private Connection AttachToConnection(Connection connection)
{
if (connection == null)
{
return(null);
}
Connector t_from = connection.From;
Connector t_to = connection.To;
Connection t_conn1 = null; //the new connection attached by connector
Connection t_conn2 = null;
if (LeftConnector.Location.Y <= t_to.Location.Y)
{
t_conn1 = new FlowChartConnection(Site);
t_conn1.Insert(t_from, LeftConnector);
t_conn2 = new FlowChartConnection(Site);
t_conn2.Insert(LeftConnector, t_to);
connection.Remove();
}
if (t_to.Location.Y < LeftConnector.Location.Y)
{
t_conn1 = new FlowChartConnection(LeftConnector.Site);
t_conn1.Insert(t_to, LeftConnector);
}
//Horizontally move shape of connector to connection
HorizonMoveTo(t_to.Location.X);
return(t_conn1);
}
private void AttachFromBelow(Connector connector)
{
Connection t_outConnection = null;
foreach (Connection connection in connector.Connections)
{
if (connection.From == connector)
{
t_outConnection = connection;
break;
}
}
Connection t_conn1 = null;
Connection t_conn2 = null;
t_conn1 = new FlowChartConnection(Site);
t_conn1.Insert(connector, LeftConnector);
if (t_outConnection != null)
{
t_conn2 = new FlowChartConnection(Site);
t_conn2.Insert(LeftConnector, t_outConnection.To);
t_outConnection.Remove();
}
//Horizontally move shape of connector to connection
HorizonMoveTo(connector.Location.X);
}
private void AttachFromAbove(Connector connector)
{
Connection t_inConnection = null;
foreach (Connection connection in connector.Connections)
{
if (connection.To == connector)
{
t_inConnection = connection;
break;
}
}
Connection t_conn1 = null; //the new connection attached by connector
Connection t_conn2 = null;
if (t_inConnection != null)
{
t_conn1 = new FlowChartConnection(Site);
t_conn1.Insert(t_inConnection.From, LeftConnector);
t_inConnection.Remove();
}
t_conn2 = new FlowChartConnection(Site);
t_conn2.Insert(LeftConnector, connector);
//Horizontally move shape of connector to connection
HorizonMoveTo(connector.Location.X);
}
private void DetachLeftSideConnections()
{
Connection t_inConnection = null;
Connection t_outConnection = null;
foreach (Connection connection in LeftConnector.Connections)
{
if (connection.To == LeftConnector)
{
t_inConnection = connection;
continue;
}
if (connection.From == LeftConnector)
{
t_outConnection = connection;
}
}
float t_stickX = 0;
if (t_inConnection != null && t_outConnection != null)
{
t_stickX = t_outConnection.To.Location.X;
Connection t_conn = new FlowChartConnection(Site);
t_conn.Insert(t_inConnection.From, t_outConnection.To);
}
if (t_inConnection != null)
{
if (IsVerticalConnection(t_inConnection))
{
t_stickX = t_inConnection.From.Location.X;
}
t_inConnection.Remove();
}
if (t_outConnection != null)
{
if (IsVerticalConnection(t_outConnection))
{
t_stickX = t_outConnection.To.Location.X;
}
t_outConnection.Remove();
}
t_stickX = t_stickX < Rectangle.X ? t_stickX + m_autoShiftX + 1 : t_stickX - m_autoShiftX - 1;
HorizonMoveTo(t_stickX);
}
public virtual Connection CreateConnection(Connector connector)
{
FlowChartConnection connection = new FlowChartConnection();
return(connection);
}