// Assume the header is at the top, and the lifeline stroke and port extend down
// from the middle of the bottom of the header.
// The Lifeline's Activations are arranged vertically according to their Begin
// and End step values.
// The stroke and port are just tall enough to accomodate all Activations and all
// Messages that connect to this Lifeline.
public override void LayoutChildren(GoObject childchanged)
{
if (this.Initializing)
{
return;
}
if (this.Count < 3)
{
return;
}
GoObject header = this[0];
GoStroke line = this[1] as GoStroke;
GoObject port = this[2];
PointF p = header.GetSpotLocation(MiddleBottom);
// find last step of an Activation on this Lifeline or a Message connected to this Lifeline
float maxend = 0;
foreach (GoObject child in this)
{
Activation act = child as Activation;
if (act != null)
{
act.SetSpotLocation(MiddleTop, GetStepPoint(act.Begin));
act.Height = Math.Max(10, (act.End - act.Begin) * MessageSpacing);
maxend = Math.Max(maxend, act.End);
}
}
foreach (IGoLink link in this.Port.Links)
{
Message msg = link as Message;
if (msg != null)
{
maxend = Math.Max(maxend, msg.Step);
}
}
// line connects to bottom of header
line.SetPoint(0, p);
line.SetPoint(1, new PointF(p.X, LineStart + maxend * MessageSpacing));
// port always starts at LineStart
port.Bounds = new RectangleF(p.X - port.Width / 2, LineStart, port.Width, maxend * MessageSpacing);
}
internal PointF GetSideLinkPoint(GoBoxPortLinkInfo info)
{
GoObject goObject = PortObject;
if (goObject == null || goObject.Layer == null)
{
goObject = this;
}
PointF spotLocation;
PointF spotLocation2;
switch (info.Side)
{
case 128:
spotLocation = goObject.GetSpotLocation(8);
spotLocation2 = goObject.GetSpotLocation(16);
break;
case 256:
spotLocation = goObject.GetSpotLocation(16);
spotLocation2 = goObject.GetSpotLocation(2);
break;
case 32:
spotLocation = goObject.GetSpotLocation(2);
spotLocation2 = goObject.GetSpotLocation(4);
break;
default:
spotLocation = goObject.GetSpotLocation(4);
spotLocation2 = goObject.GetSpotLocation(8);
break;
}
float num = spotLocation2.X - spotLocation.X;
float num2 = spotLocation2.Y - spotLocation.Y;
float num3 = ((float)info.IndexOnSide + 1f) / ((float)info.CountOnSide + 1f);
return(new PointF(spotLocation.X + num * num3, spotLocation.Y + num2 * num3));
}
/// <summary>
/// Determine the link point by judging where the link is coming
/// from, and at what angle.
/// </summary>
/// <param name="link"></param>
/// <returns>a <c>PointF</c> on the edge of the port, in document coordinates</returns>
public override PointF GetToLinkPoint(IGoLink link)
{
GoObject goObject = PortObject;
if (goObject == null || goObject.Layer == null)
{
goObject = this;
}
if (ToSpot != 0 && ToSpot != 1)
{
return(goObject.GetSpotLocation(ToSpot));
}
if (link == null || link.GoObject == null)
{
return(goObject.Center);
}
if (LinkPointsSpread)
{
GoBoxPortLinkInfo[] linkInfos = GetLinkInfos();
foreach (GoBoxPortLinkInfo goBoxPortLinkInfo in linkInfos)
{
if (goBoxPortLinkInfo.Link == link)
{
return(goBoxPortLinkInfo.LinkPoint);
}
}
}
int toSides = ToSides;
switch (toSides)
{
case 128:
return(goObject.GetSpotLocation(128));
case 256:
return(goObject.GetSpotLocation(256));
case 32:
return(goObject.GetSpotLocation(32));
case 64:
return(goObject.GetSpotLocation(64));
default:
{
float num = GetAngle(link);
switch (toSides)
{
case 160:
if (num > 180f)
{
return(goObject.GetSpotLocation(32));
}
return(goObject.GetSpotLocation(128));
case 320:
if (num > 90f && num <= 270f)
{
return(goObject.GetSpotLocation(256));
}
return(goObject.GetSpotLocation(64));
default:
{
float num2 = (float)(Math.Atan2(goObject.Height, goObject.Width) * 180.0 / Math.PI);
switch (toSides)
{
case 288:
if (num > num2 && num <= 180f + num2)
{
return(goObject.GetSpotLocation(256));
}
return(goObject.GetSpotLocation(32));
case 96:
if (num > 180f - num2 && num <= 360f - num2)
{
return(goObject.GetSpotLocation(32));
}
return(goObject.GetSpotLocation(64));
case 192:
if (num > num2 && num <= 180f + num2)
{
return(goObject.GetSpotLocation(128));
}
return(goObject.GetSpotLocation(64));
case 384:
if (num > 180f - num2 && num <= 360f - num2)
{
return(goObject.GetSpotLocation(256));
}
return(goObject.GetSpotLocation(128));
case 352:
if (num > 90f && num <= 180f + num2)
{
return(goObject.GetSpotLocation(256));
}
if (num > 180f + num2 && num <= 360f - num2)
{
return(goObject.GetSpotLocation(32));
}
return(goObject.GetSpotLocation(64));
case 224:
if (num > 180f && num <= 360f - num2)
{
return(goObject.GetSpotLocation(32));
}
if (num > num2 && num <= 180f)
{
return(goObject.GetSpotLocation(128));
}
return(goObject.GetSpotLocation(64));
case 448:
if (num > num2 && num <= 180f - num2)
{
return(goObject.GetSpotLocation(128));
}
if (num > 180f - num2 && num <= 270f)
{
return(goObject.GetSpotLocation(256));
}
return(goObject.GetSpotLocation(64));
case 416:
if (num > 180f - num2 && num <= 180f + num2)
{
return(goObject.GetSpotLocation(256));
}
if (num > 180f + num2)
{
return(goObject.GetSpotLocation(32));
}
return(goObject.GetSpotLocation(128));
default:
{
if (IsOrthogonal(link) && toSides != 480)
{
num += 15f;
if (num >= 360f)
{
num -= 360f;
}
}
int num3 = 1;
num3 = ((num > num2 && num < 180f - num2) ? 128 : ((num >= 180f - num2 && num <= 180f + num2) ? 256 : ((!(num > 180f + num2) || !(num < 360f - num2)) ? 64 : 32)));
return(goObject.GetSpotLocation(num3));
}
}
}
}
}
}
}