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use iced::event::{self, Event};
use iced::widget::{Column, button, center, checkbox, text};
use iced::window;
use iced::{Center, Element, Fill, Subscription, Task};
pub fn main() -> iced::Result {
iced::application("Events - Iced", Events::update, Events::view)
.subscription(Events::subscription)
.exit_on_close_request(false)
.run()
}
#[derive(Debug, Default)]
struct Events {
last: Vec<Event>,
enabled: bool,
}
#[derive(Debug, Clone)]
enum Message {
EventOccurred(Event),
Toggled(bool),
Exit,
}
impl Events {
fn update(&mut self, message: Message) -> Task<Message> {
match message {
Message::EventOccurred(event) if self.enabled => {
self.last.push(event);
if self.last.len() > 5 {
let _ = self.last.remove(0);
}
Task::none()
}
Message::EventOccurred(event) => {
if let Event::Window(window::Event::CloseRequested) = event {
window::get_latest().and_then(window::close)
} else {
Task::none()
}
}
Message::Toggled(enabled) => {
self.enabled = enabled;
Task::none()
}
Message::Exit => window::get_latest().and_then(window::close),
}
}
fn subscription(&self) -> Subscription<Message> {
event::listen().map(Message::EventOccurred)
}
fn view(&self) -> Element<Message> {
let events = Column::with_children(
self.last
.iter()
.map(|event| text!("{event:?}").size(40))
.map(Element::from),
);
let toggle = checkbox("Listen to runtime events", self.enabled)
.on_toggle(Message::Toggled);
let exit = button(text("Exit").width(Fill).align_x(Center))
.width(100)
.padding(10)
.on_press(Message::Exit);
let content = Column::new()
.align_x(Center)
.spacing(20)
.push(events)
.push(toggle)
.push(exit);
center(content).into()
}
}
|
