Materials: Child ignoring parent material

Inherit the material from the parent object when creating a new object,
such as during a boolean operation, or when extruding a sketch.

fixes #15503

src/Mod/Part/App/FeatureChamfer.cpp

@@ -86,7 +86,7 @@ App::DocumentObjectExecReturn *Chamfer::execute()
 
         TopoShape res(0);
         this->Shape.setValue(res.makeElementShape(mkChamfer,baseTopoShape,Part::OpCodes::Chamfer));
-        return Part::Feature::execute();
+        return Part::FilletBase::execute();
     }
     catch (Standard_Failure& e) {
         return new App::DocumentObjectExecReturn(e.GetMessageString());

src/Mod/Part/App/FeatureCompound.cpp

@@ -69,6 +69,10 @@ App::DocumentObjectExecReturn *Compound::execute()
             }
         }
         this->Shape.setValue(TopoShape().makeElementCompound(shapes));
+        if (Links.getSize() > 0) {
+            App::DocumentObject* link = Links.getValues()[0];
+            copyMaterial(link);
+        }
         return Part::Feature::execute();
     }
     catch (Standard_Failure& e) {

src/Mod/Part/App/FeatureFillet.cpp

@@ -90,7 +90,7 @@ App::DocumentObjectExecReturn *Fillet::execute()
 
         TopoShape res(0);
         this->Shape.setValue(res.makeElementShape(mkFillet,baseTopoShape,Part::OpCodes::Fillet));
-        return Part::Feature::execute();
+        return Part::FilletBase::execute();
     }
     catch (Standard_Failure& e) {
         return new App::DocumentObjectExecReturn(e.GetMessageString());

src/Mod/Part/App/FeatureMirroring.cpp

@@ -257,6 +257,8 @@ App::DocumentObjectExecReturn *Mirroring::execute()
         if (shape.isNull())
             Standard_Failure::Raise("Cannot mirror empty shape");
         this->Shape.setValue(TopoShape(0).makeElementMirror(shape,ax2));
+        copyMaterial(link);
+
         return Part::Feature::execute();
     }
     catch (Standard_Failure& e) {

src/Mod/Part/App/FeaturePartBoolean.cpp

@@ -136,6 +136,7 @@ App::DocumentObjectExecReturn* Boolean::execute()
             res = res.makeElementRefine();
         }
         this->Shape.setValue(res);
+        copyMaterial(base);
         return Part::Feature::execute();
     }
     catch (...) {

src/Mod/Part/App/FeaturePartCommon.cpp

@@ -117,6 +117,10 @@ App::DocumentObjectExecReturn *MultiCommon::execute()
         res = res.makeElementRefine();
     }
     this->Shape.setValue(res);
+    if (Shapes.getSize() > 0) {
+        App::DocumentObject* link = Shapes.getValues()[0];
+        copyMaterial(link);
+    }
 
     return Part::Feature::execute();
 }

src/Mod/Part/App/FeaturePartFuse.cpp

@@ -208,6 +208,9 @@ App::DocumentObjectExecReturn *MultiFuse::execute()
             }
             this->Shape.setValue(res);
             this->History.setValues(history);
+
+            App::DocumentObject* link = Shapes.getValues()[0];
+            copyMaterial(link);
             return Part::Feature::execute();
         }
         catch (Standard_Failure& e) {

src/Mod/Part/App/PartFeature.cpp

@@ -128,6 +128,26 @@ PyObject *Feature::getPyObject()
     return Py::new_reference_to(PythonObject);
 }
 
+void Feature::copyMaterial(Feature* feature)
+{
+    auto mat = Materials::MaterialManager::defaultMaterial();
+    if (feature) {
+        if (ShapeMaterial.getValue().getUUID() != feature->ShapeMaterial.getValue().getUUID()) {
+            if (ShapeMaterial.getValue().getUUID() == mat->getUUID()) {
+                ShapeMaterial.setValue(feature->ShapeMaterial.getValue());
+            }
+        }
+    }
+}
+
+void Feature::copyMaterial(App::DocumentObject* link)
+{
+    auto feature = dynamic_cast<Part::Feature*>(link);
+    if (feature) {
+        copyMaterial(feature);
+    }
+}
+
 /**
  * Override getElementName to support the Export type.  Other calls are passed to the original
  * method
@@ -1709,6 +1729,16 @@ short FilletBase::mustExecute() const
     return 0;
 }
 
+App::DocumentObjectExecReturn* FilletBase::execute()
+{
+    App::DocumentObject* link = this->Base.getValue();
+    if (!link) {
+        return new App::DocumentObjectExecReturn("No object linked");
+    }
+    copyMaterial(link);
+    return Part::Feature::execute();
+}
+
 void FilletBase::onChanged(const App::Property *prop) {
     if(getDocument() && !getDocument()->testStatus(App::Document::Restoring)) {
         if(prop == &Edges || prop == &Base) {

src/Mod/Part/App/PartFeature.h

@@ -169,6 +169,9 @@ protected:
     void onBeforeChange(const App::Property* prop) override;
     void onChanged(const App::Property* prop) override;
 
+    void copyMaterial(Feature* feature);
+    void copyMaterial(App::DocumentObject* link);
+
     void registerElementCache(const std::string &prefix, PropertyPartShape *prop);
 
     /** Helper function to obtain mapped and indexed element name from a shape
@@ -210,7 +213,8 @@ public:
     App::PropertyLinkSub   EdgeLinks;
 
     short mustExecute() const override;
-    void onUpdateElementReference(const App::Property *prop) override;
+    App::DocumentObjectExecReturn* execute() override;
+    void onUpdateElementReference(const App::Property* prop) override;
 
 protected:
     void onDocumentRestored() override;