/**
* Lays out the ribbons in a bundled style. Basically, this means doing a series of phased
* depth-first traversals on each of the top-level category nodes.
*
* @param minX The left bound of the display space.
* @param maxX The right bound of the display space.
*/
public void doLayoutBundled(int minX, int maxX, BarState currentState) {
root.setWidth(maxX - minX);
// Set all the layout and completeness flags to false.
resetForBundling(root);
// If there are no connections, return.
if (!root.getChildren().isEmpty()) {
// While the root is not set to complete...
while (!root.isComplete()) {
// Iterate through each of the invisible nodes, each of
// which represents a top-level category bar. At each
// step, lay out the leftmost incomplete branch of the
// top-level node.
for (VisualConnection invisible : root.getChildren()) {
if (!invisible.isComplete()) layoutBranch(invisible, currentState, (maxX - minX));
// If this node is complete and is the last of the root's
// children, then we're done.
else if (invisible == root.getChildren().get(root.getChildren().size() - 1))
root.setComplete(true);
}
}
}
setColors(root);
}
/**
* Lay out the leftmost incomplete branch of this connection node.
*
* @param connectionNode
*/
public boolean layoutBranch(
VisualConnection connectionNode, BarState currentState, int totalWidth) {
// If this node isn't laid out already, lay it out.
if (!connectionNode.isLaidOut()) {
connectionNode.layout(connectionNode.getParent().getWidth());
connectionNode.setLaidOut(true);
// If this is a leaf, this node is completed.
if (connectionNode.getChildren().isEmpty()) {
connectionNode.setComplete(true);
return true;
}
}
// If this is not a leaf, call layoutBranch on this node's
// leftmost incomplete child.
for (VisualConnection child : connectionNode.getChildren())
if (!child.isComplete())
if (layoutBranch(child, currentState, totalWidth) == false) return false;
// If all of the children are complete, this node is
// completed.
connectionNode.setComplete(true);
return true;
}
