Merge pull request #9779 from qgis/backport-9763-to-release-3_6

[Backport release-3_6] Apply SLD PointSymbolizer on single centroid for polygon

Author: rldhont

src/core/symbology/qgsfillsymbollayer.cpp

@@ -3512,6 +3512,7 @@ QgsSymbolLayer *QgsCentroidFillSymbolLayer::createFromSld( QDomElement &element
 
   std::unique_ptr< QgsCentroidFillSymbolLayer > sl = qgis::make_unique< QgsCentroidFillSymbolLayer >();
   sl->setSubSymbol( marker.release() );
+  sl->setPointOnAllParts( false );
   return sl.release();
 }
 

tests/src/python/test_qgssymbollayer.py

@@ -698,6 +698,11 @@ def testQgsCentroidFillSymbolLayer(self):
         mMessage = 'Expected "%s" got "%s"' % (mExpectedValue, mValue)
         assert mExpectedValue == mValue, mMessage
 
+        mExpectedValue = False
+        mValue = mSymbolLayer.pointOnAllParts()
+        mMessage = 'Expected "%s" got "%s"' % (mExpectedValue, mValue)
+        assert mExpectedValue == mValue, mMessage
+
         # test colors, need to make sure colors are passed/retrieved from subsymbol
         mSymbolLayer.setColor(QColor(150, 50, 100))
         self.assertEqual(mSymbolLayer.color(), QColor(150, 50, 100))