fix exporting to pdf (DVF-2550)

Author: blackart

src/vector/Stage.js

@@ -1418,6 +1418,11 @@ acgraph.vector.Stage.prototype.addPdfData_ = function(data, opt_paperSizeOrWidth
   } else {
     svgStr = this.toSvg();
   }
+
+  //fix for magic bug with svg to pdf converter. This fill-opacity attr applyed to clipPath element that affected
+  //opacity of text elements below (DVF-2550 (p9 and p10)).
+  svgStr = svgStr.replace(/fill="#FFFFFF" fill-opacity="0\.0+1"/g, 'fill="none"');
+
   data['data'] = svgStr;
   data['dataType'] = 'svg';
   data['responseType'] = 'file';