Implement pure version of QRCode widget

graphics/src/widget/pure.rs

@@ -4,3 +4,9 @@ pub mod canvas;
 
 #[cfg(feature = "canvas")]
 pub use canvas::Canvas;
+
+#[cfg(feature = "qr_code")]
+pub mod qr_code;
+
+#[cfg(feature = "qr_code")]
+pub use qr_code::QRCode;

graphics/src/widget/pure/qr_code.rs

@@ -0,0 +1,61 @@
+//! Encode and display information in a QR code.
+pub use crate::qr_code::*;
+
+use crate::{Backend, Renderer};
+
+use iced_native::layout::{self, Layout};
+use iced_native::renderer;
+use iced_native::{Length, Point, Rectangle};
+use iced_pure::widget::tree::Tree;
+use iced_pure::{Element, Widget};
+
+impl<'a, Message, B> Widget<Message, Renderer<B>> for QRCode<'a>
+where
+    B: Backend,
+{
+    fn width(&self) -> Length {
+        <Self as iced_native::Widget<Message, Renderer<B>>>::width(self)
+    }
+
+    fn height(&self) -> Length {
+        <Self as iced_native::Widget<Message, Renderer<B>>>::height(self)
+    }
+
+    fn layout(
+        &self,
+        renderer: &Renderer<B>,
+        limits: &layout::Limits,
+    ) -> layout::Node {
+        <Self as iced_native::Widget<Message, Renderer<B>>>::layout(
+            self, renderer, limits,
+        )
+    }
+
+    fn draw(
+        &self,
+        _tree: &Tree,
+        renderer: &mut Renderer<B>,
+        style: &renderer::Style,
+        layout: Layout<'_>,
+        cursor_position: Point,
+        viewport: &Rectangle,
+    ) {
+        <Self as iced_native::Widget<Message, Renderer<B>>>::draw(
+            self,
+            renderer,
+            style,
+            layout,
+            cursor_position,
+            viewport,
+        )
+    }
+}
+
+impl<'a, Message, B> Into<Element<'a, Message, Renderer<B>>> for QRCode<'a>
+where
+    B: Backend,
+{
+    fn into(self) -> Element<'a, Message, Renderer<B>> {
+        Element::new(self)
+    }
+}

src/pure/widget.rs

@@ -139,6 +139,9 @@ pub use toggler::Toggler;
 #[cfg(feature = "canvas")]
 pub use iced_graphics::widget::pure::canvas;
 
+#[cfg(feature = "qr_code")]
+pub use iced_graphics::widget::pure::qr_code;
+
 #[cfg(feature = "image")]
 pub mod image {
     //! Display images in your user interface.
@@ -151,5 +154,8 @@ pub mod image {
 #[cfg(feature = "canvas")]
 pub use canvas::Canvas;
 
+#[cfg(feature = "qr_code")]
+pub use qr_code::QRCode;
+
 #[cfg(feature = "image")]
 pub use image::Image;