/*
Copyright 2008-2010 Gephi
Authors : Mathieu Bastian <mathieu.bastian@gephi.org>, Eduardo Ramos <eduramiba@gmail.com>
Website : http://www.gephi.org
This file is part of Gephi.
Gephi is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
Gephi is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with Gephi. If not, see <http://www.gnu.org/licenses/>.
*/
package org.gephi.visualization.apiimpl.contextmenuitems;
import java.awt.event.KeyEvent;
import javax.swing.Icon;
import org.gephi.graph.api.Node;
import org.gephi.graph.api.NodeData;
import org.gephi.visualization.spi.GraphContextMenuItem;
import org.openide.util.ImageUtilities;
import org.openide.util.NbBundle;
import org.openide.util.lookup.ServiceProvider;
/**
*
*/
@ServiceProvider(service = GraphContextMenuItem.class)
public class Expand extends BasicItem {
public void execute() {
try {
for (Node node : nodes) {
if (graph.getDescendantCount(node) > 0) {
expandPositioning(node);
graph.expand(node);
}
}
} catch (Exception e) {
e.printStackTrace();
graph.readUnlockAll();
}
}
private void expandPositioning(Node node) {
NodeData nodeData = node.getNodeData();
float centroidX = 0;
float centroidY = 0;
int len = 0;
Node[] children = graph.getChildren(node).toArray();
for (Node child : children) {
centroidX += child.getNodeData().x();
centroidY += child.getNodeData().y();
len++;
}
centroidX /= len;
centroidY /= len;
float diffX = nodeData.x() - centroidX;
float diffY = nodeData.y() - centroidY;
for (Node child : children) {
NodeData nd = child.getNodeData();
nd.setX(nd.x() + diffX);
nd.setY(nd.y() + diffY);
}
}
public String getName() {
return NbBundle.getMessage(Expand.class, "GraphContextMenu_Expand");
}
public boolean canExecute() {
for (Node n : nodes) {
if (graph.getDescendantCount(n)>0) {
return true;
}
}
return false;
}
public int getType() {
return 100;
}
public int getPosition() {
return 0;
}
public Icon getIcon() {
return ImageUtilities.loadImageIcon("org/gephi/visualization/api/resources/expand.png", false);
}
@Override
public Integer getMnemonicKey() {
return KeyEvent.VK_E;
}
}