egui: add integration

src/egui_adapter/egui_oklch.rs

@@ -0,0 +1,37 @@
+use {
+    crate::{
+        cmm::cmm_eotf::Eotf,
+        theme::{Color, Oklab, Oklch},
+    },
+    egui::{Color32, Rgba},
+};
+
+#[expect(dead_code)]
+pub trait Color32Ext {
+    fn to_oklab(self) -> Oklab;
+    fn to_oklch(self) -> Oklch;
+}
+
+impl Color32Ext for Color32 {
+    fn to_oklab(self) -> Oklab {
+        let [r, g, b, a] = self.to_array();
+        Color::from_srgba_premultiplied(r, g, b, a).srgb_to_oklab()
+    }
+
+    fn to_oklch(self) -> Oklch {
+        self.to_oklab().to_oklch()
+    }
+}
+
+impl Into<Color32> for Oklch {
+    fn into(self) -> Color32 {
+        self.to_oklab().into()
+    }
+}
+
+impl Into<Color32> for Oklab {
+    fn into(self) -> Color32 {
+        let [r, g, b, a] = self.to_srgb().to_array(Eotf::Linear);
+        Rgba::from_rgba_premultiplied(r, g, b, a).into()
+    }
+}