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Annotation of qemu/roms/seabios/tools/kconfig/lxdialog/yesno.c, revision 1.1

1.1     ! root        1: /*
        !             2:  *  yesno.c -- implements the yes/no box
        !             3:  *
        !             4:  *  ORIGINAL AUTHOR: Savio Lam ([email protected])
        !             5:  *  MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap ([email protected])
        !             6:  *
        !             7:  *  This program is free software; you can redistribute it and/or
        !             8:  *  modify it under the terms of the GNU General Public License
        !             9:  *  as published by the Free Software Foundation; either version 2
        !            10:  *  of the License, or (at your option) any later version.
        !            11:  *
        !            12:  *  This program is distributed in the hope that it will be useful,
        !            13:  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            14:  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            15:  *  GNU General Public License for more details.
        !            16:  *
        !            17:  *  You should have received a copy of the GNU General Public License
        !            18:  *  along with this program; if not, write to the Free Software
        !            19:  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
        !            20:  */
        !            21: 
        !            22: #include "dialog.h"
        !            23: 
        !            24: /*
        !            25:  * Display termination buttons
        !            26:  */
        !            27: static void print_buttons(WINDOW * dialog, int height, int width, int selected)
        !            28: {
        !            29:        int x = width / 2 - 10;
        !            30:        int y = height - 2;
        !            31: 
        !            32:        print_button(dialog, gettext(" Yes "), y, x, selected == 0);
        !            33:        print_button(dialog, gettext("  No  "), y, x + 13, selected == 1);
        !            34: 
        !            35:        wmove(dialog, y, x + 1 + 13 * selected);
        !            36:        wrefresh(dialog);
        !            37: }
        !            38: 
        !            39: /*
        !            40:  * Display a dialog box with two buttons - Yes and No
        !            41:  */
        !            42: int dialog_yesno(const char *title, const char *prompt, int height, int width)
        !            43: {
        !            44:        int i, x, y, key = 0, button = 0;
        !            45:        WINDOW *dialog;
        !            46: 
        !            47: do_resize:
        !            48:        if (getmaxy(stdscr) < (height + 4))
        !            49:                return -ERRDISPLAYTOOSMALL;
        !            50:        if (getmaxx(stdscr) < (width + 4))
        !            51:                return -ERRDISPLAYTOOSMALL;
        !            52: 
        !            53:        /* center dialog box on screen */
        !            54:        x = (COLS - width) / 2;
        !            55:        y = (LINES - height) / 2;
        !            56: 
        !            57:        draw_shadow(stdscr, y, x, height, width);
        !            58: 
        !            59:        dialog = newwin(height, width, y, x);
        !            60:        keypad(dialog, TRUE);
        !            61: 
        !            62:        draw_box(dialog, 0, 0, height, width,
        !            63:                 dlg.dialog.atr, dlg.border.atr);
        !            64:        wattrset(dialog, dlg.border.atr);
        !            65:        mvwaddch(dialog, height - 3, 0, ACS_LTEE);
        !            66:        for (i = 0; i < width - 2; i++)
        !            67:                waddch(dialog, ACS_HLINE);
        !            68:        wattrset(dialog, dlg.dialog.atr);
        !            69:        waddch(dialog, ACS_RTEE);
        !            70: 
        !            71:        print_title(dialog, title, width);
        !            72: 
        !            73:        wattrset(dialog, dlg.dialog.atr);
        !            74:        print_autowrap(dialog, prompt, width - 2, 1, 3);
        !            75: 
        !            76:        print_buttons(dialog, height, width, 0);
        !            77: 
        !            78:        while (key != KEY_ESC) {
        !            79:                key = wgetch(dialog);
        !            80:                switch (key) {
        !            81:                case 'Y':
        !            82:                case 'y':
        !            83:                        delwin(dialog);
        !            84:                        return 0;
        !            85:                case 'N':
        !            86:                case 'n':
        !            87:                        delwin(dialog);
        !            88:                        return 1;
        !            89: 
        !            90:                case TAB:
        !            91:                case KEY_LEFT:
        !            92:                case KEY_RIGHT:
        !            93:                        button = ((key == KEY_LEFT ? --button : ++button) < 0) ? 1 : (button > 1 ? 0 : button);
        !            94: 
        !            95:                        print_buttons(dialog, height, width, button);
        !            96:                        wrefresh(dialog);
        !            97:                        break;
        !            98:                case ' ':
        !            99:                case '\n':
        !           100:                        delwin(dialog);
        !           101:                        return button;
        !           102:                case KEY_ESC:
        !           103:                        key = on_key_esc(dialog);
        !           104:                        break;
        !           105:                case KEY_RESIZE:
        !           106:                        delwin(dialog);
        !           107:                        on_key_resize();
        !           108:                        goto do_resize;
        !           109:                }
        !           110:        }
        !           111: 
        !           112:        delwin(dialog);
        !           113:        return key;             /* ESC pressed */
        !           114: }

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