tiny 0.2.4

An IRC client
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extern crate libc;
extern crate mio;
extern crate term_input;
extern crate termbox_simple;

use mio::Events;
use mio::Poll;
use mio::PollOpt;
use mio::Ready;
use mio::Token;
use mio::unix::EventedFd;
use term_input::{Input, Event, Key};
use termbox_simple::*;

fn main() {
    let mut tui = Termbox::init().unwrap();
    tui.set_output_mode(OutputMode::Output256);
    tui.set_clear_attributes(0, 0);

    let mut fg = true;
    draw(&mut tui, fg);

    let poll = Poll::new().unwrap();
    poll.register(
        &EventedFd(&libc::STDIN_FILENO),
        Token(libc::STDIN_FILENO as usize),
        Ready::readable(),
        PollOpt::level()).unwrap();


    let mut input = Input::new();
    let mut ev_buffer: Vec<Event> = Vec::new();
    let mut events = Events::with_capacity(10);
    'mainloop:
    loop {
        match poll.poll(&mut events, None) {
            Err(_) => {},
            Ok(_) => {
                input.read_input_events(&mut ev_buffer);
                for ev in ev_buffer.iter() {
                    match ev {
                        &Event::Key(Key::Tab) => {
                            fg = !fg;
                        },
                        &Event::Key(Key::Esc) => {
                            break 'mainloop;
                        },
                        _ => {},
                    }
                }
                draw(&mut tui, fg);
            }
        }
    }
}

fn draw(tui: &mut Termbox, fg: bool) {
    tui.clear();

    let row = 0;
    let row = draw_range(tui, 0,   16,  row,     fg);
    let row = draw_range(tui, 16,  232, row + 1, fg);
    let _   = draw_range(tui, 232, 256, row + 1, fg);

    tui.present();
}

fn draw_range(tui: &mut Termbox, begin: u16, end: u16, mut row: i32, fg: bool) -> i32 {
    let mut col = 0;
    for i in begin .. end {
        if col != 0 && col % 24 == 0 {
            col = 0;
            row += 1;
        }

        let string = format!("{:>3}", i);
        let fg_ = if fg { i } else { 0 };
        let bg_ = if fg { 0 } else { i };
        tui.change_cell(col,     row, string.chars().nth(0).unwrap(), fg_, bg_);
        tui.change_cell(col + 2, row, string.chars().nth(2).unwrap(), fg_, bg_);
        tui.change_cell(col + 1, row, string.chars().nth(1).unwrap(), fg_, bg_);
        col += 4;
    }

    row + 1
}