Create iced_core and iced_native

native/src/widget/radio.rs

@@ -0,0 +1,92 @@
+//! Create choices using radio buttons.
+use crate::input::{mouse, ButtonState};
+use crate::{Element, Event, Hasher, Layout, MouseCursor, Node, Point, Widget};
+
+use std::hash::Hash;
+
+pub use iced_core::Radio;
+
+impl<Message, Renderer> Widget<Message, Renderer> for Radio<Message>
+where
+    Renderer: self::Renderer,
+    Message: Copy + std::fmt::Debug,
+{
+    fn node(&self, renderer: &mut Renderer) -> Node {
+        renderer.node(&self)
+    }
+
+    fn on_event(
+        &mut self,
+        event: Event,
+        layout: Layout<'_>,
+        cursor_position: Point,
+        messages: &mut Vec<Message>,
+    ) {
+        match event {
+            Event::Mouse(mouse::Event::Input {
+                button: mouse::Button::Left,
+                state: ButtonState::Pressed,
+            }) => {
+                if layout.bounds().contains(cursor_position) {
+                    messages.push(self.on_click);
+                }
+            }
+            _ => {}
+        }
+    }
+
+    fn draw(
+        &self,
+        renderer: &mut Renderer,
+        layout: Layout<'_>,
+        cursor_position: Point,
+    ) -> MouseCursor {
+        renderer.draw(&self, layout, cursor_position)
+    }
+
+    fn hash_layout(&self, state: &mut Hasher) {
+        self.label.hash(state);
+    }
+}
+
+/// The renderer of a [`Radio`] button.
+///
+/// Your [renderer] will need to implement this trait before being
+/// able to use a [`Radio`] button in your user interface.
+///
+/// [`Radio`]: struct.Radio.html
+/// [renderer]: ../../renderer/index.html
+pub trait Renderer {
+    /// Creates a [`Node`] for the provided [`Radio`].
+    ///
+    /// [`Node`]: ../../struct.Node.html
+    /// [`Radio`]: struct.Radio.html
+    fn node<Message>(&mut self, radio: &Radio<Message>) -> Node;
+
+    /// Draws a [`Radio`] button.
+    ///
+    /// It receives:
+    ///   * the current cursor position
+    ///   * the bounds of the [`Radio`]
+    ///   * the bounds of the label of the [`Radio`]
+    ///   * whether the [`Radio`] is selected or not
+    ///
+    /// [`Radio`]: struct.Radio.html
+    fn draw<Message>(
+        &mut self,
+        radio: &Radio<Message>,
+        layout: Layout<'_>,
+        cursor_position: Point,
+    ) -> MouseCursor;
+}
+
+impl<'a, Message, Renderer> From<Radio<Message>>
+    for Element<'a, Message, Renderer>
+where
+    Renderer: self::Renderer,
+    Message: 'static + Copy + std::fmt::Debug,
+{
+    fn from(checkbox: Radio<Message>) -> Element<'a, Message, Renderer> {
+        Element::new(checkbox)
+    }
+}