private void PanelDragEnter(object sender, DragEventArgs e)
{
var pos = TableLayout.GetPositionFromControl((Control)sender);
var point = new Point(pos.Column, pos.Row);
if (e.Data.GetDataPresent(typeof(Point)))
{
e.Effect = DragDropEffects.Link;
}
ColourPanels(point);
}
private void PanelMouseDown(object sender, MouseEventArgs e)
{
var pos = TableLayout.GetPositionFromControl((Control)sender);
_dragStart = new Point(pos.Column, pos.Row);
ColourPanels(_dragStart);
// This call blocks!
((Control)sender).DoDragDrop(_dragStart, DragDropEffects.Link);
foreach (Control control in TableLayout.Controls)
{
control.BackColor = Color.Black;
}
}
private void PanelDragDrop(object sender, DragEventArgs e)
{
var startPoint = (Point)e.Data.GetData(typeof(Point));
var pos = TableLayout.GetPositionFromControl((Control)sender);
var endPoint = new Point(pos.Column, pos.Row);
var minx = Math.Min(startPoint.X, endPoint.X);
var maxx = Math.Max(startPoint.X, endPoint.X);
var miny = Math.Min(startPoint.Y, endPoint.Y);
var maxy = Math.Max(startPoint.Y, endPoint.Y);
var rectangle = new Rectangle(minx, miny, maxx - minx + 1, maxy - miny + 1);
SelectedConfiguration.Configuration.Rectangles.RemoveAll(x => x.IntersectsWith(rectangle));
SelectedConfiguration.Configuration.Rectangles.Add(rectangle);
UpdateTableLayout();
_dragStart = Point.Empty;
}
internal TableLayoutPanelCellPosition GetPositionFromControl(IArrangedElement element)
{
return(TableLayout.GetPositionFromControl(Owner, element));
}