add hello world example
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3 changed files with 121 additions and 1 deletions
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@ -1,6 +1,7 @@
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[workspace]
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members = [
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"lib-nested-core",
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"lib-nested-tty"
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"lib-nested-tty",
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"examples/tty-01-hello"
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]
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18
examples/tty-01-hello/Cargo.toml
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18
examples/tty-01-hello/Cargo.toml
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[package]
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name = "tty-01-hello"
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version = "0.1.0"
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edition = "2021"
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# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
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[dependencies]
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r3vi = { path = "../../../lib-r3vi" }
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nested = { path = "../../lib-nested-core" }
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nested-tty = { path = "../../lib-nested-tty" }
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termion = "*"
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cgmath = "*"
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[dependencies.async-std]
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version = "1.9.0"
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features = ["unstable", "attributes"]
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101
examples/tty-01-hello/src/main.rs
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101
examples/tty-01-hello/src/main.rs
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extern crate r3vi;
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extern crate nested;
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extern crate nested_tty;
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extern crate termion;
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extern crate cgmath;
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use {
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r3vi::view::{
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ViewPort,
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port::UpdateTask
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},
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nested::{
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tree::{NestedNode},
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type_system::{Context, ReprTree}
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},
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nested_tty::{
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Terminal, TerminalView, TerminalEvent,
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TerminalStyle,
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TerminalCompositor
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},
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cgmath::Vector2,
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termion::event::{Event, Key},
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std::sync::{Arc, RwLock}
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};
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/* this task handles all terminal events (e.g. key press, resize)
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*/
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pub async fn event_loop(
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mut term: Terminal,
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term_port: ViewPort<dyn TerminalView>,
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portmutex: Arc<RwLock<()>>
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) {
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loop {
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let ev = term.next_event().await;
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let _l = portmutex.write().unwrap();
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if ev == TerminalEvent::Input(Event::Key(Key::Ctrl('d'))) {
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break;
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}
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term_port.update();
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}
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}
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/* this task will continuously pull forward
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* all notifications which are influencing
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* the view in `term_port`
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*/
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pub async fn update_loop(
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term_port: ViewPort<dyn TerminalView>,
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portmutex: Arc<RwLock<()>>
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) {
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loop {
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{
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let _l = portmutex.write().unwrap();
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term_port.update();
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}
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async_std::task::sleep(std::time::Duration::from_millis(500)).await;
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}
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}
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#[async_std::main]
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async fn main() {
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/* initialize our terminal
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*/
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let term_port = ViewPort::new();
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let mut term = Terminal::new(term_port.outer());
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let term_writer = term.get_writer();
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let portmutex = Arc::new(RwLock::new(()));
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/* spawn event-handling & updating tasks
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*/
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async_std::task::spawn(
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update_loop(term_port.clone(), portmutex.clone()));
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async_std::task::spawn(
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event_loop(term, term_port.clone(), portmutex.clone()));
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/* populate the view in `term_port`
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*/
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let compositor = TerminalCompositor::new(term_port.inner());
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compositor.write().unwrap().push(
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nested_tty::make_label("test")
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.offset(Vector2::new(7,2)));
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compositor.write().unwrap().push(
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nested_tty::make_label("Hello World")
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.map_item(|p,a|
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a.add_style_back(
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TerminalStyle::fg_color(( (25*p.x%255) as u8, 200, 0 )) ))
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.offset(Vector2::new(5, 3)));
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/* write the changes in the view of `term_port` to the terminal
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*/
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term_writer.show().await.expect("output error!");
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}
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