protected override void OnMouseDown(MouseEventArgs e)
{
base.OnMouseDown(e);
_leftMouse = e.Button == MouseButtons.Left;
_stratPoint = e.Location;
int entityTYpe = -1;//0:ShapeBase;1:ShapeBase.connectors;2:connections;3:connections.From;4:connections.To.
Entity hoveredentity = shapes.Cast <ShapeBase>().FirstOrDefault(f =>
{
if (f.Hit(e.Location))
{
return(true);
}
return(false);
});
if (hoveredentity == null && selectedEntity != null && selectedEntity is ShapeBase)
{
Connector connector = (selectedEntity as ShapeBase).HitConnector(e.Location);
if (connector != null)
{
Point point = e.Location;
point.Offset(-this.ViewOriginPoint.GetPoint().X, -this.ViewOriginPoint.GetPoint().Y);
Connection connection = this.AddConnection(connector.Point, point);
connection.From.ContainEntity = connector.ContainEntity;
connection.From.ConnectorsIndexOfContainEntity = connector.ConnectorsIndexOfContainEntity;
UpdateSelected(connection.To);
connector.AttachConnector(connection.From);
tracking = true;
Invalidate(true);
return;
}
}
if (hoveredentity != null)
{
tracking = true;
OnSelectChanged(hoveredentity, new SelectElementChangedEventArgs()
{
CurrentEntity = hoveredentity, PreviousEntity = selectedEntity
});
}
else
{
hoveredentity = connections.Cast <Connection>().FirstOrDefault(f =>
{
if (f.Hit(e.Location))
{
entityTYpe = 2;
return(true);
}
if (f.From.Hit(e.Location))
{
entityTYpe = 3;
return(true);
}
if (f.To.Hit(e.Location))
{
entityTYpe = 4;
return(true);
}
return(false);
});
if (entityTYpe == 3)
{
hoveredentity = ((Connection)hoveredentity).From;
tracking = true;
}
else if (entityTYpe == 4)
{
hoveredentity = ((Connection)hoveredentity).To;
tracking = true;
}
else if (entityTYpe == 2)
{
OnSelectChanged(hoveredentity, new SelectElementChangedEventArgs()
{
CurrentEntity = hoveredentity, PreviousEntity = selectedEntity
});
}
}
if (hoveredentity == null)
{
OnSelectChanged(this.proxy, new SelectElementChangedEventArgs()
{
CurrentEntity = hoveredentity, PreviousEntity = selectedEntity
});
}
UpdateSelected(hoveredentity);
Invalidate(true);
}