oox smartart, accent process: add support for reading values from constraints

And also add support for merging parent and own constraints in the
layout.

This fixes the lack of vertical position difference between the two
pairs of shapes in the bugdoc.

Change-Id: I3a91c9b0da5eed78a87116ebe0e2751a73e1508f
Reviewed-on: https://gerrit.libreoffice.org/63340
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Tested-by: Jenkins

1 files changed, 30 insertions, 8 deletions

diff --git a/oox/source/drawingml/diagram/diagramlayoutatoms.cxx b/oox/source/drawingml/diagram/diagramlayoutatoms.cxx
index 763eca855d91..162cc32d12b1 100644
--- a/oox/source/drawingml/diagram/diagramlayoutatoms.cxx
+++ b/oox/source/drawingml/diagram/diagramlayoutatoms.cxx
@@ -55,6 +55,15 @@ oox::OptValue<sal_Int32> findProperty(const oox::drawingml::LayoutPropertyMap& r
 
     return oRet;
 }
+
+/**
+ * Determines if nUnit is a font unit (measured in points) or not (measured in
+ * millimeters).
+ */
+bool isFontUnit(sal_Int32 nUnit)
+{
+    return nUnit == oox::XML_primFontSz || nUnit == oox::XML_secFontSz;
+}
 }
 
 namespace oox { namespace drawingml {
@@ -273,10 +282,9 @@ void ConstraintAtom::accept( LayoutAtomVisitor& rVisitor )
 void ConstraintAtom::parseConstraint(std::vector<Constraint>& rConstraints) const
 {
     // accepting only basic equality constraints
-    if (!maConstraint.msForName.isEmpty() &&
-        (maConstraint.mnOperator == XML_none || maConstraint.mnOperator == XML_equ) &&
-        maConstraint.mnType != XML_none &&
-        maConstraint.mfValue == 0)
+    if (!maConstraint.msForName.isEmpty()
+        && (maConstraint.mnOperator == XML_none || maConstraint.mnOperator == XML_equ)
+        && maConstraint.mnType != XML_none)
     {
         rConstraints.push_back(maConstraint);
     }
@@ -291,7 +299,7 @@ void AlgAtom::layoutShape( const ShapePtr& rShape,
                            const std::vector<Constraint>& rOwnConstraints ) const
 {
     // Algorithm result may depend on the parent constraints as well.
-    std::vector<Constraint> aParentConstraints;
+    std::vector<Constraint> aMergedConstraints;
     const LayoutNode* pParent = getLayoutNode().getParentLayoutNode();
     if (pParent)
     {
@@ -299,10 +307,12 @@ void AlgAtom::layoutShape( const ShapePtr& rShape,
         {
             auto pConstraintAtom = dynamic_cast<ConstraintAtom*>(pChild.get());
             if (pConstraintAtom)
-                pConstraintAtom->parseConstraint(aParentConstraints);
+                pConstraintAtom->parseConstraint(aMergedConstraints);
         }
     }
-    const std::vector<Constraint>& rConstraints = rOwnConstraints.empty() ? aParentConstraints : rOwnConstraints;
+    aMergedConstraints.insert(aMergedConstraints.end(), rOwnConstraints.begin(),
+                              rOwnConstraints.end());
+    const std::vector<Constraint>& rConstraints = aMergedConstraints;
 
     switch(mnType)
     {
@@ -328,7 +338,19 @@ void AlgAtom::layoutShape( const ShapePtr& rShape,
                     if (aRefType != aRef->second.end())
                         aProperties[rConstr.msForName][rConstr.mnType] = aRefType->second * rConstr.mfFactor;
                     else
-                        aProperties[rConstr.msForName][rConstr.mnType] = 0; // TODO: val
+                    {
+                        // Values are never in EMU, while oox::drawingml::Shape
+                        // position and size are always in EMU.
+                        double fUnitFactor = 0;
+                        if (isFontUnit(rConstr.mnRefType))
+                            // Points -> EMU.
+                            fUnitFactor = EMU_PER_PT;
+                        else
+                            // Millimeters -> EMU.
+                            fUnitFactor = EMU_PER_HMM * 100;
+                        aProperties[rConstr.msForName][rConstr.mnType]
+                            = rConstr.mfValue * fUnitFactor;
+                    }
                 }
             }