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|
use iced::executor;
use iced::widget::{column, container, row, text, vertical_rule};
use iced::{
Application, Command, Element, Length, Settings, Subscription, Theme,
};
pub fn main() -> iced::Result {
Layout::run(Settings::default())
}
#[derive(Debug)]
struct Layout {
previous: Vec<Example>,
current: Example,
next: Vec<Example>,
}
#[derive(Debug, Clone, Copy)]
enum Message {
Next,
Previous,
}
impl Application for Layout {
type Message = Message;
type Theme = Theme;
type Executor = executor::Default;
type Flags = ();
fn new(_flags: Self::Flags) -> (Self, Command<Message>) {
(
Self {
previous: vec![],
current: Example::Centered,
next: vec![Example::NestedQuotes],
},
Command::none(),
)
}
fn title(&self) -> String {
String::from("Counter - Iced")
}
fn update(&mut self, message: Self::Message) -> Command<Message> {
match message {
Message::Next => {
if !self.next.is_empty() {
let previous = std::mem::replace(
&mut self.current,
self.next.remove(0),
);
self.previous.push(previous);
}
}
Message::Previous => {
if let Some(previous) = self.previous.pop() {
let next = std::mem::replace(&mut self.current, previous);
self.next.insert(0, next);
}
}
}
Command::none()
}
fn subscription(&self) -> Subscription<Message> {
use iced::event::{self, Event};
use iced::keyboard;
event::listen_with(|event, status| match event {
Event::Keyboard(keyboard::Event::KeyReleased {
key_code, ..
}) if status == event::Status::Ignored => match key_code {
keyboard::KeyCode::Left => Some(Message::Previous),
keyboard::KeyCode::Right => Some(Message::Next),
_ => None,
},
_ => None,
})
}
fn view(&self) -> Element<Message> {
self.current.view()
}
}
#[derive(Debug)]
enum Example {
Centered,
NestedQuotes,
}
impl Example {
fn view(&self) -> Element<Message> {
match self {
Self::Centered => container(text("I am centered!").size(50))
.width(Length::Fill)
.height(Length::Fill)
.center_x()
.center_y()
.into(),
Self::NestedQuotes => container((1..5).fold(
column![text("Original text")].padding(10),
|quotes, i| {
column![
row![vertical_rule(2), quotes].height(Length::Shrink),
text(format!("Reply {i}"))
]
.spacing(10)
.padding(10)
},
))
.width(Length::Fill)
.height(Length::Fill)
.center_x()
.center_y()
.into(),
}
}
}
|
