public void ReGroup()
{
for (int i = 0; i < Selection.Count; i++)
{
if (Selection[i].GetType().Equals(typeof(GroupShapeImpl)))
{
GroupShapeImpl group = (GroupShapeImpl)Selection[i];
ShapeList.AddRange(group.SubItem);
group.SubItem.Clear();
Selection[i] = null;
group = null;
ShapeList.Remove(Selection[i]);
Selection.Remove(Selection[i]);
}
}
GC.Collect();
}
public void GroupSelected()
{
if (Selection.Count < 2)
{
return;
}
float minX = float.PositiveInfinity;
float minY = float.PositiveInfinity;
float maxX = float.NegativeInfinity;
float maxY = float.NegativeInfinity;
foreach (var item in Selection)
{
if (minX > item.Location.X)
{
minX = item.Location.X;
}
if (minY > item.Location.Y)
{
minY = item.Location.Y;
}
if (maxX < item.Location.X + item.Width)
{
maxX = item.Location.X + item.Width;
}
if (maxY < item.Location.Y + item.Height)
{
maxY = item.Location.Y + item.Height;
}
}
var group = new GroupShapeImpl(new RectangleF(minX, minY, maxX - minX, maxY - minY));
group.SubItem = Selection;
foreach (var item in Selection)
{
ShapeList.Remove(item);
}
Selection = new List <Shape>();
Selection.Add(group);
ShapeList.Add(group);
}