Rectangle LayoutSubTopics(Topic parent, Topic[] subTopics, Vector4 vector, XList <int> rows, XList <int> columns, int parentRow, int parentCol, MindMapLayoutArgs e)
{
if (parent == null)
{
throw new ArgumentNullException();
}
if (rows.IsEmpty || columns.IsEmpty)
{
return(Rectangle.Empty);
}
if (parent.Folded || parent.Children.IsEmpty)
{
return(Rectangle.Empty);
}
int vSpace = e.ItemsSpace;
Topic root = parent.GetRoot();
Rectangle rectFull = Rectangle.Empty;
Point pp = PaintHelper.CenterPoint(root.ContentBounds);
int fullHeight = GetYPos(rows.Count - 1, vSpace, rows);
int x = vector == Vector4.Left ? root.Left - e.LayerSpace : root.Right + e.LayerSpace;
int y = pp.Y - (fullHeight / 2) - 30;
int hSpace = 10;
Topic previous = parent == root ? root : parent.ParentTopic;
int prevRow = 0;
for (int i = 0, n = subTopics.Length; i < n; ++i)
{
Topic subTopic = subTopics[i];
subTopic.Vector = vector;
int row = 0, column = 0;
switch (vector)
{
case Vector4.Top:
subTopic.Location = new Point(root.Bounds.Left - (subTopic.Width - root.Width) / 2, parent.Location.Y - e.LayerSpace - subTopic.Size.Height);
break;
case Vector4.Left:
case Vector4.Right:
default:
if (subTopic.Type == TopicType.Barrier)
{
column = parentCol - subTopics.Length + i;
row = parentRow;
}
else
{
column = parentCol + (subTopic.Folded ? 0 : subTopic.Children.Count) + 1;
row = parentRow + 1;
if (subTopic.Type == TopicType.Escalation)
{
int maxUncleRow = 0;
if (parent.ParentTopic != null)
{
XList <Topic> children = parent.ParentTopic.Children;
int nextIndex = children.IndexOf(parent) + 1;
if (nextIndex < children.Count)
{
maxUncleRow = CalculateMaxRow(children[nextIndex], children.ToArray());
}
}
int maxSiblingRow = 0;
int prevIndex = i - 1;
if (prevIndex >= 0)
{
maxSiblingRow = CalculateMaxRow(parent.Children[prevIndex], parent.Children.ToArray());
}
row += maxSiblingRow + maxUncleRow;
}
else if (parent.IsRoot)
{
int prevIndex = i - 1;
if (prevIndex >= 0)
{
row += CalculateMaxRow(subTopics[prevIndex], subTopics);
}
}
}
Point pt = new Point(GetXPos(column, hSpace, columns, vector), GetYPos(row, vSpace, rows));
if (subTopic.Type == TopicType.Barrier)
{
if (vector == Vector4.Left)
{
pt.X -= (subTopic.ContentBounds.Width - subTopic.Width) / 2;
}
else
{
pt.X += (subTopic.ContentBounds.Width - subTopic.Width) / 2;
}
}
subTopic.Location = new Point(vector == Vector4.Left ? x - pt.X: x + pt.X, pt.Y + y);
prevRow = row;
break;
}
// line
if (!parent.Folded && subTopic.Type == TopicType.Barrier)
{
var lines = CreateTopicLines(e, previous, subTopic, vector, GetReverseVector(vector));
if (lines != null)
{
parent.Lines.AddRange(lines);
}
}
subTopic.Lines.Clear();
Rectangle rectFullSub = LayoutSubTopics(subTopic, subTopic.Children.ToArray(), vector, rows, columns, row, column, e);
// Threat topic will be drawn as the last element
if (subTopic.Type == TopicType.Threat || subTopic.Type == TopicType.Consequence || subTopic.Type == TopicType.Escalation)
{
Topic beginNode, endNode;
if (subTopic.HasChildren && !subTopic.Folded)
{
beginNode = subTopic.Children[subTopic.Children.Count - 1];
endNode = subTopic;
}
else
{
beginNode = parent;
endNode = subTopic;
}
var lines = CreateTopicLines(e, beginNode, endNode, vector, GetReverseVector(vector));
if (lines != null)
{
beginNode.Lines.AddRange(lines);
}
if (subTopic.HasChildren)
{
int foldBtnSize = FoldingButtonSize;
if (vector == Vector4.Left)
{
subTopic.FoldingButton = new Rectangle(subTopic.Right - foldBtnSize + 4,
subTopic.Top + (int)Math.Round((60 - foldBtnSize) / 2.0f, MidpointRounding.AwayFromZero),
foldBtnSize,
foldBtnSize);
}
else if (vector == Vector4.Right)
{
subTopic.FoldingButton = new Rectangle(subTopic.Left - foldBtnSize + 4,
subTopic.Top + (int)Math.Round((60 - foldBtnSize) / 2.0f, MidpointRounding.AwayFromZero),
foldBtnSize,
foldBtnSize);
}
}
}
else if (subTopic.Type == TopicType.Hazard)
{
var lines = CreateTopicLines(e, root, subTopic, vector, GetReverseVector(vector));
if (lines != null)
{
root.Lines.AddRange(lines);
}
}
rectFull = Rectangle.Union(rectFull, subTopic.ContentBounds);
if (!rectFullSub.IsEmpty)
{
rectFull = Rectangle.Union(rectFull, rectFullSub);
}
previous = subTopic;
}
return(rectFull);
}