private void ConnectableControl_MouseMove(object sender, MouseEventArgs e)
{
if (this.Capture == true && e.Button == MouseButtons.Right)
{
PetriNetEditor pne = (PetriNetEditor)this.Parent;
Panel pnl = (Panel)pne.Parent;
Point ptBegin = this.PointToScreen(ptMouseDragOffset);
ptBegin = pne.PointToClient(ptBegin);
pne.ptDragBegin = ptBegin;
Point ptEnd = this.PointToScreen(new Point(e.X, e.Y));
ptEnd = pne.PointToClient(ptEnd);
pne.ptDragEnd = ptEnd;
Control cBegin = this.GetChildAtPoint(ptBegin);
Control cEnd = this.GetChildAtPoint(ptEnd);
Point ptNewScrollPosition = new Point(0, 0);
if (ptEnd.X < -pnl.AutoScrollPosition.X || ptEnd.Y < -pnl.AutoScrollPosition.Y)
{
ptNewScrollPosition = new Point(Math.Min(ptEnd.X, -pnl.AutoScrollPosition.X), Math.Min(ptEnd.Y, -pnl.AutoScrollPosition.Y));
pnl.AutoScrollPosition = ptNewScrollPosition;
}
else if (ptEnd.X > (pnl.Width - 25 - pnl.AutoScrollPosition.X) || ptEnd.Y > (pnl.Height + 15 - pnl.AutoScrollPosition.Y))
{
ptNewScrollPosition = new Point(Math.Max(ptEnd.X - pnl.Width + 25, -pnl.AutoScrollPosition.X), Math.Min(ptEnd.Y - pnl.Height + 15, -pnl.AutoScrollPosition.Y));
pnl.AutoScrollPosition = ptNewScrollPosition;
}
else if (ptEnd.X > (pnl.Width - 25 - pnl.AutoScrollPosition.X) || ptEnd.Y > (pnl.Height - 15 - pnl.AutoScrollPosition.Y))
{
ptNewScrollPosition = new Point(Math.Max(ptEnd.X - pnl.Width + 25, -pnl.AutoScrollPosition.X), Math.Max(ptEnd.Y - pnl.Height + 15, -pnl.AutoScrollPosition.Y));
pnl.AutoScrollPosition = ptNewScrollPosition;
}
pne.Refresh();
}
}
private void ConnectableControl_MouseUp(object sender, MouseEventArgs e)
{
this.Cursor = Cursors.SizeAll;
PetriNetEditor pne = (PetriNetEditor)this.Parent;
pne.Invalidate();
if (pne.bConnecting == true)
{
pne.bConnecting = false;
Point ptEnd = this.PointToScreen(new Point(e.X, e.Y));
ptEnd = pne.PointToClient(ptEnd);
Control cEnd = pne.GetChildAtPoint(ptEnd);
if (cEnd is ConnectableControl && cEnd != this)
{
ConnectableControl cc = (ConnectableControl)cEnd;
if (this.CanConnectTo(cc))
{
if (this.alChilds.Contains(cc) != true)
{
// Set ptEnd to client coordinates of cc
ptEnd = pne.PointToScreen(ptEnd);
ptEnd = cc.PointToClient(ptEnd);
if (cc.CanConnectToThisPoint(ptEnd))
{
if (this is IConnector && cc is IConnector)
{
this.alChilds.Add(cc);
cc.alParents.Add(this);
#region Determine Output port
// Determine Output port
Port pOutput = null;
foreach (Port p in this.alOutputPorts)
{
GraphicsPath gp = new GraphicsPath();
gp.AddEllipse(ptMouseDragOffset.X - 1, ptMouseDragOffset.Y - 1, 2, 2);
Region r = new Region(gp);
r.Intersect(p.PortRegion);
RectangleF rf = r.GetBounds(this.CreateGraphics());
if (rf.Height != 0 || rf.Width != 0)
{
pOutput = p;
break;
}
}
#endregion
#region Determine Input port
// Determine Input port
Port pInput = null;
foreach (Port p in cc.alInputPorts)
{
GraphicsPath gp = new GraphicsPath();
gp.AddEllipse(ptEnd.X - 1, ptEnd.Y - 1, 2, 2);
Region r = new Region(gp);
r.Intersect(p.PortRegion);
RectangleF rf = r.GetBounds(this.CreateGraphics());
if (rf.Height != 0 || rf.Width != 0)
{
pInput = p;
break;
}
}
#endregion
// Scale to Port Bounds
RectangleF rfBegin = pOutput.PortRegion.GetBounds(this.CreateGraphics());
Point ptScaledBegin = new Point(ptMouseDragOffset.X - (int)rfBegin.X, ptMouseDragOffset.Y - (int)rfBegin.Y);
RectangleF rfEnd = pInput.PortRegion.GetBounds(this.CreateGraphics());
Point ptScaledEnd = new Point(ptEnd.X - (int)rfEnd.X, ptEnd.Y - (int)rfEnd.Y);
// Create new Connection Instance and add it
Connection cn = pne.CreateNewConnection(this, cc, pOutput.PortNumber, pInput.PortNumber, ptScaledBegin, ptScaledEnd, 1);
pne.Connections.Add(cn);
// To notify parent PetriNetEditor that new connection has been created
if (this.ConnectionCreated != null)
{
this.ConnectionCreated(cn, EventArgs.Empty);
}
// Raises PropertiesChanged event to notify Parent
// that Childs property is changed
if (this.PropertiesChanged != null)
{
this.PropertiesChanged(this, new EventArgs());
}
}
else
{
throw new InterfaceNotImplementedException("Not all conecting controls implement IConnector interface");
}
}
}
else
{
if (DialogResult.Yes == MessageBox.Show("Are you sure you want to delete this connection?", "Petri .NET Simulator 1.0 - Question", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Question))
{
// Remove this ConnectableControl from Parents collection of child cc
int iParentIndex = cc.Parents.IndexOf(this);
cc.Parents.Remove(this);
// Remove cc from this places Childs collection
this.alChilds.Remove(cc);
// Remove connection between these two controls
Connection cn = Connection.GetConnectionBetweenControls(this, cc);
pne.Connections.Remove(cn);
pne.Refresh();
if (this.PropertiesChanged != null)
{
this.PropertiesChanged(this, new EventArgs());
}
}
}
}
}
}
}