Revert D21635473: LayoutAnimations: allow Paragraph props to be interpolated

Differential Revision:
D21635473

Original commit changeset: 470f43fd24a6

fbshipit-source-id: 8507b0aaead2c0ebbdd09077db99e5e44da175ab

Author: mystique1729

ReactCommon/fabric/components/text/paragraph/ParagraphComponentDescriptor.h

@@ -9,7 +9,6 @@
 
 #include "ParagraphShadowNode.h"
 
-#include <react/components/view/ViewPropsInterpolation.h>
 #include <react/config/ReactNativeConfig.h>
 #include <react/core/ConcreteComponentDescriptor.h>
 #include <react/textlayoutmanager/TextLayoutManager.h>
@@ -31,18 +30,6 @@ class ParagraphComponentDescriptor final
     textLayoutManager_ = std::make_shared<TextLayoutManager>(contextContainer_);
   }
 
-  virtual SharedProps interpolateProps(
-      float animationProgress,
-      const SharedProps &props,
-      const SharedProps &newProps) const override {
-    SharedProps interpolatedPropsShared = cloneProps(newProps, {});
-
-    interpolateViewProps(
-        animationProgress, props, newProps, interpolatedPropsShared);
-
-    return interpolatedPropsShared;
-  };
-
  protected:
   void adopt(UnsharedShadowNode shadowNode) const override {
     ConcreteComponentDescriptor::adopt(shadowNode);

ReactCommon/fabric/components/view/ViewComponentDescriptor.h

@@ -10,7 +10,6 @@
 #include <react/components/view/ViewShadowNode.h>
 #include <react/core/ConcreteComponentDescriptor.h>
 #include "ViewProps.h"
-#include "ViewPropsInterpolation.h"
 
 namespace facebook {
 namespace react {
@@ -25,10 +24,34 @@ class ViewComponentDescriptor
       float animationProgress,
       const SharedProps &props,
       const SharedProps &newProps) const override {
-    SharedProps interpolatedPropsShared = cloneProps(newProps, {});
+    ViewProps const *oldViewProps =
+        dynamic_cast<ViewProps const *>(props.get());
+    ViewProps const *newViewProps =
+        dynamic_cast<ViewProps const *>(newProps.get());
 
-    interpolateViewProps(
-        animationProgress, props, newProps, interpolatedPropsShared);
+    SharedProps interpolatedPropsShared = cloneProps(newProps, {});
+    ViewProps *interpolatedProps = const_cast<ViewProps *>(
+        dynamic_cast<ViewProps const *>(interpolatedPropsShared.get()));
+
+    interpolatedProps->opacity = oldViewProps->opacity +
+        (newViewProps->opacity - oldViewProps->opacity) * animationProgress;
+
+    interpolatedProps->transform = Transform::Interpolate(
+        animationProgress, oldViewProps->transform, newViewProps->transform);
+
+    // Android uses RawProps, not props, to update props on the platform...
+    // Since interpolated props don't interpolate at all using RawProps, we need
+    // to "re-hydrate" raw props after interpolating. This is what actually gets
+    // sent to the mounting layer. This is a temporary hack, only for platforms
+    // that use RawProps/folly::dynamic instead of concrete props on the
+    // mounting layer. Once we can remove this, we should change `rawProps` to
+    // be const again.
+#ifdef ANDROID
+    interpolatedProps->rawProps["opacity"] = interpolatedProps->opacity;
+
+    interpolatedProps->rawProps["transform"] =
+        (folly::dynamic)interpolatedProps->transform;
+#endif
 
     return interpolatedPropsShared;
   };