private void ConnectorViewModel_PropertyChanged(object sender, PropertyChangedEventArgs e)
{
switch (e.PropertyName)
{
case "Left":
case "Top":
SourceA = PointHelper.GetPointForConnector(this.SourceConnectorInfo);
if (this.SinkConnectorInfo is FullyCreatedConnectorInfo)
{
SourceB = PointHelper.GetPointForConnector((FullyCreatedConnectorInfo)this.SinkConnectorInfo);
}
break;
}
}
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;
}
