oox smartart, org chart: fix position and size of connector shapes

Finally the bugdoc rendering result is reasonable and even looks like a
tree as it should.

Change-Id: I4e7a729afd3d2c5af2e7f41903737bd56be406fa
Reviewed-on: https://gerrit.libreoffice.org/66664Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Tested-by: Jenkins

oox/source/drawingml/diagram/diagramlayoutatoms.cxx

@@ -30,6 +30,7 @@
 #include <drawingml/textparagraph.hxx>
 #include <drawingml/textrun.hxx>
 #include <drawingml/customshapeproperties.hxx>
+#include <tools/gen.hxx>
 
 using namespace ::com::sun::star;
 using namespace ::com::sun::star::uno;
@@ -73,6 +74,10 @@ sal_Int32 getConnectorType(const oox::drawingml::LayoutNode* pNode)
     if (!pNode)
         return nType;
 
+    // This is cheaper than visiting the whole sub-tree.
+    if (pNode->getName().startsWith("hierChild"))
+        return oox::XML_bentConnector3;
+
     for (const auto& pChild : pNode->getChildren())
     {
         auto pAlgAtom = dynamic_cast<oox::drawingml::AlgAtom*>(pChild.get());
@@ -171,6 +176,28 @@ void calculateHierChildOffsetScale(const oox::drawingml::ShapePtr& pShape,
         }
     }
 }
+
+/// Sets the position and size of a connector inside a hierChild algorithm.
+void setHierChildConnPosSize(const oox::drawingml::ShapePtr& pShape)
+{
+    // Connect to the top center of the child.
+    awt::Point aShapePoint = pShape->getPosition();
+    awt::Size aShapeSize = pShape->getSize();
+    tools::Rectangle aRectangle(Point(aShapePoint.X, aShapePoint.Y),
+                                Size(aShapeSize.Width, aShapeSize.Height));
+    Point aTo = aRectangle.TopCenter();
+
+    // Connect from the bottom center of the parent.
+    Point aFrom = aTo;
+    aFrom.setY(aFrom.getY() - aRectangle.getHeight() * 0.3);
+
+    tools::Rectangle aRect(aFrom, aTo);
+    aRect.Justify();
+    aShapePoint = awt::Point(aRect.Left(), aRect.Top());
+    aShapeSize = awt::Size(aRect.getWidth(), aRect.getHeight());
+    pShape->setPosition(aShapePoint);
+    pShape->setSize(aShapeSize);
+}
 }
 
 namespace oox { namespace drawingml {
@@ -542,6 +569,12 @@ void AlgAtom::layoutShape( const ShapePtr& rShape,
 
                 rShape->setSubType(nType);
                 rShape->getCustomShapeProperties()->setShapePresetType(nType);
+
+                if (nType == XML_bentConnector3)
+                {
+                    setHierChildConnPosSize(rShape);
+                    break;
+                }
             }
 
             // Parse constraints to adjust the size.
@@ -629,7 +662,6 @@ void AlgAtom::layoutShape( const ShapePtr& rShape,
                 break;
 
             sal_Int32 nCount = rShape->getChildren().size();
-            double fSpace = 0.3;
 
             if (mnType == XML_hierChild)
             {
@@ -643,6 +675,10 @@ void AlgAtom::layoutShape( const ShapePtr& rShape,
             // A manager node's height should be independent from if it has
             // assistants and employees, compensate for that.
             bool bTop = mnType == XML_hierRoot && rShape->getInternalName() == "hierRoot1";
+
+            // Add spacing, so connectors have a chance to be visible.
+            double fSpace = (nCount > 1 || bTop) ? 0.3 : 0;
+
             double fHeightScale = 1.0;
             if (mnType == XML_hierRoot && nCount < 3 && bTop)
                 fHeightScale = fHeightScale * nCount / 3;

sd/qa/unit/import-tests-smartart.cxx

@@ -778,6 +778,15 @@ void SdImportTestSmartArt::testOrgChart()
     // assistant shape was below the employee shape.
     CPPUNIT_ASSERT_GREATER(aAssistantPos.Y, aEmployeePos.Y);
 
+    // Make sure the connector of the assistant is above the shape.
+    uno::Reference<drawing::XShape> xAssistantConnector(
+        getChildShape(getChildShape(getChildShape(xGroup, 0), 1), 0), uno::UNO_QUERY);
+    CPPUNIT_ASSERT(xAssistantConnector.is());
+    awt::Point aAssistantConnectorPos = xAssistantConnector->getPosition();
+    // This failed, the vertical positions of the connector and the shape of
+    // the assistant were the same.
+    CPPUNIT_ASSERT_LESS(aAssistantPos.Y, aAssistantConnectorPos.Y);
+
     // Make sure the height of xManager and xManager2 is the same.
     uno::Reference<text::XText> xManager2(
         getChildShape(getChildShape(getChildShape(xGroup, 1), 0), 0), uno::UNO_QUERY);