Modularize iced_wgpu

wgpu/src/renderer/button.rs

@@ -0,0 +1,18 @@
+use crate::{Primitive, Renderer};
+use iced_native::{button, Button, Layout, Node, Point, Style};
+
+impl button::Renderer for Renderer {
+    fn node<Message>(&self, _button: &Button<Message>) -> Node {
+        Node::new(Style::default())
+    }
+
+    fn draw<Message>(
+        &mut self,
+        _button: &Button<Message>,
+        _layout: Layout<'_>,
+        _cursor_position: Point,
+    ) -> Self::Primitive {
+        // TODO
+        Primitive::None
+    }
+}