Merge pull request #4773 from steelman/techdraw-svg-layer

[TD] Make the root SVG group a layer for Inkscape

src/Mod/TechDraw/Gui/QGVPage.cpp

@@ -114,6 +114,7 @@
 #define CC_NS_URI "http://creativecommons.org/ns#"
 #define DC_NS_URI "http://purl.org/dc/elements/1.1/"
 #define RDF_NS_URI "http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+#define INKSCAPE_NS_URI "http://www.inkscape.org/namespaces/inkscape"
 
 using namespace Gui;
 using namespace TechDraw;
@@ -899,10 +900,16 @@ void QGVPage::postProcessXml(QTemporaryFile& temporaryFile, QString fileName, QS
         QString::fromUtf8(DC_NS_URI));
     exportDocElem.setAttribute(QString::fromUtf8("xmlns:rdf"),
         QString::fromUtf8(RDF_NS_URI));
+    exportDocElem.setAttribute(QString::fromUtf8("xmlns:inkscape"),
+        QString::fromUtf8(INKSCAPE_NS_URI));
 
     // Create the root group which will host the drawing group and the template group
     QDomElement rootGroup = exportDoc.createElement(QString::fromUtf8("g"));
     rootGroup.setAttribute(QString::fromUtf8("id"), pageName);
+    rootGroup.setAttribute(QString::fromUtf8("inkscape:groupmode"),
+        QString::fromUtf8("layer"));
+    rootGroup.setAttribute(QString::fromUtf8("inkscape:label"),
+        QString::fromUtf8("TechDraw"));
 
     // Now insert our template
     QGISVGTemplate *svgTemplate = dynamic_cast<QGISVGTemplate *>(pageTemplate);