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//! Display images in your user interface.
use crate::{layout, Element, Hasher, Layout, Point, Widget};
use std::hash::Hash;
pub use iced_core::Image;
impl<Message, Renderer> Widget<Message, Renderer> for Image
where
Renderer: self::Renderer,
{
fn layout(
&self,
renderer: &Renderer,
limits: &layout::Limits,
) -> layout::Node {
renderer.layout(&self, limits)
}
fn draw(
&self,
renderer: &mut Renderer,
layout: Layout<'_>,
_cursor_position: Point,
) -> Renderer::Output {
renderer.draw(&self, layout)
}
fn hash_layout(&self, state: &mut Hasher) {
self.width.hash(state);
self.height.hash(state);
}
}
/// The renderer of an [`Image`].
///
/// Your [renderer] will need to implement this trait before being able to use
/// an [`Image`] in your user interface.
///
/// [`Image`]: struct.Image.html
/// [renderer]: ../../renderer/index.html
pub trait Renderer: crate::Renderer {
/// Creates a [`Node`] for the provided [`Image`].
///
/// You should probably keep the original aspect ratio, if possible.
///
/// [`Node`]: ../../struct.Node.html
/// [`Image`]: struct.Image.html
fn layout(&self, image: &Image, limits: &layout::Limits) -> layout::Node;
/// Draws an [`Image`].
///
/// [`Image`]: struct.Image.html
fn draw(&mut self, image: &Image, layout: Layout<'_>) -> Self::Output;
}
impl<'a, Message, Renderer> From<Image> for Element<'a, Message, Renderer>
where
Renderer: self::Renderer,
{
fn from(image: Image) -> Element<'a, Message, Renderer> {
Element::new(image)
}
}
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