/*******************************************************************************
* 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 org.thechiselgroup.choosel.protovis.client.PVFillPartitionLayout.PVRadialNode;
import org.thechiselgroup.choosel.protovis.client.jsutil.JsArgs;
import org.thechiselgroup.choosel.protovis.client.jsutil.JsBooleanFunction;
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/sunburst.html">Protovis sunburst
* example</a>.
*
* @author Lars Grammel
*/
public class SunburstExample extends ProtovisWidget implements ProtovisExample {
@Override
public Widget asWidget() {
return this;
}
private void createVisualization(FlareData.Unit root) {
PVPanel vis = getPVPanel().width(900).height(900).bottom(-80);
final PVOrdinalScale category19 = PV.Colors.category19();
PVFillPartitionLayout partition = vis
.add(PV.Layout.PartitionFill())
.nodes(PVDom.create(root, new FlareData.UnitDomAdapter())
.nodes()).size(new JsDoubleFunction() {
public double f(JsArgs args) {
PVDomNode d = args.getObject();
return d.nodeValueDouble();
}
}).order("descending").orient("radial");
partition.node().add(PV.Wedge).fillStyle(new JsFunction<PVColor>() {
public PVColor f(JsArgs args) {
PVDomNode d = args.getObject();
if (d.parentNode() == null) {
return category19.fcolor((String) null);
}
return category19.fcolor(d.parentNode().nodeName());
}
}).strokeStyle("#fff").lineWidth(.5);
partition.label().add(PV.Label).visible(new JsBooleanFunction() {
public boolean f(JsArgs args) {
PVRadialNode d = args.getObject();
return d.angle() * d.outerRadius() >= 6;
}
});
}
@Override
public String getDescription() {
return null;
}
public String getProtovisExampleURL() {
return "http://vis.stanford.edu/protovis/ex/sunburst.html";
}
public String getSourceCodeFile() {
return "SunburstExample.java";
}
protected void onAttach() {
super.onAttach();
initPVPanel();
createVisualization(FlareData.data());
getPVPanel().render();
}
public String toString() {
return "Sunbursts";
}
}