Missing color.rs.

webrender_traits/src/color.rs

@@ -0,0 +1,64 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#[repr(C)]
+#[derive(Clone, Copy, Debug, Deserialize, PartialEq, Serialize)]
+pub struct ColorF {
+    pub r: f32,
+    pub g: f32,
+    pub b: f32,
+    pub a: f32,
+}
+known_heap_size!(0, ColorF);
+
+#[repr(C)]
+#[derive(Clone, Copy, Hash, Eq, Debug, Deserialize, PartialEq, PartialOrd, Ord, Serialize)]
+pub struct ColorU {
+    pub r: u8,
+    pub g: u8,
+    pub b: u8,
+    pub a: u8,
+}
+
+impl From<ColorF> for ColorU {
+    fn from(color: ColorF) -> ColorU {
+        ColorU {
+            r: ColorU::round_to_int(color.r),
+            g: ColorU::round_to_int(color.g),
+            b: ColorU::round_to_int(color.b),
+            a: ColorU::round_to_int(color.a),
+        }
+    }
+}
+
+impl Into<ColorF> for ColorU {
+    fn into(self) -> ColorF {
+        ColorF {
+            r: self.r as f32 / 255.0,
+            g: self.g as f32 / 255.0,
+            b: self.b as f32 / 255.0,
+            a: self.a as f32 / 255.0,
+        }
+    }
+}
+
+impl ColorU {
+    fn round_to_int(x: f32) -> u8 {
+        debug_assert!((0.0 <= x) && (x <= 1.0));
+        let f = (255.0 * x) + 0.5;
+        let val = f.floor();
+        debug_assert!(val <= 255.0);
+        val as u8
+    }
+
+    pub fn new(r: u8, g: u8, b: u8, a: u8) -> ColorU {
+        ColorU {
+            r: r,
+            g: g,
+            b: b,
+            a: a,
+        }
+    }
+}
+