Added an Icon widget to native.

native/src/widget.rs

@@ -24,6 +24,7 @@ pub mod button;
 pub mod checkbox;
 pub mod column;
 pub mod container;
+pub mod icon;
 pub mod image;
 pub mod radio;
 pub mod row;
@@ -41,6 +42,8 @@ pub use column::Column;
 #[doc(no_inline)]
 pub use container::Container;
 #[doc(no_inline)]
+pub use icon::Icon;
+#[doc(no_inline)]
 pub use image::Image;
 #[doc(no_inline)]
 pub use radio::Radio;

native/src/widget/icon.rs

@@ -0,0 +1,103 @@
+//! Display an icon.
+use crate::{layout, Element, Hasher, Layout, Length, Point, Rectangle, Widget};
+
+use std::hash::Hash;
+use std::path::{Path, PathBuf};
+
+/// A simple icon_loader widget.
+#[derive(Debug, Clone)]
+pub struct Icon {
+    path: PathBuf,
+    size: Length,
+}
+
+impl Icon {
+    /// Create a new [`Icon`] from the file at `path`.
+    ///
+    /// [`Icon`]: struct.Icon.html
+    pub fn new(path: impl Into<PathBuf>) -> Self {
+        Icon {
+            path: path.into(),
+            size: Length::Fill,
+        }
+    }
+
+    /// Sets the size of the [`Icon`].
+    ///
+    /// [`Icon`]: struct.Icon.html
+    pub fn size(mut self, size: Length) -> Self {
+        self.size = size;
+        self
+    }
+}
+
+impl<Message, Renderer> Widget<Message, Renderer> for Icon
+where
+    Renderer: self::Renderer,
+{
+    fn width(&self) -> Length {
+        self.size
+    }
+
+    fn height(&self) -> Length {
+        self.size
+    }
+
+    fn layout(&self, _: &Renderer, limits: &layout::Limits) -> layout::Node {
+        let mut size = limits.width(self.size).height(self.size).max();
+
+        if size.width > size.height {
+            size.width = size.height;
+        } else if size.width < size.height {
+            size.height = size.width;
+        }
+
+        layout::Node::new(size)
+    }
+
+    fn draw(
+        &self,
+        renderer: &mut Renderer,
+        layout: Layout<'_>,
+        _cursor_position: Point,
+    ) -> Renderer::Output {
+        let bounds = layout.bounds();
+
+        renderer.draw(
+            bounds,
+            self.path.as_path(),
+        )
+    }
+
+    fn hash_layout(&self, state: &mut Hasher) {
+        self.size.hash(state);
+    }
+}
+
+/// The renderer of an [`Icon`].
+///
+/// Your [renderer] will need to implement this trait before being
+/// able to use [`Icon`] in your [`UserInterface`].
+///
+/// [`Icon`]: struct.Icon.html
+/// [renderer]: ../../renderer/index.html
+/// [`UserInterface`]: ../../struct.UserInterface.html
+pub trait Renderer: crate::Renderer {
+    /// Draws an [`Icon`].
+    ///
+    /// [`Icon`]: struct.Icon.html
+    fn draw(
+        &mut self,
+        bounds: Rectangle,
+        path: &Path,
+    ) -> Self::Output;
+}
+
+impl<'a, Message, Renderer> From<Icon> for Element<'a, Message, Renderer>
+where
+    Renderer: self::Renderer,
+{
+    fn from(icon: Icon) -> Element<'a, Message, Renderer> {
+        Element::new(icon)
+    }
+}