TechDraw: Sheet view: add property to claim sheet as child. (#21624)

* TechDraw: Sheet view: add property to claim sheet as child.

* Update ViewProviderSpreadsheet.cpp

* Fix bad scale of sheet views

src/Mod/TechDraw/Gui/ViewProviderSpreadsheet.cpp

@@ -35,6 +35,12 @@ PROPERTY_SOURCE(TechDrawGui::ViewProviderSpreadsheet, TechDrawGui::ViewProviderS
 ViewProviderSpreadsheet::ViewProviderSpreadsheet()
 {
     sPixmap = "TechDraw_TreeSpreadsheet";
+    ADD_PROPERTY_TYPE(ClaimSheetAsChild,
+                      (false),
+                      "Display Options",
+                      App::Prop_None,
+                      "Claim (or not) the spreadsheet source as a child of the view.");
+    LegacyScaling.setValue(true);
 }
 
 ViewProviderSpreadsheet::~ViewProviderSpreadsheet()
@@ -45,3 +51,14 @@ TechDraw::DrawViewSpreadsheet* ViewProviderSpreadsheet::getViewObject() const
 {
     return dynamic_cast<TechDraw::DrawViewSpreadsheet*>(pcObject);
 }
+
+std::vector<App::DocumentObject*> ViewProviderSpreadsheet::claimChildren() const
+{
+    std::vector<App::DocumentObject*> temp;
+
+    if (ClaimSheetAsChild.getValue()) {
+        temp.push_back(getViewObject()->Source.getValue());
+    }
+
+    return temp;
+}

src/Mod/TechDraw/Gui/ViewProviderSpreadsheet.h

@@ -43,6 +43,9 @@ public:
     /// destructor
     ~ViewProviderSpreadsheet() override;
 
+    App::PropertyBool ClaimSheetAsChild;
+    std::vector<App::DocumentObject*> claimChildren(void) const override;
+
     bool useNewSelectionModel() const override {return false;}
 
     TechDraw::DrawViewSpreadsheet* getViewObject() const override;