Fixed text background color

Summary:
@public

This fixes an issue with the containerBackgroundColor property of `<Text>` nodes, where containerBackgroundColor was being overridden by the backgroundColor. I also fixed up the example so that it demonstrates the feature more clearly.

Test Plan:
* Check UIExplorer text example
* Run Catalyst snapshot tests and check MAdMan, Groups

Examples/UIExplorer/TextExample.ios.js

@@ -300,17 +300,17 @@ exports.examples = [
   title: 'containerBackgroundColor attribute',
   render: function() {
     return (
-      <View>
-        <View style={{flexDirection: 'row', height: 85}}>
-          <View style={{backgroundColor: '#ffaaaa', width: 150}} />
-          <View style={{backgroundColor: '#aaaaff', width: 150}} />
+      <View style={{backgroundColor: 'yellow'}}>
+        <View style={{flexDirection: 'row', position: 'absolute', height: 80}}>
+          <View style={{backgroundColor: '#ffaaaa', width: 140}} />
+          <View style={{backgroundColor: '#aaaaff', width: 140}} />
         </View>
-        <Text style={[styles.backgroundColorText, {top: -80}]}>
+        <Text style={styles.backgroundColorText}>
           Default containerBackgroundColor (inherited) + backgroundColor wash
         </Text>
         <Text style={[
           styles.backgroundColorText,
-          {top: -70, containerBackgroundColor: 'transparent'}]}>
+          {marginBottom: 5, containerBackgroundColor: 'transparent'}]}>
           {"containerBackgroundColor: 'transparent' + backgroundColor wash"}
         </Text>
       </View>
@@ -322,13 +322,13 @@ exports.examples = [
     return (
       <View>
         <Text numberOfLines={1}>
-          Maximum of one line no matter now much I write here. If I keep writing it{"'"}ll just truncate after one line
+          Maximum of one line, no matter how much I write here. If I keep writing, it{"'"}ll just truncate after one line.
         </Text>
         <Text numberOfLines={2} style={{marginTop: 20}}>
-          Maximum of two lines no matter now much I write here. If I keep writing it{"'"}ll just truncate after two lines
+          Maximum of two lines, no matter how much I write here. If I keep writing, it{"'"}ll just truncate after two lines.
         </Text>
         <Text style={{marginTop: 20}}>
-          No maximum lines specified no matter now much I write here. If I keep writing it{"'"}ll just keep going and going
+          No maximum lines specified, no matter how much I write here. If I keep writing, it{"'"}ll just keep going and going.
         </Text>
       </View>
     );
@@ -337,7 +337,8 @@ exports.examples = [
 
 var styles = StyleSheet.create({
   backgroundColorText: {
-    left: 5,
+    margin: 5,
+    marginBottom: 0,
     backgroundColor: 'rgba(100, 100, 100, 0.3)'
   },
   entity: {

Examples/UIExplorer/UIExplorerBlock.js

@@ -77,13 +77,7 @@ var styles = StyleSheet.create({
     paddingHorizontal: 10,
     paddingVertical: 5,
   },
-  titleRow: {
-    flexDirection: 'row',
-    justifyContent: 'space-between',
-    backgroundColor: 'transparent',
-  },
   titleText: {
-    backgroundColor: 'transparent',
     fontSize: 14,
     fontWeight: '500',
   },
@@ -101,8 +95,7 @@ var styles = StyleSheet.create({
     height: 8,
   },
   children: {
-    backgroundColor: 'transparent',
-    padding: 10,
+    margin: 10,
   }
 });
 

Libraries/Text/RCTShadowText.m

@@ -125,13 +125,13 @@ static css_dim_t RCTMeasure(void *context, float width)
   }
 
   if (_color) {
-    [self _addAttribute:NSForegroundColorAttributeName withValue:self.color toAttributedString:attributedString];
+    [self _addAttribute:NSForegroundColorAttributeName withValue:_color toAttributedString:attributedString];
   }
   if (_isHighlighted) {
     [self _addAttribute:RCTIsHighlightedAttributeName withValue:@YES toAttributedString:attributedString];
   }
   if (_textBackgroundColor) {
-    [self _addAttribute:NSBackgroundColorAttributeName withValue:self.textBackgroundColor toAttributedString:attributedString];
+    [self _addAttribute:NSBackgroundColorAttributeName withValue:_textBackgroundColor toAttributedString:attributedString];
   }
 
   UIFont *font = [RCTConvert UIFont:nil withFamily:fontFamily size:fontSize weight:fontWeight style:fontStyle];

Libraries/Text/RCTText.m

@@ -32,6 +32,15 @@
   return self;
 }
 
+- (void)reactSetFrame:(CGRect)frame
+{
+  // Text looks super weird if its frame is animated.
+  // This disables the frame animation, without affecting opacity, etc.
+  [UIView performWithoutAnimation:^{
+    [super reactSetFrame:frame];
+  }];
+}
+
 - (void)setTextStorage:(NSTextStorage *)textStorage
 {
   _textStorage = textStorage;

Libraries/Text/RCTTextManager.m

@@ -34,6 +34,7 @@ RCT_EXPORT_MODULE()
 
 #pragma mark - View properties
 
+RCT_IGNORE_VIEW_PROPERTY(backgroundColor);
 RCT_REMAP_VIEW_PROPERTY(containerBackgroundColor, backgroundColor, UIColor)
 
 #pragma mark - Shadow properties

React/Base/RCTConvert.h

@@ -109,8 +109,8 @@ typedef NSArray CGColorArray;
 typedef id NSPropertyList;
 + (NSPropertyList)NSPropertyList:(id)json;
 
-typedef BOOL css_overflow;
-+ (css_overflow)css_overflow:(id)json;
+typedef BOOL css_clip_t;
++ (css_clip_t)css_clip_t:(id)json;
 + (css_flex_direction_t)css_flex_direction_t:(id)json;
 + (css_justify_t)css_justify_t:(id)json;
 + (css_align_t)css_align_t:(id)json;

React/Base/RCTConvert.m

@@ -916,10 +916,10 @@ static id RCTConvertPropertyListValue(id json)
   return RCTConvertPropertyListValue(json);
 }
 
-RCT_ENUM_CONVERTER(css_overflow, (@{
-  @"hidden": @NO,
-  @"visible": @YES
-}), YES, boolValue)
+RCT_ENUM_CONVERTER(css_clip_t, (@{
+  @"hidden": @YES,
+  @"visible": @NO
+}), NO, boolValue)
 
 RCT_ENUM_CONVERTER(css_flex_direction_t, (@{
   @"row": @(CSS_FLEX_DIRECTION_ROW),

React/Views/RCTShadowView.m

@@ -13,6 +13,7 @@
 #import "RCTLog.h"
 #import "RCTSparseArray.h"
 #import "RCTUtils.h"
+#import "UIView+React.h"
 
 typedef void (^RCTActionBlock)(RCTShadowView *shadowViewSelf, id value);
 typedef void (^RCTResetActionBlock)(RCTShadowView *shadowViewSelf);
@@ -38,7 +39,6 @@ typedef enum {
   NSMutableArray *_reactSubviews;
   BOOL _recomputePadding;
   BOOL _recomputeMargin;
-  BOOL _isBGColorExplicitlySet;
   float _paddingMetaProps[META_PROP_COUNT];
   float _marginMetaProps[META_PROP_COUNT];
 }
@@ -167,22 +167,20 @@ static void RCTProcessMetaProps(const float metaProps[META_PROP_COUNT], float st
 
 - (NSDictionary *)processBackgroundColor:(NSMutableSet *)applierBlocks parentProperties:(NSDictionary *)parentProperties
 {
-  if (!_isBGColorExplicitlySet) {
+  if (!_backgroundColor) {
     UIColor *parentBackgroundColor = parentProperties[RCTBackgroundColorProp];
-    if (parentBackgroundColor && ![_backgroundColor isEqual:parentBackgroundColor]) {
-      _backgroundColor = parentBackgroundColor;
+    if (parentBackgroundColor) {
       [applierBlocks addObject:^(RCTSparseArray *viewRegistry) {
         UIView *view = viewRegistry[_reactTag];
-        view.backgroundColor = parentBackgroundColor;
+        [view reactSetInheritedBackgroundColor:parentBackgroundColor];
       }];
     }
-  }
-  if (_isBGColorExplicitlySet) {
+  } else {
     // Update parent properties for children
     NSMutableDictionary *properties = [NSMutableDictionary dictionaryWithDictionary:parentProperties];
     CGFloat alpha = CGColorGetAlpha(_backgroundColor.CGColor);
     if (alpha < 1.0) {
-      // If we see partial transparency, start propagating full transparency
+      // If bg is non-opaque, don't propagate further
       properties[RCTBackgroundColorProp] = [UIColor clearColor];
     } else {
       properties[RCTBackgroundColorProp] = _backgroundColor;
@@ -516,7 +514,6 @@ RCT_STYLE_PROPERTY(FlexWrap, flexWrap, flex_wrap, css_wrap_type_t)
 - (void)setBackgroundColor:(UIColor *)color
 {
   _backgroundColor = color;
-  _isBGColorExplicitlySet = YES;
   [self dirtyPropagation];
 }
 

React/Views/RCTViewManager.m

@@ -102,10 +102,7 @@ RCT_REMAP_VIEW_PROPERTY(shadowOffset, layer.shadowOffset, CGSize);
 RCT_REMAP_VIEW_PROPERTY(shadowOpacity, layer.shadowOpacity, float)
 RCT_REMAP_VIEW_PROPERTY(shadowRadius, layer.shadowRadius, CGFloat)
 RCT_REMAP_VIEW_PROPERTY(transformMatrix, layer.transform, CATransform3D)
-RCT_CUSTOM_VIEW_PROPERTY(overflow, css_overflow, RCTView)
-{
-  view.clipsToBounds = json ? ![RCTConvert css_overflow:json] : defaultView.clipsToBounds;
-}
+RCT_REMAP_VIEW_PROPERTY(overflow, clipsToBounds, css_clip_t)
 RCT_CUSTOM_VIEW_PROPERTY(pointerEvents, RCTPointerEvents, RCTView)
 {
   if ([view respondsToSelector:@selector(setPointerEvents:)]) {
@@ -260,7 +257,7 @@ RCT_EXPORT_SHADOW_PROPERTY(paddingBottom, CGFloat)
 RCT_EXPORT_SHADOW_PROPERTY(paddingLeft, CGFloat)
 RCT_EXPORT_SHADOW_PROPERTY(paddingVertical, CGFloat)
 RCT_EXPORT_SHADOW_PROPERTY(paddingHorizontal, CGFloat)
-RCT_EXPORT_SHADOW_PROPERTY(padding, CGFloat);
+RCT_EXPORT_SHADOW_PROPERTY(padding, CGFloat)
 
 RCT_EXPORT_SHADOW_PROPERTY(flex, CGFloat)
 RCT_EXPORT_SHADOW_PROPERTY(flexDirection, css_flex_direction_t)

React/Views/UIView+React.h

@@ -21,6 +21,11 @@
  */
 - (void)reactSetFrame:(CGRect)frame;
 
+/**
+ * Used to improve performance when compositing views with translucent content.
+ */
+- (void)reactSetInheritedBackgroundColor:(UIColor *)inheritedBackgroundColor;
+
 /**
  * This method finds and returns the containing view controller for the view.
  */

React/Views/UIView+React.m

@@ -83,6 +83,11 @@
   self.layer.bounds = bounds;
 }
 
+- (void)reactSetInheritedBackgroundColor:(UIColor *)inheritedBackgroundColor
+{
+  self.backgroundColor = inheritedBackgroundColor;
+}
+
 - (UIViewController *)backingViewController
 {
   id responder = [self nextResponder];