Merge pull request #17 from hecrj/web

Basic web support (core, native, and web crates)

1 files changed, 66 insertions, 0 deletions

diff --git a/native/src/widget/image.rs b/native/src/widget/image.rs
new file mode 100644
index 00000000..81f99acb
--- /dev/null
+++ b/native/src/widget/image.rs
@@ -0,0 +1,66 @@
+//! 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)
+    }
+}