private void OnItemRemoved(BreadCrumbItem item)
{
if (ItemRemoved != null)
{
ItemRemoved(this, new BreadCrumbEventArgs(item));
}
RenderBreadCrumb();
}
protected override void OnMouseClick(MouseEventArgs e)
{
base.OnMouseClick(e);
BreadCrumbItem bc = GetItemUnder(e.Location);
if (bc != null)
{
if (ItemClicked != null)
{
ItemClicked(this, new BreadCrumbEventArgs(bc));
}
}
}
public BreadCrumbItem AddItem(string value)
{
BreadCrumbItem item = new BreadCrumbItem()
{
ID = Guid.NewGuid().ToString(),
Value = value,
Level = Items.Count()
};
Items.Add(item);
OnItemAdded(Items.Last());
return(item);
}
public void RemoveItemsAfter(BreadCrumbItem item)
{
Items.Sort();
if (Items.Contains(item))
{
while (Items.Last().ID != item.ID)
{
Items.Remove(Items.Last());
}
RenderBreadCrumb();
return;
}
throw new Exception("Cannot find item");
}
private void RenderBreadCrumb(int x = -1, int y = -1)
{
_mouseLocation = new Point(x, y);
int h = this.Height;
int xof = this.Height;
Items.First().Point0 = new PointF(0, 0);
Items.First().Point1 = new PointF(0 + xof, 0);
Items.First().Point2 = new PointF(0 + xof + h / 2, h / 2);
Items.First().Point3 = new PointF(0 + xof, h);
Items.First().Point4 = new PointF(0, h);
Items.First().Point5 = new PointF(0, h / 2);
if (Items.Count > 1)
{
Items.Sort();
BreadCrumbItem lastItem = Items[0];
foreach (BreadCrumbItem item in Items.ToList())
{
if (item.Value != "Home")
{
float p1 = lastItem.Region[1].X;
float p2 = lastItem.Region[2].X;
float p3 = lastItem.Region[3].X;
SizeF size;
using (Graphics g = this.CreateGraphics())
{
size = g.MeasureString(item.Value, this.Font);
}
float padding = (h - size.Height) / 2;
float xoffset = size.Width + padding * 2;
item.Point0 = new PointF(p1, 0);
item.Point1 = new PointF(p1 + xoffset, 0);
item.Point2 = new PointF(p2 + xoffset, h / 2);
item.Point3 = new PointF(p3 + xoffset, h);
item.Point4 = new PointF(p3, h);
item.Point5 = new PointF(p2, h / 2);
//item.Region = points;
item.TextLocation = new PointF(p2 + padding, padding);
}
lastItem = item;
}
}
Invalidate();
}
public BreadCrumbItem RemoveItems(BreadCrumbItem item)
{
Items.Sort();
if (Items.Contains(item))
{
if (Items.Count(it => it.ID == item.ID) > 0)
{
BreadCrumbItem i = Items.Last();
Items.Remove(i);
while (Items.Count > 0 && i.ID != item.ID)
{
i = Items.Last();
Items.Remove(i);
OnItemRemoved(i);
}
return(i);
}
}
throw new Exception("Cannot find item");
}
public BreadCrumbEventArgs(BreadCrumbItem item)
{
BreadCrumbItem = item;
}