1 files changed, 225 insertions, 0 deletions
diff --git a/pure/src/widget/button.rs b/pure/src/widget/button.rs
new file mode 100644
index 00000000..f99d3018
--- /dev/null
+++ b/pure/src/widget/button.rs
@@ -0,0 +1,225 @@
+use crate::overlay;
+use crate::widget::tree::{self, Tree};
+use crate::{Element, Widget};
+
+use iced_native::event::{self, Event};
+use iced_native::layout;
+use iced_native::mouse;
+use iced_native::renderer;
+use iced_native::widget::button;
+use iced_native::{
+    Clipboard, Layout, Length, Padding, Point, Rectangle, Shell,
+};
+
+pub use iced_style::button::{Style, StyleSheet};
+
+use button::State;
+
+pub struct Button<'a, Message, Renderer> {
+    content: Element<'a, Message, Renderer>,
+    on_press: Option<Message>,
+    style_sheet: Box<dyn StyleSheet + 'a>,
+    width: Length,
+    height: Length,
+    padding: Padding,
+}
+
+impl<'a, Message, Renderer> Button<'a, Message, Renderer> {
+    pub fn new(content: impl Into<Element<'a, Message, Renderer>>) -> Self {
+        Button {
+            content: content.into(),
+            on_press: None,
+            style_sheet: Default::default(),
+            width: Length::Shrink,
+            height: Length::Shrink,
+            padding: Padding::new(5),
+        }
+    }
+
+    /// Sets the width of the [`Button`].
+    pub fn width(mut self, width: Length) -> Self {
+        self.width = width;
+        self
+    }
+
+    /// Sets the height of the [`Button`].
+    pub fn height(mut self, height: Length) -> Self {
+        self.height = height;
+        self
+    }
+
+    /// Sets the [`Padding`] of the [`Button`].
+    pub fn padding<P: Into<Padding>>(mut self, padding: P) -> Self {
+        self.padding = padding.into();
+        self
+    }
+
+    /// Sets the message that will be produced when the [`Button`] is pressed.
+    ///
+    /// Unless `on_press` is called, the [`Button`] will be disabled.
+    pub fn on_press(mut self, msg: Message) -> Self {
+        self.on_press = Some(msg);
+        self
+    }
+
+    /// Sets the style of the [`Button`].
+    pub fn style(
+        mut self,
+        style_sheet: impl Into<Box<dyn StyleSheet + 'a>>,
+    ) -> Self {
+        self.style_sheet = style_sheet.into();
+        self
+    }
+}
+
+impl<'a, Message, Renderer> Widget<Message, Renderer>
+    for Button<'a, Message, Renderer>
+where
+    Message: 'static + Clone,
+    Renderer: 'static + iced_native::Renderer,
+{
+    fn tag(&self) -> tree::Tag {
+        tree::Tag::of::<State>()
+    }
+
+    fn state(&self) -> tree::State {
+        tree::State::new(State::new())
+    }
+
+    fn children(&self) -> Vec<Tree> {
+        vec![Tree::new(&self.content)]
+    }
+
+    fn diff(&self, tree: &mut Tree) {
+        tree.diff_children(std::slice::from_ref(&self.content))
+    }
+
+    fn width(&self) -> Length {
+        self.width
+    }
+
+    fn height(&self) -> Length {
+        self.height
+    }
+
+    fn layout(
+        &self,
+        renderer: &Renderer,
+        limits: &layout::Limits,
+    ) -> layout::Node {
+        button::layout(
+            renderer,
+            limits,
+            self.width,
+            self.height,
+            self.padding,
+            |renderer, limits| {
+                self.content.as_widget().layout(renderer, &limits)
+            },
+        )
+    }
+
+    fn on_event(
+        &mut self,
+        tree: &mut Tree,
+        event: Event,
+        layout: Layout<'_>,
+        cursor_position: Point,
+        renderer: &Renderer,
+        clipboard: &mut dyn Clipboard,
+        shell: &mut Shell<'_, Message>,
+    ) -> event::Status {
+        if let event::Status::Captured = self.content.as_widget_mut().on_event(
+            &mut tree.children[0],
+            event.clone(),
+            layout.children().next().unwrap(),
+            cursor_position,
+            renderer,
+            clipboard,
+            shell,
+        ) {
+            return event::Status::Captured;
+        }
+
+        button::update(
+            event,
+            layout,
+            cursor_position,
+            shell,
+            &self.on_press,
+            || tree.state.downcast_mut::<State>(),
+        )
+    }
+
+    fn draw(
+        &self,
+        tree: &Tree,
+        renderer: &mut Renderer,
+        _style: &renderer::Style,
+        layout: Layout<'_>,
+        cursor_position: Point,
+        _viewport: &Rectangle,
+    ) {
+        let bounds = layout.bounds();
+        let content_layout = layout.children().next().unwrap();
+
+        let styling = button::draw(
+            renderer,
+            bounds,
+            cursor_position,
+            self.on_press.is_some(),
+            self.style_sheet.as_ref(),
+            || tree.state.downcast_ref::<State>(),
+        );
+
+        self.content.as_widget().draw(
+            &tree.children[0],
+            renderer,
+            &renderer::Style {
+                text_color: styling.text_color,
+            },
+            content_layout,
+            cursor_position,
+            &bounds,
+        );
+    }
+
+    fn mouse_interaction(
+        &self,
+        _tree: &Tree,
+        layout: Layout<'_>,
+        cursor_position: Point,
+        _viewport: &Rectangle,
+        _renderer: &Renderer,
+    ) -> mouse::Interaction {
+        button::mouse_interaction(
+            layout,
+            cursor_position,
+            self.on_press.is_some(),
+        )
+    }
+
+    fn overlay<'b>(
+        &'b self,
+        tree: &'b mut Tree,
+        layout: Layout<'_>,
+        renderer: &Renderer,
+    ) -> Option<overlay::Element<'b, Message, Renderer>> {
+        self.content.as_widget().overlay(
+            &mut tree.children[0],
+            layout.children().next().unwrap(),
+            renderer,
+        )
+    }
+}
+
+impl<'a, Message, Renderer> Into<Element<'a, Message, Renderer>>
+    for Button<'a, Message, Renderer>
+where
+    Message: Clone + 'static,
+    Renderer: iced_native::Renderer + 'static,
+{
+    fn into(self) -> Element<'a, Message, Renderer> {
+        Element::new(self)
+    }
+}