Expose Unsnapped Dimensions

tests/YGRoundingFunctionTest.cpp

@@ -161,3 +161,23 @@ TEST(YogaTest, per_node_point_scale_factor) {
   YGConfigFree(config2);
   YGConfigFree(config3);
 }
+
+TEST(YogaTest, raw_layout_dimensions) {
+  YGConfigRef config = YGConfigNew();
+  YGConfigSetPointScaleFactor(config, 0.5f);
+
+  YGNodeRef root = YGNodeNewWithConfig(config);
+  YGNodeStyleSetWidth(root, 11.5f);
+  YGNodeStyleSetHeight(root, 9.5f);
+
+  YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR);
+
+  ASSERT_EQ(YGNodeLayoutGetWidth(root), 12.0f);
+  ASSERT_EQ(YGNodeLayoutGetHeight(root), 10.0f);
+  ASSERT_EQ(YGNodeLayoutGetRawWidth(root), 11.5f);
+  ASSERT_EQ(YGNodeLayoutGetRawHeight(root), 9.5f);
+
+  YGNodeFreeRecursive(root);
+
+  YGConfigFree(config);
+}

yoga/YGNodeLayout.cpp

@@ -90,3 +90,11 @@ float YGNodeLayoutGetPadding(YGNodeConstRef node, YGEdge edge) {
   return getResolvedLayoutProperty<&LayoutResults::padding>(
       node, scopedEnum(edge));
 }
+
+float YGNodeLayoutGetRawHeight(YGNodeConstRef node) {
+  return resolveRef(node)->getLayout().rawDimension(Dimension::Height);
+}
+
+float YGNodeLayoutGetRawWidth(YGNodeConstRef node) {
+  return resolveRef(node)->getLayout().rawDimension(Dimension::Width);
+}

yoga/YGNodeLayout.h

@@ -32,4 +32,14 @@ YG_EXPORT float YGNodeLayoutGetMargin(YGNodeConstRef node, YGEdge edge);
 YG_EXPORT float YGNodeLayoutGetBorder(YGNodeConstRef node, YGEdge edge);
 YG_EXPORT float YGNodeLayoutGetPadding(YGNodeConstRef node, YGEdge edge);
 
+/**
+ * Return the measured height of the node, before layout rounding
+ */
+YG_EXPORT float YGNodeLayoutGetRawHeight(YGNodeConstRef node);
+
+/**
+ * Return the measured width of the node, before layout rounding
+ */
+YG_EXPORT float YGNodeLayoutGetRawWidth(YGNodeConstRef node);
+
 YG_EXTERN_C_END

yoga/algorithm/PixelGrid.cpp

@@ -106,25 +106,25 @@ void roundLayoutResultsToPixelGrid(
     const bool hasFractionalHeight =
         !yoga::inexactEquals(round(scaledNodeHeight), scaledNodeHeight);
 
-    node->setLayoutDimension(
+    node->getLayout().setDimension(
+        Dimension::Width,
         roundValueToPixelGrid(
             absoluteNodeRight,
             pointScaleFactor,
             (textRounding && hasFractionalWidth),
             (textRounding && !hasFractionalWidth)) -
             roundValueToPixelGrid(
-                absoluteNodeLeft, pointScaleFactor, false, textRounding),
-        Dimension::Width);
+                absoluteNodeLeft, pointScaleFactor, false, textRounding));
 
-    node->setLayoutDimension(
+    node->getLayout().setDimension(
+        Dimension::Height,
         roundValueToPixelGrid(
             absoluteNodeBottom,
             pointScaleFactor,
             (textRounding && hasFractionalHeight),
             (textRounding && !hasFractionalHeight)) -
             roundValueToPixelGrid(
-                absoluteNodeTop, pointScaleFactor, false, textRounding),
-        Dimension::Height);
+                absoluteNodeTop, pointScaleFactor, false, textRounding));
   }
 
   for (yoga::Node* child : node->getChildren()) {

yoga/node/LayoutResults.h

@@ -66,10 +66,18 @@ struct LayoutResults {
     return measuredDimensions_[yoga::to_underlying(axis)];
   }
 
+  float rawDimension(Dimension axis) const {
+    return rawDimensions_[yoga::to_underlying(axis)];
+  }
+
   void setMeasuredDimension(Dimension axis, float dimension) {
     measuredDimensions_[yoga::to_underlying(axis)] = dimension;
   }
 
+  void setRawDimension(Dimension axis, float dimension) {
+    rawDimensions_[yoga::to_underlying(axis)] = dimension;
+  }
+
   float position(PhysicalEdge physicalEdge) const {
     return position_[yoga::to_underlying(physicalEdge)];
   }
@@ -113,6 +121,7 @@ struct LayoutResults {
 
   std::array<float, 2> dimensions_ = {{YGUndefined, YGUndefined}};
   std::array<float, 2> measuredDimensions_ = {{YGUndefined, YGUndefined}};
+  std::array<float, 2> rawDimensions_ = {{YGUndefined, YGUndefined}};
   std::array<float, 4> position_ = {};
   std::array<float, 4> margin_ = {};
   std::array<float, 4> border_ = {};

yoga/node/Node.cpp

@@ -247,6 +247,7 @@ void Node::setLayoutHadOverflow(bool hadOverflow) {
 
 void Node::setLayoutDimension(float lengthValue, Dimension dimension) {
   layout_.setDimension(dimension, lengthValue);
+  layout_.setRawDimension(dimension, lengthValue);
 }
 
 // If both left and right are defined, then use left. Otherwise return +left or