Fix connection of animated nodes and scroll offset with useNativeDriver.

Libraries/Animated/src/NativeAnimatedHelper.js

@@ -29,11 +29,25 @@ type EventMapping = {
 
 let nativeEventEmitter;
 
+let queueConnections = false;
+let queue = [];
+
 /**
  * Simple wrappers around NativeAnimatedModule to provide flow and autocmplete support for
  * the native module methods
  */
 const API = {
+  enableQueue: function(): void {
+    queueConnections = true;
+  },
+  disableQueue: function(): void {
+    queueConnections = false;
+    for (let q = 0, l = queue.length; q < l; q++) {
+      const args = queue[q];
+      NativeAnimatedModule.connectAnimatedNodes(args[0], args[1]);
+    }
+    queue.length = 0;
+  },
   createAnimatedNode: function(tag: ?number, config: Object): void {
     assertNativeAnimatedModule();
     NativeAnimatedModule.createAnimatedNode(tag, config);
@@ -48,6 +62,10 @@ const API = {
   },
   connectAnimatedNodes: function(parentTag: ?number, childTag: ?number): void {
     assertNativeAnimatedModule();
+    if (queueConnections) {
+      queue.push([parentTag, childTag]);
+      return;
+    }
     NativeAnimatedModule.connectAnimatedNodes(parentTag, childTag);
   },
   disconnectAnimatedNodes: function(
@@ -271,8 +289,7 @@ function transformDataType(value: any): number {
     const radians = (degrees * Math.PI) / 180.0;
     return radians;
   } else {
-    // Assume radians
-    return parseFloat(value) || 0;
+    return value;
   }
 }
 

Libraries/Animated/src/animations/Animation.js

@@ -56,7 +56,9 @@ class Animation {
     onEnd && onEnd(result);
   }
   __startNativeAnimation(animatedValue: AnimatedValue): void {
+    NativeAnimatedHelper.API.enableQueue();
     animatedValue.__makeNative();
+    NativeAnimatedHelper.API.disableQueue();
     this.__nativeId = NativeAnimatedHelper.generateNewAnimationId();
     NativeAnimatedHelper.API.startAnimatingNode(
       this.__nativeId,

Libraries/Animated/src/nodes/AnimatedInterpolation.js

@@ -181,7 +181,7 @@ function colorToRgba(input: string): string {
   return `rgba(${r}, ${g}, ${b}, ${a})`;
 }
 
-const stringShapeRegex = /[0-9\.-]+/g;
+const stringShapeRegex = /[+-]?(?:\d+\.?\d*|\.\d+)(?:[eE][+-]?\d+)?/g;
 
 /**
  * Supports string shapes by extracting numbers so new values can be computed,
@@ -242,10 +242,11 @@ function createInterpolationFromStringOutputRange(
     // ->
     // 'rgba(${interpolations[0](input)}, ${interpolations[1](input)}, ...'
     return outputRange[0].replace(stringShapeRegex, () => {
-      const val = +interpolations[i++](input);
-      const rounded =
-        shouldRound && i < 4 ? Math.round(val) : Math.round(val * 1000) / 1000;
-      return String(rounded);
+      let val = +interpolations[i++](input);
+      if (shouldRound) {
+        val = i < 4 ? Math.round(val) : Math.round(val * 1000) / 1000;
+      }
+      return String(val);
     });
   };
 }

Libraries/Animated/src/nodes/AnimatedNode.js

@@ -49,11 +49,11 @@ class AnimatedNode {
     );
     if (this.__nativeTag == null) {
       const nativeTag: ?number = NativeAnimatedHelper.generateNewNodeTag();
+      this.__nativeTag = nativeTag;
       NativeAnimatedHelper.API.createAnimatedNode(
         nativeTag,
         this.__getNativeConfig(),
       );
-      this.__nativeTag = nativeTag;
     }
     return this.__nativeTag;
   }

Libraries/Animated/src/nodes/AnimatedProps.js

@@ -151,6 +151,7 @@ class AnimatedProps extends AnimatedNode {
     for (const propKey in this._props) {
       const value = this._props[propKey];
       if (value instanceof AnimatedNode) {
+        value.__makeNative();
         propsConfig[propKey] = value.__getNativeTag();
       }
     }

Libraries/Animated/src/nodes/AnimatedStyle.js

@@ -108,7 +108,9 @@ class AnimatedStyle extends AnimatedWithChildren {
     const styleConfig = {};
     for (const styleKey in this._style) {
       if (this._style[styleKey] instanceof AnimatedNode) {
-        styleConfig[styleKey] = this._style[styleKey].__getNativeTag();
+        const style = this._style[styleKey];
+        style.__makeNative();
+        styleConfig[styleKey] = style.__getNativeTag();
       }
       // Non-animated styles are set using `setNativeProps`, no need
       // to pass those as a part of the node config

Libraries/NativeAnimation/Nodes/RCTInterpolationAnimatedNode.m

@@ -9,27 +9,90 @@
 
 #import "RCTAnimationUtils.h"
 
+static NSRegularExpression *regex;
+
 @implementation RCTInterpolationAnimatedNode
 {
   __weak RCTValueAnimatedNode *_parentNode;
   NSArray<NSNumber *> *_inputRange;
   NSArray<NSNumber *> *_outputRange;
+  NSArray<NSArray<NSNumber *> *> *_outputs;
+  NSArray<NSString *> *_soutputRange;
   NSString *_extrapolateLeft;
   NSString *_extrapolateRight;
+  NSUInteger _numVals;
+  bool _hasStringOutput;
+  bool _shouldRound;
+  NSArray<NSTextCheckingResult*> *_matches;
 }
 
 - (instancetype)initWithTag:(NSNumber *)tag
                      config:(NSDictionary<NSString *, id> *)config
 {
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    NSString *fpRegex = @"[+-]?(\\d+\\.?\\d*|\\.\\d+)([eE][+-]?\\d+)?";
+    regex = [NSRegularExpression regularExpressionWithPattern:fpRegex options:NSRegularExpressionCaseInsensitive error:nil];
+  });
   if ((self = [super initWithTag:tag config:config])) {
     _inputRange = [config[@"inputRange"] copy];
     NSMutableArray *outputRange = [NSMutableArray array];
+    NSMutableArray *soutputRange = [NSMutableArray array];
+    NSMutableArray<NSMutableArray<NSNumber *> *> *_outputRanges = [NSMutableArray array];
+
+    _hasStringOutput = NO;
     for (id value in config[@"outputRange"]) {
       if ([value isKindOfClass:[NSNumber class]]) {
         [outputRange addObject:value];
+      } else if ([value isKindOfClass:[NSString class]]) {
+        /**
+         * Supports string shapes by extracting numbers so new values can be computed,
+         * and recombines those values into new strings of the same shape.  Supports
+         * things like:
+         *
+         *   rgba(123, 42, 99, 0.36) // colors
+         *   -45deg                  // values with units
+         */
+        NSMutableArray *output = [NSMutableArray array];
+        [_outputRanges addObject:output];
+        [soutputRange addObject:value];
+
+        _matches = [regex matchesInString:value options:0 range:NSMakeRange(0, [value length])];
+        for (NSTextCheckingResult *match in _matches) {
+          NSString* strNumber = [value substringWithRange:match.range];
+          [output addObject:[NSNumber numberWithDouble:strNumber.doubleValue]];
+        }
+
+        _hasStringOutput = YES;
+        [outputRange addObject:[output objectAtIndex:0]];
+      }
+    }
+    if (_hasStringOutput) {
+      // ['rgba(0, 100, 200, 0)', 'rgba(50, 150, 250, 0.5)']
+      // ->
+      // [
+      //   [0, 50],
+      //   [100, 150],
+      //   [200, 250],
+      //   [0, 0.5],
+      // ]
+      _numVals = [_matches count];
+      NSString *value = [soutputRange objectAtIndex:0];
+      _shouldRound = [value containsString:@"rgb"];
+      _matches = [regex matchesInString:value options:0 range:NSMakeRange(0, [value length])];
+      NSMutableArray<NSMutableArray<NSNumber *> *> *outputs = [NSMutableArray arrayWithCapacity:_numVals];
+      NSUInteger size = [soutputRange count];
+      for (NSUInteger j = 0; j < _numVals; j++) {
+        NSMutableArray *output = [NSMutableArray arrayWithCapacity:size];
+        [outputs addObject:output];
+        for (int i = 0; i < size; i++) {
+          [output addObject:[[_outputRanges objectAtIndex:i] objectAtIndex:j]];
+        }
       }
+      _outputs = [outputs copy];
     }
     _outputRange = [outputRange copy];
+    _soutputRange = [soutputRange copy];
     _extrapolateLeft = config[@"extrapolateLeft"];
     _extrapolateRight = config[@"extrapolateRight"];
   }
@@ -61,11 +124,48 @@ - (void)performUpdate
 
   CGFloat inputValue = _parentNode.value;
 
-  self.value = RCTInterpolateValueInRange(inputValue,
-                                          _inputRange,
-                                          _outputRange,
-                                          _extrapolateLeft,
-                                          _extrapolateRight);
+  CGFloat interpolated = RCTInterpolateValueInRange(inputValue,
+                                                    _inputRange,
+                                                    _outputRange,
+                                                    _extrapolateLeft,
+                                                    _extrapolateRight);
+  self.value = interpolated;
+  if (_hasStringOutput) {
+    // 'rgba(0, 100, 200, 0)'
+    // ->
+    // 'rgba(${interpolations[0](input)}, ${interpolations[1](input)}, ...'
+    if (_numVals > 1) {
+      NSString *text = _soutputRange[0];
+      NSMutableString *formattedText = [NSMutableString stringWithString:text];
+      NSUInteger i = _numVals;
+      for (NSTextCheckingResult *match in [_matches reverseObjectEnumerator]) {
+        CGFloat val = RCTInterpolateValueInRange(inputValue,
+                                                          _inputRange,
+                                                          _outputs[--i],
+                                                          _extrapolateLeft,
+                                                          _extrapolateRight);
+        NSString *str;
+        if (_shouldRound) {
+          // rgba requires that the r,g,b are integers.... so we want to round them, but we *dont* want to
+          // round the opacity (4th column).
+          bool isAlpha = i == 3;
+          CGFloat rounded = isAlpha ? round(val * 1000) / 1000 : round(val);
+          str = isAlpha ? [NSString stringWithFormat:@"%1.3f", rounded] : [NSString stringWithFormat:@"%1.0f", rounded];
+        } else {
+          NSNumber *numberValue = [NSNumber numberWithDouble:val];
+          str = [numberValue stringValue];
+        }
+
+        [formattedText replaceCharactersInRange:[match range] withString:str];
+      }
+      self.animatedObject = formattedText;
+    } else {
+      self.animatedObject = [regex stringByReplacingMatchesInString:_soutputRange[0]
+                                                 options:0
+                                                   range:NSMakeRange(0, _soutputRange[0].length)
+                                            withTemplate:[NSString stringWithFormat:@"%1f", interpolated]];
+    }
+  }
 }
 
 @end

Libraries/NativeAnimation/Nodes/RCTPropsAnimatedNode.m

@@ -110,8 +110,13 @@ - (void)performUpdate
 
     } else if ([parentNode isKindOfClass:[RCTValueAnimatedNode class]]) {
       NSString *property = [self propertyNameForParentTag:parentTag];
-      CGFloat value = [(RCTValueAnimatedNode *)parentNode value];
-      self->_propsDictionary[property] = @(value);
+      id animatedObject = [(RCTValueAnimatedNode *)parentNode animatedObject];
+      if (animatedObject) {
+        self->_propsDictionary[property] = animatedObject;
+      } else {
+        CGFloat value = [(RCTValueAnimatedNode *)parentNode value];
+        self->_propsDictionary[property] = @(value);
+      }
     }
   }
 

Libraries/NativeAnimation/Nodes/RCTValueAnimatedNode.h

@@ -24,6 +24,7 @@
 - (void)extractOffset;
 
 @property (nonatomic, assign) CGFloat value;
+@property (nonatomic, strong) id animatedObject;
 @property (nonatomic, weak) id<RCTValueAnimatedNodeObserver> valueObserver;
 
 @end

RNTester/js/RNTesterList.android.js

@@ -59,6 +59,10 @@ const ComponentExamples: Array<RNTesterExample> = [
     key: 'ScrollViewSimpleExample',
     module: require('./ScrollViewSimpleExample'),
   },
+  {
+    key: 'ScrollViewAnimatedExample',
+    module: require('./ScrollViewAnimatedExample'),
+  },
   {
     key: 'SectionListExample',
     module: require('./SectionListExample'),

RNTester/js/RNTesterList.ios.js

@@ -98,6 +98,11 @@ const ComponentExamples: Array<RNTesterExample> = [
     module: require('./ScrollViewSimpleExample'),
     supportsTVOS: true,
   },
+  {
+    key: 'ScrollViewAnimatedExample',
+    module: require('./ScrollViewAnimatedExample'),
+    supportsTVOS: true,
+  },
   {
     key: 'SafeAreaViewExample',
     module: require('./SafeAreaViewExample'),