117 lines
2.2 KiB
C++
117 lines
2.2 KiB
C++
#include <stdio.h>
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#include <ncurses.h> // sudo apt-get install libncurses5-dev
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#include <vector>
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#include <string>
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#include <iostream>
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#include <sys/ioctl.h>
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#include <unistd.h>
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#define width 30
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#define height 10
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WINDOW *win_menu;
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std::vector<std::string> choices = {
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"Choice 1",
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"Choice 2",
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"Choice 3",
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"Choice 4",
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"Exit",
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};
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void init_win(WINDOW*& win)
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{
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struct winsize size;
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if (ioctl(0, TIOCGWINSZ, (char *) &size) < 0)
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throw std::runtime_error("TIOCGWINSZ error");
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int start_x = (size.ws_col - width);
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int start_y = (size.ws_row - height);
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if(start_x % 2)
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start_x++;
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if(start_y % 2)
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start_y++;
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start_x /= 2;
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start_y /= 2;
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win = newwin(height, width, start_y, start_x);
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keypad(win, TRUE);
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refresh();
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}
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void print_menu(WINDOW *win_menu, int highlight)
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{
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int x, y, i;
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x = 2;
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y = 2;
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box(win_menu, 0, 0);
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for(i = 0; i < choices.size(); ++i)
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{ if(highlight == i + 1) /* High light the present choice */
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{ wattron(win_menu, A_REVERSE);
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mvwprintw(win_menu, y, x, "%s", choices[i].c_str());
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wattroff(win_menu, A_REVERSE);
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}
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else
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mvwprintw(win_menu, y, x, "%s", choices[i].c_str());
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++y;
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}
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wrefresh(win_menu);
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}
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int main()
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{
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int highlight = 1;
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int choice = 0;
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int c;
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initscr();
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start_color();
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curs_set(0); // 0: invisible, 1: normal, 2: very visible
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clear();
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noecho();
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cbreak(); /* Line buffering disabled. pass on everything */
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init_win(win_menu);
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mvprintw(0, 0, "Use arrow keys to go up and down, Press enter to select a choice");
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print_menu(win_menu, highlight);
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refresh();
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while(1)
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{ c = wgetch(win_menu);
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switch(c)
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{ case KEY_UP:
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if(highlight == 1)
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highlight = choices.size();
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else
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--highlight;
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break;
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case KEY_DOWN:
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if(highlight == choices.size())
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highlight = 1;
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else
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++highlight;
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break;
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case 10:
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choice = highlight;
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break;
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default:
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mvprintw(24, 0, "Charcter pressed is = %3d Hopefully it can be printed as '%c'", c, c);
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refresh();
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break;
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}
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print_menu(win_menu, highlight);
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if(choice != 0) /* User did a choice come out of the infinite loop */
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break;
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}
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//mvprintw(23, 0, "You chose choice %d with choice string %s\n", choice, choices[choice - 1].c_str());
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clrtoeol();
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refresh();
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endwin();
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return 0;
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}
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