ColorAnimatedNode convert Java->Kotlin (facebook#45752)

Summary:
Pull Request resolved: facebook#45752

# Changelog:

[Internal] -

As in the title.

Differential Revision: D60336724

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/animated/ColorAnimatedNode.kt

@@ -0,0 +1,111 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.animated
+
+import android.content.Context
+import android.graphics.Color
+import com.facebook.react.bridge.ColorPropConverter
+import com.facebook.react.bridge.ReactApplicationContext
+import com.facebook.react.bridge.ReadableMap
+import com.facebook.react.views.view.ColorUtil.normalize
+
+/** Animated node that represents a color. */
+internal class ColorAnimatedNode(
+    config: ReadableMap,
+    private val nativeAnimatedNodesManager: NativeAnimatedNodesManager,
+    private val reactApplicationContext: ReactApplicationContext
+) : AnimatedNode(), AnimatedNodeWithUpdateableConfig {
+  private var rNodeId = 0
+  private var gNodeId = 0
+  private var bNodeId = 0
+  private var aNodeId = 0
+  private var nativeColor: ReadableMap? = null
+  private var nativeColorApplied = false
+
+  init {
+    onUpdateConfig(config)
+  }
+
+  val color: Int
+    get() {
+      tryApplyNativeColor()
+      val rNode = nativeAnimatedNodesManager.getNodeById(rNodeId) as ValueAnimatedNode?
+      val gNode = nativeAnimatedNodesManager.getNodeById(gNodeId) as ValueAnimatedNode?
+      val bNode = nativeAnimatedNodesManager.getNodeById(bNodeId) as ValueAnimatedNode?
+      val aNode = nativeAnimatedNodesManager.getNodeById(aNodeId) as ValueAnimatedNode?
+      val r = rNode?.nodeValue ?: 0.0
+      val g = gNode?.nodeValue ?: 0.0
+      val b = bNode?.nodeValue ?: 0.0
+      val a = aNode?.nodeValue ?: 0.0
+      return normalize(r, g, b, a)
+    }
+
+  override fun onUpdateConfig(config: ReadableMap?) {
+    if (config != null) {
+      rNodeId = config.getInt("r")
+      gNodeId = config.getInt("g")
+      bNodeId = config.getInt("b")
+      aNodeId = config.getInt("a")
+      nativeColor = config.getMap("nativeColor")
+      nativeColorApplied = false
+      tryApplyNativeColor()
+    } else {
+      rNodeId = 0
+      gNodeId = 0
+      bNodeId = 0
+      aNodeId = 0
+      nativeColor = null
+      nativeColorApplied = false
+    }
+  }
+
+  override fun prettyPrint(): String =
+      "ColorAnimatedNode[$tag]: r: $rNodeId  g: $gNodeId b: $bNodeId a: $aNodeId"
+
+  private fun tryApplyNativeColor() {
+    if (nativeColor == null || nativeColorApplied) {
+      return
+    }
+    val context = context ?: return
+    val color = ColorPropConverter.getColor(nativeColor, context)
+    val rNode = nativeAnimatedNodesManager.getNodeById(rNodeId) as ValueAnimatedNode?
+    val gNode = nativeAnimatedNodesManager.getNodeById(gNodeId) as ValueAnimatedNode?
+    val bNode = nativeAnimatedNodesManager.getNodeById(bNodeId) as ValueAnimatedNode?
+    val aNode = nativeAnimatedNodesManager.getNodeById(aNodeId) as ValueAnimatedNode?
+    rNode?.nodeValue = Color.red(color).toDouble()
+    gNode?.nodeValue = Color.green(color).toDouble()
+    bNode?.nodeValue = Color.blue(color).toDouble()
+    aNode?.nodeValue = Color.alpha(color) / 255.0
+    nativeColorApplied = true
+  }
+
+  private val context: Context?
+    get() {
+      // There are cases where the activity may not exist (such as for VRShell panel apps). In this
+      // case we will search for a view associated with a PropsAnimatedNode to get the context.
+      return reactApplicationContext.currentActivity ?: getContextHelper(this)
+    }
+
+  companion object {
+    private fun getContextHelper(node: AnimatedNode): Context? {
+      // Search children depth-first until we get to a PropsAnimatedNode, from which we can
+      // get the view and its context
+      node.children?.let { children ->
+        for (child in children) {
+          return if (child is PropsAnimatedNode) {
+            val view = child.connectedView
+            view?.context
+          } else {
+            getContextHelper(child)
+          }
+        }
+      }
+      return null
+    }
+  }
+}