/*
Copyright 2008-2011 Gephi
Authors : Mathieu Bastian <mathieu.bastian@gephi.org>
Website : http://www.gephi.org
This file is part of Gephi.
DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
Copyright 2011 Gephi Consortium. All rights reserved.
The contents of this file are subject to the terms of either the GNU
General Public License Version 3 only ("GPL") or the Common
Development and Distribution License("CDDL") (collectively, the
"License"). You may not use this file except in compliance with the
License. You can obtain a copy of the License at
http://gephi.org/about/legal/license-notice/
or /cddl-1.0.txt and /gpl-3.0.txt. See the License for the
specific language governing permissions and limitations under the
License. When distributing the software, include this License Header
Notice in each file and include the License files at
/cddl-1.0.txt and /gpl-3.0.txt. If applicable, add the following below the
License Header, with the fields enclosed by brackets [] replaced by
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If you wish your version of this file to be governed by only the CDDL
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"[Contributor] elects to include this software in this distribution
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Contributor(s):
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*/
package org.gephi.plugins.example.layout;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;
import java.util.List;
import org.gephi.data.attributes.api.AttributeColumn;
import org.gephi.graph.api.Graph;
import org.gephi.graph.api.GraphModel;
import org.gephi.graph.api.Node;
import org.gephi.layout.spi.Layout;
import org.gephi.layout.spi.LayoutBuilder;
import org.gephi.layout.spi.LayoutProperty;
import org.gephi.ui.propertyeditor.NodeColumnNumbersEditor;
/**
* Same example as the {@link GridLayout} but nodes can be sorted using an
* attribute column like degree.
* <p>
* It shows how {@link AttributeColumn} objects can also be used as properties.
*
* @author Mathieu Bastian
*/
public class SortedGridLayout implements Layout {
//Architecture
private final LayoutBuilder builder;
private GraphModel graphModel;
//Flags
private boolean executing = false;
//Properties
private AttributeColumn column;
private int areaSize;
private float speed;
public SortedGridLayout(SortedGridLayoutBuilder builder) {
this.builder = builder;
}
@Override
public void resetPropertiesValues() {
areaSize = 1000;
speed = 1f;
}
@Override
public void initAlgo() {
executing = true;
}
@Override
public void goAlgo() {
Graph graph = graphModel.getGraphVisible();
graph.readLock();
int nodeCount = graph.getNodeCount();
Node[] nodes = graph.getNodes().toArray();
if (column != null) {
Arrays.sort(nodes, new Comparator<Node>() {
@Override
public int compare(Node o1, Node o2) {
Number n1 = (Number) o1.getAttributes().getValue(column.getIndex());
Number n2 = (Number) o2.getAttributes().getValue(column.getIndex());
if (n1.doubleValue() < n2.doubleValue()) {
return 1;
} else if (n1.doubleValue() > n2.doubleValue()) {
return -1;
} else {
return 0;
}
}
});
}
int rows = (int) Math.round(Math.sqrt(nodeCount)) + 1;
int cols = (int) Math.round(Math.sqrt(nodeCount)) + 1;
for (int i = 0; i < rows; i++) {
for (int j = 0; j < cols && (i * rows + j) < nodes.length; j++) {
Node node = nodes[i * rows + j];
float x = (-areaSize / 2f) + ((float) j / cols) * areaSize;
float y = (areaSize / 2f) - ((float) i / rows) * areaSize;
float px = node.getNodeData().x();
float py = node.getNodeData().y();
node.getNodeData().setX(px + (x - px) * (speed / 10000f));
node.getNodeData().setY(py + (y - py) * (speed / 10000f));
}
}
graph.readUnlock();
}
@Override
public void endAlgo() {
executing = false;
}
@Override
public boolean canAlgo() {
return executing;
}
@Override
public LayoutProperty[] getProperties() {
List<LayoutProperty> properties = new ArrayList<LayoutProperty>();
final String GRIDLAYOUT = "Grid Layout";
try {
properties.add(LayoutProperty.createProperty(
this, AttributeColumn.class,
"Sorted By",
GRIDLAYOUT,
"The colums used to sort nodes",
"getColumn", "setColumn", NodeColumnNumbersEditor.class));
properties.add(LayoutProperty.createProperty(
this, Integer.class,
"Area size",
GRIDLAYOUT,
"The area size",
"getAreaSize", "setAreaSize"));
properties.add(LayoutProperty.createProperty(
this, Float.class,
"Speed",
GRIDLAYOUT,
"How fast are moving nodes",
"getSpeed", "setSpeed"));
} catch (Exception e) {
e.printStackTrace();
}
return properties.toArray(new LayoutProperty[0]);
}
@Override
public LayoutBuilder getBuilder() {
return builder;
}
@Override
public void setGraphModel(GraphModel gm) {
this.graphModel = gm;
}
public Float getSpeed() {
return speed;
}
public void setSpeed(Float speed) {
this.speed = speed;
}
public Integer getAreaSize() {
return areaSize;
}
public void setAreaSize(Integer area) {
this.areaSize = area;
}
public AttributeColumn getColumn() {
return column;
}
public void setColumn(AttributeColumn column) {
this.column = column;
}
}