nesemu/debugger/dialog.c

//
// Created by william on 1/7/24.
//

#include <string.h>
#include "dialog.h"

#define DIALOG_KEY_CONFIRM 10
#define DIALOG_KEY_EXIT 27
#define DIALOG_KEY_DELETE 127
#define DIALOG_KEY_DIGIT_MIN 48
#define DIALOG_KEY_DIGIT_MAX 57
#define DIALOG_KEY_ALPHA_MIN 97
#define DIALOG_KEY_ALPHA_MAX 102

Dialog dialog_create(char *message) {
    Dialog dialog;

    int termHeight = getmaxy(stdscr);
    int termWidth = getmaxx(stdscr);

    int height = 3;
    int width = (int) strlen(message) + 2;
    if (width % 2 == 1) {
        width += 1;
    }

    int y = termHeight / 2 - (height / 2);
    int x = termWidth / 2 - (width / 2);

    WINDOW *window = newwin(height, width, y, x);
    box(window, 0, 0);

    mvwprintw(window, 0, 1, "%s", message);
    wmove(window, 1, 1);

    dialog.panel = new_panel(window);

    return dialog;
}

address dialog_get_address(Dialog *dialog, bool *cancelled) {
    int input_length = 0;
    address out = 0;

    int keycode;
    while ((keycode = wgetch(dialog->panel->win)) != DIALOG_KEY_CONFIRM) {
        if (keycode == DIALOG_KEY_EXIT) {
            *cancelled = true;
            return 0;
        }

        if (input_length > 0 && keycode == DIALOG_KEY_DELETE) {
            int offset = 16 - (4 * input_length);
            address mask = 0xf << offset;
            out &= ~mask;

            input_length--;
            mvwprintw(dialog->panel->win, 1, 1 + input_length, " ");
            wmove(dialog->panel->win, 1, 1 + input_length);
        }

        if (input_length < 4 && keycode >= DIALOG_KEY_DIGIT_MIN && keycode <= DIALOG_KEY_ALPHA_MAX) {
            int digit = keycode - DIALOG_KEY_DIGIT_MIN; // 0-9
            if (digit > 9) {
                if (keycode >= DIALOG_KEY_ALPHA_MIN) { // A-F
                    digit -= DIALOG_KEY_ALPHA_MIN - DIALOG_KEY_DIGIT_MAX - 1;
                } else {
                    // Anything else
                    continue;
                }
            }

            int offset = 12 - (4 * input_length);
            out += digit << offset;

            mvwprintw(dialog->panel->win, 1, 1 + input_length, "%c", keycode);

            input_length++;
        }
    }

    return out;
}

void dialog_remove(Dialog *dialog) {
    del_panel(dialog->panel);
}