Move widgets from core to native and web

Also made fields private and improved `Renderer` traits.

web/src/widget/text.rs

@@ -1,7 +1,111 @@
-use crate::{Bus, Element, Widget};
+use crate::{
+    Bus, Color, Element, Font, HorizontalAlignment, Length, VerticalAlignment,
+    Widget,
+};
 use dodrio::bumpalo;
 
-pub use iced_core::text::*;
+/// A paragraph of text.
+///
+/// # Example
+///
+/// ```
+/// # use iced_web::Text;
+///
+/// Text::new("I <3 iced!")
+///     .size(40);
+/// ```
+#[derive(Debug, Clone)]
+pub struct Text {
+    content: String,
+    size: Option<u16>,
+    color: Option<Color>,
+    font: Font,
+    width: Length,
+    height: Length,
+    horizontal_alignment: HorizontalAlignment,
+    vertical_alignment: VerticalAlignment,
+}
+
+impl Text {
+    /// Create a new fragment of [`Text`] with the given contents.
+    ///
+    /// [`Text`]: struct.Text.html
+    pub fn new(label: &str) -> Self {
+        Text {
+            content: String::from(label),
+            size: None,
+            color: None,
+            font: Font::Default,
+            width: Length::Fill,
+            height: Length::Shrink,
+            horizontal_alignment: HorizontalAlignment::Left,
+            vertical_alignment: VerticalAlignment::Top,
+        }
+    }
+
+    /// Sets the size of the [`Text`].
+    ///
+    /// [`Text`]: struct.Text.html
+    pub fn size(mut self, size: u16) -> Self {
+        self.size = Some(size);
+        self
+    }
+
+    /// Sets the [`Color`] of the [`Text`].
+    ///
+    /// [`Text`]: struct.Text.html
+    /// [`Color`]: ../../struct.Color.html
+    pub fn color<C: Into<Color>>(mut self, color: C) -> Self {
+        self.color = Some(color.into());
+        self
+    }
+
+    /// Sets the [`Font`] of the [`Text`].
+    ///
+    /// [`Text`]: struct.Text.html
+    /// [`Font`]: ../../struct.Font.html
+    pub fn font(mut self, font: Font) -> Self {
+        self.font = font;
+        self
+    }
+
+    /// Sets the width of the [`Text`] boundaries.
+    ///
+    /// [`Text`]: struct.Text.html
+    pub fn width(mut self, width: Length) -> Self {
+        self.width = width;
+        self
+    }
+
+    /// Sets the height of the [`Text`] boundaries.
+    ///
+    /// [`Text`]: struct.Text.html
+    pub fn height(mut self, height: Length) -> Self {
+        self.height = height;
+        self
+    }
+
+    /// Sets the [`HorizontalAlignment`] of the [`Text`].
+    ///
+    /// [`Text`]: struct.Text.html
+    /// [`HorizontalAlignment`]: enum.HorizontalAlignment.html
+    pub fn horizontal_alignment(
+        mut self,
+        alignment: HorizontalAlignment,
+    ) -> Self {
+        self.horizontal_alignment = alignment;
+        self
+    }
+
+    /// Sets the [`VerticalAlignment`] of the [`Text`].
+    ///
+    /// [`Text`]: struct.Text.html
+    /// [`VerticalAlignment`]: enum.VerticalAlignment.html
+    pub fn vertical_alignment(mut self, alignment: VerticalAlignment) -> Self {
+        self.vertical_alignment = alignment;
+        self
+    }
+}
 
 impl<'a, Message> Widget<Message> for Text {
     fn node<'b>(