private void MoveNode(double x, double y, Node node, Diagram diagram)
{
if (diagram.SnapToGrid)
{
node.X = SnapGrid.Snap(node.X + x, GridSize, GridOffsetLeft);
node.Y = SnapGrid.Snap(node.Y + y, GridSize, GridOffsetTop);
}
else
{
node.X += x;
node.Y += y;
}
}
private void ItemsControl_Drop(object sender, DragEventArgs e)
{
if (e.Data.GetDataPresent("ControlTypeFormat"))
{
string type = e.Data.GetData("ControlTypeFormat") as string;
var parent = (ItemsControl)sender;
var diagram = this.DataContext as Diagram;
Point p = e.GetPosition(parent);
if (diagram.SnapToGrid)
{
p = new Point()
{
X = SnapGrid.Snap(p.X, GridSize, GridOffsetLeft),
Y = SnapGrid.Snap(p.Y, GridSize, GridOffsetTop)
};
}
DiagramAddDefaultItem(type, diagram, p);
}
}
