/**
* Adds layout options to the elements of the given parent node.
*
* @param parentNode parent node representing a graph
*/
private static void addLayoutOptions(final KNode parentNode) {
// add options for the parent node
KShapeLayout parentLayout = parentNode.getData(KShapeLayout.class);
// set layout direction to horizontal
parentLayout.setProperty(LayoutOptions.DIRECTION, Direction.RIGHT);
// add options for the child nodes
for (KNode childNode : parentNode.getChildren()) {
KShapeLayout childLayout = childNode.getData(KShapeLayout.class);
// set some width and height for the child
childLayout.setWidth(30.0f);
childLayout.setHeight(30.0f);
// set fixed size for the child
// childLayout.setProperty(LayoutOptions.FIXED_SIZE, Boolean.TRUE);
// set port constraints to fixed port positions
childLayout.setProperty(LayoutOptions.PORT_CONSTRAINTS, PortConstraints.FIXED_POS);
// add options for the ports
int i = 0;
for (KPort port : childNode.getPorts()) {
i++;
KShapeLayout portLayout = port.getData(KShapeLayout.class);
// set position and side
portLayout.setYpos(i * 30.0f / (childNode.getPorts().size() + 1));
if (childNode.getLabels().get(0).getText().equals("node1")) {
portLayout.setXpos(30.0f);
portLayout.setProperty(LayoutOptions.PORT_SIDE, PortSide.EAST);
} else {
portLayout.setXpos(0.0f);
portLayout.setProperty(LayoutOptions.PORT_SIDE, PortSide.WEST);
}
}
}
}
/**
* Creates a KGraph, represented by a parent node that contains the actual nodes and edges of the
* graph.
*
* @return a parent node that contains graph elements
*/
private static KNode createGraph() {
// create parent node
KNode parentNode = KimlUtil.createInitializedNode();
// create child nodes
KNode childNode1 = KimlUtil.createInitializedNode();
// This automatically adds the child to the list of its parent's children.
childNode1.setParent(parentNode);
KLabel nodeLabel1 = KimlUtil.createInitializedLabel(childNode1);
nodeLabel1.setText("node1");
KNode childNode2 = KimlUtil.createInitializedNode();
childNode2.setParent(parentNode);
KLabel nodeLabel2 = KimlUtil.createInitializedLabel(childNode2);
nodeLabel2.setText("node2");
// create ports (optional)
KPort port1 = KimlUtil.createInitializedPort();
// This automatically adds the port to the node's list of ports.
port1.setNode(childNode1);
KPort port2 = KimlUtil.createInitializedPort();
port2.setNode(childNode2);
// create edges
KEdge edge1 = KimlUtil.createInitializedEdge();
// This automatically adds the edge to the node's list of outgoing edges.
edge1.setSource(childNode1);
// This automatically adds the edge to the node's list of incoming edges.
edge1.setTarget(childNode2);
// As our ports do not distinguish between incoming and outgoing edges,
// the edges must be added manually to their list of edges.
edge1.setSourcePort(port1);
port1.getEdges().add(edge1);
edge1.setTargetPort(port2);
port2.getEdges().add(edge1);
return parentNode;
}
/** {@inheritDoc} */
@Override
public void doLayout(final KNode layoutNode, final IKielerProgressMonitor progressMonitor) {
progressMonitor.begin("Fixed Layout", 1);
KShapeLayout parentLayout = layoutNode.getData(KShapeLayout.class);
EdgeRouting edgeRouting = parentLayout.getProperty(LayoutOptions.EDGE_ROUTING);
float maxx = 0, maxy = 0;
for (KNode node : layoutNode.getChildren()) {
KShapeLayout nodeLayout = node.getData(KShapeLayout.class);
// set the fixed position of the node, or leave it as it is
KVector pos = nodeLayout.getProperty(LayoutOptions.POSITION);
if (pos != null) {
nodeLayout.applyVector(pos);
// set the fixed size of the node
// TODO Think about whether this makes sense with the new size constraint options.
if (nodeLayout
.getProperty(LayoutOptions.SIZE_CONSTRAINT)
.contains(SizeConstraint.MINIMUM_SIZE)) {
float width = nodeLayout.getProperty(LayoutOptions.MIN_WIDTH);
float height = nodeLayout.getProperty(LayoutOptions.MIN_HEIGHT);
if (width > 0 && height > 0) {
KimlUtil.resizeNode(node, width, height, true, true);
}
}
}
maxx = Math.max(maxx, nodeLayout.getXpos() + nodeLayout.getWidth());
maxy = Math.max(maxy, nodeLayout.getYpos() + nodeLayout.getHeight());
// set the fixed position of the node labels, or leave them as they are
for (KLabel label : node.getLabels()) {
KShapeLayout labelLayout = label.getData(KShapeLayout.class);
pos = labelLayout.getProperty(LayoutOptions.POSITION);
if (pos != null) {
labelLayout.applyVector(pos);
}
maxx =
Math.max(maxx, nodeLayout.getXpos() + labelLayout.getXpos() + labelLayout.getWidth());
maxy =
Math.max(maxy, nodeLayout.getYpos() + labelLayout.getYpos() + labelLayout.getHeight());
}
// set the fixed position of the ports, or leave them as they are
for (KPort port : node.getPorts()) {
KShapeLayout portLayout = port.getData(KShapeLayout.class);
pos = portLayout.getProperty(LayoutOptions.POSITION);
if (pos != null) {
portLayout.applyVector(pos);
}
float portx = nodeLayout.getXpos() + portLayout.getXpos();
float porty = nodeLayout.getYpos() + portLayout.getYpos();
maxx = Math.max(maxx, portx + portLayout.getWidth());
maxy = Math.max(maxy, porty + portLayout.getHeight());
// set the fixed position of the port labels, or leave them as they are
for (KLabel label : port.getLabels()) {
KShapeLayout labelLayout = label.getData(KShapeLayout.class);
pos = labelLayout.getProperty(LayoutOptions.POSITION);
if (pos != null) {
labelLayout.applyVector(pos);
}
maxx = Math.max(maxx, portx + labelLayout.getXpos() + labelLayout.getWidth());
maxy = Math.max(maxy, porty + labelLayout.getYpos() + labelLayout.getHeight());
}
}
// set fixed routing for the connected edges, or leave them as they are
for (KEdge edge : node.getOutgoingEdges()) {
KVector maxv = processEdge(edge, edgeRouting);
maxx = Math.max(maxx, (float) maxv.x);
maxy = Math.max(maxy, (float) maxv.y);
}
for (KEdge edge : node.getIncomingEdges()) {
if (edge.getSource().getParent() != layoutNode) {
KVector maxv = processEdge(edge, edgeRouting);
maxx = Math.max(maxx, (float) maxv.x);
maxy = Math.max(maxy, (float) maxv.y);
}
}
}
// if orthogonal routing is selected, determine the junction points
if (edgeRouting == EdgeRouting.ORTHOGONAL) {
for (KNode node : layoutNode.getChildren()) {
for (KEdge edge : node.getOutgoingEdges()) {
generateJunctionPoints(edge);
}
}
}
// set size of the parent node
float borderSpacing = parentLayout.getProperty(LayoutOptions.BORDER_SPACING);
if (borderSpacing < 0) {
borderSpacing = DEF_BORDER_SPACING;
}
KInsets insets = parentLayout.getInsets();
float newWidth = maxx + borderSpacing + insets.getLeft() + insets.getRight();
float newHeight = maxy + borderSpacing + insets.getTop() + insets.getBottom();
KimlUtil.resizeNode(layoutNode, newWidth, newHeight, true, true);
progressMonitor.done();
}