[TD]prevent frames on exported/printed page

src/Mod/TechDraw/Gui/QGIView.cpp

@@ -1086,6 +1086,10 @@ void QGIView::updateFrameVisibility()
 
 bool QGIView::shouldShowFrame() const
 {
+    if (isExporting()) {
+        return false;
+    }
+
     if (isSelected()) {
         return true;
     }
@@ -1119,6 +1123,23 @@ bool QGIView::shouldShowFromViewProvider() const
     return vpPage->getFrameState();
 }
 
+
+bool QGIView::isExporting() const
+{
+    auto* view{freecad_cast<TechDraw::DrawView*>(getViewObject())};
+    auto vpPage = getViewProviderPage(view);
+    if (!view || !vpPage) {
+        return false;
+    }
+
+    QGSPage* scenePage = vpPage->getQGSPage();
+    if (!scenePage) {
+        return false;
+    }
+
+    return scenePage->getExportingAny();
+}
+
 //! Retrieves objects of type T with given indexes
 template <typename T>
 std::vector<T> QGIView::getObjects(std::vector<int> indexes)

src/Mod/TechDraw/Gui/QGIView.h

@@ -185,6 +185,9 @@ public:
 
     static bool hasSelectedChildren(QGIView* parent);
 
+    bool isExporting() const;
+
+
 protected:
     QGIView* getQGIVByName(std::string name) const;
 

src/Mod/TechDraw/Gui/QGIViewPart.cpp

@@ -1339,21 +1339,6 @@ void QGIViewPart::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
 }
 
 
-bool QGIViewPart::isExporting() const
-{
-    // dvp already validated
-    auto viewPart {freecad_cast<TechDraw::DrawViewPart*>(getViewObject())};
-    auto vpPage = getViewProviderPage(viewPart);
-
-    QGSPage* scenePage = vpPage->getQGSPage();
-    if (!scenePage) {
-        return false;
-    }
-
-    return scenePage->getExportingAny();
-}
-
-
 // returns true if vertex dots should be shown
 // note this is only one of the "rules" around showing or hiding vertices.
 bool QGIViewPart::showVertices() const

src/Mod/TechDraw/Gui/QGIViewPart.h

@@ -126,7 +126,6 @@ public:
     virtual double getLineWidth();
     virtual double getVertexSize();
 
-    bool isExporting() const;
     bool hideCenterMarks() const;