added initial margin auto support

use leading and trailing instead of hardcoded ygedge

correctly apply margin auto on crossAxis

enum.py and reformat

reformat

delete formating file

revert unrelated changes

add spaces

apply justifycontent only if there aren't any auto margins

fix enum definition

rerun format

apply auto as default values to width, height and flexBasis to conform with spec

code review and additional tests

added missing language bindings for c# and java

regen tests

added initial margin auto support

use leading and trailing instead of hardcoded ygedge

correctly apply margin auto on crossAxis

enum.py and reformat

delete formating file

revert unrelated changes

add spaces

apply justifycontent only if there aren't any auto margins

fix enum definition

rerun format

apply auto as default values to width, height and flexBasis to conform with spec

code review and additional tests

added missing language bindings for c# and java

fix up rebase

add javascript test

another fix up

java/com/facebook/yoga/YogaNode.java

@@ -378,6 +378,12 @@ public class YogaNode implements YogaNodeAPI<YogaNode> {
     jni_YGNodeStyleSetFlexBasisPercent(mNativePointer, percent);
   }
 
+  private native void jni_YGNodeStyleSetFlexBasisAuto(long nativePointer);
+  @Override
+  public void setFlexBasisAuto() {
+    jni_YGNodeStyleSetFlexBasisAuto(mNativePointer);
+  }
+
   private native Object jni_YGNodeStyleGetMargin(long nativePointer, int edge);
   @Override
   public YogaValue getMargin(YogaEdge edge) {
@@ -401,6 +407,13 @@ public class YogaNode implements YogaNodeAPI<YogaNode> {
     jni_YGNodeStyleSetMarginPercent(mNativePointer, edge.intValue(), percent);
   }
 
+  private native void jni_YGNodeStyleSetMarginAuto(long nativePointer, int edge);
+  @Override
+  public void setMarginAuto(YogaEdge edge) {
+    mHasSetMargin = true;
+    jni_YGNodeStyleSetMarginAuto(mNativePointer, edge.intValue());
+  }
+
   private native Object jni_YGNodeStyleGetPadding(long nativePointer, int edge);
   @Override
   public YogaValue getPadding(YogaEdge edge) {
@@ -481,6 +494,12 @@ public class YogaNode implements YogaNodeAPI<YogaNode> {
     jni_YGNodeStyleSetWidthPercent(mNativePointer, percent);
   }
 
+  private native void jni_YGNodeStyleSetWidthAuto(long nativePointer);
+  @Override
+  public void setWidthAuto() {
+    jni_YGNodeStyleSetWidthAuto(mNativePointer);
+  }
+
   private native Object jni_YGNodeStyleGetHeight(long nativePointer);
   @Override
   public YogaValue getHeight() {
@@ -499,6 +518,12 @@ public class YogaNode implements YogaNodeAPI<YogaNode> {
     jni_YGNodeStyleSetHeightPercent(mNativePointer, percent);
   }
 
+  private native void jni_YGNodeStyleSetHeightAuto(long nativePointer);
+  @Override
+  public void setHeightAuto() {
+    jni_YGNodeStyleSetHeightAuto(mNativePointer);
+  }
+
   private native Object jni_YGNodeStyleGetMinWidth(long nativePointer);
   @Override
   public YogaValue getMinWidth() {

java/com/facebook/yoga/YogaUnit.java

@@ -15,7 +15,8 @@ import com.facebook.proguard.annotations.DoNotStrip;
 public enum YogaUnit {
   UNDEFINED(0),
   PIXEL(1),
-  PERCENT(2);
+  PERCENT(2),
+  AUTO(3);
 
   private int mIntValue;
 
@@ -32,6 +33,7 @@ public enum YogaUnit {
       case 0: return UNDEFINED;
       case 1: return PIXEL;
       case 2: return PERCENT;
+      case 3: return AUTO;
       default: throw new IllegalArgumentException("Unknown enum value: " + value);
     }
   }

java/jni/YGJNI.cpp

@@ -285,6 +285,12 @@ struct JYogaValue : public JavaClass<JYogaValue> {
     YGNodeStyleSet##name##Percent(_jlong2YGNodeRef(nativePointer), static_cast<float>(value));    \
   }
 
+#define YG_NODE_JNI_STYLE_UNIT_PROP_AUTO(name)                                                    \
+  YG_NODE_JNI_STYLE_UNIT_PROP(name)                                                               \
+  void jni_YGNodeStyleSet##name##Auto(alias_ref<jobject>, jlong nativePointer) {                  \
+    YGNodeStyleSet##name##Auto(_jlong2YGNodeRef(nativePointer));                                  \
+  }
+
 #define YG_NODE_JNI_STYLE_EDGE_PROP(javatype, type, name)                                 \
   javatype jni_YGNodeStyleGet##name(alias_ref<jobject>, jlong nativePointer, jint edge) { \
     return (javatype) YGNodeStyleGet##name(_jlong2YGNodeRef(nativePointer),               \
@@ -323,6 +329,15 @@ struct JYogaValue : public JavaClass<JYogaValue> {
                                   static_cast<float>(value));                                       \
   }
 
+#define YG_NODE_JNI_STYLE_EDGE_UNIT_PROP_AUTO(name)                                                 \
+  YG_NODE_JNI_STYLE_EDGE_UNIT_PROP(name)                                                            \
+  void jni_YGNodeStyleSet##name##Auto(alias_ref<jobject>,                                           \
+                                         jlong nativePointer,                                       \
+                                         jint edge) {                                               \
+    YGNodeStyleSet##name##Auto(_jlong2YGNodeRef(nativePointer),                                     \
+                                  static_cast<YGEdge>(edge));                                       \
+  }
+
 YG_NODE_JNI_STYLE_PROP(jint, YGDirection, Direction);
 YG_NODE_JNI_STYLE_PROP(jint, YGFlexDirection, FlexDirection);
 YG_NODE_JNI_STYLE_PROP(jint, YGJustify, JustifyContent);
@@ -339,17 +354,17 @@ void jni_YGNodeStyleSetFlex(alias_ref<jobject>, jlong nativePointer, jfloat valu
 }
 YG_NODE_JNI_STYLE_PROP(jfloat, float, FlexGrow);
 YG_NODE_JNI_STYLE_PROP(jfloat, float, FlexShrink);
-YG_NODE_JNI_STYLE_UNIT_PROP(FlexBasis);
+YG_NODE_JNI_STYLE_UNIT_PROP_AUTO(FlexBasis);
 
 YG_NODE_JNI_STYLE_EDGE_UNIT_PROP(Position);
-YG_NODE_JNI_STYLE_EDGE_UNIT_PROP(Margin);
+YG_NODE_JNI_STYLE_EDGE_UNIT_PROP_AUTO(Margin);
 YG_NODE_JNI_STYLE_EDGE_UNIT_PROP(Padding);
 YG_NODE_JNI_STYLE_EDGE_PROP(jfloat, float, Border);
 
-YG_NODE_JNI_STYLE_UNIT_PROP(Width);
+YG_NODE_JNI_STYLE_UNIT_PROP_AUTO(Width);
 YG_NODE_JNI_STYLE_UNIT_PROP(MinWidth);
 YG_NODE_JNI_STYLE_UNIT_PROP(MaxWidth);
-YG_NODE_JNI_STYLE_UNIT_PROP(Height);
+YG_NODE_JNI_STYLE_UNIT_PROP_AUTO(Height);
 YG_NODE_JNI_STYLE_UNIT_PROP(MinHeight);
 YG_NODE_JNI_STYLE_UNIT_PROP(MaxHeight);
 
@@ -402,9 +417,11 @@ jint JNI_OnLoad(JavaVM *vm, void *) {
                         YGMakeNativeMethod(jni_YGNodeStyleGetFlexBasis),
                         YGMakeNativeMethod(jni_YGNodeStyleSetFlexBasis),
                         YGMakeNativeMethod(jni_YGNodeStyleSetFlexBasisPercent),
+                        YGMakeNativeMethod(jni_YGNodeStyleSetFlexBasisAuto),
                         YGMakeNativeMethod(jni_YGNodeStyleGetMargin),
                         YGMakeNativeMethod(jni_YGNodeStyleSetMargin),
                         YGMakeNativeMethod(jni_YGNodeStyleSetMarginPercent),
+                        YGMakeNativeMethod(jni_YGNodeStyleSetMarginAuto),
                         YGMakeNativeMethod(jni_YGNodeStyleGetPadding),
                         YGMakeNativeMethod(jni_YGNodeStyleSetPadding),
                         YGMakeNativeMethod(jni_YGNodeStyleSetPaddingPercent),
@@ -416,9 +433,11 @@ jint JNI_OnLoad(JavaVM *vm, void *) {
                         YGMakeNativeMethod(jni_YGNodeStyleGetWidth),
                         YGMakeNativeMethod(jni_YGNodeStyleSetWidth),
                         YGMakeNativeMethod(jni_YGNodeStyleSetWidthPercent),
+                        YGMakeNativeMethod(jni_YGNodeStyleSetWidthAuto),
                         YGMakeNativeMethod(jni_YGNodeStyleGetHeight),
                         YGMakeNativeMethod(jni_YGNodeStyleSetHeight),
                         YGMakeNativeMethod(jni_YGNodeStyleSetHeightPercent),
+                        YGMakeNativeMethod(jni_YGNodeStyleSetHeightAuto),
                         YGMakeNativeMethod(jni_YGNodeStyleGetMinWidth),
                         YGMakeNativeMethod(jni_YGNodeStyleSetMinWidth),
                         YGMakeNativeMethod(jni_YGNodeStyleSetMinWidthPercent),

java/tests/com/facebook/yoga/YGMarginTest.java

@@ -425,4 +425,745 @@ public class YGMarginTest {
     assertEquals(45f, root_child1.getLayoutHeight(), 0.0f);
   }
 
+  @Test
+  public void test_margin_auto_bottom() {
+    final YogaNode root = new YogaNode();
+    root.setAlignItems(YogaAlign.CENTER);
+    root.setWidth(200f);
+    root.setHeight(200f);
+
+    final YogaNode root_child0 = new YogaNode();
+    root_child0.setMarginAuto(YogaEdge.BOTTOM);
+    root_child0.setWidth(50f);
+    root_child0.setHeight(50f);
+    root.addChildAt(root_child0, 0);
+
+    final YogaNode root_child1 = new YogaNode();
+    root_child1.setWidth(50f);
+    root_child1.setHeight(50f);
+    root.addChildAt(root_child1, 1);
+    root.setDirection(YogaDirection.LTR);
+    root.calculateLayout();
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(200f, root.getLayoutWidth(), 0.0f);
+    assertEquals(200f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(75f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(0f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(75f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(150f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+
+    root.setDirection(YogaDirection.RTL);
+    root.calculateLayout();
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(200f, root.getLayoutWidth(), 0.0f);
+    assertEquals(200f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(75f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(0f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(75f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(150f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+  }
+
+  @Test
+  public void test_margin_auto_top() {
+    final YogaNode root = new YogaNode();
+    root.setAlignItems(YogaAlign.CENTER);
+    root.setWidth(200f);
+    root.setHeight(200f);
+
+    final YogaNode root_child0 = new YogaNode();
+    root_child0.setMarginAuto(YogaEdge.TOP);
+    root_child0.setWidth(50f);
+    root_child0.setHeight(50f);
+    root.addChildAt(root_child0, 0);
+
+    final YogaNode root_child1 = new YogaNode();
+    root_child1.setWidth(50f);
+    root_child1.setHeight(50f);
+    root.addChildAt(root_child1, 1);
+    root.setDirection(YogaDirection.LTR);
+    root.calculateLayout();
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(200f, root.getLayoutWidth(), 0.0f);
+    assertEquals(200f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(75f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(100f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(75f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(150f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+
+    root.setDirection(YogaDirection.RTL);
+    root.calculateLayout();
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(200f, root.getLayoutWidth(), 0.0f);
+    assertEquals(200f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(75f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(100f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(75f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(150f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+  }
+
+  @Test
+  public void test_margin_auto_bottom_and_top() {
+    final YogaNode root = new YogaNode();
+    root.setAlignItems(YogaAlign.CENTER);
+    root.setWidth(200f);
+    root.setHeight(200f);
+
+    final YogaNode root_child0 = new YogaNode();
+    root_child0.setMarginAuto(YogaEdge.TOP);
+    root_child0.setMarginAuto(YogaEdge.BOTTOM);
+    root_child0.setWidth(50f);
+    root_child0.setHeight(50f);
+    root.addChildAt(root_child0, 0);
+
+    final YogaNode root_child1 = new YogaNode();
+    root_child1.setWidth(50f);
+    root_child1.setHeight(50f);
+    root.addChildAt(root_child1, 1);
+    root.setDirection(YogaDirection.LTR);
+    root.calculateLayout();
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(200f, root.getLayoutWidth(), 0.0f);
+    assertEquals(200f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(75f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(75f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(150f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+
+    root.setDirection(YogaDirection.RTL);
+    root.calculateLayout();
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(200f, root.getLayoutWidth(), 0.0f);
+    assertEquals(200f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(75f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(75f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(150f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+  }
+
+  @Test
+  public void test_margin_auto_bottom_and_top_justify_center() {
+    final YogaNode root = new YogaNode();
+    root.setJustifyContent(YogaJustify.CENTER);
+    root.setWidth(200f);
+    root.setHeight(200f);
+
+    final YogaNode root_child0 = new YogaNode();
+    root_child0.setMarginAuto(YogaEdge.TOP);
+    root_child0.setMarginAuto(YogaEdge.BOTTOM);
+    root_child0.setWidth(50f);
+    root_child0.setHeight(50f);
+    root.addChildAt(root_child0, 0);
+
+    final YogaNode root_child1 = new YogaNode();
+    root_child1.setWidth(50f);
+    root_child1.setHeight(50f);
+    root.addChildAt(root_child1, 1);
+    root.setDirection(YogaDirection.LTR);
+    root.calculateLayout();
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(200f, root.getLayoutWidth(), 0.0f);
+    assertEquals(200f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(0f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(0f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(150f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+
+    root.setDirection(YogaDirection.RTL);
+    root.calculateLayout();
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(200f, root.getLayoutWidth(), 0.0f);
+    assertEquals(200f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(150f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(150f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(150f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+  }
+
+  @Test
+  public void test_margin_auto_mutiple_children_column() {
+    final YogaNode root = new YogaNode();
+    root.setAlignItems(YogaAlign.CENTER);
+    root.setWidth(200f);
+    root.setHeight(200f);
+
+    final YogaNode root_child0 = new YogaNode();
+    root_child0.setMarginAuto(YogaEdge.TOP);
+    root_child0.setWidth(50f);
+    root_child0.setHeight(50f);
+    root.addChildAt(root_child0, 0);
+
+    final YogaNode root_child1 = new YogaNode();
+    root_child1.setMarginAuto(YogaEdge.TOP);
+    root_child1.setWidth(50f);
+    root_child1.setHeight(50f);
+    root.addChildAt(root_child1, 1);
+
+    final YogaNode root_child2 = new YogaNode();
+    root_child2.setWidth(50f);
+    root_child2.setHeight(50f);
+    root.addChildAt(root_child2, 2);
+    root.setDirection(YogaDirection.LTR);
+    root.calculateLayout();
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(200f, root.getLayoutWidth(), 0.0f);
+    assertEquals(200f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(75f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(25f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(75f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(100f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+
+    assertEquals(75f, root_child2.getLayoutX(), 0.0f);
+    assertEquals(150f, root_child2.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child2.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child2.getLayoutHeight(), 0.0f);
+
+    root.setDirection(YogaDirection.RTL);
+    root.calculateLayout();
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(200f, root.getLayoutWidth(), 0.0f);
+    assertEquals(200f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(75f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(25f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(75f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(100f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+
+    assertEquals(75f, root_child2.getLayoutX(), 0.0f);
+    assertEquals(150f, root_child2.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child2.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child2.getLayoutHeight(), 0.0f);
+  }
+
+  @Test
+  public void test_margin_auto_mutiple_children_row() {
+    final YogaNode root = new YogaNode();
+    root.setFlexDirection(YogaFlexDirection.ROW);
+    root.setAlignItems(YogaAlign.CENTER);
+    root.setWidth(200f);
+    root.setHeight(200f);
+
+    final YogaNode root_child0 = new YogaNode();
+    root_child0.setMarginAuto(YogaEdge.RIGHT);
+    root_child0.setWidth(50f);
+    root_child0.setHeight(50f);
+    root.addChildAt(root_child0, 0);
+
+    final YogaNode root_child1 = new YogaNode();
+    root_child1.setMarginAuto(YogaEdge.RIGHT);
+    root_child1.setWidth(50f);
+    root_child1.setHeight(50f);
+    root.addChildAt(root_child1, 1);
+
+    final YogaNode root_child2 = new YogaNode();
+    root_child2.setWidth(50f);
+    root_child2.setHeight(50f);
+    root.addChildAt(root_child2, 2);
+    root.setDirection(YogaDirection.LTR);
+    root.calculateLayout();
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(200f, root.getLayoutWidth(), 0.0f);
+    assertEquals(200f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(0f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(75f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(75f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(75f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+
+    assertEquals(150f, root_child2.getLayoutX(), 0.0f);
+    assertEquals(75f, root_child2.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child2.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child2.getLayoutHeight(), 0.0f);
+
+    root.setDirection(YogaDirection.RTL);
+    root.calculateLayout();
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(200f, root.getLayoutWidth(), 0.0f);
+    assertEquals(200f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(125f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(75f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(50f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(75f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+
+    assertEquals(0f, root_child2.getLayoutX(), 0.0f);
+    assertEquals(75f, root_child2.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child2.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child2.getLayoutHeight(), 0.0f);
+  }
+
+  @Test
+  public void test_margin_auto_left_and_right_column() {
+    final YogaNode root = new YogaNode();
+    root.setFlexDirection(YogaFlexDirection.ROW);
+    root.setAlignItems(YogaAlign.CENTER);
+    root.setWidth(200f);
+    root.setHeight(200f);
+
+    final YogaNode root_child0 = new YogaNode();
+    root_child0.setMarginAuto(YogaEdge.LEFT);
+    root_child0.setMarginAuto(YogaEdge.RIGHT);
+    root_child0.setWidth(50f);
+    root_child0.setHeight(50f);
+    root.addChildAt(root_child0, 0);
+
+    final YogaNode root_child1 = new YogaNode();
+    root_child1.setWidth(50f);
+    root_child1.setHeight(50f);
+    root.addChildAt(root_child1, 1);
+    root.setDirection(YogaDirection.LTR);
+    root.calculateLayout();
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(200f, root.getLayoutWidth(), 0.0f);
+    assertEquals(200f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(50f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(75f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(150f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(75f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+
+    root.setDirection(YogaDirection.RTL);
+    root.calculateLayout();
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(200f, root.getLayoutWidth(), 0.0f);
+    assertEquals(200f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(100f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(75f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(0f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(75f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+  }
+
+  @Test
+  public void test_margin_auto_left_and_right() {
+    final YogaNode root = new YogaNode();
+    root.setWidth(200f);
+    root.setHeight(200f);
+
+    final YogaNode root_child0 = new YogaNode();
+    root_child0.setMarginAuto(YogaEdge.LEFT);
+    root_child0.setMarginAuto(YogaEdge.RIGHT);
+    root_child0.setWidth(50f);
+    root_child0.setHeight(50f);
+    root.addChildAt(root_child0, 0);
+
+    final YogaNode root_child1 = new YogaNode();
+    root_child1.setWidth(50f);
+    root_child1.setHeight(50f);
+    root.addChildAt(root_child1, 1);
+    root.setDirection(YogaDirection.LTR);
+    root.calculateLayout();
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(200f, root.getLayoutWidth(), 0.0f);
+    assertEquals(200f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(75f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(0f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(0f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+
+    root.setDirection(YogaDirection.RTL);
+    root.calculateLayout();
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(200f, root.getLayoutWidth(), 0.0f);
+    assertEquals(200f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(75f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(0f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(150f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+  }
+
+  @Test
+  public void test_margin_auto_left_and_right_column_and_center() {
+    final YogaNode root = new YogaNode();
+    root.setAlignItems(YogaAlign.CENTER);
+    root.setWidth(200f);
+    root.setHeight(200f);
+
+    final YogaNode root_child0 = new YogaNode();
+    root_child0.setMarginAuto(YogaEdge.LEFT);
+    root_child0.setMarginAuto(YogaEdge.RIGHT);
+    root_child0.setWidth(50f);
+    root_child0.setHeight(50f);
+    root.addChildAt(root_child0, 0);
+
+    final YogaNode root_child1 = new YogaNode();
+    root_child1.setWidth(50f);
+    root_child1.setHeight(50f);
+    root.addChildAt(root_child1, 1);
+    root.setDirection(YogaDirection.LTR);
+    root.calculateLayout();
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(200f, root.getLayoutWidth(), 0.0f);
+    assertEquals(200f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(75f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(0f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(75f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+
+    root.setDirection(YogaDirection.RTL);
+    root.calculateLayout();
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(200f, root.getLayoutWidth(), 0.0f);
+    assertEquals(200f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(75f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(0f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(75f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+  }
+
+  @Test
+  public void test_margin_auto_left() {
+    final YogaNode root = new YogaNode();
+    root.setAlignItems(YogaAlign.CENTER);
+    root.setWidth(200f);
+    root.setHeight(200f);
+
+    final YogaNode root_child0 = new YogaNode();
+    root_child0.setMarginAuto(YogaEdge.LEFT);
+    root_child0.setWidth(50f);
+    root_child0.setHeight(50f);
+    root.addChildAt(root_child0, 0);
+
+    final YogaNode root_child1 = new YogaNode();
+    root_child1.setWidth(50f);
+    root_child1.setHeight(50f);
+    root.addChildAt(root_child1, 1);
+    root.setDirection(YogaDirection.LTR);
+    root.calculateLayout();
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(200f, root.getLayoutWidth(), 0.0f);
+    assertEquals(200f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(150f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(0f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(75f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+
+    root.setDirection(YogaDirection.RTL);
+    root.calculateLayout();
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(200f, root.getLayoutWidth(), 0.0f);
+    assertEquals(200f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(150f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(0f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(75f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+  }
+
+  @Test
+  public void test_margin_auto_right() {
+    final YogaNode root = new YogaNode();
+    root.setAlignItems(YogaAlign.CENTER);
+    root.setWidth(200f);
+    root.setHeight(200f);
+
+    final YogaNode root_child0 = new YogaNode();
+    root_child0.setMarginAuto(YogaEdge.RIGHT);
+    root_child0.setWidth(50f);
+    root_child0.setHeight(50f);
+    root.addChildAt(root_child0, 0);
+
+    final YogaNode root_child1 = new YogaNode();
+    root_child1.setWidth(50f);
+    root_child1.setHeight(50f);
+    root.addChildAt(root_child1, 1);
+    root.setDirection(YogaDirection.LTR);
+    root.calculateLayout();
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(200f, root.getLayoutWidth(), 0.0f);
+    assertEquals(200f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(0f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(0f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(75f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+
+    root.setDirection(YogaDirection.RTL);
+    root.calculateLayout();
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(200f, root.getLayoutWidth(), 0.0f);
+    assertEquals(200f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(0f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(0f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(75f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+  }
+
+  @Test
+  public void test_margin_auto_left_and_right_strech() {
+    final YogaNode root = new YogaNode();
+    root.setFlexDirection(YogaFlexDirection.ROW);
+    root.setWidth(200f);
+    root.setHeight(200f);
+
+    final YogaNode root_child0 = new YogaNode();
+    root_child0.setMarginAuto(YogaEdge.LEFT);
+    root_child0.setMarginAuto(YogaEdge.RIGHT);
+    root_child0.setWidth(50f);
+    root_child0.setHeight(50f);
+    root.addChildAt(root_child0, 0);
+
+    final YogaNode root_child1 = new YogaNode();
+    root_child1.setWidth(50f);
+    root_child1.setHeight(50f);
+    root.addChildAt(root_child1, 1);
+    root.setDirection(YogaDirection.LTR);
+    root.calculateLayout();
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(200f, root.getLayoutWidth(), 0.0f);
+    assertEquals(200f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(50f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(0f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(150f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(0f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+
+    root.setDirection(YogaDirection.RTL);
+    root.calculateLayout();
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(200f, root.getLayoutWidth(), 0.0f);
+    assertEquals(200f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(100f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(0f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(0f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(0f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+  }
+
+  @Test
+  public void test_margin_auto_top_and_bottom_strech() {
+    final YogaNode root = new YogaNode();
+    root.setWidth(200f);
+    root.setHeight(200f);
+
+    final YogaNode root_child0 = new YogaNode();
+    root_child0.setMarginAuto(YogaEdge.TOP);
+    root_child0.setMarginAuto(YogaEdge.BOTTOM);
+    root_child0.setWidth(50f);
+    root_child0.setHeight(50f);
+    root.addChildAt(root_child0, 0);
+
+    final YogaNode root_child1 = new YogaNode();
+    root_child1.setWidth(50f);
+    root_child1.setHeight(50f);
+    root.addChildAt(root_child1, 1);
+    root.setDirection(YogaDirection.LTR);
+    root.calculateLayout();
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(200f, root.getLayoutWidth(), 0.0f);
+    assertEquals(200f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(0f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(0f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(150f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+
+    root.setDirection(YogaDirection.RTL);
+    root.calculateLayout();
+
+    assertEquals(0f, root.getLayoutX(), 0.0f);
+    assertEquals(0f, root.getLayoutY(), 0.0f);
+    assertEquals(200f, root.getLayoutWidth(), 0.0f);
+    assertEquals(200f, root.getLayoutHeight(), 0.0f);
+
+    assertEquals(150f, root_child0.getLayoutX(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child0.getLayoutHeight(), 0.0f);
+
+    assertEquals(150f, root_child1.getLayoutX(), 0.0f);
+    assertEquals(150f, root_child1.getLayoutY(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutWidth(), 0.0f);
+    assertEquals(50f, root_child1.getLayoutHeight(), 0.0f);
+  }
+
 }