From 8a8ee33f48ee26968a16052c8cf773cb2c824cc5 Mon Sep 17 00:00:00 2001
From: David Vacca <dvacca@fb.com>
Date: Wed, 15 Aug 2018 17:50:02 -0700
Subject: [PATCH] Fix color conversions for android

Summary: This diff fixes the color conversions for Android

Reviewed By: shergin

Differential Revision: D9093561

fbshipit-source-id: a17e61c58be511bd463dc0b21b632dc24066b8b6
---
 .../fabric/graphics/platform/android/Color.cpp | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/ReactCommon/fabric/graphics/platform/android/Color.cpp b/ReactCommon/fabric/graphics/platform/android/Color.cpp
index 9a7e88ac2..852cfcea9 100644
--- a/ReactCommon/fabric/graphics/platform/android/Color.cpp
+++ b/ReactCommon/fabric/graphics/platform/android/Color.cpp
@@ -11,21 +11,23 @@ namespace facebook {
 namespace react {
 
 SharedColor colorFromComponents(ColorComponents components) {
+  float ratio = 255.9999;
   return SharedColor(
-    ((int)components.alpha & 0xff) << 24 |
-    ((int)components.red & 0xff) << 16 |
-    ((int)components.green & 0xff) << 8 |
-    ((int)components.blue & 0xff)
+    ((int)(components.alpha * ratio) & 0xff) << 24 |
+    ((int)(components.red * ratio) & 0xff) << 16 |
+    ((int)(components.green * ratio) & 0xff) << 8 |
+    ((int)(components.blue * ratio) & 0xff)
   );
 }
 
 ColorComponents colorComponentsFromColor(SharedColor sharedColor) {
+  float ratio = 256;
   Color color = *sharedColor;
   return ColorComponents {
-    (float)((color >> 16) & 0xff),
-    (float)((color >>  8) & 0xff),
-    (float)((color      ) & 0xff),
-    (float)((color >> 24) & 0xff)
+    (float)((color >> 16) & 0xff) / ratio,
+    (float)((color >>  8) & 0xff) / ratio,
+    (float)((color      ) & 0xff) / ratio,
+    (float)((color >> 24) & 0xff) / ratio
   };
 }