protected override void OnDrop(DragEventArgs e)
{
base.OnDrop(e);
string xamlString = e.Data.GetData("DESIGNER_ITEM") as string;
if (!String.IsNullOrEmpty(xamlString))
{
DesignerItem newItem = null;
//FrameworkElement content = XamlReader.Load(XmlReader.Create(new StringReader(xamlString))) as FrameworkElement;
Button content = new Button()
{
Content = xamlString, Background = Brushes.Gray
};
content.IsHitTestVisible = false;
if (content != null)
{
newItem = new DesignerItem();
newItem.Style = this.TryFindResource("DesignerItemStyle") as Style;
newItem.Content = content;
Point position = e.GetPosition(this);
//if (content.MinHeight != 0 && content.MinWidth != 0)
//{
// newItem.Width = content.MinWidth * 2; ;
// newItem.Height = content.MinHeight * 2;
//}
//else
//{
// newItem.Width = 65;
// newItem.Height = 65;
//}
double unitwidth = this.ActualWidth / MyCols;
double unitheight = this.ActualHeight / MyRows;
newItem.Width = unitwidth;
newItem.Height = unitheight;
double left = Math.Floor(position.X / unitwidth) * unitwidth;
double top = Math.Floor(position.Y / unitheight) * unitheight;
DesignerCanvas.SetLeft(newItem, Math.Max(0, left /*position.X - newItem.Width / 2*/));
DesignerCanvas.SetTop(newItem, Math.Max(0, top /*position.Y - newItem.Height / 2*/));
this.Children.Add(newItem);
this.DeselectAll();
newItem.IsSelected = true;
}
e.Handled = true;
}
}
protected override void OnMouseDoubleClick(MouseButtonEventArgs e)
{
base.OnMouseDoubleClick(e);
DesignerCanvas designer = VisualTreeHelper.GetParent(this) as DesignerCanvas;
if (designer != null)
{
double h = designer.ActualHeight / designer.MyRows;
double w = designer.ActualWidth / designer.MyCols;
double left = DesignerCanvas.GetLeft(this);
double top = DesignerCanvas.GetTop(this);
double newleft = System.Math.Floor(left / w) * w;
double newtop = System.Math.Floor(top / h) * h;
double newright = System.Math.Ceiling((left + this.ActualWidth) / w) * w;
double newbottom = System.Math.Ceiling((top + this.ActualHeight) / h) * h;
DesignerCanvas.SetLeft(this, newleft);
DesignerCanvas.SetTop(this, newtop);
this.Width = newright - newleft;
this.Height = newbottom - newtop;
}
}