/*******************************************************************************
* Copyright 2009, 2010 Lars Grammel
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*******************************************************************************/
package org.thechiselgroup.choosel.protovis.client;
import java.util.Comparator;
import org.thechiselgroup.choosel.protovis.client.MiserablesData.NovelCharacter;
import org.thechiselgroup.choosel.protovis.client.MiserablesData.NovelCharacterNodeAdapter;
import org.thechiselgroup.choosel.protovis.client.jsutil.JsArgs;
import org.thechiselgroup.choosel.protovis.client.jsutil.JsDoubleFunction;
import org.thechiselgroup.choosel.protovis.client.jsutil.JsFunction;
import com.google.gwt.user.client.ui.Widget;
/**
* Protovis/GWT implementation of <a
* href="http://vis.stanford.edu/protovis/ex/arc.html">Protovis arc diagram
* example</a>.
*
* @author Lars Grammel
*/
public class ArcDiagramExample extends ProtovisWidget implements
ProtovisExample {
@Override
public Widget asWidget() {
return this;
}
private void createVisualization(NovelCharacter[] nodes, Link[] links) {
PVPanel vis = getPVPanel().width(880).height(310).bottom(90);
PVArcLayout arc = vis.add(PV.Layout.Arc())
.nodes(new NovelCharacterNodeAdapter(), nodes).links(links)
.sort(new Comparator<PVNode>() {
public int compare(PVNode a, PVNode b) {
NovelCharacter ac = a.object();
NovelCharacter bc = b.object();
return ac.getGroup() == bc.getGroup() ? b.linkDegree()
- a.linkDegree() : bc.getGroup()
- ac.getGroup();
}
});
arc.link().add(PV.Line);
arc.node().add(PV.Dot).size(new JsDoubleFunction() {
public double f(JsArgs args) {
PVNode d = args.getObject();
return d.linkDegree() + 4;
}
}).fillStyle(new JsFunction<PVColor>() {
private PVOrdinalScale category19 = PV.Colors.category19();
public PVColor f(JsArgs args) {
PVNode d = args.getObject();
return category19
.fcolor(d.<NovelCharacter> object().getGroup());
}
}).strokeStyle(new JsFunction<PVColor>() {
public PVColor f(JsArgs args) {
PVDot _this = args.getThis();
return _this.fillStyle().darker();
}
});
arc.label().add(PV.Label);
}
@Override
public String getDescription() {
return null;
}
public String getProtovisExampleURL() {
return "http://vis.stanford.edu/protovis/ex/arc.html";
}
public String getSourceCodeFile() {
return "ArcDiagramExample.java";
}
protected void onAttach() {
super.onAttach();
initPVPanel();
createVisualization(MiserablesData.CHARACTERS, MiserablesData.LINKS);
getPVPanel().render();
}
public String toString() {
return "Arc Diagram";
}
}