graphix-stdlib 0.3.1

A dataflow language for UIs and network programming, standard library
Documentation 
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use tui;
use tui::paragraph;
use tui::block;
use tui::text;
use tui::input_handler;

let long_text = "I have got a lovely bunch of coconuts. Very long text continues here. More text. Even more text. This is a very long paragraph that will need scrolling to see all of it.";
let scroll_y = 0;

let handle_event = |e: Event| -> [`Stop, `Continue] select e {
    `Key(k) => select k.kind {
        `Press => select k.code {
            k@`Up if scroll_y > 0 => {
                scroll_y <- (k ~ scroll_y) - 1;
                `Stop
            },
            k@`Down if scroll_y < 100 => {
                scroll_y <- (k ~ scroll_y) + 1;
                `Stop
            },
            _ => `Continue
        },
        _ => `Continue
    },
    _ => `Continue
};

input_handler(
    #handle: &handle_event,
    &block(
        #border: &`All,
        #title: &line("Scrollable Text"),
        &paragraph(
            #scroll: &{x: 0, y: scroll_y},
            &long_text
        )
    )
)