private static void NodeControl_NodeChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
NodeControl me = d as NodeControl;
me.NodeInfo = e.NewValue as NodeInfo;
}
private void Canvas_MouseMove(object sender, MouseEventArgs e)
{
Canvas canvas = sender as Canvas;
if (movingNodeOrigins.Count > 0)
{
Point mousePosition = e.GetPosition(canvas);
mousePosition = new Point(mousePosition.X - PanX, mousePosition.Y - PanY);
foreach (NodeControl nodeControl in movingNodeOrigins.Keys)
{
ContentPresenter contentPresenter = VisualTreeHelper.GetParent(nodeControl) as ContentPresenter;
Point nodeControlPosition = new Point(mousePosition.X / Scale - movingNodeOffsets[nodeControl].Value.X, mousePosition.Y / Scale - movingNodeOffsets[nodeControl].Value.Y);
nodeControlPosition.X = Math.Round(nodeControlPosition.X / 4) * 4;
nodeControlPosition.Y = Math.Round(nodeControlPosition.Y / 4) * 4;
contentPresenter.SetValue(Canvas.LeftProperty, nodeControlPosition.X);
contentPresenter.SetValue(Canvas.TopProperty, nodeControlPosition.Y);
}
}
if (creatingNewLink)
{
DependencyObject overElement = e.OriginalSource as DependencyObject;
while (overElement != null && !(overElement is NodeControl))
{
overElement = VisualTreeHelper.GetParent(overElement);
}
NodeControl nodeControl = overElement as NodeControl;
if (nodeControl != null)
{
DestinationAnchorBinder.Anchor = nodeControl.NodeAnchor;
}
else
{
Point mousePosition = e.GetPosition(canvas);
DestinationAnchorBinder.Anchor = DestinationAnchor;
DestinationAnchorBinder.Anchor.SetValue(Canvas.LeftProperty, mousePosition.X / Scale - PanX);
DestinationAnchorBinder.Anchor.SetValue(Canvas.TopProperty, mousePosition.Y / Scale - PanY);
}
NotifyPropertyChanged(nameof(DestinationAnchorBinder));
}
if (Panning)
{
Point panningPosition = e.GetPosition(EditorScroller);
PanX += (panningPosition.X - panningStart.X) / Scale;
PanY += (panningPosition.Y - panningStart.Y) / Scale;
panningStart = panningPosition;
}
if (Selecting)
{
Point mousePosition = e.GetPosition(EditorCanvas);
SelectionEnd = new Point(mousePosition.X + PanX, mousePosition.Y + PanY);
SelectedNodes.Clear();
Rect selectionRect = new Rect(SelectionStart, SelectionEnd);
foreach (var pair in nodeControls)
{
Rect nodeRect = new Rect(pair.Key.X + PanX, pair.Key.Y + PanY, pair.Value.ActualWidth, pair.Value.ActualHeight);
if (selectionRect.IntersectsWith(nodeRect))
{
SelectedNodes.Add(pair.Key);
}
}
UpdateThumbnail();
}
}