Wire call from C++ to Java to get lines measurements

Summary: Changelog: [Internal]

Reviewed By: shergin

Differential Revision: D23782998

fbshipit-source-id: fa9bda274c024d5bbd3ca24f394b5d76f8c07ad2

ReactCommon/react/renderer/textlayoutmanager/TextMeasureCache.cpp

@@ -10,6 +10,40 @@
 namespace facebook {
 namespace react {
 
+static Rect rectFromDynamic(folly::dynamic const &data) {
+  Point origin;
+  origin.x = data.getDefault("x", 0).getDouble();
+  origin.y = data.getDefault("y", 0).getDouble();
+  Size size;
+  size.width = data.getDefault("width", 0).getDouble();
+  size.height = data.getDefault("height", 0).getDouble();
+  Rect frame;
+  frame.origin = origin;
+  frame.size = size;
+  return frame;
+}
+
+LineMeasurement::LineMeasurement(
+    std::string text,
+    Rect frame,
+    Float descender,
+    Float capHeight,
+    Float ascender,
+    Float xHeight)
+    : text(text),
+      frame(frame),
+      descender(descender),
+      capHeight(capHeight),
+      ascender(ascender) {}
+
+LineMeasurement::LineMeasurement(folly::dynamic const &data)
+    : text(data.getDefault("text", "").getString()),
+      frame(rectFromDynamic(data)),
+      descender(data.getDefault("descender", 0).getDouble()),
+      capHeight(data.getDefault("capHeight", 0).getDouble()),
+      ascender(data.getDefault("ascender", 0).getDouble()),
+      xHeight(data.getDefault("xHeight", 0).getDouble()) {}
+
 bool LineMeasurement::operator==(LineMeasurement const &rhs) const {
   return std::tie(
              this->text,