public void ShowProgram(PsudoProgram prog)
{
this.program = prog;
this.drawingPanel.Roots.Clear();
this.drawingPanel.Controls.Clear();
FlowChartItemControl item = new FlowChartItemControl(program.MainMethod.Name);
item.IsStartEndProgram = true;
this.drawingPanel.Controls.Add(item);
CreateChildren(program.MainMethod.Instructions, item);
item.Location = new Point(500, 10);
Rectangle treeBounds = item.GetTreeBounds();
int newLeft = item.Left + treeBounds.Left * -1 + 20;
int newTop = item.Top + treeBounds.Top * -1 + 20;
item.Location = new Point(newLeft, newTop);
this.drawingPanel.Roots.Add(item);
this.drawingPanel.UpdateTreeBounds();
this.Invalidate();
item.DisableAutoPlacement();
}
private void AddToEndofChildren(FlowChartItemControl parent, FlowChartItemControl child)
{
while (parent.Children.Count > 0)
{
parent = parent.Children[0];
}
parent.AddChild(child);
}
private void DrawConnections(Graphics g, FlowChartItemControl parent)
{
Point parentCenter = new Point(parent.Left + parent.Width / 2,
parent.Bottom); //parent.Top + parent.Height / 2);
foreach (FlowChartItemControl child in parent.Children)
{
Point childTopCenter = new Point(child.Left + child.Width / 2, child.Top);
Point p1 = new Point(parentCenter.X, parentCenter.Y);
Point p2 = new Point(parentCenter.X, childTopCenter.Y - 14);
g.DrawLine(connPen, p1, p2);
p1 = new Point(childTopCenter.X, p2.Y);
g.DrawLine(connPen, p1, p2);
g.DrawLine(connPen, childTopCenter, p1);
g.FillPolygon(new SolidBrush(connPen.Color), new Point[] {
childTopCenter,
new Point(childTopCenter.X - 4, childTopCenter.Y - 8),
new Point(childTopCenter.X + 3, childTopCenter.Y - 8)
});
DrawConnections(g, child);
}
if (parent.LoopBack != null)
{
Point p1 = new Point();
Point p2 = new Point();
p1.X = parent.Left;
p1.Y = parent.Top + parent.Height / 2;
p2.X = Math.Min(parent.Left, parent.LoopBack.Left) - 14;
p2.Y = p1.Y;
g.DrawLine(connPen, p1, p2);
p1.X = p2.X;
p1.Y = parent.LoopBack.Top + parent.LoopBack.Height / 2;
g.DrawLine(connPen, p1, p2);
p2.Y = p1.Y;
p2.X = parent.LoopBack.Left;
g.DrawLine(connPen, p1, p2);
g.FillPolygon(new SolidBrush(connPen.Color), new Point[] {
p2,
new Point(p2.X - 8, p2.Y - 4),
new Point(p2.X - 8, p2.Y + 3)
});
}
}
public void AddChild(FlowChartItemControl item)
{
item.Parents.Add(this);
this.Children.Add(item);
item.ParentLocationChanged(this, EventArgs.Empty);
if (this.Children.Count > 1)
{
item.SiblingLocationChanged(this.Children[this.Children.Count - 2], EventArgs.Empty);
}
UpdateCellSize();
this.UpdateRequiredWidth();
DrawShape(Graphics.FromImage(drawBuffer));
}
protected void SiblingLocationChanged(object sender, EventArgs e)
{
if (!autoPlacementEnabled)
{
return;
}
FlowChartItemControl bro = ((FlowChartItemControl)sender);
this.Location = new Point(
bro.Right + (bro.requiredWidth - bro.Width) / 2 + CELL_SPACING,
bro.Top
);
}
private void CreateChildren(List <PsudoInstruction> instructions, FlowChartItemControl parent)
{
FlowChartItemControl tempParent = parent;
FlowChartItemControl item = null;
foreach (PsudoInstruction inst in instructions)
{
item = new FlowChartItemControl(inst);
this.drawingPanel.Controls.Add(item);
if (inst is BlockInstruction)
{
tempParent.AddChild(item);
CreateChildren(((BlockInstruction)inst).Instructions, item);
}
else if (inst is DecisionInstruction)
{
tempParent.AddChild(item);
DecisionInstruction decision = (DecisionInstruction)inst;
if (decision.FalseInstruction is BlockInstruction || decision.FalseInstruction is NoOpInstruction)
{
FlowChartItemControl trueBlock = new FlowChartItemControl("TRUE");
FlowChartItemControl falseBlock = new FlowChartItemControl("FALSE");
trueBlock.IsLabelNode = true;
falseBlock.IsLabelNode = true;
item.AddChild(trueBlock);
item.AddChild(falseBlock);
this.drawingPanel.Controls.Add(trueBlock);
this.drawingPanel.Controls.Add(falseBlock);
CreateChildren(decision.CodeBlock.Instructions, trueBlock);
if (decision.FalseInstruction is BlockInstruction)
{
CreateChildren(((BlockInstruction)decision.FalseInstruction).Instructions, falseBlock);
}
}
else
{
CreateChildren(decision.CodeBlock.Instructions, item);
while (decision.FalseInstruction is DecisionInstruction)
{
decision = (DecisionInstruction)decision.FalseInstruction;
CreateChildren(decision.CodeBlock.Instructions, item);
}
}
FlowChartItemControl end = new FlowChartItemControl("End");
this.drawingPanel.Controls.Add(end);
foreach (FlowChartItemControl child in item.Children)
{
AddToEndofChildren(child, end);
}
item = end;
}
else if (inst is DoLoopInstruction)
{
DoLoopInstruction loop = (DoLoopInstruction)inst;
FlowChartItemControl doNode = new FlowChartItemControl("DO");
this.drawingPanel.Controls.Add(doNode);
tempParent.AddChild(doNode);
CreateChildren(loop.Instructions, doNode);
AddToEndofChildren(tempParent, item);
item.LoopBack = doNode;
}
else if (inst is ForLoopInstruction)
{
ForLoopInstruction loop = (ForLoopInstruction)inst;
FlowChartItemControl initNode = new FlowChartItemControl(loop.InitInstruction);
this.drawingPanel.Controls.Add(initNode);
tempParent.AddChild(initNode);
initNode.AddChild(item);
CreateChildren(loop.Instructions, item);
FlowChartItemControl updateNode = new FlowChartItemControl(loop.UpdateInstruction);
this.drawingPanel.Controls.Add(updateNode);
AddToEndofChildren(item, updateNode);
updateNode.LoopBack = item;
}
else if (inst is WhileLoopInstruction)
{
tempParent.AddChild(item);
WhileLoopInstruction loop = (WhileLoopInstruction)inst;
CreateChildren(loop.Instructions, item);
FlowChartItemControl temp = item.Children[0];
while (temp.Children.Count > 0)
{
temp = temp.Children[0];
}
temp.LoopBack = item;
}
else
{
tempParent.AddChild(item);
}
tempParent = item;
}
}