LayoutNode _GetLeftmost(LayoutNode node, int level, int maxlevel)
{
if (level >= maxlevel)
{
return(node);
}
if (node._getChildrenCount() == 0)
{
return(null);
}
var n = node._getChildrenCount();
for (var i = 0; i < n; i++)
{
var iChild = node._getChildAt(i);
var leftmostDescendant = this._GetLeftmost(iChild, level + 1, maxlevel);
if (leftmostDescendant != null)
{
return(leftmostDescendant);
}
}
return(null);
}
//Layout algorithm
public void FirstWalk(LayoutNode node, int level)
{
LayoutNode leftSibling = null;
node.X = 0;
node.Y = 0;
node.Prelim = 0;
node.Modifier = 0;
node.LeftNeighbor = null;
node.RightNeighbor = null;
_setLevelHeight(node, level);
_setLevelWidth(node, level);
_setNeighbors(node, level);
if (node._getChildrenCount() == 0 || level == Config.iMaxDepth)
{
leftSibling = node._getLeftSibling();
if (leftSibling != null)
{
node.Prelim = leftSibling.Prelim + GetNodeSize(leftSibling) + Config.iSiblingSeparation;
}
else
{
node.Prelim = 0;
}
}
else
{
var n = node._getChildrenCount();
for (var i = 0; i < n; i++)
{
var iChild = node._getChildAt(i);
FirstWalk(iChild, level + 1);
}
var midPoint = node._getChildrenCenter(this);
midPoint -= GetNodeSize(node) / 2;
leftSibling = node._getLeftSibling();
if (leftSibling != null)
{
node.Prelim = leftSibling.Prelim + GetNodeSize(leftSibling) + Config.iSiblingSeparation;
node.Modifier = node.Prelim - midPoint;
_apportion(node, level);
}
else
{
node.Prelim = midPoint;
}
}
}