private void CreateTree()
{
// Get width / height of node surface
int nodeSurfaceWidth, nodeSurfaceHeight;
NodeSurface.GetDimensions(out nodeSurfaceWidth, out nodeSurfaceHeight);
// Count the depth of the topology
int numLevels = CountLevels(m_baseNode, 1);
int heightPerLevel = m_usedHeight / numLevels;
if (heightPerLevel < (nodeSurfaceHeight + k_vertSpacing))
{
m_usedHeight = numLevels * (nodeSurfaceHeight + k_vertSpacing);
heightPerLevel = m_usedHeight / numLevels;
}
int overlap = -1;
while (overlap != 0)
{
ClearVectors();
overlap = ParseNode(m_baseNode, m_usedWidth, heightPerLevel, 0, 0);
m_usedWidth += overlap;
}
}
private void SetColors()
{
m_legendPCColor.BackColor = NodeSurface.GetNodeColor(ManagedTopologyNode.NodeType.Computer);
m_legendBusColor.BackColor = NodeSurface.GetNodeColor(ManagedTopologyNode.NodeType.Bus);
m_legendNodeColor.BackColor = NodeSurface.GetNodeColor(ManagedTopologyNode.NodeType.Node);
m_legendCameraColor.BackColor = NodeSurface.GetNodeColor(ManagedTopologyNode.NodeType.Camera);
}
private void InsertNewNodeSurface(ManagedTopologyNode node, int xPos, int yPos)
{
NodeSurface nodeSurface = new NodeSurface();
bool selected = false;
if (m_selectedGuid.Equals(node.GetGuid()) && m_isSelectionValid == true)
{
selected = true;
}
nodeSurface.Update(node, selected);
nodeSurface.SetPosition(xPos, yPos);
m_nodeSurfaces.Add(nodeSurface);
}
private void DrawTree(Graphics drawingAreaGraphics)
{
drawingAreaGraphics.Clear(Color.White);
drawingAreaGraphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
// Get width / height of node surface
int nodeSurfaceWidth, nodeSurfaceHeight;
NodeSurface.GetDimensions(out nodeSurfaceWidth, out nodeSurfaceHeight);
// Draw node surfaces
for (int i = 0; i < m_nodeSurfaces.Count; i++)
{
NodeSurface currNodeSurface = m_nodeSurfaces[i];
int xPos, yPos;
currNodeSurface.GetPosition(out xPos, out yPos);
xPos -= nodeSurfaceWidth / 2;
yPos -= nodeSurfaceHeight / 2;
drawingAreaGraphics.DrawImage(currNodeSurface.GetBitmapImage(), xPos, yPos);
}
// Draw Draw Node Connector
for (int i = 0; i < m_lines.Count; i++)
{
Line line = m_lines[i];
Pen pen = new Pen(Brushes.Black, 4.0f);
int portWidth, portHeight;
NodeSurface.GetPortDimensions(out portWidth, out portHeight);
Point[] points = new Point[]
{
new Point(line.StartX, line.StartY - (portHeight / 2)),
new Point(line.StartX, line.StartY + 5),
new Point(line.EndX, line.EndY - 5),
new Point(line.EndX, line.EndY + (portHeight / 2))
};
drawingAreaGraphics.DrawLines(pen, points);
}
}
/** Checks if the position specified is over a camera node surface. */
private bool IsSelectionValid(MouseEventArgs e, ref ManagedPGRGuid selectedGuid)
{
float displayAspectRatio = 1 / (m_currAspectRatio * m_imageZoom);
float actualX = (float)e.X * displayAspectRatio;
float actualY = (float)e.Y * displayAspectRatio;
// Get the node surface width
int surfaceWidth, surfaceHeight;
NodeSurface.GetDimensions(out surfaceWidth, out surfaceHeight);
actualX += (surfaceWidth / 2) - (m_offsetX * displayAspectRatio);
actualY += (surfaceHeight / 2) - (m_offsetY * displayAspectRatio);
selectedGuid = new ManagedPGRGuid();
foreach (NodeSurface currentNodeSurface in m_nodeSurfaces)
{
int xPos, yPos;
currentNodeSurface.GetPosition(out xPos, out yPos);
int roundedRectangleMargin = currentNodeSurface.GetRoundedRectangleMargin();
ManagedPGRGuid currGuid = currentNodeSurface.GetGuid();
if (actualX >= xPos + roundedRectangleMargin &&
actualX <= xPos + surfaceWidth - roundedRectangleMargin &&
actualY >= yPos + roundedRectangleMargin &&
actualY <= yPos + surfaceHeight - roundedRectangleMargin &&
IsGuidValid(currGuid) == true)
{
// Store the guid so we can draw something around
// the current selection
selectedGuid = currGuid;
return(true);
}
}
return(false);
}
private int ParseNode(ManagedTopologyNode node, int width, int height, int horzOffset, int vertOffset)
{
// To improve the layout of the tree, the allocation of width is
// determined by the number of second generation children rather than
// just immediate children.
int num2ndGenChildren = CountNum2ndGenChildren(node);
int widthUnit;
if (num2ndGenChildren == 0)
{
widthUnit = width;
}
else
{
widthUnit = width / num2ndGenChildren;
}
int nextHorzOffset = horzOffset;
// Calculate the position of the node
int nodeXPos = horzOffset + (width / 2);
int nodeYPos = vertOffset + (height / 2);
// Add this node to the list of surfaces to be drawn
InsertNewNodeSurface(node, nodeXPos, nodeYPos);
// Figure out there are any children to be recursively drawn
int accumOverlap = 0;
uint childIndex = 0;
for (uint portIndex = 0; portIndex < node.GetNumPorts(); portIndex++)
{
ManagedTopologyNode.PortType currPort = node.GetPortType(portIndex);
if (currPort == ManagedTopologyNode.PortType.ConnectedToChild)
{
ManagedTopologyNode currChild = node.GetChild(childIndex);
int thisWidth = widthUnit * ((int)currChild.GetNumChildren());
if (thisWidth == 0)
{
thisWidth = widthUnit;
}
int thisCenterX = nextHorzOffset + (thisWidth / 2);
int thisCenterY = vertOffset + height + (height / 2);
int surfaceWidth, surfaceHeight;
NodeSurface.GetDimensions(out surfaceWidth, out surfaceHeight);
// There might be more than 1 child, so perform some
// calculations so that the lines don't start from
// the same point
int numChildren = (int)node.GetNumChildren();
int startX = unchecked ((int)(nodeXPos + ((surfaceWidth / (numChildren + 1)) * (childIndex + 1)) - (surfaceWidth / 2)));
int startY = nodeYPos + (surfaceHeight / 2);
int endX = thisCenterX;
int endY = thisCenterY - (surfaceHeight / 2);
// Start a line to be drawn later
Line newLine = new Line(startX, startY, endX, endY);
m_lines.Add(newLine);
ManagedTopologyNode nextChild = node.GetChild(childIndex++);
accumOverlap += ParseNode(
nextChild,
thisWidth,
height,
nextHorzOffset,
vertOffset + height);
nextHorzOffset += thisWidth;
}
}
int nodeWidth, nodeHeight;
NodeSurface.GetDimensions(out nodeWidth, out nodeHeight);
if (width < nodeWidth)
{
accumOverlap += nodeWidth - width;
}
if (m_usedWidth < (horzOffset + width))
{
accumOverlap += (horzOffset + width) - m_usedWidth;
}
return(accumOverlap);
}