tengri/examples/mode_00.rs

//! Mode 00: Direct draw, direct control

use ::tengri::{
    *,
    lang::*,
    crossterm::event::{KeyEvent, Event::*, KeyCode::*},
    ratatui::style::Color,
};

tui_app!(State {
    /** User-controllable value. */
    counter:  usize,
});

tui_view!(self: State {
    thunk(|to: &mut Tui|{
        let _ = "DEMO [MODE 00]".align_sw().draw(to);
        let _ = ShowSize.align_se().draw(to);
        let _ = format!("Counter:\n{}", self.counter).align_c().draw(to);
        Ok(Some(to.area()))
    })
});

tui_keys!(self: State, input {
    Ok(if let Key(KeyEvent { code, .. }) = input.0 {
        match code {
            Up | Right  => {
                self.counter = (self.counter + 1) % 10;
                ()
            },
            Down | Left => {
                self.counter = if self.counter > 0 { self.counter - 1 } else { 10 - 1 };
                ()
            },
            _ => {}
        }
    })
});