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/****************************************************************
* Copyright (c) 2006-2013 IBM Corp.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM - initial API and implementation
*
****************************************************************
*/
package org.eclipse.linuxtools.systemtap.ui.graphingapi.ui.charts;
import org.eclipse.linuxtools.dataviewers.piechart.PieChart;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.linuxtools.systemtap.ui.graphingapi.nonui.adapters.IAdapter;
/**
* Builds Pie chart.
*/
public class PieChartBuilder extends AbstractChartWithoutAxisBuilder {
public static final String ID = "org.eclipse.linuxtools.systemtap.ui.graphingapi.ui.charts.piechartbuilder";
public PieChartBuilder(Composite parent, int style, String title,IAdapter adapter) {
super(adapter, parent, style, title);
}
@Override
protected void createChart() {
this.chart = new PieChart(this, getStyle());
}
@Override
protected void buildXSeries() {
Object data[][] = adapter.getData();
if (data == null || data.length == 0 || data[0].length == 0)
return;
int start = 0, len = Math.min(this.maxItems, data.length);
if (this.maxItems < data.length) {
start = data.length - this.maxItems;
}
double[][] values = new double[len][data[0].length-1];
String[] labels = new String[len];
for (int i = 0; i < labels.length; i++) {
if (data[i].length < 2)
return;
labels[i] = data[start + i][0].toString();
for (int j = 1; j < data[start + i].length; j++)
values[i][j-1] = getDoubleValue(data[start + i][j]);
}
((PieChart)this.chart).addPieChartSeries(labels, values);
chart.redraw();
}
@Override
public void updateDataSet() {
buildXSeries();
}
}
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