QGraphicsAnchorLayout: Adding updateChildrenSizes method to anchors

This method is meant to be called by the AnchorLayout after it has
set the sizes of all root anchors of a simplified graph.

The idea here it that these anchors will then propagate its new
sizes down the simplification tree.

Signed-off-by: Eduardo M. Fleury <eduardo.fleury@openbossa.org>
Reviewed-by: Jan-Arve Sæther <jan-arve.saether@nokia.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/src/gui/graphicsview/qgraphicsanchorlayout_p.h b/src/gui/graphicsview/qgraphicsanchorlayout_p.h
index 2f1aa97..1c0f737 100644
--- a/src/gui/graphicsview/qgraphicsanchorlayout_p.h
+++ b/src/gui/graphicsview/qgraphicsanchorlayout_p.h
@@ -145,6 +145,8 @@ struct AnchorData : public QSimplexVariable {
           sizeAtMinimum(0), sizeAtPreferred(0), sizeAtMaximum(0),
           skipInPreferred(0), type(Normal), hasSize(false) {}
 
+    virtual void updateChildrenSizes() { };
+
     inline QString toString() const;
     QString name;
 
@@ -192,6 +194,8 @@ struct SequentialAnchorData : public AnchorData
         name = QLatin1String("SequentialAnchorData");
     }
 
+    virtual void updateChildrenSizes();
+
     void setVertices(const QVector<AnchorVertex*> &vertices)
     {
         m_children = vertices;
@@ -212,6 +216,9 @@ struct ParallelAnchorData : public AnchorData
         origin = first->origin;
         name = QString::fromAscii("%1 | %2").arg(first->toString(), second->toString());
     }
+
+    virtual void updateChildrenSizes();
+
     AnchorData* firstEdge;
     AnchorData* secondEdge;
 };