Evaluation and node-based layouting 🚀

1 files changed, 38 insertions, 26 deletions

diff --git a/src/layout/primitive.rs b/src/layout/primitive.rs
index f932b85b..b641b5c7 100644
--- a/src/layout/primitive.rs
+++ b/src/layout/primitive.rs
@@ -2,7 +2,7 @@
 
 use std::fmt::{self, Display, Formatter};
 
-use crate::geom::{Point, Size, Vec2};
+use crate::geom::{Insets, Linear, Point, Size, Vec2};
 
 /// Generic access to a structure's components.
 pub trait Get<Index> {
@@ -126,6 +126,11 @@ impl<T> Gen2<T> {
     }
 }
 
+impl Gen2<f64> {
+    /// The instance that has both components set to zero.
+    pub const ZERO: Self = Self { main: 0.0, cross: 0.0 };
+}
+
 impl<T> Get<GenAxis> for Gen2<T> {
     type Component = T;
 
@@ -155,11 +160,6 @@ impl<T> Switch for Gen2<T> {
     }
 }
 
-impl Gen2<f64> {
-    /// The instance that has both components set to zero.
-    pub const ZERO: Self = Self { main: 0.0, cross: 0.0 };
-}
-
 /// A generic container with two components for the two specific axes.
 #[derive(Debug, Default, Copy, Clone, Eq, PartialEq)]
 pub struct Spec2<T> {
@@ -176,6 +176,26 @@ impl<T> Spec2<T> {
     }
 }
 
+impl Spec2<f64> {
+    /// The instance that has both components set to zero.
+    pub const ZERO: Self = Self { horizontal: 0.0, vertical: 0.0 };
+
+    /// Convert to a 2D vector.
+    pub fn to_vec2(self) -> Vec2 {
+        Vec2::new(self.horizontal, self.vertical)
+    }
+
+    /// Convert to a point.
+    pub fn to_point(self) -> Point {
+        Point::new(self.horizontal, self.vertical)
+    }
+
+    /// Convert to a size.
+    pub fn to_size(self) -> Size {
+        Size::new(self.horizontal, self.vertical)
+    }
+}
+
 impl<T> Get<SpecAxis> for Spec2<T> {
     type Component = T;
 
@@ -205,26 +225,6 @@ impl<T> Switch for Spec2<T> {
     }
 }
 
-impl Spec2<f64> {
-    /// The instance that has both components set to zero.
-    pub const ZERO: Self = Self { horizontal: 0.0, vertical: 0.0 };
-
-    /// Convert to a 2D vector.
-    pub fn to_vec2(self) -> Vec2 {
-        Vec2::new(self.horizontal, self.vertical)
-    }
-
-    /// Convert to a point.
-    pub fn to_point(self) -> Point {
-        Point::new(self.horizontal, self.vertical)
-    }
-
-    /// Convert to a size.
-    pub fn to_size(self) -> Size {
-        Size::new(self.horizontal, self.vertical)
-    }
-}
-
 /// The two generic layouting axes.
 #[derive(Debug, Copy, Clone, Eq, PartialEq)]
 pub enum GenAxis {
@@ -444,6 +444,18 @@ impl<T> Sides<T> {
     }
 }
 
+impl Sides<Linear> {
+    /// The absolute insets.
+    pub fn insets(self, Size { width, height }: Size) -> Insets {
+        Insets {
+            x0: -self.left.eval(width),
+            y0: -self.top.eval(height),
+            x1: -self.right.eval(width),
+            y1: -self.bottom.eval(height),
+        }
+    }
+}
+
 impl<T> Get<Side> for Sides<T> {
     type Component = T;