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