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//! Display images in your user interface.
use crate::{Element, Hasher, Layout, MouseCursor, Node, Point, Widget};
use std::hash::Hash;
pub use iced_core::Image;
impl<I, Message, Renderer> Widget<Message, Renderer> for Image<I>
where
Renderer: self::Renderer<I>,
I: Clone,
{
fn node(&self, renderer: &mut Renderer) -> Node {
renderer.node(&self)
}
fn draw(
&self,
renderer: &mut Renderer,
layout: Layout<'_>,
_cursor_position: Point,
) -> MouseCursor {
renderer.draw(&self, layout);
MouseCursor::OutOfBounds
}
fn hash_layout(&self, state: &mut Hasher) {
self.width.hash(state);
self.height.hash(state);
self.align_self.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<I> {
/// 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 node(&mut self, image: &Image<I>) -> Node;
/// Draws an [`Image`].
///
/// [`Image`]: struct.Image.html
fn draw(&mut self, image: &Image<I>, layout: Layout<'_>);
}
impl<'a, I, Message, Renderer> From<Image<I>> for Element<'a, Message, Renderer>
where
Renderer: self::Renderer<I>,
I: Clone + 'a,
{
fn from(image: Image<I>) -> Element<'a, Message, Renderer> {
Element::new(image)
}
}
|
