static void Fe_MouseEnter(object sender, MouseEventArgs e)
{
if (((FrameworkElement)sender).DataContext is DesignerItemViewModelBase)
{
DesignerItemViewModelBase designerItem = (DesignerItemViewModelBase)((FrameworkElement)sender).DataContext;
designerItem.ShowConnectors = true;
}
}
protected override void OnDrop(DragEventArgs e)
{
base.OnDrop(e);
DragObject dragObject = e.Data.GetData(typeof(DragObject)) as DragObject;
if (dragObject != null)
{
(DataContext as IDiagramViewModel).ClearSelectedItemsCommand.Execute(null);
Point position = e.GetPosition(this);
DesignerItemViewModelBase itemBase = (DesignerItemViewModelBase)Activator.CreateInstance(dragObject.ContentType);
itemBase.Left = Math.Max(0, position.X - itemBase.ItemWidth / 2);
itemBase.Top = Math.Max(0, position.Y - itemBase.ItemHeight / 2);
itemBase.IsSelected = true;
(DataContext as IDiagramViewModel).AddItemCommand.Execute(itemBase);
}
e.Handled = true;
}
public FullyCreatedConnectorInfo(DesignerItemViewModelBase dataItem, ConnectorOrientation orientation)
: base(orientation)
{
this.DataItem = dataItem;
}
protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
if (SourceConnector != null)
{
if (e.LeftButton == MouseButtonState.Pressed)
{
Point currentPoint = e.GetPosition(this);
partialConnection.SinkConnectorInfo = new PartCreatedConnectionInfo(currentPoint);
HitTesting(currentPoint);
}
}
else
{
// if mouse button is not pressed we have no drag operation, ...
if (e.LeftButton != MouseButtonState.Pressed)
{
rubberbandSelectionStartPoint = null;
initialDragPoint = null;
}
if (this.initialDragPoint.HasValue && this.DataContext is DesignerItemViewModelBase)
{
Mouse.SetCursor(Cursors.SizeAll);
DesignerItemViewModelBase item = (DesignerItemViewModelBase)this.DataContext;
double minLeft = double.MaxValue;
double minTop = double.MaxValue;
Point currentPoint = e.GetPosition(this);
IDiagramViewModel designerCanvas = item.Parent as IDiagramViewModel;
Rect rekt = PointHelper.GetBoundingRectangle(designerCanvas.Items, 10);
double left = item.Left;
double top = item.Top;
minLeft = double.IsNaN(left) ? 0 : Math.Min(left, minLeft);
minTop = double.IsNaN(top) ? 0 : Math.Min(top, minTop);
double deltaHorizontal = Math.Max(-minLeft, currentPoint.X - initialDragPoint.Value.X);
double deltaVertical = Math.Max(-minTop, currentPoint.Y - initialDragPoint.Value.Y);
item.Left += deltaHorizontal;
item.Top += deltaVertical;
if (item.Parent is IDiagramViewModel && item.Parent is DesignerItemViewModelBase)
{
DesignerItemViewModelBase groupItem = (DesignerItemViewModelBase)item.Parent;
if (item.Left + item.ItemWidth >= groupItem.ItemWidth)
{
item.Left = groupItem.ItemWidth - item.ItemWidth;
}
if (item.Top + item.ItemHeight >= groupItem.ItemHeight)
{
item.Top = groupItem.ItemHeight - item.ItemHeight;
}
}
e.Handled = true;
}
else
{
// ... but if mouse button is pressed and start
// point value is set we do have one
if (this.rubberbandSelectionStartPoint.HasValue)
{
// create rubberband adorner
AdornerLayer adornerLayer = AdornerLayer.GetAdornerLayer(this);
if (adornerLayer != null)
{
RubberbandAdorner adorner = new RubberbandAdorner(this, rubberbandSelectionStartPoint);
if (adorner != null)
{
adornerLayer.Add(adorner);
}
}
}
}
}
e.Handled = true;
}
public FullyCreatedConnectorInfo(DesignerItemViewModelBase dataItem, ConnectorOrientation orientation)
: base(orientation)
{
this.DataItem = dataItem;
}