1 files changed, 57 insertions, 0 deletions
diff --git a/src/style/colors.rs b/src/style/colors.rs
new file mode 100644
index 0000000..4854da8
--- /dev/null
+++ b/src/style/colors.rs
@@ -0,0 +1,57 @@
+//! Basic predefined colors.
+use super::{RGBAColor, RGBColor};
+
+macro_rules! predefined_color {
+    ($name:ident, $r:expr, $g:expr, $b:expr, $doc:expr) => {
+        #[doc = $doc]
+        pub const $name: RGBColor = RGBColor($r, $g, $b);
+    };
+
+    ($name:ident, $r:expr, $g:expr, $b:expr, $a: expr, $doc:expr) => {
+        #[doc = $doc]
+        pub const $name: RGBAColor = RGBAColor($r, $g, $b, $a);
+    }
+}
+
+predefined_color!(WHITE, 255, 255, 255, "The predefined white color");
+predefined_color!(BLACK, 0, 0, 0, "The predefined black color");
+predefined_color!(RED, 255, 0, 0, "The predefined red color");
+predefined_color!(GREEN, 0, 255, 0, "The predefined green color");
+predefined_color!(BLUE, 0, 0, 255, "The predefined blue color");
+predefined_color!(YELLOW, 255, 255, 0, "The predefined yellow color");
+predefined_color!(CYAN, 0, 255, 255, "The predefined cyan color");
+predefined_color!(MAGENTA, 255, 0, 255, "The predefined magenta color");
+predefined_color!(TRANSPARENT, 0, 0, 0, 0.0, "The predefined transparent");
+
+/// Predefined Color definitions using the [palette](https://docs.rs/palette/) color types
+#[cfg(feature = "palette_ext")]
+pub mod palette_ext {
+    use palette::rgb::Srgb;
+    use palette::Alpha;
+
+    use std::marker::PhantomData;
+
+    macro_rules! predefined_color_pal {
+        ($name:ident, $r:expr, $g:expr, $b:expr, $doc:expr) => {
+            #[doc = $doc]
+            pub const $name: Srgb<u8> = predefined_color_pal!(@gen_c $r, $g, $b);
+        };
+        ($name:ident, $r:expr, $g:expr, $b:expr, $a:expr, $doc:expr) => {
+            #[doc = $doc]
+            pub const $name: Alpha<Srgb<u8>, f64> = Alpha{ alpha: $a, color: predefined_color_pal!(@gen_c $r, $g, $b) };
+        };
+        (@gen_c $r:expr, $g:expr, $b:expr) => {
+            Srgb { red: $r, green: $g, blue: $b, standard: PhantomData }
+        };
+    }
+
+    predefined_color_pal!(WHITE, 255, 255, 255, "The predefined white color");
+    predefined_color_pal!(BLACK, 0, 0, 0, "The predefined black color");
+    predefined_color_pal!(RED, 255, 0, 0, "The predefined red color");
+    predefined_color_pal!(GREEN, 0, 255, 0, "The predefined green color");
+    predefined_color_pal!(BLUE, 0, 0, 255, "The predefined blue color");
+    predefined_color_pal!(YELLOW, 255, 255, 0, "The predefined yellow color");
+    predefined_color_pal!(CYAN, 0, 255, 255, "The predefined cyan color");
+    predefined_color_pal!(MAGENTA, 255, 0, 255, "The predefined magenta color");
+    predefined_color_pal!(TRANSPARENT, 0, 0, 0, 0.0, "The predefined transparent");
+}