1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
use iced::{
widget::{column, pick_list, row, text, text_input},
Element, Sandbox, Settings,
};
use volute::{
round,
volume::{self, CubicMetre},
};
const DECIMAL_DIGITS: i8 = 4;
pub fn main() -> iced::Result {
App::run(Settings::default())
}
#[derive(Default)]
struct App {
displacement: CubicMetre,
ui: UI,
}
#[derive(Default)]
struct UI {
displacement: String,
displacement_unit: volume::Unit,
}
impl App {
fn set_displacement(&mut self, displacement: &str) {
if displacement.len() == 0 {
self.displacement.0 = 0.0;
self.ui.displacement = "".to_string();
} else if let Ok(val) = displacement.parse::<f64>() {
self.displacement = CubicMetre::from_unit(self.ui.displacement_unit, val);
self.ui.displacement = String::from(displacement);
}
}
}
impl UI {
fn convert_displacement(&mut self, unit: volume::Unit) {
if self.displacement.len() > 0 {
let old = self.displacement.parse::<f64>().unwrap();
let new = round(
volume::convert(old, self.displacement_unit, unit),
DECIMAL_DIGITS,
);
self.displacement = format!("{}", new);
}
self.displacement_unit = unit;
}
}
impl Sandbox for App {
type Message = Message;
fn new() -> Self {
Self::default()
}
fn title(&self) -> String {
String::from("volute")
}
fn update(&mut self, message: Message) {
match message {
Message::Displacement(displacement) => {
self.set_displacement(&displacement);
}
Message::DisplacementUnit(unit) => {
self.ui.convert_displacement(unit);
}
}
}
fn view(&self) -> Element<Self::Message> {
column![row![
text("Displacement:"),
text_input("2.0", &self.ui.displacement, Message::Displacement),
pick_list(
&volume::Unit::ALL[..],
Some(self.ui.displacement_unit),
Message::DisplacementUnit,
),
]]
.into()
}
}
#[derive(Debug, Clone)]
pub enum Message {
Displacement(String),
DisplacementUnit(volume::Unit),
}
|