/// <summary>
/// Dragging has started, see if VM is IDiagramLinkViewModel and notify of moving start.
/// </summary>
void DragThumb_DragStarted(object sender, DragStartedEventArgs e)
{
diagramDesigner = DiagramHelper.GetDiagramDesigner(this);
diagramDesignerVM = diagramDesigner.DataContext as IDiagramViewModel;
selectedItem = null;
selectedItemVM = null;
edgePointVM = this.DataContext as IEdgePointViewModel;
List <ISelectable> selection = diagramDesigner.SelectionService.CurrentSelection;
if (selection.Count == 1)
{
foreach (ISelectable item in selection)
{
if (item is DiagramDesignerItem)
{
if ((item as DiagramDesignerItem).IsDiagramLink)
{
selectedItem = item as DiagramDesignerItem;
}
}
}
// create control to display on the drag adorner
dragCanvas = new Canvas();
IDiagramLinkViewModel designerItem = selectedItem.DataContext as IDiagramLinkViewModel;
selectedItemVM = designerItem;
AddLinkAnchorAndShape(new PointD(designerItem.StartEdgePoint.X, designerItem.StartEdgePoint.Y),
new PointD(designerItem.EndEdgePoint.X, designerItem.EndEdgePoint.Y));
// create drag adorner
if (diagramDesigner != null && selectedItemVM != null && selectedItem != null && edgePointVM != null)
{
AdornerLayer adornerLayer = AdornerLayer.GetAdornerLayer(diagramDesigner);
if (adornerLayer != null)
{
this.dragAdorner = new DragAdorner(diagramDesigner, dragCanvas, false, 1.0);
if (this.dragAdorner != null)
{
adornerLayer.Add(this.dragAdorner);
e.Handled = true;
}
}
}
}
e.Handled = false;
}
/// <summary>
/// Dragging has started, see if VM is IDiagramLinkViewModel and notify of moving start.
/// </summary>
void DragThumb_DragStarted(object sender, DragStartedEventArgs e)
{
diagramDesigner = DiagramHelper.GetDiagramDesigner(this);
diagramDesignerVM = diagramDesigner.DataContext as IDiagramViewModel;
selectedItem = null;
selectedItemVM = null;
edgePointVM = this.DataContext as IEdgePointViewModel;
List<ISelectable> selection = diagramDesigner.SelectionService.CurrentSelection;
if (selection.Count == 1)
{
foreach (ISelectable item in selection)
{
if (item is DiagramDesignerItem)
if ((item as DiagramDesignerItem).IsDiagramLink)
{
selectedItem = item as DiagramDesignerItem;
}
}
// create control to display on the drag adorner
dragCanvas = new Canvas();
IDiagramLinkViewModel designerItem = selectedItem.DataContext as IDiagramLinkViewModel;
selectedItemVM = designerItem;
AddLinkAnchorAndShape(new PointD(designerItem.StartEdgePoint.X, designerItem.StartEdgePoint.Y),
new PointD(designerItem.EndEdgePoint.X, designerItem.EndEdgePoint.Y));
// create drag adorner
if (diagramDesigner != null && selectedItemVM != null && selectedItem != null && edgePointVM != null)
{
AdornerLayer adornerLayer = AdornerLayer.GetAdornerLayer(diagramDesigner);
if (adornerLayer != null)
{
this.dragAdorner = new DragAdorner(diagramDesigner, dragCanvas, false, 1.0);
if (this.dragAdorner != null)
{
adornerLayer.Add(this.dragAdorner);
e.Handled = true;
}
}
}
}
e.Handled = false;
}
