
|
for (i = 0; i < width-2; i++)
|
|
waddch(dialog, ' ');
|
|
|
|
if (title != NULL) {
|
|
wattrset(dialog, title_attr);
|
|
wmove(dialog, 0, (width - strlen(title))/2 - 1);
|
|
waddch(dialog, ' ');
|
|
waddstr(dialog, title);
|
|
waddch(dialog, ' ');
|
|
}
|
|
wattrset(dialog, dialog_attr);
|
|
wmove(dialog, 1, 2);
|
|
print_autowrap(dialog, prompt, height-1, width-2, width, 1, 2, TRUE, FALSE);
|
|
|
|
menu_width = width-6;
|
|
getyx(dialog, cur_y, cur_x);
|
|
box_y = cur_y + 1;
|
|
box_x = (width - menu_width)/2 - 1;
|
|
|
|
/* create new window for the menu */
|
|
menu = subwin(dialog, menu_height, menu_width, y + box_y + 1, x + box_x + 1);
|
|
if (menu == NULL) {
|
|
delwin(dialog);
|
|
endwin();
|
|
fprintf(stderr, "\nsubwin(dialog,%d,%d,%d,%d) failed, maybe wrong dims\n", menu_height,menu_width,y+box_y+1,x+box_x+1);
|
|
return -1;
|
|
}
|
|
keypad(menu, TRUE);
|
|
|
|
/* draw a box around the menu items */
|
|
draw_box(dialog, box_y, box_x, menu_height+2, menu_width+2, menubox_border_attr, menubox_attr);
|
|
|
|
tag_x = (menu_width - tag_x) / 2;
|
|
item_x = tag_x + item_x + 2;
|
|
|
|
/* Print the menu */
|
|
for (i = 0; i < max_choice; i++)
|
|
print_item(menu, items[(scroll+i)*2], items[(scroll+i)*2 + 1], i, i == choice, DREF(ditems, scroll + i));
|
|
wnoutrefresh(menu);
|
|
print_arrows(dialog, scroll, menu_height, item_no, box_x, box_y, tag_x, cur_x, cur_y);
|
|
|
|
display_helpline(dialog, height-1, width);
|
|
|
|
x = width/2-11;
|
|
y = height-2;
|
|
|
|
if (ditems && result) {
|
|
cancelButton = toupper(ditems[CANCEL_BUTTON].prompt[0]);
|
|
print_button(dialog, ditems[CANCEL_BUTTON].prompt, y, x + strlen(ditems[OK_BUTTON].prompt) + 5,
|
|
ditems[CANCEL_BUTTON].checked ? ditems[CANCEL_BUTTON].checked(&ditems[CANCEL_BUTTON]) : FALSE);
|
|
okButton = toupper(ditems[OK_BUTTON].prompt[0]);
|
|
print_button(dialog, ditems[OK_BUTTON].prompt, y, x,
|
|
ditems[OK_BUTTON].checked ? ditems[OK_BUTTON].checked(&ditems[OK_BUTTON]) : TRUE);
|
|
}
|
|
else {
|
|
cancelButton = 'C';
|
|
print_button(dialog, "Cancel", y, x + 14, FALSE);
|
|
okButton = 'O';
|
|
print_button(dialog, " OK ", y, x, TRUE);
|
|
}
|
|
|
|
wrefresh(dialog);
|
|
|
|
while (key != ESC) {
|
|
key = wgetch(dialog);
|
|
|
|
/* Shortcut to OK? */
|
|
if (toupper(key) == okButton) {
|
|
if (ditems && result && ditems[OK_BUTTON].fire) {
|
|
int status;
|
|
WINDOW *save;
|
|
|
|
save = dupwin(newscr);
|
|
status = ditems[OK_BUTTON].fire(&ditems[OK_BUTTON]);
|
|
if (status & DITEM_RESTORE) {
|
|
touchwin(save);
|
|
wrefresh(save);
|
|
}
|
|
delwin(save);
|
|
}
|
|
else
|
|
strcpy(result, items[(scroll + choice) * 2]);
|
|
delwin(menu);
|
|
delwin(dialog);
|
|
return 0;
|
|
}
|
|
/* Shortcut to cancel? */
|
|
else if (toupper(key) == cancelButton) {
|
|
if (ditems && result && ditems[CANCEL_BUTTON].fire) {
|
|
int status;
|
|
WINDOW *save;
|
|
|
|
save = dupwin(newscr);
|
|
status = ditems[CANCEL_BUTTON].fire(&ditems[CANCEL_BUTTON]);
|
|
if (status & DITEM_RESTORE) {
|
|
touchwin(save);
|
|
wrefresh(save);
|
|
}
|
|
delwin(save);
|
|
}
|
|
delwin(menu);
|
|
delwin(dialog);
|
|
return 1;
|
|
}
|
|
|
|
/* Check if key pressed matches first character of any item tag in menu */
|
|
for (i = 0; i < max_choice; i++)
|
|
if (key < 0x100 && toupper(key) == toupper(items[(scroll+i)*2][0]))
|
|
break;
|
|
|
|
if (i < max_choice || (key >= '1' && key <= MIN('9', '0'+max_choice)) ||
|
|
key == KEY_UP || key == KEY_DOWN || key == '-' || key == '+') {
|
|
if (key >= '1' && key <= MIN('9', '0'+max_choice))
|
|
i = key - '1';
|
|
else if (key == KEY_UP || key == '-') {
|
|
if (!choice) {
|
|
if (scroll) {
|
|
/* Scroll menu down */
|
|
getyx(dialog, cur_y, cur_x); /* Save cursor position */
|
|
if (menu_height > 1) {
|
|
/* De-highlight current first item before scrolling down */
|
|
print_item(menu, items[scroll*2], items[scroll*2 + 1], 0, FALSE, DREF(ditems, scroll));
|
|
scrollok(menu, TRUE);
|
|
wscrl(menu, -1);
|
|
scrollok(menu, FALSE);
|
|
}
|
|
scroll--;
|
|
print_item(menu, items[scroll*2], items[scroll*2 + 1], 0, TRUE, DREF(ditems, scroll));
|
|
wnoutrefresh(menu);
|
|
print_arrows(dialog, scroll, menu_height, item_no, box_x, box_y, tag_x, cur_x, cur_y);
|
|
wrefresh(dialog);
|
|
}
|
|
continue; /* wait for another key press */
|
|
}
|
|
else
|
|
i = choice - 1;
|
|
}
|
|
else if (key == KEY_DOWN || key == '+')
|
|
if (choice == max_choice - 1) {
|
|
if (scroll+choice < item_no-1) {
|
|
/* Scroll menu up */
|
|
getyx(dialog, cur_y, cur_x); /* Save cursor position */
|
|
if (menu_height > 1) {
|
|
/* De-highlight current last item before scrolling up */
|
|
print_item(menu, items[(scroll + max_choice - 1) * 2], items[(scroll + max_choice - 1) * 2 + 1],
|
|
max_choice-1, FALSE, DREF(ditems, scroll + max_choice - 1));
|
|
scrollok(menu, TRUE);
|
|
scroll(menu);
|
|
scrollok(menu, FALSE);
|
|
}
|
|
scroll++;
|
|
print_item(menu, items[(scroll + max_choice - 1) * 2], items[(scroll + max_choice - 1) * 2 + 1],
|
|
max_choice - 1, TRUE, DREF(ditems, scroll + max_choice - 1));
|
|
wnoutrefresh(menu);
|
|
print_arrows(dialog, scroll, menu_height, item_no, box_x, box_y, tag_x, cur_x, cur_y);
|
|
wrefresh(dialog);
|
|
}
|
|
continue; /* wait for another key press */
|
|
}
|
|
else
|
|
i = choice + 1;
|
|
|
|
if (i != choice) {
|
|
/* De-highlight current item */
|
|
getyx(dialog, cur_y, cur_x); /* Save cursor position */
|
|
print_item(menu, items[(scroll + choice) * 2], items[(scroll + choice) * 2 + 1], choice, FALSE,
|
|
DREF(ditems, scroll + choice));
|
|
|
|
/* Highlight new item */
|
|
choice = i;
|
|
print_item(menu, items[(scroll + choice) * 2], items[(scroll + choice) * 2 + 1], choice, TRUE,
|
|
DREF(ditems, scroll + choice));
|
|
wnoutrefresh(menu);
|
|
wmove(dialog, cur_y, cur_x); /* Restore cursor to previous position */
|
|
wrefresh(dialog);
|
|
}
|
|
continue; /* wait for another key press */
|
|
}
|
|
|
|
/* save info about menu item position */
|
|
if (ch)
|
|
*ch = choice;
|
|
if (sc)
|
|
*sc = scroll;
|
|
|
|
switch (key) {
|
|
case KEY_PPAGE:
|
|
if (scroll > height-4) { /* can we go up? */
|
|
scroll -= (height-4);
|
|
} else {
|
|
scroll = 0;
|
|
}
|
|
redraw_menu = TRUE;
|
|
break;
|
|
|
|
case KEY_NPAGE:
|
|
if (scroll + menu_height >= item_no-1 - menu_height) { /* can we go down a full page? */
|
|
scroll = item_no - menu_height;
|
|
if (scroll < 0) scroll = 0;
|
|
} else {
|
|
scroll += menu_height;
|
|
}
|
|
redraw_menu = TRUE;
|
|
break;
|
|
|
|
case KEY_HOME:
|
|
scroll = 0;
|
|
choice = 0;
|
|
redraw_menu = TRUE;
|
|
break;
|
|
|
|
case KEY_END:
|
|
scroll = item_no - menu_height;
|
|
if (scroll < 0) scroll = 0;
|
|
choice = max_choice - 1;
|
|
redraw_menu = TRUE;
|
|
break;
|
|
|
|
case KEY_BTAB:
|
|
case TAB:
|
|
case KEY_LEFT:
|
|
case KEY_RIGHT:
|
|
button = !button;
|
|
if (ditems && result) {
|
|
if (button) {
|
|
print_button(dialog, ditems[OK_BUTTON].prompt, y, x,
|
|
ditems[OK_BUTTON].checked ? ditems[OK_BUTTON].checked(&ditems[OK_BUTTON]) : !button);
|
|
print_button(dialog, ditems[CANCEL_BUTTON].prompt, y, x + strlen(ditems[OK_BUTTON].prompt) + 5,
|
|
ditems[CANCEL_BUTTON].checked ? ditems[CANCEL_BUTTON].checked(&ditems[CANCEL_BUTTON]) : button);
|
|
}
|
|
else {
|
|
print_button(dialog, ditems[CANCEL_BUTTON].prompt, y, x + strlen(ditems[OK_BUTTON].prompt) + 5,
|
|
ditems[CANCEL_BUTTON].checked ? ditems[CANCEL_BUTTON].checked(&ditems[CANCEL_BUTTON]) : button);
|
|
print_button(dialog, ditems[OK_BUTTON].prompt, y, x,
|
|
ditems[OK_BUTTON].checked ? ditems[OK_BUTTON].checked(&ditems[OK_BUTTON]) : !button);
|
|
}
|
|
}
|
|
else {
|
|
if (button) {
|
|
print_button(dialog, " OK ", y, x, !button);
|
|
print_button(dialog, "Cancel", y, x + 14, button);
|
|
}
|
|
else {
|
|
print_button(dialog, "Cancel", y, x + 14, button);
|
|
print_button(dialog, " OK ", y, x, !button);
|
|
}
|
|
}
|
|
wrefresh(dialog);
|
|
break;
|
|
|
|
case ' ':
|
|
case '\r':
|
|
case '\n':
|
|
if (!button) {
|
|
/* A fire routine can do just about anything to the screen, so be prepared
|
|
to accept some hints as to what to do in the aftermath. */
|
|
if (ditems && ditems[scroll + choice].fire) {
|
|
int status;
|
|
WINDOW *save;
|
|
|
|
save = dupwin(newscr);
|
|
status = ditems[scroll + choice].fire(&ditems[scroll + choice]);
|
|
if (status & DITEM_RESTORE) {
|
|
touchwin(save);
|
|
wrefresh(save);
|
|
}
|
|
else if (status & DITEM_RECREATE) {
|
|
delwin(menu);
|
|
delwin(dialog);
|
|
delwin(save);
|
|
goto draw;
|
|
}
|
|
delwin(save);
|
|
if (status & DITEM_CONTINUE)
|
|
continue;
|
|
}
|
|
else if (result)
|
|
strcpy(result, items[(scroll+choice)*2]);
|
|
}
|
|
delwin(menu);
|
|
delwin(dialog);
|
|
return button;
|
|
|
|
case ESC:
|
|
break;
|
|
|
|
case KEY_F(1):
|
|
case '?':
|
|
display_helpfile();
|
|
break;
|
|
}
|
|
|
|
if (redraw_menu) {
|
|
for (i = 0; i < max_choice; i++) {
|
|
print_item(menu, items[(scroll + i) * 2], items[(scroll + i) * 2 + 1], i, i == choice,
|
|
DREF(ditems, scroll + i));
|
|
}
|
|
wnoutrefresh(menu);
|
|
print_arrows(dialog, scroll, menu_height, item_no, box_x, box_y, tag_x, cur_x, cur_y);
|
|
wrefresh(dialog);
|
|
redraw_menu = FALSE;
|
|
}
|
|
}
|
|
|
|
delwin(menu);
|
|
delwin(dialog);
|
|
return -1; /* ESC pressed */
|
|
}
|
|
/* End of dialog_menu() */
|
|
|
|
|
|
/*
|
|
* Print menu item
|
|
*/
|
|
static void
|
|
print_item(WINDOW *win, unsigned char *tag, unsigned char *item, int choice, int selected, dialogMenuItem *me)
|
|
{
|
|
int i;
|
|
|
|
/* Clear 'residue' of last item */
|
|
wattrset(win, menubox_attr);
|
|
wmove(win, choice, 0);
|
|
for (i = 0; i < menu_width; i++)
|
|
waddch(win, ' ');
|
|
wmove(win, choice, tag_x);
|
|
wattrset(win, selected ? tag_key_selected_attr : tag_key_attr);
|
|
waddch(win, tag[0]);
|
|
wattrset(win, selected ? tag_selected_attr : tag_attr);
|
|
waddstr(win, tag + 1);
|
|
wmove(win, choice, item_x);
|
|
wattrset(win, selected ? item_selected_attr : item_attr);
|
|
waddstr(win, item);
|
|
/* If have a selection handler for this, call it */
|
|
if (me && me->selected) {
|
|
wrefresh(win);
|
|
me->selected(me, selected);
|
|
}
|
|
}
|
|
/* End of print_item() */
|