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use crate::layout;
use crate::renderer;
use crate::{Color, Element, Layout, Length, Point, Rectangle, Size, Widget};
pub use iced_style::rule::{FillMode, Style, StyleSheet};
#[allow(missing_debug_implementations)]
pub struct Rule<'a> {
width: Length,
height: Length,
is_horizontal: bool,
style_sheet: Box<dyn StyleSheet + 'a>,
}
impl<'a> Rule<'a> {
pub fn horizontal(height: u16) -> Self {
Rule {
width: Length::Fill,
height: Length::Units(height),
is_horizontal: true,
style_sheet: Default::default(),
}
}
pub fn vertical(width: u16) -> Self {
Rule {
width: Length::from(Length::Units(width)),
height: Length::Fill,
is_horizontal: false,
style_sheet: Default::default(),
}
}
pub fn style(
mut self,
style_sheet: impl Into<Box<dyn StyleSheet + 'a>>,
) -> Self {
self.style_sheet = style_sheet.into();
self
}
}
impl<'a, Message, Renderer> Widget<Message, Renderer> for Rule<'a>
where
Renderer: crate::Renderer,
{
fn width(&self) -> Length {
self.width
}
fn height(&self) -> Length {
self.height
}
fn layout(
&self,
_renderer: &Renderer,
limits: &layout::Limits,
) -> layout::Node {
let limits = limits.width(self.width).height(self.height);
layout::Node::new(limits.resolve(Size::ZERO))
}
fn draw(
&self,
renderer: &mut Renderer,
_style: &renderer::Style,
layout: Layout<'_>,
_cursor_position: Point,
_viewport: &Rectangle,
) {
let bounds = layout.bounds();
let style = self.style_sheet.style();
let bounds = if self.is_horizontal {
let line_y = (bounds.y + (bounds.height / 2.0)
- (style.width as f32 / 2.0))
.round();
let (offset, line_width) = style.fill_mode.fill(bounds.width);
let line_x = bounds.x + offset;
Rectangle {
x: line_x,
y: line_y,
width: line_width,
height: style.width as f32,
}
} else {
let line_x = (bounds.x + (bounds.width / 2.0)
- (style.width as f32 / 2.0))
.round();
let (offset, line_height) = style.fill_mode.fill(bounds.height);
let line_y = bounds.y + offset;
Rectangle {
x: line_x,
y: line_y,
width: style.width as f32,
height: line_height,
}
};
renderer.fill_quad(
renderer::Quad {
bounds,
border_radius: style.radius,
border_width: 0.0,
border_color: Color::TRANSPARENT,
},
style.color,
);
}
}
impl<'a, Message, Renderer> From<Rule<'a>> for Element<'a, Message, Renderer>
where
Renderer: 'a + crate::Renderer,
Message: 'a,
{
fn from(rule: Rule<'a>) -> Element<'a, Message, Renderer> {
Element::new(rule)
}
}