public void AutoSizeColumn(TreeColumn column)
{
if (!Columns.Contains(column))
throw new ArgumentException("column");
DrawContext context = new DrawContext();
context.Graphics = Graphics.FromImage(new Bitmap(1, 1));
context.Font = this.Font;
int res = 0;
for (int row = 0; row < RowCount; row++)
{
if (row < RowMap.Count)
{
int w = 0;
TreeNodeAdv node = RowMap[row];
foreach (NodeControl nc in NodeControls)
{
if (nc.ParentColumn == column)
w += nc.GetActualSize(node, _measureContext).Width;
}
res = Math.Max(res, w);
}
}
if (res > 0)
column.Width = res;
}
public ReorderColumnState(TreeViewAdv tree, TreeColumn column, Point initialMouseLocation)
: base(tree, column)
{
_location = new Point(initialMouseLocation.X + Tree.OffsetX, 0);
_dragOffset = tree.GetColumnX(column) - initialMouseLocation.X;
_ghostImage = column.CreateGhostImage(new Rectangle(0, 0, column.Width, tree.ColumnHeaderHeight), tree.Font);
}
public override bool MouseMove(MouseEventArgs args)
{
_dropColumn = null;
_location = new Point(args.X + Tree.OffsetX, 0);
int x = 0;
foreach (TreeColumn c in Tree.Columns)
{
if (c.IsVisible)
{
if (_location.X < x + c.Width / 2)
{
_dropColumn = c;
break;
}
x += c.Width;
}
}
Tree.UpdateHeaders();
return true;
}
public TreeColumnEventArgs(TreeColumn column)
{
_column = column;
}
public ResizeColumnState(TreeViewAdv tree, TreeColumn column, Point p)
: base(tree, column)
{
_initLocation = p;
_initWidth = column.Width;
}
internal void OnColumnReordered(TreeColumn column)
{
if (ColumnReordered != null)
ColumnReordered(this, new TreeColumnEventArgs(column));
}
internal void OnColumnWidthChanged(TreeColumn column)
{
if (ColumnWidthChanged != null)
ColumnWidthChanged(this, new TreeColumnEventArgs(column));
}
internal void ChangeColumnWidth(TreeColumn column)
{
if (!(_input is ResizeColumnState))
{
FullUpdate();
OnColumnWidthChanged(column);
}
}
private void UpdateToolTip(MouseEventArgs e)
{
TreeColumn col = GetColumnAt(e.Location);
if (col != null)
{
if (col != _tooltipColumn)
SetTooltip(col.TooltipText);
}
else
DisplayNodesTooltip(e);
_tooltipColumn = col;
}
internal int GetColumnX(TreeColumn column)
{
int x = -OffsetX;
foreach (TreeColumn col in Columns)
{
if (col.IsVisible)
{
if (column == col)
return x;
else
x += col.Width;
}
}
return x;
}
public ColumnState(TreeViewAdv tree, TreeColumn column)
: base(tree)
{
_column = column;
}
public ClickColumnState(TreeViewAdv tree, TreeColumn column, Point location)
: base(tree, column)
{
_location = location;
}
