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use crate::layout;
use crate::renderer;
use crate::widget::Tree;
use crate::{Color, Element, Layout, Length, Point, Rectangle, Size, Widget};
use std::ops::RangeInclusive;
pub use iced_style::progress_bar::{Appearance, StyleSheet};
#[allow(missing_debug_implementations)]
pub struct ProgressBar<Renderer>
where
Renderer: crate::Renderer,
Renderer::Theme: StyleSheet,
{
range: RangeInclusive<f32>,
value: f32,
width: Length,
height: Option<Length>,
style: <Renderer::Theme as StyleSheet>::Style,
}
impl<Renderer> ProgressBar<Renderer>
where
Renderer: crate::Renderer,
Renderer::Theme: StyleSheet,
{
pub const DEFAULT_HEIGHT: f32 = 30.0;
pub fn new(range: RangeInclusive<f32>, value: f32) -> Self {
ProgressBar {
value: value.clamp(*range.start(), *range.end()),
range,
width: Length::Fill,
height: None,
style: Default::default(),
}
}
pub fn width(mut self, width: impl Into<Length>) -> Self {
self.width = width.into();
self
}
pub fn height(mut self, height: impl Into<Length>) -> Self {
self.height = Some(height.into());
self
}
pub fn style(
mut self,
style: impl Into<<Renderer::Theme as StyleSheet>::Style>,
) -> Self {
self.style = style.into();
self
}
}
impl<Message, Renderer> Widget<Message, Renderer> for ProgressBar<Renderer>
where
Renderer: crate::Renderer,
Renderer::Theme: StyleSheet,
{
fn width(&self) -> Length {
self.width
}
fn height(&self) -> Length {
self.height.unwrap_or(Length::Fixed(Self::DEFAULT_HEIGHT))
}
fn layout(
&self,
_renderer: &Renderer,
limits: &layout::Limits,
) -> layout::Node {
let limits = limits
.width(self.width)
.height(self.height.unwrap_or(Length::Fixed(Self::DEFAULT_HEIGHT)));
let size = limits.resolve(Size::ZERO);
layout::Node::new(size)
}
fn draw(
&self,
_state: &Tree,
renderer: &mut Renderer,
theme: &Renderer::Theme,
_style: &renderer::Style,
layout: Layout<'_>,
_cursor_position: Point,
_viewport: &Rectangle,
) {
let bounds = layout.bounds();
let (range_start, range_end) = self.range.clone().into_inner();
let active_progress_width = if range_start >= range_end {
0.0
} else {
bounds.width * (self.value - range_start)
/ (range_end - range_start)
};
let style = theme.appearance(&self.style);
renderer.fill_quad(
renderer::Quad {
bounds: Rectangle { ..bounds },
border_radius: style.border_radius.into(),
border_width: 0.0,
border_color: Color::TRANSPARENT,
},
style.background,
);
if active_progress_width > 0.0 {
renderer.fill_quad(
renderer::Quad {
bounds: Rectangle {
width: active_progress_width,
..bounds
},
border_radius: style.border_radius.into(),
border_width: 0.0,
border_color: Color::TRANSPARENT,
},
style.bar,
);
}
}
}
impl<'a, Message, Renderer> From<ProgressBar<Renderer>>
for Element<'a, Message, Renderer>
where
Message: 'a,
Renderer: 'a + crate::Renderer,
Renderer::Theme: StyleSheet,
{
fn from(
progress_bar: ProgressBar<Renderer>,
) -> Element<'a, Message, Renderer> {
Element::new(progress_bar)
}
}