facebook · NickGerleman · Jan 10, 2025
diff --git a/...Android/src/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlags.kt b/...Android/src/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlags.kt
@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<a5c3dc485960e5f1d86dbdc657eb12a7>>
+ * @generated SignedSource<<3e10f8d2f623da3b7b502d8fa78f82a4>>
  */
 
 /**
@@ -58,12 +58,6 @@ public object ReactNativeFeatureFlags {
   @JvmStatic
   public fun enableAccumulatedUpdatesInRawPropsAndroid(): Boolean = accessor.enableAccumulatedUpdatesInRawPropsAndroid()
 
-  /**
-   * When enabled, custom line height calculation will be centered from top to bottom.
-   */
-  @JvmStatic
-  public fun enableAndroidLineHeightCentering(): Boolean = accessor.enableAndroidLineHeightCentering()
-
   /**
    * Feature flag to enable the new bridgeless architecture. Note: Enabling this will force enable the following flags: `useTurboModules` & `enableFabricRenderer.
    */

diff --git a/.../main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlagsCxxAccessor.kt b/.../main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlagsCxxAccessor.kt
@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<0fc5a042b5d22ea606980f6b53f2f1ec>>
+ * @generated SignedSource<<497bbb23778fe0f9763e9bfa715ea3aa>>
  */
 
 /**
@@ -25,7 +25,6 @@ public class ReactNativeFeatureFlagsCxxAccessor : ReactNativeFeatureFlagsAccesso
   private var disableEventLoopOnBridgelessCache: Boolean? = null
   private var disableMountItemReorderingAndroidCache: Boolean? = null
   private var enableAccumulatedUpdatesInRawPropsAndroidCache: Boolean? = null
-  private var enableAndroidLineHeightCenteringCache: Boolean? = null
   private var enableBridgelessArchitectureCache: Boolean? = null
   private var enableCppPropsIteratorSetterCache: Boolean? = null
   private var enableDeletionOfUnmountedViewsCache: Boolean? = null
@@ -112,15 +111,6 @@ public class ReactNativeFeatureFlagsCxxAccessor : ReactNativeFeatureFlagsAccesso
     return cached
   }
 
-  override fun enableAndroidLineHeightCentering(): Boolean {
-    var cached = enableAndroidLineHeightCenteringCache
-    if (cached == null) {
-      cached = ReactNativeFeatureFlagsCxxInterop.enableAndroidLineHeightCentering()
-      enableAndroidLineHeightCenteringCache = cached
-    }
-    return cached
-  }
-
   override fun enableBridgelessArchitecture(): Boolean {
     var cached = enableBridgelessArchitectureCache
     if (cached == null) {

diff --git a/...c/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlagsCxxInterop.kt b/...c/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlagsCxxInterop.kt
@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<bc9bae61731d639f4a62b8f7ed92959a>>
+ * @generated SignedSource<<d801f87c988fbd921e2379f236e1711f>>
  */
 
 /**
@@ -38,8 +38,6 @@ public object ReactNativeFeatureFlagsCxxInterop {
 
   @DoNotStrip @JvmStatic public external fun enableAccumulatedUpdatesInRawPropsAndroid(): Boolean
 
-  @DoNotStrip @JvmStatic public external fun enableAndroidLineHeightCentering(): Boolean
-
   @DoNotStrip @JvmStatic public external fun enableBridgelessArchitecture(): Boolean
 
   @DoNotStrip @JvmStatic public external fun enableCppPropsIteratorSetter(): Boolean

diff --git a/...src/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlagsDefaults.kt b/...src/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlagsDefaults.kt
@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<c3b554cdb31bf0a29d45889f51295c74>>
+ * @generated SignedSource<<5de2cfc00f486b7d07266939ce18a397>>
  */
 
 /**
@@ -33,8 +33,6 @@ public open class ReactNativeFeatureFlagsDefaults : ReactNativeFeatureFlagsProvi
 
   override fun enableAccumulatedUpdatesInRawPropsAndroid(): Boolean = false
 
-  override fun enableAndroidLineHeightCentering(): Boolean = true
-
   override fun enableBridgelessArchitecture(): Boolean = false
 
   override fun enableCppPropsIteratorSetter(): Boolean = false

diff --git a/...ain/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlagsLocalAccessor.kt b/...ain/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlagsLocalAccessor.kt
@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<ca5452a19b165ae2d7bfaf6657a94a25>>
+ * @generated SignedSource<<f1ed4107e24ced5d2673bfb065573062>>
  */
 
 /**
@@ -29,7 +29,6 @@ public class ReactNativeFeatureFlagsLocalAccessor : ReactNativeFeatureFlagsAcces
   private var disableEventLoopOnBridgelessCache: Boolean? = null
   private var disableMountItemReorderingAndroidCache: Boolean? = null
   private var enableAccumulatedUpdatesInRawPropsAndroidCache: Boolean? = null
-  private var enableAndroidLineHeightCenteringCache: Boolean? = null
   private var enableBridgelessArchitectureCache: Boolean? = null
   private var enableCppPropsIteratorSetterCache: Boolean? = null
   private var enableDeletionOfUnmountedViewsCache: Boolean? = null
@@ -121,16 +120,6 @@ public class ReactNativeFeatureFlagsLocalAccessor : ReactNativeFeatureFlagsAcces
     return cached
   }
 
-  override fun enableAndroidLineHeightCentering(): Boolean {
-    var cached = enableAndroidLineHeightCenteringCache
-    if (cached == null) {
-      cached = currentProvider.enableAndroidLineHeightCentering()
-      accessedFeatureFlags.add("enableAndroidLineHeightCentering")
-      enableAndroidLineHeightCenteringCache = cached
-    }
-    return cached
-  }
-
   override fun enableBridgelessArchitecture(): Boolean {
     var cached = enableBridgelessArchitectureCache
     if (cached == null) {

diff --git a/...src/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlagsProvider.kt b/...src/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlagsProvider.kt
@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<9c3445b2d25b3b624a8edd8c7dac74b1>>
+ * @generated SignedSource<<3cd802bdd1d383ea0668e43319d53b3f>>
  */
 
 /**
@@ -33,8 +33,6 @@ public interface ReactNativeFeatureFlagsProvider {
 
   @DoNotStrip public fun enableAccumulatedUpdatesInRawPropsAndroid(): Boolean
 
-  @DoNotStrip public fun enableAndroidLineHeightCentering(): Boolean
-
   @DoNotStrip public fun enableBridgelessArchitecture(): Boolean
 
   @DoNotStrip public fun enableCppPropsIteratorSetter(): Boolean

diff --git a/...ive/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactBaseTextShadowNode.java b/...ive/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactBaseTextShadowNode.java
@@ -21,7 +21,6 @@
 import com.facebook.react.bridge.ReadableArray;
 import com.facebook.react.bridge.ReadableMap;
 import com.facebook.react.common.ReactConstants;
-import com.facebook.react.internal.featureflags.ReactNativeFeatureFlags;
 import com.facebook.react.uimanager.IllegalViewOperationException;
 import com.facebook.react.uimanager.LayoutShadowNode;
 import com.facebook.react.uimanager.NativeViewHierarchyOptimizer;
@@ -35,7 +34,6 @@
 import com.facebook.react.views.text.internal.span.CustomLetterSpacingSpan;
 import com.facebook.react.views.text.internal.span.CustomLineHeightSpan;
 import com.facebook.react.views.text.internal.span.CustomStyleSpan;
-import com.facebook.react.views.text.internal.span.LegacyLineHeightSpan;
 import com.facebook.react.views.text.internal.span.ReactAbsoluteSizeSpan;
 import com.facebook.react.views.text.internal.span.ReactBackgroundColorSpan;
 import com.facebook.react.views.text.internal.span.ReactClickableSpan;
@@ -231,11 +229,7 @@ private static void buildSpannedFromShadowNode(
       if (!Float.isNaN(effectiveLineHeight)
           && (parentTextAttributes == null
               || parentTextAttributes.getEffectiveLineHeight() != effectiveLineHeight)) {
-        if (ReactNativeFeatureFlags.enableAndroidLineHeightCentering()) {
-          ops.add(new SetSpanOperation(start, end, new CustomLineHeightSpan(effectiveLineHeight)));
-        } else {
-          ops.add(new SetSpanOperation(start, end, new LegacyLineHeightSpan(effectiveLineHeight)));
-        }
+        ops.add(new SetSpanOperation(start, end, new CustomLineHeightSpan(effectiveLineHeight)));
       }
       ops.add(new SetSpanOperation(start, end, new ReactTagSpan(textShadowNode.getReactTag())));
     }

diff --git a/...ct-native/ReactAndroid/src/main/java/com/facebook/react/views/text/TextLayoutManager.java b/...ct-native/ReactAndroid/src/main/java/com/facebook/react/views/text/TextLayoutManager.java
@@ -32,14 +32,12 @@
 import com.facebook.react.common.ReactConstants;
 import com.facebook.react.common.build.ReactBuildConfig;
 import com.facebook.react.common.mapbuffer.MapBuffer;
-import com.facebook.react.internal.featureflags.ReactNativeFeatureFlags;
 import com.facebook.react.uimanager.PixelUtil;
 import com.facebook.react.uimanager.ReactAccessibilityDelegate.AccessibilityRole;
 import com.facebook.react.uimanager.ReactAccessibilityDelegate.Role;
 import com.facebook.react.views.text.internal.span.CustomLetterSpacingSpan;
 import com.facebook.react.views.text.internal.span.CustomLineHeightSpan;
 import com.facebook.react.views.text.internal.span.CustomStyleSpan;
-import com.facebook.react.views.text.internal.span.LegacyLineHeightSpan;
 import com.facebook.react.views.text.internal.span.ReactAbsoluteSizeSpan;
 import com.facebook.react.views.text.internal.span.ReactBackgroundColorSpan;
 import com.facebook.react.views.text.internal.span.ReactClickableSpan;
@@ -319,15 +317,9 @@ private static void buildSpannableFromFragments(
                       textAttributes.mTextShadowColor)));
         }
         if (!Float.isNaN(textAttributes.getEffectiveLineHeight())) {
-          if (ReactNativeFeatureFlags.enableAndroidLineHeightCentering()) {
-            ops.add(
-                new SetSpanOperation(
-                    start, end, new CustomLineHeightSpan(textAttributes.getEffectiveLineHeight())));
-          } else {
-            ops.add(
-                new SetSpanOperation(
-                    start, end, new LegacyLineHeightSpan(textAttributes.getEffectiveLineHeight())));
-          }
+          ops.add(
+              new SetSpanOperation(
+                  start, end, new CustomLineHeightSpan(textAttributes.getEffectiveLineHeight())));
         }
 
         ops.add(new SetSpanOperation(start, end, new ReactTagSpan(reactTag)));

diff --git a/...Android/src/main/java/com/facebook/react/views/text/internal/span/LegacyLineHeightSpan.kt b/...Android/src/main/java/com/facebook/react/views/text/internal/span/LegacyLineHeightSpan.kt
diff --git a/...t-native/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactEditText.java b/...t-native/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactEditText.java
@@ -50,7 +50,6 @@
 import com.facebook.react.bridge.ReactSoftExceptionLogger;
 import com.facebook.react.common.ReactConstants;
 import com.facebook.react.common.build.ReactBuildConfig;
-import com.facebook.react.internal.featureflags.ReactNativeFeatureFlags;
 import com.facebook.react.uimanager.BackgroundStyleApplicator;
 import com.facebook.react.uimanager.LengthPercentage;
 import com.facebook.react.uimanager.LengthPercentageType;
@@ -72,7 +71,6 @@
 import com.facebook.react.views.text.internal.span.CustomLetterSpacingSpan;
 import com.facebook.react.views.text.internal.span.CustomLineHeightSpan;
 import com.facebook.react.views.text.internal.span.CustomStyleSpan;
-import com.facebook.react.views.text.internal.span.LegacyLineHeightSpan;
 import com.facebook.react.views.text.internal.span.ReactAbsoluteSizeSpan;
 import com.facebook.react.views.text.internal.span.ReactBackgroundColorSpan;
 import com.facebook.react.views.text.internal.span.ReactForegroundColorSpan;
@@ -873,13 +871,7 @@ private void addSpansFromStyleAttributes(SpannableStringBuilder workingText) {
 
     float lineHeight = mTextAttributes.getEffectiveLineHeight();
     if (!Float.isNaN(lineHeight)) {
-      if (ReactNativeFeatureFlags.enableAndroidLineHeightCentering()) {
-        workingText.setSpan(
-            new CustomLineHeightSpan(lineHeight), 0, workingText.length(), spanFlags);
-      } else {
-        workingText.setSpan(
-            new LegacyLineHeightSpan(lineHeight), 0, workingText.length(), spanFlags);
-      }
+      workingText.setSpan(new CustomLineHeightSpan(lineHeight), 0, workingText.length(), spanFlags);
     }
   }
 

diff --git a/...ative/ReactAndroid/src/main/jni/react/featureflags/JReactNativeFeatureFlagsCxxInterop.cpp b/...ative/ReactAndroid/src/main/jni/react/featureflags/JReactNativeFeatureFlagsCxxInterop.cpp
@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<1f6ba072411c3ce3fc3659677da540c1>>
+ * @generated SignedSource<<7c3853858da56eb5f471abccf9dcbf55>>
  */
 
 /**
@@ -69,12 +69,6 @@ class ReactNativeFeatureFlagsProviderHolder
     return method(javaProvider_);
   }
 
-  bool enableAndroidLineHeightCentering() override {
-    static const auto method =
-        getReactNativeFeatureFlagsProviderJavaClass()->getMethod<jboolean()>("enableAndroidLineHeightCentering");
-    return method(javaProvider_);
-  }
-
   bool enableBridgelessArchitecture() override {
     static const auto method =
         getReactNativeFeatureFlagsProviderJavaClass()->getMethod<jboolean()>("enableBridgelessArchitecture");
@@ -344,11 +338,6 @@ bool JReactNativeFeatureFlagsCxxInterop::enableAccumulatedUpdatesInRawPropsAndro
   return ReactNativeFeatureFlags::enableAccumulatedUpdatesInRawPropsAndroid();
 }
 
-bool JReactNativeFeatureFlagsCxxInterop::enableAndroidLineHeightCentering(
-    facebook::jni::alias_ref<JReactNativeFeatureFlagsCxxInterop> /*unused*/) {
-  return ReactNativeFeatureFlags::enableAndroidLineHeightCentering();
-}
-
 bool JReactNativeFeatureFlagsCxxInterop::enableBridgelessArchitecture(
     facebook::jni::alias_ref<JReactNativeFeatureFlagsCxxInterop> /*unused*/) {
   return ReactNativeFeatureFlags::enableBridgelessArchitecture();
@@ -595,9 +584,6 @@ void JReactNativeFeatureFlagsCxxInterop::registerNatives() {
       makeNativeMethod(
         "enableAccumulatedUpdatesInRawPropsAndroid",
         JReactNativeFeatureFlagsCxxInterop::enableAccumulatedUpdatesInRawPropsAndroid),
-      makeNativeMethod(
-        "enableAndroidLineHeightCentering",
-        JReactNativeFeatureFlagsCxxInterop::enableAndroidLineHeightCentering),
       makeNativeMethod(
         "enableBridgelessArchitecture",
         JReactNativeFeatureFlagsCxxInterop::enableBridgelessArchitecture),

diff --git a/...-native/ReactAndroid/src/main/jni/react/featureflags/JReactNativeFeatureFlagsCxxInterop.h b/...-native/ReactAndroid/src/main/jni/react/featureflags/JReactNativeFeatureFlagsCxxInterop.h
@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<6a9b64bcb7d6e6115d3125c0fad09f19>>
+ * @generated SignedSource<<77b4ed5aa33290ba9da1719544e974cb>>
  */
 
 /**
@@ -45,9 +45,6 @@ class JReactNativeFeatureFlagsCxxInterop
   static bool enableAccumulatedUpdatesInRawPropsAndroid(
     facebook::jni::alias_ref<JReactNativeFeatureFlagsCxxInterop>);
 
-  static bool enableAndroidLineHeightCentering(
-    facebook::jni::alias_ref<JReactNativeFeatureFlagsCxxInterop>);
-
   static bool enableBridgelessArchitecture(
     facebook::jni::alias_ref<JReactNativeFeatureFlagsCxxInterop>);
 

diff --git a/packages/react-native/ReactCommon/react/featureflags/ReactNativeFeatureFlags.cpp b/packages/react-native/ReactCommon/react/featureflags/ReactNativeFeatureFlags.cpp
@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<406e907a7652665aebfb8e44010068e2>>
+ * @generated SignedSource<<7d301656072183649246db8fa738fc4d>>
  */
 
 /**
@@ -46,10 +46,6 @@ bool ReactNativeFeatureFlags::enableAccumulatedUpdatesInRawPropsAndroid() {
   return getAccessor().enableAccumulatedUpdatesInRawPropsAndroid();
 }
 
-bool ReactNativeFeatureFlags::enableAndroidLineHeightCentering() {
-  return getAccessor().enableAndroidLineHeightCentering();
-}
-
 bool ReactNativeFeatureFlags::enableBridgelessArchitecture() {
   return getAccessor().enableBridgelessArchitecture();
 }