getExternalRects method
Implementation
String getExternalRects(Rect nativeWindowRect, Rect webViewRect) {
Map<String, dynamic> nativeWindowRectStr =
_createStrRects(nativeWindowRect);
Map<String, dynamic> webViewRectStr = _createStrRects(webViewRect);
Map<String, dynamic> rects = new Map<String, dynamic>();
rects[_KEY_WEB_VIEW_RECT] = webViewRectStr;
rects[_KEY_NATIVE_WINDOW_RECT] = nativeWindowRectStr;
return json.encode(rects);
}