From 297b6b282c094093e3bcc6b4fc9627c2d35bdb6d Mon Sep 17 00:00:00 2001
From: Nathan Sobo <nathan@zed.dev>
Date: Fri, 13 Oct 2023 12:41:00 -0600
Subject: [PATCH] Make all geometry types Default to support movement-based
 refinement

---
 crates/gpui3/src/geometry.rs | 188 +++++++++++++++++++++++++----------
 crates/gpui3/src/scene.rs    |   4 +-
 crates/gpui3/src/taffy.rs    |  59 +++++------
 crates/gpui3/src/window.rs   |   2 +-
 4 files changed, 170 insertions(+), 83 deletions(-)

diff --git a/crates/gpui3/src/geometry.rs b/crates/gpui3/src/geometry.rs
index aace043b926ce6fefa6b62497a5044148beb4f66..33d6809044812f5a0eac700ff85697d7e7169840 100644
--- a/crates/gpui3/src/geometry.rs
+++ b/crates/gpui3/src/geometry.rs
@@ -2,28 +2,29 @@ use core::fmt::Debug;
 use derive_more::{Add, AddAssign, Div, Mul, Neg, Sub, SubAssign};
 use refineable::Refineable;
 use std::{
-    cmp, fmt,
+    cmp::{self, PartialOrd},
+    fmt,
     ops::{Add, AddAssign, Div, Mul, MulAssign, Sub, SubAssign},
 };
 
 #[derive(Refineable, Default, Add, AddAssign, Sub, SubAssign, Copy, Debug, PartialEq, Eq, Hash)]
 #[refineable(debug)]
 #[repr(C)]
-pub struct Point<T: Clone + Debug> {
+pub struct Point<T: Default + Clone + Debug> {
     pub x: T,
     pub y: T,
 }
 
-pub fn point<T: Clone + Debug>(x: T, y: T) -> Point<T> {
+pub fn point<T: Clone + Debug + Default>(x: T, y: T) -> Point<T> {
     Point { x, y }
 }
 
-impl<T: Clone + Debug> Point<T> {
+impl<T: Clone + Debug + Default> Point<T> {
     pub fn new(x: T, y: T) -> Self {
         Self { x, y }
     }
 
-    pub fn map<U: Clone + Debug, F: Fn(T) -> U>(&self, f: F) -> Point<U> {
+    pub fn map<U: Clone + Default + Debug>(&self, f: impl Fn(T) -> U) -> Point<U> {
         Point {
             x: f(self.x.clone()),
             y: f(self.y.clone()),
@@ -42,7 +43,7 @@ impl Point<Pixels> {
 
 impl<T, Rhs> Mul<Rhs> for Point<T>
 where
-    T: Mul<Rhs, Output = T> + Clone + Debug,
+    T: Mul<Rhs, Output = T> + Clone + Default + Debug,
     Rhs: Clone + Debug,
 {
     type Output = Point<T>;
@@ -55,28 +56,42 @@ where
     }
 }
 
-impl<T: Clone + Debug + Mul<S, Output = T>, S: Clone> MulAssign<S> for Point<T> {
+impl<T, S> MulAssign<S> for Point<T>
+where
+    T: Clone + Mul<S, Output = T> + Default + Debug,
+    S: Clone,
+{
     fn mul_assign(&mut self, rhs: S) {
         self.x = self.x.clone() * rhs.clone();
         self.y = self.y.clone() * rhs;
     }
 }
 
-impl<T: Clone + Debug + Sub<Output = T>> SubAssign<Size<T>> for Point<T> {
+impl<T> SubAssign<Size<T>> for Point<T>
+where
+    T: Sub<Output = T> + Clone + Debug + Default,
+{
     fn sub_assign(&mut self, rhs: Size<T>) {
         self.x = self.x.clone() - rhs.width;
         self.y = self.y.clone() - rhs.height;
     }
 }
 
-impl<T: Clone + Debug + Add<Output = T> + Copy> AddAssign<T> for Point<T> {
+impl<T> AddAssign<T> for Point<T>
+where
+    T: Add<Output = T> + Clone + Default + Debug,
+{
     fn add_assign(&mut self, rhs: T) {
-        self.x = self.x.clone() + rhs;
+        self.x = self.x.clone() + rhs.clone();
         self.y = self.y.clone() + rhs;
     }
 }
 
-impl<T: Clone + Debug + Div<S, Output = T>, S: Clone> Div<S> for Point<T> {
+impl<T, S> Div<S> for Point<T>
+where
+    T: Div<S, Output = T> + Clone + Default + Debug,
+    S: Clone,
+{
     type Output = Self;
 
     fn div(self, rhs: S) -> Self::Output {
@@ -87,7 +102,10 @@ impl<T: Clone + Debug + Div<S, Output = T>, S: Clone> Div<S> for Point<T> {
     }
 }
 
-impl<T: Clone + Debug + cmp::PartialOrd> Point<T> {
+impl<T> Point<T>
+where
+    T: PartialOrd + Clone + Default + Debug,
+{
     pub fn max(&self, other: &Self) -> Self {
         Point {
             x: if self.x >= other.x {
@@ -119,7 +137,7 @@ impl<T: Clone + Debug + cmp::PartialOrd> Point<T> {
     }
 }
 
-impl<T: Clone + Debug> Clone for Point<T> {
+impl<T: Clone + Default + Debug> Clone for Point<T> {
     fn clone(&self) -> Self {
         Self {
             x: self.x.clone(),
@@ -131,17 +149,26 @@ impl<T: Clone + Debug> Clone for Point<T> {
 #[derive(Refineable, Default, Clone, Copy, PartialEq, Div, Hash)]
 #[refineable(debug)]
 #[repr(C)]
-pub struct Size<T: Clone + Debug> {
+pub struct Size<T: Clone + Default + Debug> {
     pub width: T,
     pub height: T,
 }
 
-pub fn size<T: Clone + Debug>(width: T, height: T) -> Size<T> {
+pub fn size<T>(width: T, height: T) -> Size<T>
+where
+    T: Clone + Default + Debug,
+{
     Size { width, height }
 }
 
-impl<T: Clone + Debug> Size<T> {
-    pub fn map<U: Clone + Debug, F: Fn(T) -> U>(&self, f: F) -> Size<U> {
+impl<T> Size<T>
+where
+    T: Clone + Default + Debug,
+{
+    pub fn map<U>(&self, f: impl Fn(T) -> U) -> Size<U>
+    where
+        U: Clone + Default + Debug,
+    {
         Size {
             width: f(self.width.clone()),
             height: f(self.height.clone()),
@@ -158,7 +185,10 @@ impl Size<Pixels> {
     }
 }
 
-impl<T: Clone + Debug + Ord> Size<T> {
+impl<T> Size<T>
+where
+    T: Ord + Clone + Default + Debug,
+{
     pub fn max(&self, other: &Self) -> Self {
         Size {
             width: if self.width >= other.width {
@@ -177,8 +207,8 @@ impl<T: Clone + Debug + Ord> Size<T> {
 
 impl<T, Rhs> Mul<Rhs> for Size<T>
 where
-    T: Mul<Rhs, Output = Rhs> + Debug + Clone,
-    Rhs: Debug + Clone,
+    T: Mul<Rhs, Output = Rhs> + Clone + Default + Debug,
+    Rhs: Clone + Default + Debug,
 {
     type Output = Size<Rhs>;
 
@@ -190,16 +220,23 @@ where
     }
 }
 
-impl<T: Clone + Debug + Mul<S, Output = T>, S: Clone> MulAssign<S> for Size<T> {
+impl<T, S> MulAssign<S> for Size<T>
+where
+    T: Mul<S, Output = T> + Clone + Default + Debug,
+    S: Clone,
+{
     fn mul_assign(&mut self, rhs: S) {
         self.width = self.width.clone() * rhs.clone();
         self.height = self.height.clone() * rhs;
     }
 }
 
-impl<T: Eq + Debug + Clone> Eq for Size<T> {}
+impl<T> Eq for Size<T> where T: Eq + Default + Debug + Clone {}
 
-impl<T: Clone + Debug> Debug for Size<T> {
+impl<T> Debug for Size<T>
+where
+    T: Clone + Default + Debug,
+{
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         write!(f, "Size {{ {:?} × {:?} }}", self.width, self.height)
     }
@@ -244,12 +281,15 @@ impl Size<Length> {
 #[derive(Refineable, Clone, Default, Debug, Eq, PartialEq)]
 #[refineable(debug)]
 #[repr(C)]
-pub struct Bounds<T: Clone + Debug + Default> {
+pub struct Bounds<T: Clone + Default + Debug> {
     pub origin: Point<T>,
     pub size: Size<T>,
 }
 
-impl<T: Clone + Debug + Sub<Output = T> + Default> Bounds<T> {
+impl<T> Bounds<T>
+where
+    T: Clone + Debug + Sub<Output = T> + Default,
+{
     pub fn from_corners(upper_left: Point<T>, lower_right: Point<T>) -> Self {
         let origin = Point {
             x: upper_left.x.clone(),
@@ -263,7 +303,10 @@ impl<T: Clone + Debug + Sub<Output = T> + Default> Bounds<T> {
     }
 }
 
-impl<T: Clone + Debug + PartialOrd + Add<T, Output = T> + Sub<Output = T> + Default> Bounds<T> {
+impl<T> Bounds<T>
+where
+    T: Clone + Debug + PartialOrd + Add<T, Output = T> + Sub<Output = T> + Default,
+{
     pub fn intersects(&self, other: &Bounds<T>) -> bool {
         let my_lower_right = self.lower_right();
         let their_lower_right = other.lower_right();
@@ -283,7 +326,7 @@ impl<T: Clone + Debug + PartialOrd + Add<T, Output = T> + Sub<Output = T> + Defa
     }
 }
 
-impl<T: Clone + Debug + PartialOrd + Add<T, Output = T> + Sub<Output = T>> Bounds<T> {
+impl<T: Clone + Default + Debug + PartialOrd + Add<T, Output = T> + Sub<Output = T>> Bounds<T> {
     pub fn intersect(&self, other: &Self) -> Self {
         let upper_left = self.origin.max(&other.origin);
         let lower_right = self.lower_right().min(&other.lower_right());
@@ -299,9 +342,9 @@ impl<T: Clone + Debug + PartialOrd + Add<T, Output = T> + Sub<Output = T>> Bound
 
 impl<T, Rhs> Mul<Rhs> for Bounds<T>
 where
-    T: Mul<Rhs, Output = Rhs> + Clone + Debug,
+    T: Mul<Rhs, Output = Rhs> + Clone + Default + Debug,
     Point<T>: Mul<Rhs, Output = Point<Rhs>>,
-    Rhs: Clone + Debug,
+    Rhs: Clone + Default + Debug,
 {
     type Output = Bounds<Rhs>;
 
@@ -313,16 +356,22 @@ where
     }
 }
 
-impl<T: Clone + Debug + Mul<S, Output = T>, S: Clone> MulAssign<S> for Bounds<T> {
+impl<T, S> MulAssign<S> for Bounds<T>
+where
+    T: Mul<S, Output = T> + Clone + Default + Debug,
+    S: Clone,
+{
     fn mul_assign(&mut self, rhs: S) {
         self.origin *= rhs.clone();
         self.size *= rhs;
     }
 }
 
-impl<T: Clone + Debug + Div<S, Output = T>, S: Clone> Div<S> for Bounds<T>
+impl<T, S> Div<S> for Bounds<T>
 where
     Size<T>: Div<S, Output = Size<T>>,
+    T: Div<S, Output = T> + Default + Clone + Debug,
+    S: Clone,
 {
     type Output = Self;
 
@@ -334,7 +383,10 @@ where
     }
 }
 
-impl<T: Clone + Debug + Add<T, Output = T>> Bounds<T> {
+impl<T> Bounds<T>
+where
+    T: Add<T, Output = T> + Clone + Default + Debug,
+{
     pub fn upper_right(&self) -> Point<T> {
         Point {
             x: self.origin.x.clone() + self.size.width.clone(),
@@ -357,7 +409,10 @@ impl<T: Clone + Debug + Add<T, Output = T>> Bounds<T> {
     }
 }
 
-impl<T: Clone + Debug + PartialOrd + Add<T, Output = T>> Bounds<T> {
+impl<T> Bounds<T>
+where
+    T: Add<T, Output = T> + PartialOrd + Clone + Default + Debug,
+{
     pub fn contains_point(&self, point: Point<T>) -> bool {
         point.x >= self.origin.x
             && point.x <= self.origin.x.clone() + self.size.width.clone()
@@ -365,7 +420,10 @@ impl<T: Clone + Debug + PartialOrd + Add<T, Output = T>> Bounds<T> {
             && point.y <= self.origin.y.clone() + self.size.height.clone()
     }
 
-    pub fn map<U: Clone + Debug, F: Fn(T) -> U>(&self, f: F) -> Bounds<U> {
+    pub fn map<U>(&self, f: impl Fn(T) -> U) -> Bounds<U>
+    where
+        U: Clone + Default + Debug,
+    {
         Bounds {
             origin: self.origin.map(&f),
             size: self.size.map(f),
@@ -382,19 +440,22 @@ impl Bounds<Pixels> {
     }
 }
 
-impl<T: Clone + Debug + Copy> Copy for Bounds<T> {}
+impl<T: Clone + Debug + Copy + Default> Copy for Bounds<T> {}
 
 #[derive(Refineable, Clone, Default, Debug, Eq, PartialEq)]
 #[refineable(debug)]
 #[repr(C)]
-pub struct Edges<T: Clone + Debug> {
+pub struct Edges<T: Clone + Default + Debug> {
     pub top: T,
     pub right: T,
     pub bottom: T,
     pub left: T,
 }
 
-impl<T: Clone + Debug + Mul<Output = T>> Mul for Edges<T> {
+impl<T> Mul for Edges<T>
+where
+    T: Mul<Output = T> + Clone + Default + Debug,
+{
     type Output = Self;
 
     fn mul(self, rhs: Self) -> Self::Output {
@@ -407,19 +468,26 @@ impl<T: Clone + Debug + Mul<Output = T>> Mul for Edges<T> {
     }
 }
 
-impl<T: Clone + Debug + Mul<S, Output = T>, S: Clone> MulAssign<S> for Edges<T> {
+impl<T, S> MulAssign<S> for Edges<T>
+where
+    T: Mul<S, Output = T> + Clone + Default + Debug,
+    S: Clone,
+{
     fn mul_assign(&mut self, rhs: S) {
         self.top = self.top.clone() * rhs.clone();
         self.right = self.right.clone() * rhs.clone();
         self.bottom = self.bottom.clone() * rhs.clone();
-        self.left = self.left.clone() * rhs.clone();
+        self.left = self.left.clone() * rhs;
     }
 }
 
-impl<T: Clone + Debug + Copy> Copy for Edges<T> {}
+impl<T: Clone + Default + Debug + Copy> Copy for Edges<T> {}
 
-impl<T: Clone + Debug> Edges<T> {
-    pub fn map<U: Clone + Debug, F: Fn(&T) -> U>(&self, f: F) -> Edges<U> {
+impl<T: Clone + Default + Debug> Edges<T> {
+    pub fn map<U>(&self, f: impl Fn(&T) -> U) -> Edges<U>
+    where
+        U: Clone + Default + Debug,
+    {
         Edges {
             top: f(&self.top),
             right: f(&self.right),
@@ -501,7 +569,7 @@ impl Edges<Pixels> {
 #[derive(Refineable, Clone, Default, Debug, Eq, PartialEq)]
 #[refineable(debug)]
 #[repr(C)]
-pub struct Corners<T: Clone + Debug> {
+pub struct Corners<T: Clone + Default + Debug> {
     pub top_left: T,
     pub top_right: T,
     pub bottom_right: T,
@@ -531,8 +599,11 @@ impl Corners<Pixels> {
     }
 }
 
-impl<T: Clone + Debug> Corners<T> {
-    pub fn map<U: Clone + Debug, F: Fn(&T) -> U>(&self, f: F) -> Corners<U> {
+impl<T: Clone + Default + Debug> Corners<T> {
+    pub fn map<U>(&self, f: impl Fn(&T) -> U) -> Corners<U>
+    where
+        U: Clone + Default + Debug,
+    {
         Corners {
             top_left: f(&self.top_left),
             top_right: f(&self.top_right),
@@ -542,7 +613,10 @@ impl<T: Clone + Debug> Corners<T> {
     }
 }
 
-impl<T: Clone + Debug + Mul<Output = T>> Mul for Corners<T> {
+impl<T> Mul for Corners<T>
+where
+    T: Mul<Output = T> + Clone + Default + Debug,
+{
     type Output = Self;
 
     fn mul(self, rhs: Self) -> Self::Output {
@@ -555,7 +629,11 @@ impl<T: Clone + Debug + Mul<Output = T>> Mul for Corners<T> {
     }
 }
 
-impl<T: Clone + Debug + Mul<S, Output = T>, S: Clone> MulAssign<S> for Corners<T> {
+impl<T, S> MulAssign<S> for Corners<T>
+where
+    T: Mul<S, Output = T> + Clone + Default + Debug,
+    S: Clone,
+{
     fn mul_assign(&mut self, rhs: S) {
         self.top_left = self.top_left.clone() * rhs.clone();
         self.top_right = self.top_right.clone() * rhs.clone();
@@ -564,7 +642,7 @@ impl<T: Clone + Debug + Mul<S, Output = T>, S: Clone> MulAssign<S> for Corners<T
     }
 }
 
-impl<T: Clone + Debug + Copy> Copy for Corners<T> {}
+impl<T> Copy for Corners<T> where T: Copy + Clone + Default + Debug {}
 
 #[derive(Clone, Copy, Default, Add, AddAssign, Sub, SubAssign, Div, Neg, PartialEq, PartialOrd)]
 #[repr(transparent)]
@@ -1016,25 +1094,31 @@ impl IsZero for Length {
     }
 }
 
-impl<T: IsZero + Debug + Clone> IsZero for Point<T> {
+impl<T: IsZero + Debug + Clone + Default> IsZero for Point<T> {
     fn is_zero(&self) -> bool {
         self.x.is_zero() && self.y.is_zero()
     }
 }
 
-impl<T: IsZero + Debug + Clone> IsZero for Size<T> {
+impl<T> IsZero for Size<T>
+where
+    T: IsZero + Default + Debug + Clone,
+{
     fn is_zero(&self) -> bool {
         self.width.is_zero() || self.height.is_zero()
     }
 }
 
-impl<T: IsZero + Debug + Clone> IsZero for Bounds<T> {
+impl<T: IsZero + Debug + Clone + Default> IsZero for Bounds<T> {
     fn is_zero(&self) -> bool {
         self.size.is_zero()
     }
 }
 
-impl<T: IsZero + Debug + Clone> IsZero for Corners<T> {
+impl<T> IsZero for Corners<T>
+where
+    T: IsZero + Clone + Default + Debug,
+{
     fn is_zero(&self) -> bool {
         self.top_left.is_zero()
             && self.top_right.is_zero()
diff --git a/crates/gpui3/src/scene.rs b/crates/gpui3/src/scene.rs
index 5406b024d64ec878e46abb2179eb86efd870d953..f4404218b05d5e67a3df02f8c051f0a17cade27c 100644
--- a/crates/gpui3/src/scene.rs
+++ b/crates/gpui3/src/scene.rs
@@ -595,7 +595,7 @@ impl From<PolychromeSprite> for Primitive {
 pub(crate) struct PathId(pub(crate) usize);
 
 #[derive(Debug)]
-pub struct Path<P: Clone + Debug> {
+pub struct Path<P: Clone + Default + Debug> {
     pub(crate) id: PathId,
     order: u32,
     pub(crate) bounds: Bounds<P>,
@@ -736,7 +736,7 @@ impl From<Path<ScaledPixels>> for Primitive {
 
 #[derive(Clone, Debug)]
 #[repr(C)]
-pub struct PathVertex<P: Clone + Debug> {
+pub struct PathVertex<P: Clone + Default + Debug> {
     pub(crate) xy_position: Point<P>,
     pub(crate) st_position: Point<f32>,
     pub(crate) content_mask: ContentMask<P>,
diff --git a/crates/gpui3/src/taffy.rs b/crates/gpui3/src/taffy.rs
index 154cb071ddde35710bd8b8732cbfc26eb87dbd1a..cadb7e1b57bff164c2e63ea41b5d5aa2edb05fe4 100644
--- a/crates/gpui3/src/taffy.rs
+++ b/crates/gpui3/src/taffy.rs
@@ -2,7 +2,7 @@ use super::{AbsoluteLength, Bounds, DefiniteLength, Edges, Length, Pixels, Point
 use collections::HashMap;
 use std::fmt::Debug;
 use taffy::{
-    geometry::Size as TaffySize,
+    geometry::{Point as TaffyPoint, Rect as TaffyRect, Size as TaffySize},
     style::AvailableSpace as TaffyAvailableSpace,
     tree::{Measurable, MeasureFunc, NodeId},
     Taffy,
@@ -321,11 +321,12 @@ impl ToTaffy<taffy::style::LengthPercentage> for AbsoluteLength {
     }
 }
 
-impl<T, T2: Clone + Debug> From<taffy::geometry::Point<T>> for Point<T2>
+impl<T, T2> From<TaffyPoint<T>> for Point<T2>
 where
     T: Into<T2>,
+    T2: Clone + Default + Debug,
 {
-    fn from(point: taffy::geometry::Point<T>) -> Point<T2> {
+    fn from(point: TaffyPoint<T>) -> Point<T2> {
         Point {
             x: point.x.into(),
             y: point.y.into(),
@@ -333,33 +334,36 @@ where
     }
 }
 
-impl<T: Clone + Debug, T2> Into<taffy::geometry::Point<T2>> for Point<T>
+impl<T, T2> Into<TaffyPoint<T2>> for Point<T>
 where
-    T: Into<T2>,
+    T: Into<T2> + Clone + Default + Debug,
 {
-    fn into(self) -> taffy::geometry::Point<T2> {
-        taffy::geometry::Point {
+    fn into(self) -> TaffyPoint<T2> {
+        TaffyPoint {
             x: self.x.into(),
             y: self.y.into(),
         }
     }
 }
 
-impl<T: ToTaffy<U> + Clone + Debug, U> ToTaffy<taffy::geometry::Size<U>> for Size<T> {
-    fn to_taffy(&self, rem_size: Pixels) -> taffy::geometry::Size<U> {
-        taffy::geometry::Size {
+impl<T, U> ToTaffy<TaffySize<U>> for Size<T>
+where
+    T: ToTaffy<U> + Clone + Default + Debug,
+{
+    fn to_taffy(&self, rem_size: Pixels) -> TaffySize<U> {
+        TaffySize {
             width: self.width.to_taffy(rem_size).into(),
             height: self.height.to_taffy(rem_size).into(),
         }
     }
 }
 
-impl<T, U> ToTaffy<taffy::geometry::Rect<U>> for Edges<T>
+impl<T, U> ToTaffy<TaffyRect<U>> for Edges<T>
 where
-    T: ToTaffy<U> + Clone + Debug,
+    T: ToTaffy<U> + Clone + Default + Debug,
 {
-    fn to_taffy(&self, rem_size: Pixels) -> taffy::geometry::Rect<U> {
-        taffy::geometry::Rect {
+    fn to_taffy(&self, rem_size: Pixels) -> TaffyRect<U> {
+        TaffyRect {
             top: self.top.to_taffy(rem_size).into(),
             right: self.right.to_taffy(rem_size).into(),
             bottom: self.bottom.to_taffy(rem_size).into(),
@@ -368,8 +372,12 @@ where
     }
 }
 
-impl<T: Into<U>, U: Clone + Debug> From<TaffySize<T>> for Size<U> {
-    fn from(taffy_size: taffy::geometry::Size<T>) -> Self {
+impl<T, U> From<TaffySize<T>> for Size<U>
+where
+    T: Into<U>,
+    U: Clone + Default + Debug,
+{
+    fn from(taffy_size: TaffySize<T>) -> Self {
         Size {
             width: taffy_size.width.into(),
             height: taffy_size.height.into(),
@@ -377,29 +385,24 @@ impl<T: Into<U>, U: Clone + Debug> From<TaffySize<T>> for Size<U> {
     }
 }
 
-impl<T: Into<U> + Clone + Debug, U> From<Size<T>> for taffy::geometry::Size<U> {
+impl<T, U> From<Size<T>> for TaffySize<U>
+where
+    T: Into<U> + Clone + Default + Debug,
+{
     fn from(size: Size<T>) -> Self {
-        taffy::geometry::Size {
+        TaffySize {
             width: size.width.into(),
             height: size.height.into(),
         }
     }
 }
 
-// impl From<TaffySize<Option<f32>>> for Size<Option<Pixels>> {
-//     fn from(value: TaffySize<Option<f32>>) -> Self {
-//         Self {
-//             width: value.width.map(Into::into),
-//             height: value.height.map(Into::into),
-//         }
-//     }
-// }
-
-#[derive(Copy, Clone, Debug)]
+#[derive(Copy, Clone, Default, Debug)]
 pub enum AvailableSpace {
     /// The amount of space available is the specified number of pixels
     Definite(Pixels),
     /// The amount of space available is indefinite and the node should be laid out under a min-content constraint
+    #[default]
     MinContent,
     /// The amount of space available is indefinite and the node should be laid out under a max-content constraint
     MaxContent,
diff --git a/crates/gpui3/src/window.rs b/crates/gpui3/src/window.rs
index 0af65f476c902eb02554c7a1c40b5082d2fa0947..2861664b51e43ba6aa0fe0d9cd08205354ebc1a3 100644
--- a/crates/gpui3/src/window.rs
+++ b/crates/gpui3/src/window.rs
@@ -132,7 +132,7 @@ impl Window {
 
 #[derive(Clone, Debug, Default, PartialEq, Eq)]
 #[repr(C)]
-pub struct ContentMask<P: Clone + Debug> {
+pub struct ContentMask<P: Clone + Default + Debug> {
     pub bounds: Bounds<P>,
 }