private void Drop (MouseEvent ev)
{
switch (state) {
case stateDrag:
state = stateIdle;
CheckResize ();
break;
case stateCreate:
CGNode node = new CGNode (ev.getX(), ev.getY(), "something",
getFontMetrics (getFont()),
!curnode.IsConcept());
curnode.AddChild (node, curarrow);
node.SetParent (curnode, curarrow);
ToBottom (curarrow);
Add (node);
if (!node.IsConcept()) {
int x = ev.getX() + node.Bbox().width + layoutXDist;
CGNode node2 = new CGNode (x, ev.getY(), "something",
getFontMetrics (getFont()),
true);
CGArrow arrow2 = new CGArrow (0, 0, 0, 0);
node.AddChild (node2, arrow2);
node2.SetParent (node, arrow2);
Add (node2);
Add (arrow2);
ToBottom (arrow2);
}
state = stateIdle;
NotifyViewers();
break;
}
ShowStatus (ev.getX(), ev.getY());
}
private void LayoutPass2 (CGNode root, int x, Vector vdist, int level)
{
Rectangle bbox = root.Bbox();
int width = ((Integer)vdist.elementAt(level)).intValue();
root.MoveTo (x + (width - bbox.width)/2, root.layout_y);
int nchilds = root.NumChilds();
for (int i = 0; i < nchilds; ++i) {
LayoutPass2 (root.ChildAt(i), x+width+layoutXDist, vdist, level+1);
}
}
public void Layout (CGNode root)
{
int x, y;
if (root == null) {
if ((root = topnode) == null)
return;
x = layoutXDist;
y = layoutYDist;
} else {
x = root.Bbox().x;
y = root.Bbox().y;
}
AutoUpdateOff ();
Vector vdist = new Vector();
LayoutPass1 (root, y, vdist, 0);
LayoutPass2 (root, x, vdist, 0);
CheckResize ();
AutoUpdateOn ();
}
private int LayoutPass1 (CGNode root, int y, Vector vdist, int level)
{
Rectangle bbox = root.Bbox();
root.layout_y = y;
root.SortChilds ();
if (level >= vdist.size()) {
vdist.addElement (new Integer (bbox.width));
} else {
int width = ((Integer)vdist.elementAt(level)).intValue();
if (width < bbox.width) {
vdist.setElementAt (new Integer (bbox.width), level);
}
}
int nchilds = root.NumChilds(), y2 = y;
for (int i = 0; i < nchilds; ++i) {
y2 = LayoutPass1 (root.ChildAt(i), y2, vdist, level+1);
}
return Math.max (y + bbox.height + layoutYDist, y2);
}