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|
use iced::{
canvas, executor, Application, Canvas, Color, Command, Element, Length,
Point, Settings,
};
pub fn main() {
Clock::run(Settings::default())
}
struct Clock {
now: LocalTime,
clock: canvas::layer::Cached<LocalTime>,
}
#[derive(Debug, Clone, Copy)]
enum Message {
Tick(chrono::DateTime<chrono::Local>),
}
impl Application for Clock {
type Executor = executor::Default;
type Message = Message;
fn new() -> (Self, Command<Message>) {
let now: LocalTime = chrono::Local::now().into();
(
Clock {
now,
clock: canvas::layer::Cached::new(),
},
Command::none(),
)
}
fn title(&self) -> String {
String::from("Clock - Iced")
}
fn update(&mut self, message: Message) -> Command<Message> {
match message {
Message::Tick(local_time) => {
let now = local_time.into();
if now != self.now {
self.now = now;
self.clock.clear();
}
}
}
Command::none()
}
fn view(&mut self) -> Element<Message> {
Canvas::new()
.width(Length::Fill)
.height(Length::Fill)
.push(self.clock.with(&self.now))
.into()
}
}
#[derive(Debug, PartialEq, Eq)]
struct LocalTime {
hour: u32,
minute: u32,
second: u32,
}
impl From<chrono::DateTime<chrono::Local>> for LocalTime {
fn from(date_time: chrono::DateTime<chrono::Local>) -> LocalTime {
use chrono::Timelike;
LocalTime {
hour: date_time.hour(),
minute: date_time.minute(),
second: date_time.second(),
}
}
}
impl canvas::layer::Drawable for LocalTime {
fn draw(&self, frame: &mut canvas::Frame) {
let center = frame.center();
let radius = frame.width().min(frame.height()) as f32 / 2.0;
let mut path = canvas::Path::new();
path.arc(canvas::path::Arc {
center,
radius,
start_angle: 0.0,
end_angle: 360.0 * 2.0 * std::f32::consts::PI,
});
frame.fill(
path,
canvas::Fill::Color(Color::from_rgb8(0x12, 0x93, 0xD8)),
);
fn draw_handle(
n: u32,
total: u32,
length: f32,
path: &mut canvas::Path,
) {
let turns = n as f32 / total as f32;
let t = 2.0 * std::f32::consts::PI * (turns - 0.25);
let x = length * t.cos();
let y = length * t.sin();
path.line_to(Point::new(x, y));
}
let mut path = canvas::Path::new();
path.move_to(center);
draw_handle(self.hour, 12, 0.6 * radius, &mut path);
path.move_to(center);
draw_handle(self.minute, 60, 0.9 * radius, &mut path);
frame.stroke(
path,
canvas::Stroke {
width: 4.0,
color: Color::WHITE,
line_cap: canvas::LineCap::Round,
..canvas::Stroke::default()
},
);
let mut path = canvas::Path::new();
path.move_to(center);
draw_handle(self.second, 60, 0.9 * radius, &mut path);
frame.stroke(
path,
canvas::Stroke {
width: 2.0,
color: Color::WHITE,
line_cap: canvas::LineCap::Round,
..canvas::Stroke::default()
},
);
}
}
|
