From fbff00341d67933f194ee8fd8ebbdd12bfa7fc4f Mon Sep 17 00:00:00 2001
From: Nor Khasyatillah <mazznoer@ymail.com>
Date: Mon, 19 Aug 2024 15:46:21 +0700
Subject: [PATCH] impl Clone for Box<dyn Gradient>

---
 src/lib.rs        | 21 ++++++++++++++++++++-
 tests/gradient.rs |  6 ++++++
 2 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/src/lib.rs b/src/lib.rs
index 9704480..249bbf6 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -150,7 +150,7 @@ pub enum BlendMode {
     Lab,
 }
 
-pub trait Gradient {
+pub trait Gradient: CloneGradient {
     /// Get color at certain position
     fn at(&self, t: f32) -> Color;
 
@@ -205,6 +205,25 @@ pub trait Gradient {
     }
 }
 
+pub trait CloneGradient {
+    fn clone_gradient(&self) -> Box<dyn Gradient>;
+}
+
+impl<T> CloneGradient for T
+where
+    T: Gradient + Clone + 'static,
+{
+    fn clone_gradient(&self) -> Box<dyn Gradient> {
+        Box::new(self.clone())
+    }
+}
+
+impl Clone for Box<dyn Gradient> {
+    fn clone(&self) -> Self {
+        self.clone_gradient()
+    }
+}
+
 fn convert_colors(colors: &[Color], mode: BlendMode) -> Vec<[f32; 4]> {
     colors
         .iter()
diff --git a/tests/gradient.rs b/tests/gradient.rs
index cd55a70..67e49e3 100644
--- a/tests/gradient.rs
+++ b/tests/gradient.rs
@@ -138,3 +138,9 @@ fn colors() {
         &["#ff0000", "#808000", "#00ff00", "#008080", "#0000ff",]
     );
 }
+
+#[test]
+fn box_clone() {
+    let g: Box<dyn Gradient> = Box::new(GradientBuilder::new().build::<LinearGradient>().unwrap());
+    let _: Box<dyn Gradient> = g.clone();
+}