internal DEdge(DNode source, DNode target, DrawingEdge drawingEdgeParam, ConnectionToGraph connection,
GViewer gviewer) : base(gviewer) {
DrawingEdge = drawingEdgeParam;
Source = source;
Target = target;
if (connection == ConnectionToGraph.Connected) {
if (source == target)
source.AddSelfEdge(this);
else {
source.AddOutEdge(this);
target.AddInEdge(this);
}
}
if (drawingEdgeParam.Label != null)
Label = new DLabel(this, drawingEdge.Label, gviewer);
}
internal void AddNode(DNode dNode){
nodeMap[dNode.DrawingNode.Id] = dNode;
}
internal static DNode CreateDNodeAndSetNodeBoundaryCurve(Graph drawingGraph, DGraph dGraph, GeometryNode geomNode,
DrawingNode drawingNode, GViewer viewer){
double width = 0;
double height = 0;
var dNode = new DNode(drawingNode, viewer);
dGraph.AddNode(dNode);
Drawing.Label label = drawingNode.Label;
if (label != null){
CreateDLabel(dNode, label, out width, out height, viewer);
width += 2*dNode.DrawingNode.Attr.LabelMargin;
height += 2*dNode.DrawingNode.Attr.LabelMargin;
}
if (width < drawingGraph.Attr.MinNodeWidth)
width = drawingGraph.Attr.MinNodeWidth;
if (height < drawingGraph.Attr.MinNodeHeight)
height = drawingGraph.Attr.MinNodeHeight;
// Filippo Polo: I'm taking this out because I've modified the drawing of a double circle
// so that it can be used with ellipses too.
//if (drawingNode.Attr.Shape == Shape.DoubleCircle)
//width = height = Math.Max(width, height) * Draw.DoubleCircleOffsetRatio;
ICurve curve;
if (drawingNode.NodeBoundaryDelegate != null &&
(curve = drawingNode.NodeBoundaryDelegate(drawingNode)) != null)
geomNode.BoundaryCurve = curve;
else if (geomNode.BoundaryCurve == null)
geomNode.BoundaryCurve =
NodeBoundaryCurves.GetNodeBoundaryCurve(dNode.DrawingNode, width, height);
return dNode;
}
/// <summary>
/// creates DGraph from a precalculated drawing graph
/// </summary>
/// <param name="drawingGraph"></param>
/// <param name="viewer">the owning viewer</param>
/// <returns></returns>
internal static DGraph CreateDGraphFromPrecalculatedDrawingGraph(Graph drawingGraph, GViewer viewer){
var dGraph = new DGraph(drawingGraph, viewer);
//create dnodes and node boundary curves
if (drawingGraph.RootSubgraph != null)
foreach (DrawingNode drawingNode in drawingGraph.RootSubgraph.AllSubgraphsWidthFirstExcludingSelf())
{
var dNode = new DNode(drawingNode, viewer);
if (drawingNode.Label != null)
dNode.Label = new DLabel(dNode, drawingNode.Label, viewer);
dGraph.AddNode(dNode);
}
foreach (DrawingNode drawingNode in drawingGraph.Nodes){
var dNode = new DNode(drawingNode, viewer);
if (drawingNode.Label != null)
dNode.Label = new DLabel(dNode, drawingNode.Label, viewer);
dGraph.AddNode(dNode);
}
foreach (DrawingEdge drawingEdge in drawingGraph.Edges)
dGraph.AddEdge(new DEdge(dGraph.GetNode(drawingEdge.SourceNode), dGraph.GetNode(drawingEdge.TargetNode),
drawingEdge, ConnectionToGraph.Connected, viewer));
return dGraph;
}
internal void DrawNode(Graphics g, DNode dnode){
DrawingNode node = dnode.DrawingNode;
if(node.IsVisible==false)
return;
if (node.DrawNodeDelegate != null)
if (node.DrawNodeDelegate(node, g))
return; //the client draws instead
if (node.GeometryNode == null || node.GeometryNode.BoundaryCurve==null) //node comes with non-initilalized attribute - should not be drawn
return;
NodeAttr attr = node.Attr;
using (var pen = new Pen(dnode.Color, (float)attr.LineWidth)){
foreach (Style style in attr.Styles)
Draw.AddStyleForPen(dnode, pen, style);
switch (attr.Shape){
case Shape.DoubleCircle:
Draw.DrawDoubleCircle(g, pen, dnode);
break;
case Shape.Box:
Draw.DrawBox(g, pen, dnode);
break;
case Shape.Diamond:
Draw.DrawDiamond(g, pen, dnode);
break;
case Shape.Point:
Draw.DrawEllipse(g, pen, dnode);
break;
case Shape.Plaintext:{
break;
//do nothing
}
case Shape.Octagon:
case Shape.House:
case Shape.InvHouse:
case Shape.Ellipse:
case Shape.DrawFromGeometry:
#if DEBUG
case Shape.TestShape:
#endif
pen.EndCap = LineCap.Square;
Draw.DrawFromMsaglCurve(g, pen, dnode);
break;
default:
Draw.DrawEllipse(g, pen, dnode);
break;
}
}
Draw.DrawLabel(g, dnode.Label);
}
static BBNode BuildBBHierarchyUnderDNode(DNode dNode){
var bbNode = new BBNode();
bbNode.geometry = new Geometry(dNode);
bbNode.bBox = dNode.DrawingNode.BoundingBox;
return bbNode;
}
static IEnumerable<DEdge> Edges(DNode dNode)
{
foreach (DEdge de in dNode.OutEdges)
yield return de;
foreach (DEdge de in dNode.InEdges)
yield return de;
foreach (DEdge de in dNode.SelfEdges)
yield return de;
}
internal static void DrawEllipse(Graphics g, Pen pen, DNode dNode) {
var drNode = dNode.DrawingNode;
NodeAttr nodeAttr = drNode.Attr;
var width = (float)drNode.Width;
var height = (float)drNode.Height;
var x = (float)(drNode.Pos.X - width / 2.0);
var y = (float) (drNode.Pos.Y - height/2.0);
DrawEllipseOnPosition(dNode, nodeAttr, g, x, y, width, height, pen);
}
static void DrawEllipseOnPosition(DNode dNode, NodeAttr nodeAttr, Graphics g, float x, float y, float width,
float height, Pen pen){
if(NeedToFill(dNode.FillColor))
g.FillEllipse(new SolidBrush(dNode.FillColor), x, y, width, height);
if(nodeAttr.Shape == Shape.Point)
g.FillEllipse(new SolidBrush(pen.Color), x, y, width, height);
g.DrawEllipse(pen, x, y, width, height);
}
internal static void DrawDiamond(Graphics g, Pen pen, DNode dNode) {
var drNode = dNode.DrawingNode;
NodeAttr nodeAttr = drNode.Attr;
double w2 = drNode.Width/2.0f;
double h2 = drNode.Height/2.0f;
double cx = drNode.Pos.X;
double cy = drNode.Pos.Y;
var ps = new[]{
new PointF((float) cx - (float) w2, (float) cy),
new PointF((float) cx, (float) cy + (float) h2),
new PointF((float) cx + (float) w2, (float) cy),
new PointF((float) cx, (float) cy - (float) h2)
};
if(NeedToFill(dNode.FillColor)){
Color fc = FillColor(nodeAttr);
g.FillPolygon(new SolidBrush(fc), ps);
}
g.DrawPolygon(pen, ps);
}
internal static void DrawBox(Graphics g, Pen pen, DNode dNode) {
var drNode = dNode.DrawingNode;
NodeAttr nodeAttr = drNode.Attr;
if(nodeAttr.XRadius == 0 || nodeAttr.YRadius == 0){
double x = drNode.GeometryNode.Center.X - drNode.Width/2.0f;
double y = drNode.GeometryNode.Center.Y - drNode.Height / 2.0f;
if(NeedToFill(dNode.FillColor)){
Color fc = FillColor(nodeAttr);
g.FillRectangle(new SolidBrush(fc), (float) x, (float) y, (float) drNode.Width,
(float) drNode.Height);
}
g.DrawRectangle(pen, (float) x, (float) y, (float) drNode.Width, (float) drNode.Height);
} else{
var width = (float) drNode.Width;
var height = (float) drNode.Height;
var xRadius = (float) nodeAttr.XRadius;
var yRadius = (float) nodeAttr.YRadius;
using (var path = new GraphicsPath()){
FillTheGraphicsPath(drNode, width, height, ref xRadius, ref yRadius, path);
if(NeedToFill(dNode.FillColor)){
g.FillPath(new SolidBrush(dNode.FillColor), path);
}
g.DrawPath(pen, path);
}
}
}
internal static void DrawDoubleCircle(Graphics g, Pen pen, DNode dNode) {
var drNode = dNode.DrawingNode;
NodeAttr nodeAttr = drNode.Attr;
double x = drNode.GeometryNode.Center.X - drNode.GeometryNode.Width/2.0f;
double y = drNode.GeometryNode.Center.Y - drNode.GeometryNode.Height / 2.0f;
if(NeedToFill(dNode.FillColor)){
g.FillEllipse(new SolidBrush(dNode.FillColor), (float) x, (float) y, (float) drNode.Width,
(float) drNode.Height);
}
g.DrawEllipse(pen, (float) x, (float) y, (float) drNode.Width, (float) drNode.Height);
var w = (float) drNode.Width;
var h = (float) drNode.Height;
float m = Math.Max(w, h);
float coeff = (float) 1.0 - (float) (DoubleCircleOffsetRatio);
x += coeff*m/2.0;
y += coeff*m/2.0;
g.DrawEllipse(pen, (float) x, (float) y, w - coeff*m, h - coeff*m);
}
static void DrawCurve(DNode dNode, Curve c, Graphics g, Pen pen) {
var path = new GraphicsPath();
foreach (ICurve seg in c.Segments)
AddSegToPath(seg, ref path);
if (NeedToFill(dNode.FillColor))
g.FillPath(new SolidBrush(dNode.FillColor), path);
g.DrawPath(pen, path);
}
internal static void DrawFromMsaglCurve(Graphics g, Pen pen, DNode dNode){
var drNode = dNode.DrawingNode;
NodeAttr attr = dNode.DrawingNode.Attr;
var iCurve=drNode.GeometryNode.BoundaryCurve;
var c =iCurve as Curve;
if(c != null){
DrawCurve(dNode, c, g, pen);
} else{
var ellipse = iCurve as Ellipse;
if(ellipse != null){
double w = ellipse.AxisA.X;
double h = ellipse.AxisB.Y;
DrawEllipseOnPosition(dNode, dNode.DrawingNode.Attr, g, (float) (ellipse.Center.X - w),
(float) (ellipse.Center.Y - h),
(float) w*2, (float) h*2, pen);
} else {
var poly = iCurve as Polyline;
if (poly != null) {
var path = new GraphicsPath();
path.AddLines(poly.Select(p => new Point((int)p.X, (int)p.Y)).ToArray());
path.CloseAllFigures();
if (NeedToFill(dNode.FillColor))
g.FillPath(new SolidBrush(dNode.FillColor), path);
g.DrawPath(pen, path);
} else {
var roundedRect = iCurve as RoundedRect;
if (roundedRect != null)
DrawCurve(dNode, roundedRect.Curve, g, pen);
}
}
}
}
