feat(layout): enable serde for Margin, Position, Rect, Size (#1255)

src/layout/margin.rs

@@ -1,6 +1,7 @@
 use std::fmt;
 
 #[derive(Debug, Default, Clone, Copy, Eq, PartialEq, Hash)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 pub struct Margin {
     pub horizontal: u16,
     pub vertical: u16,

src/layout/position.rs

@@ -24,6 +24,7 @@ use crate::layout::Rect;
 /// let (x, y) = position.into();
 /// ```
 #[derive(Debug, Default, Copy, Clone, PartialEq, Eq, Ord, PartialOrd, Hash)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 pub struct Position {
     /// The x coordinate of the position
     ///

src/layout/rect.rs

@@ -32,7 +32,8 @@ pub struct Rect {
 /// Positive numbers move to the right/bottom and negative to the left/top.
 ///
 /// See [`Rect::offset`]
-#[derive(Debug, Default, Clone, Copy)]
+#[derive(Debug, Default, Clone, Copy, Eq, PartialEq, Hash)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 pub struct Offset {
     /// How much to move on the X axis
     pub x: i32,

src/layout/size.rs

@@ -8,6 +8,7 @@ use crate::prelude::*;
 /// The width and height are stored as `u16` values and represent the number of columns and rows
 /// respectively.
 #[derive(Debug, Default, Clone, Copy, Eq, PartialEq, Hash)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 pub struct Size {
     /// The width in columns
     pub width: u16,