public virtual void DrawConnections(Graphics g, Color outlineColor, NodePort selectedPort)
{
if (g == null)
{
throw new ArgumentNullException("g");
}
for (Int32 i = 0; i < InputsLength; i++)
{
if (GetInput(i).Connection != null)
{
Color color = Color.Black;
if (Object.ReferenceEquals(GetInput(i), selectedPort))
{
color = outlineColor;
}
NodeBase currentNode = GetInput(i).Connection.Node;
Int32 connectionIndex = 0;
for (Int32 j = 0; j < currentNode.OutputsLength; j++)
{
if (Object.ReferenceEquals(currentNode.GetOutput(j), GetInput(i).Connection))
{
connectionIndex = j;
break;
}
}
/* Calculate extreme points. */
Point output = new Point(
currentNode.BodyRectangle.X + currentNode.BodyRectangle.Width
, currentNode.BodyRectangle.Y + connectionIndex * currentNode.HeaderRectangle.Height + currentNode.HeaderRectangle.Height / 2 + 1
);
Point input = new Point(
BodyRectangle.X
, BodyRectangle.Y + i * HeaderRectangle.Height + HeaderRectangle.Height / 2 + 1
);
/* Draw connection shadow and the connection itself. */
g.DrawBezier(
_connectionPen
, input
, new Point(input.X - 26, input.Y + 4)
, new Point(output.X + 34, output.Y + 4)
, output
);
using (SolidBrush sb = new SolidBrush(color))
using (Pen pen = new Pen(sb, 2f))
{
g.DrawBezier(pen, input, new Point(input.X - 30, input.Y), new Point(output.X + 30, output.Y), output);
g.FillPolygon(sb, new Point[] { new Point(input.X - 5, input.Y - 5), input, new Point(input.X - 5, input.Y + 5) });
}
}
}
}
private void SetInput(Int32 index, String name, Object data, NodePort connection)
{
_inputs[index] = new NodePort(this, index);
_inputs[index].Name = name;
_inputs[index].Data = data;
_inputs[index].Connection = connection;
}
public void SetOutput(Int32 index, String name, Object data)
{
_outputs[index] = new NodePort(this, index);
_outputs[index].Name = name;
_outputs[index].Data = data;
}
public void SetInput(Int32 index, String name, NodePort connection)
{
SetInput(index, name, null, connection);
}
private void _pictureBox_MouseDown(Object sender, MouseEventArgs e)
{
Point contextPosition = new Point(e.X, e.Y);
if (_selectedProgram != null)
{
Boolean go = true;
_selectedNode = null;
if (_selectedProgram.Nodes.Count > 0)
{
Int32 mx = Convert.ToInt32(e.X / _scale);
Int32 my = Convert.ToInt32(e.Y / _scale);
_px = mx;
_px = my;
if (e.Button == MouseButtons.Left && _selectOperations)
{
// Select node.
// Loop backwards to select the one on top.
for (Int32 i = _selectedProgram.Nodes.Count - 1; i >= 0; i--)
{
NodeBase node = _selectedProgram.Nodes[i];
if (node.HeaderRectangle.IntersectsWith(new Rectangle(mx, my, 1, 1)))
{
_selectedNode = node;
_px = mx - node.ClientRectangle.X;
_py = my - node.ClientRectangle.Y;
_selectedProgram.Nodes.Insert(_selectedProgram.Nodes.Count, _selectedNode);
_selectedProgram.Nodes.RemoveAt(i);
i = -1;
}
}
// Connect port.
if (_selectedPort != null)
{
for (Int32 i = 0; i < _selectedProgram.Nodes.Count; i++)
{
NodeBase node = _selectedProgram.Nodes[i];
if (node.BodyRectangle.IntersectsWith(new Rectangle(mx, my, 1, 1)))
{
for (Int32 j = 0; j < node.OutputsLength; j++)
{
if (node.OutputRectCollection[j].IntersectsWith(new Rectangle(mx, my, 1, 1)))
{
if (_testConnections)
{
if (_selectedPort.IsCompatibleConnection(node.GetOutput(j)))
{
_selectedPort.Connection = node.GetOutput(j);
}
}
else
{
_selectedPort.Connection = node.GetOutput(j);
}
}
}
}
}
}
// Select port.
_selectedPort = null;
for (Int32 i = 0; i < _selectedProgram.Nodes.Count; i++)
{
NodeBase node = _selectedProgram.Nodes[i];
if (node.BodyRectangle.IntersectsWith(new Rectangle(mx, my, 1, 1)))
{
for (Int32 j = 0; j < node.InputsLength; j++)
{
if (node.InputRectCollection[j].IntersectsWith(new Rectangle(mx, my, 1, 1)))
{
_selectedPort = node.GetInput(j);
}
}
}
}
}
if (e.Button == MouseButtons.Right && _removeOperations)
{
// Remove node
for (Int32 i = 0; i < _selectedProgram.Nodes.Count; i++)
{
NodeBase node = _selectedProgram.Nodes[i];
if (node.HeaderRectangle.IntersectsWith(new Rectangle(mx, my, 1, 1)))
{
_selectedNode = node;
}
}
if (_selectedNode != null)
{
ContextMenu conextMenu = new ContextMenu();
MenuItem deleteNodeMenuItem = new MenuItem(Resources.Text_DeleteNode);
deleteNodeMenuItem.Click += delegate
{
RemoveNode(_selectedNode);
};
go = false;
conextMenu.MenuItems.Add(deleteNodeMenuItem);
conextMenu.Show(this, contextPosition);
}
// Remove connection
_selectedPort = null;
for (Int32 i = 0; i < _selectedProgram.Nodes.Count; i++)
{
NodeBase node = _selectedProgram.Nodes[i];
if (node.BodyRectangle.IntersectsWith(new Rectangle(mx, my, 1, 1)))
{
for (Int32 j = 0; j < node.InputsLength; j++)
{
if (node.InputRectCollection[j].IntersectsWith(new Rectangle(mx, my, 1, 1)))
{
_selectedPort = node.GetInput(j);
}
}
}
}
if (_selectedPort != null)
{
go = false;
ContextMenu contextMenu = new ContextMenu();
MenuItem removeConnectionMenuItem = new MenuItem(Resources.Text_RemoveConnection);
removeConnectionMenuItem.Click += delegate
{
_selectedPort.Connection = null;
};
contextMenu.MenuItems.Add(removeConnectionMenuItem);
contextMenu.Show(this, contextPosition);
}
}
}
if (e.Button == MouseButtons.Right && _upOperations)
{
// Go to parent program.
if (go)
{
if (_selectedNode == null)
{
if (_selectedProgram.ParentProgram != null)
{
foreach (NodeBase node in _selectedProgram.ParentProgram.Nodes)
{
node.Update(new Point(node.HeaderRectangle.X, node.HeaderRectangle.Y), CreateGraphics(), Font);
}
_selectedProgram = _selectedProgram.ParentProgram;
}
}
}
}
}
_pictureBox.Invalidate();
OnMouseDown(e);
}
/*
* OpenSchema
*/
public void OpenSchema(String fileName)
{
_program = Program.Load(fileName);
_selectedProgram = _program;
_selectedNode = null;
_selectedPort = null;
}
/*
* NewSchema
*/
public void NewSchema()
{
_program = new Program();
_selectedProgram = _program;
_selectedNode = null;
_selectedPort = null;
}
/*
* IsCompatibleConnection
*/
/// <summary>
/// </summary>
/// <param name="nodePortToCheck"></param>
/// <returns></returns>
/// <exception cref="ArgumentNullException">
/// <para><paramref name="nodePortToCheck"/> is <see langword="null"/>.</para>
/// </exception>
public Boolean IsCompatibleConnection(NodePort nodePortToCheck)
{
if (nodePortToCheck == null)
{
throw new ArgumentNullException("nodePortToCheck");
}
try
{
if (_data != null && nodePortToCheck._data != null)
{
Type dataType = _data.GetType();
Type anotherDataType = nodePortToCheck._data.GetType();
return dataType == anotherDataType;
}
}
catch
{
return true;
}
return false;
}