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|
use iced::widget::{column, container, row, slider, text};
use iced::{
gradient, Alignment, Background, BorderRadius, Color, Element, Length,
Radians, Sandbox, Settings,
};
pub fn main() -> iced::Result {
Gradient::run(Settings::default())
}
struct Gradient {
first: Color,
second: Color,
angle: f32,
}
#[derive(Debug, Clone, Copy)]
enum Message {
FirstChanged(Color),
SecondChanged(Color),
AngleChanged(f32),
}
impl Sandbox for Gradient {
type Message = Message;
fn new() -> Self {
let first = Color::new(0.2784314, 0.0627451, 0.4117647, 1.0);
let second = Color::new(0.1882353, 0.772549, 0.8235294, 1.0);
Self {
first,
second,
angle: 0.0,
}
}
fn title(&self) -> String {
String::from("Color gradient")
}
fn update(&mut self, message: Message) {
match message {
Message::FirstChanged(color) => self.first = color,
Message::SecondChanged(color) => self.second = color,
Message::AngleChanged(angle) => self.angle = angle,
}
}
fn view(&self) -> Element<Message> {
let first = self.first;
let second = self.second;
let angle = self.angle;
let gradient_box = container(text(""))
.width(Length::Fill)
.height(Length::Fill)
.center_x()
.center_y()
.style(move |_: &_| {
let gradient = gradient::Linear::new(Radians(angle))
.add_stop(0.0, first)
.add_stop(1.0, second)
.into();
container::Appearance {
text_color: None,
background: Some(Background::Gradient(gradient)),
border_radius: BorderRadius::default(),
border_width: 0.0,
border_color: Color::new(0.0, 0.0, 0.0, 0.0),
}
});
let range = 0.0..=1.0;
let l = self.first;
let r = self.second;
let first_color_picker = row![
text("First").width(64),
slider(range.clone(), l.r, move |v| {
Message::FirstChanged(Color::new(v, l.g, l.b, l.a))
})
.step(0.01),
slider(range.clone(), l.g, move |v| {
Message::FirstChanged(Color::new(l.r, v, l.b, l.a))
})
.step(0.01),
slider(range.clone(), l.b, move |v| {
Message::FirstChanged(Color::new(l.r, l.g, v, l.a))
})
.step(0.01),
]
.spacing(8)
.padding(8)
.align_items(Alignment::Center);
let second_color_picker = row![
text("Second").width(64),
slider(range.clone(), r.r, move |v| {
Message::SecondChanged(Color::new(v, r.g, r.b, r.a))
})
.step(0.01),
slider(range.clone(), r.g, move |v| {
Message::SecondChanged(Color::new(r.r, v, r.b, r.a))
})
.step(0.01),
slider(range.clone(), r.b, move |v| {
Message::SecondChanged(Color::new(r.r, r.g, v, r.a))
})
.step(0.01),
]
.spacing(8)
.padding(8)
.align_items(Alignment::Center);
let angle_picker = row![
text("Angle").width(64),
slider(0.0..=std::f32::consts::PI * 2.0, self.angle, move |v| {
Message::AngleChanged(v)
})
.step(0.01)
]
.spacing(8)
.padding(8)
.align_items(Alignment::Center);
column![
first_color_picker,
second_color_picker,
angle_picker,
gradient_box
]
.into()
}
}
|
