Write documentation for iced_style

style/src/text.rs

@@ -1,12 +1,20 @@
+//! Change the appearance of text.
 use iced_core::Color;
 
+/// The style sheet of some text.
 pub trait StyleSheet {
+    /// The supported style of the [`StyleSheet`].
     type Style: Default + Copy;
 
+    /// Produces the [`Appearance`] of some text.
     fn appearance(&self, style: Self::Style) -> Appearance;
 }
 
+/// The apperance of some text.
 #[derive(Debug, Clone, Copy, Default)]
 pub struct Appearance {
+    /// The [`Color`] of the text.
+    ///
+    /// The default, `None`, means using the inherited color.
     pub color: Option<Color>,
 }