private void drawingArea_MouseClick(object sender, MouseEventArgs e)
{
PointF dot = new PointF(e.Location.X, e.Location.Y);
dot = graphEditor.TranslateToLocal(dot, drawingArea.DisplayRectangle);
int?id = graphEditor.TryGetNode(dot, drawingArea.ClientRectangle);
switch (currentMode)
{
case Mode.AddMoveNode:
if (id != null)
{
return;
}
graphEditor.AddNode(dot.X, dot.Y);
drawingArea.Invalidate();
break;
case Mode.AddEdge:
if (id == null)
{
return;
}
if (lastClicked != null)
{
graphEditor.AddEdge((int)lastClicked, (int)id, (int)weightNumeric.Value);
graphEditor.AddEdge((int)id, (int)lastClicked, (int)weightNumeric.Value);
graphEditor.ChangeNodeColor((int)lastClicked, Color.White);
lastClicked = null;
drawingArea.Invalidate();
return;
}
graphEditor.ChangeNodeColor((int)id, Color.Yellow);
lastClicked = id;
drawingArea.Invalidate();
break;
case Mode.RemoveEdge:
if (id == null)
{
return;
}
if (lastClicked == null)
{
lastClicked = id;
graphEditor.ChangeNodeColor((int)id, Color.Red);
drawingArea.Invalidate();
return;
}
graphEditor.RemoveEdge((int)lastClicked, (int)id);
graphEditor.ChangeNodeColor((int)lastClicked, Color.White);
lastClicked = null;
drawingArea.Invalidate();
break;
}
}
