oox smartart: extract pyra algo from AlgAtom::layoutShape()

AlgAtom::layoutShape() is more or less the single function where all
layouting happens for all algoritms. Extract the pyra algorithm part
from it to a separate PyraAlg::layoutShapeChildren() before that
function grows too large.

(cherry picked from commit 318438a680e6bf5c2c592d5e997f6f45a4ae8e5f)

Change-Id: I097ac9ed6110536bbeb8a26ab35a8ee8a79d5b33
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/109701
Tested-by: Jenkins CollaboraOffice <jenkinscollaboraoffice@gmail.com>
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>

2 files changed, 48 insertions, 32 deletions

diff --git a/oox/source/drawingml/diagram/diagramlayoutatoms.cxx b/oox/source/drawingml/diagram/diagramlayoutatoms.cxx
index 6a33148a7993..58f6da680f97 100644
--- a/oox/source/drawingml/diagram/diagramlayoutatoms.cxx
+++ b/oox/source/drawingml/diagram/diagramlayoutatoms.cxx
@@ -440,6 +440,43 @@ void SnakeAlg::layoutShapeChildren(const AlgAtom::ParamMap& rMap, const ShapePtr
     }
 }
 
+void PyraAlg::layoutShapeChildren(const ShapePtr& rShape)
+{
+    if (rShape->getChildren().empty() || rShape->getSize().Width == 0
+        || rShape->getSize().Height == 0)
+        return;
+
+    // const sal_Int32 nDir = maMap.count(XML_linDir) ? maMap.find(XML_linDir)->second : XML_fromT;
+    // const sal_Int32 npyraAcctPos = maMap.count(XML_pyraAcctPos) ? maMap.find(XML_pyraAcctPos)->second : XML_bef;
+    // const sal_Int32 ntxDir = maMap.count(XML_txDir) ? maMap.find(XML_txDir)->second : XML_fromT;
+    // const sal_Int32 npyraLvlNode = maMap.count(XML_pyraLvlNode) ? maMap.find(XML_pyraLvlNode)->second : XML_level;
+    // uncomment when use in code.
+
+    sal_Int32 nCount = rShape->getChildren().size();
+    double fAspectRatio = 0.32;
+
+    awt::Size aChildSize = rShape->getSize();
+    aChildSize.Width /= nCount;
+    aChildSize.Height /= nCount;
+
+    awt::Point aCurrPos(0, 0);
+    aCurrPos.X = fAspectRatio * aChildSize.Width * (nCount - 1);
+    aCurrPos.Y = fAspectRatio * aChildSize.Height;
+
+    for (auto& aCurrShape : rShape->getChildren())
+    {
+        aCurrShape->setPosition(aCurrPos);
+        if (nCount > 1)
+        {
+            aCurrPos.X -= aChildSize.Height / (nCount - 1);
+        }
+        aChildSize.Width += aChildSize.Height;
+        aCurrShape->setSize(aChildSize);
+        aCurrShape->setChildSize(aChildSize);
+        aCurrPos.Y += (aChildSize.Height);
+    }
+}
+
 IteratorAttr::IteratorAttr( )
     : mnCnt( -1 )
     , mbHideLastTrans( true )
@@ -1594,38 +1631,7 @@ void AlgAtom::layoutShape(const ShapePtr& rShape, const std::vector<Constraint>&
 
         case XML_pyra:
         {
-            if (rShape->getChildren().empty() || rShape->getSize().Width == 0 || rShape->getSize().Height == 0)
-                break;
-
-            // const sal_Int32 nDir = maMap.count(XML_linDir) ? maMap.find(XML_linDir)->second : XML_fromT;
-            // const sal_Int32 npyraAcctPos = maMap.count(XML_pyraAcctPos) ? maMap.find(XML_pyraAcctPos)->second : XML_bef;
-            // const sal_Int32 ntxDir = maMap.count(XML_txDir) ? maMap.find(XML_txDir)->second : XML_fromT;
-            // const sal_Int32 npyraLvlNode = maMap.count(XML_pyraLvlNode) ? maMap.find(XML_pyraLvlNode)->second : XML_level;
-            // uncomment when use in code.
-
-            sal_Int32 nCount = rShape->getChildren().size();
-            double fAspectRatio = 0.32;
-
-            awt::Size aChildSize = rShape->getSize();
-            aChildSize.Width /= nCount;
-            aChildSize.Height /= nCount;
-
-            awt::Point aCurrPos(0, 0);
-            aCurrPos.X = fAspectRatio*aChildSize.Width*(nCount-1);
-            aCurrPos.Y = fAspectRatio*aChildSize.Height;
-
-            for (auto & aCurrShape : rShape->getChildren())
-            {
-                aCurrShape->setPosition(aCurrPos);
-                if (nCount > 1)
-                {
-                    aCurrPos.X -= aChildSize.Height / (nCount - 1);
-                }
-                aChildSize.Width += aChildSize.Height;
-                aCurrShape->setSize(aChildSize);
-                aCurrShape->setChildSize(aChildSize);
-                aCurrPos.Y += (aChildSize.Height);
-            }
+            PyraAlg::layoutShapeChildren(rShape);
             break;
         }
 
diff --git a/oox/source/drawingml/diagram/diagramlayoutatoms.hxx b/oox/source/drawingml/diagram/diagramlayoutatoms.hxx
index 571cca641d78..80f6b2d9bb0d 100644
--- a/oox/source/drawingml/diagram/diagramlayoutatoms.hxx
+++ b/oox/source/drawingml/diagram/diagramlayoutatoms.hxx
@@ -210,6 +210,16 @@ public:
                                     const std::vector<Constraint>& rConstraints);
 };
 
+/**
+ * Lays out child layout nodes along a vertical path and works with the trapezoid shape to create a
+ * pyramid.
+ */
+class PyraAlg
+{
+public:
+    static void layoutShapeChildren(const ShapePtr& rShape);
+};
+
 class ForEachAtom
     : public LayoutAtom
 {