BIRT is an open source, Eclipse-based reporting system that integrates with your application to produce compelling reports for both web and PDF.
Project homepage:
http://www.eclipse.org/birt/phoenix/
Programming language(s): Java,XML
License: gpl2
Some source files from: BIRT/source/org.eclipse.birt.chart.ui.prototype/src/org/eclipse/birt/chart/ui/swt/format/chart
ChartLegendSheetImpl.java
ChartPlotSheetImpl.java
ChartSheetImpl.java
See more files for this project here