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Diffstat (limited to 'Build/source/utils/dialog/menubox.c')
-rw-r--r--Build/source/utils/dialog/menubox.c316
1 files changed, 316 insertions, 0 deletions
diff --git a/Build/source/utils/dialog/menubox.c b/Build/source/utils/dialog/menubox.c
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+++ b/Build/source/utils/dialog/menubox.c
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+/*
+ * menubox.c -- implements the menu box
+ *
+ * AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
+ *
+ * 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"
+
+
+static void print_item(WINDOW *win, char *tag, char *item, int choice, int selected);
+
+
+static int menu_width, tag_x, item_x;
+
+
+/*
+ * Display a menu for choosing among a number of options
+ */
+int dialog_menu(char *title, char *prompt, int height, int width, int menu_height, int item_no, char **items)
+{
+ int i, x, y, cur_x, cur_y, box_x, box_y, key = 0, button = 0, choice = 0,
+ scrolli = 0, max_choice;
+ WINDOW *dialog, *menu;
+
+ max_choice = MIN(menu_height, item_no);
+
+ /* center dialog box on screen */
+ x = (COLS - width)/2;
+ y = (LINES - height)/2;
+
+#ifdef HAVE_NCURSES
+ if (use_shadow)
+ draw_shadow(stdscr, y, x, height, width);
+#endif
+ dialog = newwin(height, width, y, x);
+ 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);
+ print_autowrap(dialog, prompt, width, 1, 3);
+
+ 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);
+ 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 = 0;
+ item_x = 0;
+ /* Find length of longest item in order to center menu */
+ for (i = 0; i < item_no; i++) {
+ tag_x = MAX(tag_x, strlen(items[i*2]) + strlen(items[i*2 + 1]) + 2);
+ item_x = MAX(item_x, strlen(items[i*2]));
+ }
+ 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[i*2], items[i*2 + 1], i, i == choice);
+ wnoutrefresh(menu);
+
+ if (menu_height < item_no) {
+ wattrset(dialog, darrow_attr);
+ wmove(dialog, box_y + menu_height + 1, box_x + tag_x + 1);
+ waddch(dialog, ACS_DARROW);
+ wmove(dialog, box_y + menu_height + 1, box_x + tag_x + 2);
+ waddstr(dialog,"(+)");
+ }
+
+ x = width/2-11;
+ y = height-2;
+ print_button(dialog, "Cancel", y, x+14, FALSE);
+ print_button(dialog, " OK ", y, x, TRUE);
+ wrefresh(dialog);
+
+ while (key != ESC) {
+ key = wgetch(dialog);
+ /* Check if key pressed matches first character of any item tag in menu */
+ for (i = 0; i < max_choice; i++)
+ if (toupper(key) == toupper(items[(scrolli+i)*2][0]))
+ break;
+/* i = (choice+scrolli+1) % max_choice ;
+ while (i != choice+scrolli) {
+ if (toupper(key) == toupper(items[i*2][0]))
+ break;
+ i = (i + 1) % max_choice;
+ }
+ */
+
+ 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 (scrolli) {
+#ifdef BROKEN_WSCRL
+ /* wscrl() in ncurses 1.8.1 seems to be broken, causing a segmentation
+ violation when scrolling windows of height = 4, so scrolling is not
+ used for now */
+ scrolli--;
+ getyx(dialog, cur_y, cur_x); /* Save cursor position */
+ /* Reprint menu to scroll down */
+ for (i = 0; i < max_choice; i++)
+ print_item(menu, items[(scrolli+i)*2], items[(scrolli+i)*2 + 1], i, i == choice);
+
+#else
+
+ /* 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[scrolli*2], items[scrolli*2 + 1], 0, FALSE);
+ scrollok(menu, TRUE);
+ wscrl(menu, -1);
+ scrollok(menu, FALSE);
+ }
+ scrolli--;
+ print_item(menu, items[scrolli*2], items[scrolli*2 + 1], 0, TRUE);
+#endif
+ wnoutrefresh(menu);
+
+ /* print the up/down arrows */
+ wmove(dialog, box_y, box_x + tag_x + 1);
+ wattrset(dialog, scrolli ? uarrow_attr : menubox_attr);
+ waddch(dialog, scrolli ? ACS_UARROW : ACS_HLINE);
+ wmove(dialog, box_y, box_x + tag_x + 2);
+ waddch(dialog, scrolli ? '(' : ACS_HLINE);
+ wmove(dialog, box_y, box_x + tag_x + 3);
+ waddch(dialog, scrolli ? '-' : ACS_HLINE);
+ wmove(dialog, box_y, box_x + tag_x + 4);
+ waddch(dialog, scrolli ? ')' : ACS_HLINE);
+ wattrset(dialog, darrow_attr);
+ wmove(dialog, box_y + menu_height + 1, box_x + tag_x + 1);
+ waddch(dialog, ACS_DARROW);
+ wmove(dialog, box_y + menu_height + 1, box_x + tag_x + 2);
+ waddstr(dialog,"(+)");
+ wmove(dialog, cur_y, cur_x); /* Restore cursor position */
+ wrefresh(dialog);
+ }
+ continue; /* wait for another key press */
+ }
+ else
+ i = choice - 1;
+ }
+ else if (key == KEY_DOWN || key == '+')
+ if (choice == max_choice - 1) {
+ if (scrolli+choice < item_no-1) {
+#ifdef BROKEN_WSCRL
+ /* wscrl() in ncurses 1.8.1 seems to be broken, causing a segmentation
+ violation when scrolling windows of height = 4, so scrolling is not
+ used for now */
+ scrolli++;
+ getyx(dialog, cur_y, cur_x); /* Save cursor position */
+ /* Reprint menu to scroll up */
+ for (i = 0; i < max_choice; i++)
+ print_item(menu, items[(scrolli+i)*2], items[(scrolli+i)*2 + 1], i, i == choice);
+
+#else
+
+ /* 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[(scrolli+max_choice-1)*2], items[(scrolli+max_choice-1)*2 + 1], max_choice-1, FALSE);
+ scrollok(menu, TRUE);
+ scroll(menu);
+ scrollok(menu, FALSE);
+ }
+ scrolli++;
+ print_item(menu, items[(scrolli+max_choice-1)*2], items[(scrolli+max_choice-1)*2 + 1], max_choice-1, TRUE);
+#endif
+ wnoutrefresh(menu);
+
+ /* print the up/down arrows */
+ wattrset(dialog, uarrow_attr);
+ wmove(dialog, box_y, box_x + tag_x + 1);
+ waddch(dialog, ACS_UARROW);
+ wmove(dialog, box_y, box_x + tag_x + 2);
+ waddstr(dialog,"(-)");
+ wmove(dialog, box_y + menu_height + 1, box_x + tag_x + 1);
+ wattrset(dialog, scrolli+choice < item_no-1 ? darrow_attr : menubox_border_attr);
+ waddch(dialog, scrolli+choice < item_no-1 ? ACS_DARROW : ACS_HLINE);
+ wmove(dialog, box_y + menu_height + 1, box_x + tag_x + 2);
+ waddch(dialog, scrolli+choice < item_no-1 ? '(' : ACS_HLINE);
+ wmove(dialog, box_y + menu_height + 1, box_x + tag_x + 3);
+ waddch(dialog, scrolli+choice < item_no-1 ? '+' : ACS_HLINE);
+ wmove(dialog, box_y + menu_height + 1, box_x + tag_x + 4);
+ waddch(dialog, scrolli+choice < item_no-1 ? ')' : ACS_HLINE);
+ wmove(dialog, cur_y, cur_x); /* Restore cursor position */
+ 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[(scrolli+choice)*2], items[(scrolli+choice)*2 + 1], choice, FALSE);
+
+ /* Highlight new item */
+ choice = i;
+ print_item(menu, items[(scrolli+choice)*2], items[(scrolli+choice)*2 + 1], choice, TRUE);
+ wnoutrefresh(menu);
+ wmove(dialog, cur_y, cur_x); /* Restore cursor to previous position */
+ wrefresh(dialog);
+ }
+ continue; /* wait for another key press */
+ }
+
+ switch (key) {
+ case 'O':
+ case 'o':
+ delwin(dialog);
+ fprintf(stderr, items[(scrolli+choice)*2]);
+ return 0;
+ case 'C':
+ case 'c':
+ delwin(dialog);
+ return 1;
+ case TAB:
+ case KEY_LEFT:
+ case KEY_RIGHT:
+ if (!button) {
+ button = 1; /* Indicates "Cancel" button is selected */
+ print_button(dialog, " OK ", y, x, FALSE);
+ print_button(dialog, "Cancel", y, x+14, TRUE);
+ }
+ else {
+ button = 0; /* Indicates "OK" button is selected */
+ print_button(dialog, "Cancel", y, x+14, FALSE);
+ print_button(dialog, " OK ", y, x, TRUE);
+ }
+ wrefresh(dialog);
+ break;
+ case ' ':
+ case '\n':
+ delwin(dialog);
+ if (!button)
+ fprintf(stderr, items[(scrolli+choice)*2]);
+ return button;
+ case ESC:
+ break;
+ }
+ }
+
+ delwin(dialog);
+ return -1; /* ESC pressed */
+}
+/* End of dialog_menu() */
+
+
+/*
+ * Print menu item
+ */
+static void print_item(WINDOW *win, char *tag, char *item, int choice, int selected)
+{
+ 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);
+}
+/* End of print_item() */