remove hidden objects

cell/model/Serialize.js

@@ -6627,7 +6627,9 @@
 
                // res = c_oSerConstants.ReadUnknown;
                 var oGraphicObject = pptx_content_loader.ReadGraphicObject(this.stream, this.curWorksheet);
-                if(null != oGraphicObject && !((oGraphicObject.getObjectType() === AscDFH.historyitem_type_Shape || oGraphicObject.getObjectType() === AscDFH.historyitem_type_ImageShape) && !oGraphicObject.spPr))
+                if(null != oGraphicObject
+                    && !((oGraphicObject.getObjectType() === AscDFH.historyitem_type_Shape || oGraphicObject.getObjectType() === AscDFH.historyitem_type_ImageShape) && !oGraphicObject.spPr)
+                    && !AscCommon.IsHiddenObj(oGraphicObject))
                 {
                     oDrawing.graphicObject = oGraphicObject;
 					//TODO при copy/paste в word из excel пропадает метод setDrawingBase

common/Shapes/Serialize.js

@@ -9900,5 +9900,6 @@ function CPres()
     window['AscCommon'].c_dScalePPTXSizes = c_dScalePPTXSizes;
     window['AscCommon'].CBuilderImages = CBuilderImages;
     window['AscCommon'].BinaryPPTYLoader = BinaryPPTYLoader;
+    window['AscCommon'].IsHiddenObj = IsHiddenObj;
     window['AscCommon'].pptx_content_loader = new CPPTXContentLoader();
 })(window);