/// <summary>
/// Returns true if successfully refreshes all node positions. If canvas is not big enough, the operation is aborted and 'false' is returned.
/// </summary>
/// <param name="parent"></param>
/// <param name="sideToRefresh"></param>
/// <returns></returns>
private bool RefreshChildNodePositionsRecursive(MapNode parent, NodePosition sideToRefresh)
{
NodeView nView = this.GetNodeView(parent);
if (!parent.HasChildren || parent.Folded)
{
if (!NodeWithinCanvas(parent, 50))
{
return(false);
}
return(true);
}
else
{
for (int i = 0; i < 2; i++)
{
IEnumerable <MapNode> childNodes;
NodePosition rpos;
if (i == 0)
{
rpos = NodePosition.Left;
childNodes = parent.ChildLeftNodes;
}
else
{
rpos = NodePosition.Right;
childNodes = parent.ChildRightNodes;
}
float left = nView.Left + nView.Width + HOR_MARGIN;
float top = nView.Top - (int)((this.GetNodeHeight(parent, rpos) - nView.Height) / 2) - ((parent.Pos == NodePosition.Root) ? (int)(nView.Height / 2) : 0);
int topOffset;
foreach (MapNode rnode in childNodes)
{
NodeView tView = this.GetNodeView(rnode);
topOffset = (int)((this.GetNodeHeight(rnode, rpos) - tView.Height) / 2);
if (i == 0)
{
left = nView.Left - tView.Width - HOR_MARGIN;
}
tView.RefreshPosition(left, top + topOffset);
top += (topOffset * 2) + tView.Height + VER_MARGIN;
if (!rnode.Folded)
{
// recursive call
bool continueProcess = RefreshChildNodePositionsRecursive(rnode, NodePosition.Undefined);
if (!continueProcess)
{
return(false);
}
}
}
}
}
return(true);
}
private void ResetNodeTextSize(NodeView nView)
{
MapNode node = nView.Node;
nView.RefreshText();
if (node == node.Tree.RootNode) node.NodeView.RefreshPosition(node.NodeView.Left, node.NodeView.Top);
mapView.RefreshNodePositions(node.Parent != null ? node.Parent : node, NodePosition.Undefined);
mapView.Canvas.Invalidate();
}
public void BeginNodeEdit(NodeView nView, TextCursorPosition org)
{
if (!enabled) return;
MapNode node = nView.Node;
if (!node.HasChildren && nView.RecText.Width < TEXTBOX_DEFAULT_WIDTH)
{
IncreaseNodeTextSize(nView, TEXTBOX_DEFAULT_WIDTH);
}
else if(nView.RecText.Width < TEXTBOX_MIN_WIDTH)
{
IncreaseNodeTextSize(nView, TEXTBOX_MIN_WIDTH);
}
else
{
IncreaseNodeTextSize(nView, (int)(nView.RecText.Width + TEXTBOX_PADDING));
}
mapView.AdjustLocationToShowNodeView(nView);
this.editBox.Location = new Point(
(int)nView.RecText.X,
(int)nView.RecText.Y - 3
);
this.editBox.MinimumSize = new Size((int)nView.RecText.Width, (int)nView.RecText.Height);
this.editBox.Size = this.editBox.MinimumSize;
this.editBox.Text = node.Text;
this.editBox.Tag = node;
this.editBox.Visible = true;
this.editBox.BringToFront();
if (org == TextCursorPosition.End || org == TextCursorPosition.Undefined)
{
this.editBox.SelectionStart = node.Text.Length;
}
else if (org == TextCursorPosition.Start)
{
this.editBox.SelectionStart = 0;
}
this.editBox.SelectionLength = 0;
this.editBox.Focus();
this.IsTextEditing = true;
}
private void IncreaseNodeTextSize(NodeView nView, int width)
{
MapNode node = nView.Node;
nView.RefreshText(new SizeF(width, nView.RecText.Height));
if (node == node.Tree.RootNode) node.NodeView.RefreshPosition(node.NodeView.Left, node.NodeView.Top);
mapView.RefreshNodePositions(node.Parent != null ? node.Parent : node, NodePosition.Undefined);
mapView.Canvas.Invalidate();
}