cursive/examples/key_codes.rs
2019-05-20 15:53:22 -07:00

54 lines
1.4 KiB
Rust

use cursive::event::{Event, EventResult};
use cursive::traits::*;
use cursive::{Cursive, Printer};
// This example define a custom view that prints any event it receives.
// This is a handy way to check the input received by cursive.
fn main() {
let mut siv = Cursive::default();
siv.add_layer(KeyCodeView::new(10).full_width().fixed_height(10));
siv.run();
}
// Our view will have a small history of the last events.
struct KeyCodeView {
history: Vec<String>,
size: usize,
}
impl KeyCodeView {
fn new(size: usize) -> Self {
KeyCodeView {
history: Vec::new(),
size,
}
}
}
// Let's implement the `View` trait.
// `View` contains many methods, but only a few are required.
impl View for KeyCodeView {
fn draw(&self, printer: &Printer) {
// We simply draw every event from the history.
for (y, line) in self.history.iter().enumerate() {
printer.print((0, y), line);
}
}
fn on_event(&mut self, event: Event) -> EventResult {
// Each line will be a debug-format of the event.
let line = format!("{:?}", event);
self.history.push(line);
// Keep a fixed-sized history.
while self.history.len() > self.size {
self.history.remove(0);
}
// No need to return any callback.
EventResult::Consumed(None)
}
}