/// <summary>
/// The node is dragged.
/// </summary>
public void HandleMove(IInputModeContext context, PointD originalLocation, PointD newLocation)
{
handler.HandleMove(context, originalLocation, newLocation);
// stop changing the graph layout during re-parenting is taking place
if (reparentHandler == null || !reparentHandler.IsReparentGesture(context, node))
{
layoutHelper.RunLayout();
}
}
/// <summary>
/// Constrains the movement to one axis. This is done by calculating the
/// constrained location for the given new location, and invoking the
/// original handler with the constrained location.
/// </summary>
public void HandleMove(IInputModeContext context, PointD originalLocation, PointD newLocation)
{
// The larger difference in coordinates specifies whether this is
// a horizontal or vertical movement.
PointD delta = newLocation - originalLocation;
if (Math.Abs(delta.X) > Math.Abs(delta.Y))
{
newLocation = new PointD(newLocation.X, originalLocation.Y);
}
else
{
newLocation = new PointD(originalLocation.X, newLocation.Y);
}
if (newLocation != lastLocation)
{
handler.HandleMove(context, originalLocation, newLocation);
lastLocation = newLocation;
}
}
/// <summary>
/// The subtree is dragged.
/// </summary>
public void HandleMove(IInputModeContext context, PointD originalLocation, PointD newLocation)
{
compositeHandler.HandleMove(context, originalLocation, newLocation);
layoutHelper.RunLayout();
}
