Moved setPosition as a method on YGNode

Reviewed By: emilsjolander

Differential Revision: D6683387

fbshipit-source-id: 83f64101faa700933771c69b222056ec2a6b8d1e

Author: priteshrnandgaonkar

ReactCommon/yoga/yoga/YGNode.cpp

@@ -326,6 +326,46 @@ void YGNode::setLayoutDimension(float dimension, int index) {
   layout_.dimensions[index] = dimension;
 }
 
+// If both left and right are defined, then use left. Otherwise return
+// +left or -right depending on which is defined.
+float YGNode::relativePosition(
+    const YGFlexDirection axis,
+    const float axisSize) {
+  return isLeadingPositionDefined(axis) ? getLeadingPosition(axis, axisSize)
+                                        : -getTrailingPosition(axis, axisSize);
+}
+
+void YGNode::setPosition(
+    const YGDirection direction,
+    const float mainSize,
+    const float crossSize,
+    const float parentWidth) {
+  /* Root nodes should be always layouted as LTR, so we don't return negative
+   * values. */
+  const YGDirection directionRespectingRoot =
+      parent_ != nullptr ? direction : YGDirectionLTR;
+  const YGFlexDirection mainAxis =
+      YGResolveFlexDirection(style_.flexDirection, directionRespectingRoot);
+  const YGFlexDirection crossAxis =
+      YGFlexDirectionCross(mainAxis, directionRespectingRoot);
+
+  const float relativePositionMain = relativePosition(mainAxis, mainSize);
+  const float relativePositionCross = relativePosition(crossAxis, crossSize);
+
+  setLayoutPosition(
+      getLeadingMargin(mainAxis, parentWidth) + relativePositionMain,
+      leading[mainAxis]);
+  setLayoutPosition(
+      getTrailingMargin(mainAxis, parentWidth) + relativePositionMain,
+      trailing[mainAxis]);
+  setLayoutPosition(
+      getLeadingMargin(crossAxis, parentWidth) + relativePositionCross,
+      leading[crossAxis]);
+  setLayoutPosition(
+      getTrailingMargin(crossAxis, parentWidth) + relativePositionCross,
+      trailing[crossAxis]);
+}
+
 YGNode::YGNode()
     : context_(nullptr),
       print_(nullptr),

ReactCommon/yoga/yoga/YGNode.h

@@ -31,6 +31,8 @@ struct YGNode {
   bool isDirty_;
   std::array<YGValue, 2> resolvedDimensions_;
 
+  float relativePosition(const YGFlexDirection axis, const float axisSize);
+
  public:
   YGNode();
   ~YGNode();
@@ -110,6 +112,12 @@ struct YGNode {
   void setLayoutHadOverflow(bool hadOverflow);
   void setLayoutDimension(float dimension, int index);
 
+  void setPosition(
+      const YGDirection direction,
+      const float mainSize,
+      const float crossSize,
+      const float parentWidth);
+
   // Other methods
   YGValue marginLeadingValue(const YGFlexDirection axis) const;
   YGValue marginTrailingValue(const YGFlexDirection axis) const;

ReactCommon/yoga/yoga/Yoga.cpp

@@ -1020,16 +1020,6 @@ static void YGNodeSetChildTrailingPosition(const YGNodeRef node,
       trailing[axis]);
 }
 
-// If both left and right are defined, then use left. Otherwise return
-// +left or -right depending on which is defined.
-static float YGNodeRelativePosition(const YGNodeRef node,
-                                    const YGFlexDirection axis,
-                                    const float axisSize) {
-  return node->isLeadingPositionDefined(axis)
-      ? node->getLeadingPosition(axis, axisSize)
-      : -node->getTrailingPosition(axis, axisSize);
-}
-
 static void YGConstrainMaxSizeForMode(const YGNodeRef node,
                                       const enum YGFlexDirection axis,
                                       const float parentAxisSize,
@@ -1054,35 +1044,6 @@ static void YGConstrainMaxSizeForMode(const YGNodeRef node,
   }
 }
 
-static void YGNodeSetPosition(const YGNodeRef node,
-                              const YGDirection direction,
-                              const float mainSize,
-                              const float crossSize,
-                              const float parentWidth) {
-  /* Root nodes should be always layouted as LTR, so we don't return negative values. */
-  const YGDirection directionRespectingRoot =
-      node->getParent() != nullptr ? direction : YGDirectionLTR;
-  const YGFlexDirection mainAxis = YGResolveFlexDirection(
-      node->getStyle().flexDirection, directionRespectingRoot);
-  const YGFlexDirection crossAxis = YGFlexDirectionCross(mainAxis, directionRespectingRoot);
-
-  const float relativePositionMain = YGNodeRelativePosition(node, mainAxis, mainSize);
-  const float relativePositionCross = YGNodeRelativePosition(node, crossAxis, crossSize);
-
-  node->setLayoutPosition(
-      node->getLeadingMargin(mainAxis, parentWidth) + relativePositionMain,
-      leading[mainAxis]);
-  node->setLayoutPosition(
-      node->getTrailingMargin(mainAxis, parentWidth) + relativePositionMain,
-      trailing[mainAxis]);
-  node->setLayoutPosition(
-      node->getLeadingMargin(crossAxis, parentWidth) + relativePositionCross,
-      leading[crossAxis]);
-  node->setLayoutPosition(
-      node->getTrailingMargin(crossAxis, parentWidth) + relativePositionCross,
-      trailing[crossAxis]);
-}
-
 static void YGNodeComputeFlexBasisForChild(const YGNodeRef node,
                                            const YGNodeRef child,
                                            const float width,
@@ -1887,11 +1848,11 @@ static void YGNodelayoutImpl(const YGNodeRef node,
     if (performLayout) {
       // Set the initial position (relative to the parent).
       const YGDirection childDirection = YGNodeResolveDirection(child, direction);
-      YGNodeSetPosition(child,
-                        childDirection,
-                        availableInnerMainDim,
-                        availableInnerCrossDim,
-                        availableInnerWidth);
+      child->setPosition(
+          childDirection,
+          availableInnerMainDim,
+          availableInnerCrossDim,
+          availableInnerWidth);
     }
 
     // Absolute-positioned children don't participate in flex layout. Add them
@@ -3477,12 +3438,8 @@ void YGNodeCalculateLayout(const YGNodeRef node,
           true,
           "initial",
           node->getConfig())) {
-    YGNodeSetPosition(
-        node,
-        node->getLayout().direction,
-        parentWidth,
-        parentHeight,
-        parentWidth);
+    node->setPosition(
+        node->getLayout().direction, parentWidth, parentHeight, parentWidth);
     YGRoundToPixelGrid(node, node->getConfig()->pointScaleFactor, 0.0f, 0.0f);
 
     if (gPrintTree) {