From aae08044a8ebc3244016646dad7ad3407e7aae6e Mon Sep 17 00:00:00 2001
From: Sjael <jakeobrien44@gmail.com>
Date: Fri, 9 Jun 2023 16:16:19 -0700
Subject: [PATCH 1/4] bdackground color lens

added background color support, mainly for opacity
---
 src/lens.rs   | 21 +++++++++++++++++++++
 src/plugin.rs |  5 +++++
 2 files changed, 26 insertions(+)

diff --git a/src/lens.rs b/src/lens.rs
index 036334e..c02a0b3 100644
--- a/src/lens.rs
+++ b/src/lens.rs
@@ -319,6 +319,27 @@ impl Lens<Style> for UiPositionLens {
     }
 }
 
+/// Gamer
+#[cfg(feature = "bevy_ui")]
+#[derive(Debug, Copy, Clone, PartialEq)]
+pub struct UiBackgroundColorLens {
+    /// Start position.
+    pub start: Color,
+    /// End position.
+    pub end: Color,
+}
+
+
+#[cfg(feature = "bevy_ui")]
+impl Lens<BackgroundColor> for UiBackgroundColorLens {
+    fn lerp(&mut self, target: &mut BackgroundColor, ratio: f32) {
+        let start: Vec4 = self.start.into();
+        let end: Vec4 = self.end.into();
+        let value = start.lerp(end, ratio);
+        target.0 = value.into();
+    }
+}
+
 /// A lens to manipulate the [`color`] field of a [`ColorMaterial`] asset.
 ///
 /// [`color`]: https://docs.rs/bevy/0.11.0/bevy/sprite/struct.ColorMaterial.html#structfield.color
diff --git a/src/plugin.rs b/src/plugin.rs
index 0f2e025..2a6895a 100644
--- a/src/plugin.rs
+++ b/src/plugin.rs
@@ -49,6 +49,11 @@ impl Plugin for TweeningPlugin {
             Update,
             component_animator_system::<Style>.in_set(AnimationSystem::AnimationUpdate),
         );
+        #[cfg(feature = "bevy_ui")]
+        app.add_systems(
+            Update,
+            component_animator_system::<BackgroundColor>.in_set(AnimationSystem::AnimationUpdate),
+        );
 
         #[cfg(feature = "bevy_sprite")]
         app.add_systems(

From 76f0af0e53d2fa603469124d43bba56ffb875aa4 Mon Sep 17 00:00:00 2001
From: Sjael <jakeobrien44@gmail.com>
Date: Tue, 18 Jul 2023 21:45:57 -0700
Subject: [PATCH 2/4] readme

---
 README.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/README.md b/README.md
index 602f80a..9e522b9 100644
--- a/README.md
+++ b/README.md
@@ -124,6 +124,7 @@ The naming scheme for predefined lenses is `"<TargetName><FieldName>Lens"`, wher
 | | [`scale`](https://docs.rs/bevy/0.11.0/bevy/transform/components/struct.Transform.html#structfield.scale) | [`TransformScaleLens`](https://docs.rs/bevy_tweening/latest/bevy_tweening/lens/struct.TransformScaleLens.html) | |
 | [`Sprite`](https://docs.rs/bevy/0.11.0/bevy/sprite/struct.Sprite.html) | [`color`](https://docs.rs/bevy/0.11.0/bevy/sprite/struct.Sprite.html#structfield.color) | [`SpriteColorLens`](https://docs.rs/bevy_tweening/latest/bevy_tweening/lens/struct.SpriteColorLens.html) | `bevy_sprite` |
 | [`Style`](https://docs.rs/bevy/0.11.0/bevy/ui/struct.Style.html) | [`position`](https://docs.rs/bevy/0.11.0/bevy/ui/struct.Style.html#structfield.position) | [`UiPositionLens`](https://docs.rs/bevy_tweening/latest/bevy_tweening/lens/struct.UiPositionLens.html) | `bevy_ui` |
+| ['BackgroundColor'](https://docs.rs/bevy/0.11.0/bevy/ui/struct.BackgroundColor.html)| | [`UiBackgroundColorLens`](https://docs.rs/bevy_tweening/latest/bevy_tweening/lens/struct.UiBackgroundColorLens.html) | `bevy_ui` |
 | [`Text`](https://docs.rs/bevy/0.11.0/bevy/text/struct.Text.html) | [`TextStyle::color`](https://docs.rs/bevy/0.11.0/bevy/text/struct.TextStyle.html#structfield.color) | [`TextColorLens`](https://docs.rs/bevy_tweening/latest/bevy_tweening/lens/struct.TextColorLens.html) | `bevy_text` |
 
 ¹ Shortest-path interpolation between two rotations, using `Quat::slerp()`.

From 379d987f0844d07b77648c334dea3c4e6cd5e036 Mon Sep 17 00:00:00 2001
From: Sjael <jakeobrien44@gmail.com>
Date: Tue, 18 Jul 2023 21:47:49 -0700
Subject: [PATCH 3/4] readme

---
 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 9e522b9..6e4251b 100644
--- a/README.md
+++ b/README.md
@@ -124,7 +124,7 @@ The naming scheme for predefined lenses is `"<TargetName><FieldName>Lens"`, wher
 | | [`scale`](https://docs.rs/bevy/0.11.0/bevy/transform/components/struct.Transform.html#structfield.scale) | [`TransformScaleLens`](https://docs.rs/bevy_tweening/latest/bevy_tweening/lens/struct.TransformScaleLens.html) | |
 | [`Sprite`](https://docs.rs/bevy/0.11.0/bevy/sprite/struct.Sprite.html) | [`color`](https://docs.rs/bevy/0.11.0/bevy/sprite/struct.Sprite.html#structfield.color) | [`SpriteColorLens`](https://docs.rs/bevy_tweening/latest/bevy_tweening/lens/struct.SpriteColorLens.html) | `bevy_sprite` |
 | [`Style`](https://docs.rs/bevy/0.11.0/bevy/ui/struct.Style.html) | [`position`](https://docs.rs/bevy/0.11.0/bevy/ui/struct.Style.html#structfield.position) | [`UiPositionLens`](https://docs.rs/bevy_tweening/latest/bevy_tweening/lens/struct.UiPositionLens.html) | `bevy_ui` |
-| ['BackgroundColor'](https://docs.rs/bevy/0.11.0/bevy/ui/struct.BackgroundColor.html)| | [`UiBackgroundColorLens`](https://docs.rs/bevy_tweening/latest/bevy_tweening/lens/struct.UiBackgroundColorLens.html) | `bevy_ui` |
+| [`BackgroundColor`](https://docs.rs/bevy/0.11.0/bevy/ui/struct.BackgroundColor.html)| | [`UiBackgroundColorLens`](https://docs.rs/bevy_tweening/latest/bevy_tweening/lens/struct.UiBackgroundColorLens.html) | `bevy_ui` |
 | [`Text`](https://docs.rs/bevy/0.11.0/bevy/text/struct.Text.html) | [`TextStyle::color`](https://docs.rs/bevy/0.11.0/bevy/text/struct.TextStyle.html#structfield.color) | [`TextColorLens`](https://docs.rs/bevy_tweening/latest/bevy_tweening/lens/struct.TextColorLens.html) | `bevy_text` |
 
 ¹ Shortest-path interpolation between two rotations, using `Quat::slerp()`.

From faf00d2e138055db6740d5f75fb610a5e7b7a402 Mon Sep 17 00:00:00 2001
From: Jerome Humbert <djeedai@gmail.com>
Date: Sat, 28 Oct 2023 15:24:02 +0100
Subject: [PATCH 4/4] Added CHANGELOG

---
 CHANGELOG.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index e7774f9..4764442 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,12 @@
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+
+### Added
+
+- Added built-in support for the `BackgroundColor` bevy component, under the `bevy_ui` feature.
+
 ## [0.8.0] - 2023-07-12
 
 ### Changed