Move `Position` and `Location` to `gradient` module

1 files changed, 89 insertions, 7 deletions

diff --git a/graphics/src/gradient.rs b/graphics/src/gradient.rs
index da0f911d..64f9e4b3 100644
--- a/graphics/src/gradient.rs
+++ b/graphics/src/gradient.rs
@@ -1,8 +1,9 @@
 //! For creating a Gradient.
-mod linear;
+pub mod linear;
 
-pub use crate::gradient::linear::{Linear, Location, Position};
-use crate::Color;
+pub use linear::Linear;
+
+use crate::{Color, Point, Size};
 
 #[derive(Debug, Clone, PartialEq)]
 /// A fill which transitions colors progressively along a direction, either linearly, radially (TBD),
@@ -13,6 +14,13 @@ pub enum Gradient {
     Linear(Linear),
 }
 
+impl Gradient {
+    /// Creates a new linear [`linear::Builder`].
+    pub fn linear(position: impl Into<Position>) -> linear::Builder {
+        linear::Builder::new(position.into())
+    }
+}
+
 #[derive(Debug, Clone, Copy, PartialEq)]
 /// A point along the gradient vector where the specified [`color`] is unmixed.
 pub struct ColorStop {
@@ -22,9 +30,83 @@ pub struct ColorStop {
     pub color: Color,
 }
 
-impl Gradient {
-    /// Creates a new linear [`linear::Builder`].
-    pub fn linear(position: impl Into<Position>) -> linear::Builder {
-        linear::Builder::new(position.into())
+#[derive(Debug)]
+/// The position of the gradient within its bounds.
+pub enum Position {
+    /// The gradient will be positioned with respect to two points.
+    Absolute {
+        /// The starting point of the gradient.
+        start: Point,
+        /// The ending point of the gradient.
+        end: Point,
+    },
+    /// The gradient will be positioned relative to the provided bounds.
+    Relative {
+        /// The top left position of the bounds.
+        top_left: Point,
+        /// The width & height of the bounds.
+        size: Size,
+        /// The start [Location] of the gradient.
+        start: Location,
+        /// The end [Location] of the gradient.
+        end: Location,
+    },
+}
+
+impl From<(Point, Point)> for Position {
+    fn from((start, end): (Point, Point)) -> Self {
+        Self::Absolute { start, end }
+    }
+}
+
+#[derive(Debug)]
+/// The location of a relatively-positioned gradient.
+pub enum Location {
+    /// Top left.
+    TopLeft,
+    /// Top.
+    Top,
+    /// Top right.
+    TopRight,
+    /// Right.
+    Right,
+    /// Bottom right.
+    BottomRight,
+    /// Bottom.
+    Bottom,
+    /// Bottom left.
+    BottomLeft,
+    /// Left.
+    Left,
+}
+
+impl Location {
+    fn to_absolute(&self, top_left: Point, size: Size) -> Point {
+        match self {
+            Location::TopLeft => top_left,
+            Location::Top => {
+                Point::new(top_left.x + size.width / 2.0, top_left.y)
+            }
+            Location::TopRight => {
+                Point::new(top_left.x + size.width, top_left.y)
+            }
+            Location::Right => Point::new(
+                top_left.x + size.width,
+                top_left.y + size.height / 2.0,
+            ),
+            Location::BottomRight => {
+                Point::new(top_left.x + size.width, top_left.y + size.height)
+            }
+            Location::Bottom => Point::new(
+                top_left.x + size.width / 2.0,
+                top_left.y + size.height,
+            ),
+            Location::BottomLeft => {
+                Point::new(top_left.x, top_left.y + size.height)
+            }
+            Location::Left => {
+                Point::new(top_left.x, top_left.y + size.height / 2.0)
+            }
+        }
     }
 }