oox smartart, accent process: handle connector shape between pairs

The shape was created, but we literally tried to create a "conn" type,
while that has to be resolved to the relevant arrow type based on the
context.

This means now arrows show up between the parent-child pairs (but their
size is not yet correct).

Change-Id: I82594e46579e4ef723093e1dd0ba31bfcbbec4a0
Reviewed-on: https://gerrit.libreoffice.org/64348
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Tested-by: Jenkins
(cherry picked from commit 7f66a340933339974b5c6d70af4ae3c17e4f001a)
Reviewed-on: https://gerrit.libreoffice.org/65251

2 files changed, 53 insertions, 0 deletions

diff --git a/oox/source/drawingml/diagram/diagramlayoutatoms.cxx b/oox/source/drawingml/diagram/diagramlayoutatoms.cxx
index 52a05ccdb53d..f5a7b410de03 100644
--- a/oox/source/drawingml/diagram/diagramlayoutatoms.cxx
+++ b/oox/source/drawingml/diagram/diagramlayoutatoms.cxx
@@ -64,6 +64,41 @@ bool isFontUnit(sal_Int32 nUnit)
 {
     return nUnit == oox::XML_primFontSz || nUnit == oox::XML_secFontSz;
 }
+
+/// Determines the connector shape type from a linear alg.
+sal_Int32 getConnectorType(const oox::drawingml::LayoutNode* pNode)
+{
+    sal_Int32 nType = oox::XML_rightArrow;
+
+    if (!pNode)
+        return nType;
+
+    for (const auto& pChild : pNode->getChildren())
+    {
+        auto pAlgAtom = dynamic_cast<oox::drawingml::AlgAtom*>(pChild.get());
+        if (!pAlgAtom)
+            continue;
+
+        if (pAlgAtom->getType() != oox::XML_lin)
+            continue;
+
+        sal_Int32 nDir = oox::XML_fromL;
+        if (pAlgAtom->getMap().count(oox::XML_linDir))
+            nDir = pAlgAtom->getMap().find(oox::XML_linDir)->second;
+
+        switch (nDir)
+        {
+            case oox::XML_fromL:
+                nType = oox::XML_rightArrow;
+                break;
+            case oox::XML_fromR:
+                nType = oox::XML_leftArrow;
+                break;
+        }
+    }
+
+    return nType;
+}
 }
 
 namespace oox { namespace drawingml {
@@ -399,7 +434,18 @@ void AlgAtom::layoutShape( const ShapePtr& rShape,
         }
 
         case XML_conn:
+        {
+            if (rShape->getSubType() == XML_conn)
+            {
+                // There is no shape type "conn", replace it by an arrow based
+                // on the direction of the parent linear layout.
+                sal_Int32 nType = getConnectorType(pParent);
+
+                rShape->setSubType(nType);
+                rShape->getCustomShapeProperties()->setShapePresetType(nType);
+            }
             break;
+        }
 
         case XML_cycle:
         {
diff --git a/oox/source/drawingml/diagram/diagramlayoutatoms.hxx b/oox/source/drawingml/diagram/diagramlayoutatoms.hxx
index 50ff8a300ac5..024cdaa1b61a 100644
--- a/oox/source/drawingml/diagram/diagramlayoutatoms.hxx
+++ b/oox/source/drawingml/diagram/diagramlayoutatoms.hxx
@@ -162,6 +162,13 @@ public:
         { maMap[nType]=nVal; }
     void layoutShape( const ShapePtr& rShape,
                       const std::vector<Constraint>& rConstraints ) const;
+
+    /// Gives access to <dgm:alg type="..."/>.
+    sal_Int32 getType() const { return mnType; }
+
+    /// Gives access to <dgm:param type="..." val="..."/>.
+    const ParamMap& getMap() const { return maMap; }
+
 private:
     sal_Int32 mnType;
     ParamMap  maMap;