Java tutorial
/* * Copyright (c) 2012 Patrick Meyer * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package com.itemanalysis.jmetrik.graph.itemmap; import java.awt.*; import java.util.List; import com.itemanalysis.jmetrik.graph.histogram.HistogramChartDataset; import com.itemanalysis.jmetrik.swing.GraphPanel; import org.apache.log4j.Logger; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.NumberAxis; import org.jfree.chart.axis.ValueAxis; import org.jfree.chart.labels.StandardXYToolTipGenerator; import org.jfree.chart.plot.CombinedDomainXYPlot; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.plot.XYPlot; import org.jfree.chart.renderer.xy.XYBarRenderer; import org.jfree.chart.title.TextTitle; import org.jfree.chart.urls.StandardXYURLGenerator; import org.jfree.ui.RectangleInsets; public class ItemMapPanel extends GraphPanel { private ItemMapCommand command = null; private JFreeChart chart = null; static Logger logger = Logger.getLogger("jmetrik-logger"); public ItemMapPanel(ItemMapCommand command) { this.command = command; } public void setGraph() { HistogramChartDataset personDataset = null; HistogramChartDataset itemData = null; try { //get titles String chartTitle = command.getFreeOption("title").getString(); String chartSubtitle = command.getFreeOption("subtitle").getString(); PlotOrientation itemMapOrientation = PlotOrientation.HORIZONTAL; //create common x-axis NumberAxis domainAxis = new NumberAxis(); domainAxis.setLabel("Logits"); //create histogram personDataset = new HistogramChartDataset(); ValueAxis rangeAxis = new NumberAxis("Person Density"); if (itemMapOrientation == PlotOrientation.HORIZONTAL) rangeAxis.setInverted(true); XYBarRenderer renderer = new XYBarRenderer(); renderer.setBaseToolTipGenerator(new StandardXYToolTipGenerator()); renderer.setURLGenerator(new StandardXYURLGenerator()); renderer.setDrawBarOutline(true); renderer.setShadowVisible(false); XYPlot personPlot = new XYPlot(personDataset, null, rangeAxis, renderer); personPlot.setOrientation(PlotOrientation.HORIZONTAL); //create scatterplot of item difficulty itemData = new HistogramChartDataset(); NumberAxis itemRangeAxis = new NumberAxis("Item Frequency"); if (itemMapOrientation == PlotOrientation.VERTICAL) { itemRangeAxis.setInverted(true); } XYBarRenderer itemRenderer = new XYBarRenderer(); itemRenderer.setBaseToolTipGenerator(new StandardXYToolTipGenerator()); itemRenderer.setURLGenerator(new StandardXYURLGenerator()); itemRenderer.setDrawBarOutline(true); itemRenderer.setShadowVisible(false); XYPlot itemPlot = new XYPlot(itemData, null, itemRangeAxis, itemRenderer); itemPlot.setOrientation(PlotOrientation.HORIZONTAL); //combine the two charts CombinedDomainXYPlot cplot = new CombinedDomainXYPlot(domainAxis); cplot.add(personPlot, 3); cplot.add(itemPlot, 2); cplot.setGap(8.0); cplot.setDomainGridlinePaint(Color.white); cplot.setDomainGridlinesVisible(true); cplot.setOrientation(itemMapOrientation); // //next four lines are temp setting for book // //these four lines will create a histogram with white bars so it appears as just the bar outline // renderer.setBarPainter(new StandardXYBarPainter()); // renderer.setSeriesPaint(0, Color.white); // itemRenderer.setBarPainter(new StandardXYBarPainter()); // itemRenderer.setSeriesPaint(0, Color.white); chart = new JFreeChart(chartTitle, JFreeChart.DEFAULT_TITLE_FONT, cplot, false); chart.setBackgroundPaint(Color.white); if (chartSubtitle != null && !"".equals(chartSubtitle)) { chart.addSubtitle(new TextTitle(chartSubtitle)); } ChartPanel panel = new ChartPanel(chart); panel.getPopupMenu().addSeparator(); this.addJpgMenuItem(this, panel.getPopupMenu()); panel.setPreferredSize(new Dimension(width, height)); // //temp setting for book // this.addLocalEPSMenuItem(this, panel.getPopupMenu(), chart);//remove this line for public release versions chart.setPadding(new RectangleInsets(20.0, 5.0, 20.0, 5.0)); this.setBackground(Color.WHITE); this.add(panel); } catch (IllegalArgumentException ex) { logger.fatal(ex.getMessage(), ex); this.firePropertyChange("error", "", "Error - Check log for details."); } } public void updateItemDataSet(HistogramChartDataset data) { //set histogram data CombinedDomainXYPlot cplot = (CombinedDomainXYPlot) chart.getPlot(); List plots = cplot.getSubplots(); XYPlot p = (XYPlot) plots.get(1); if (data.getSeriesCount() > 1) p.setForegroundAlpha(0.70f); p.setDataset(1, data); } public void updatePersonDataset(HistogramChartDataset data) { //set histogram data CombinedDomainXYPlot cplot = (CombinedDomainXYPlot) chart.getPlot(); List plots = cplot.getSubplots(); XYPlot p = (XYPlot) plots.get(0); p.setDataset(0, data); } // /** // * This method uses the proprietary library EpsGraphics. It is only here // * for producing files for the jMetrik book. It will be disabled in // * public versions of the software. // * // * @param parent // * @param popMenu // * @param chart // */ // private void addLocalEPSMenuItem(final Component parent, JPopupMenu popMenu, final JFreeChart chart){ // JMenuItem mItem = new JMenuItem("Save as EPS..."); // mItem.addActionListener(new ActionListener() { // @Override // public void actionPerformed(ActionEvent e) { // JFileChooser chooser = new JFileChooser(); // FileFilter filter1 = new SimpleFilter("eps", "EPS File (*.eps)"); // chooser.addChoosableFileFilter(filter1); // int status = chooser.showSaveDialog(parent); // if(status == JFileChooser.APPROVE_OPTION){ // File f = chooser.getSelectedFile(); // String fileName = f.getAbsolutePath().toLowerCase(); // if(!fileName.endsWith("eps")) fileName += ".eps"; // // try{ // EpsGraphics2D g = new EpsGraphics2D(); // g.scale(1.0, 1.0);//72dpi // g.setColorDepth(EpsGraphics2D.GRAYSCALE); // chart.draw(g,new Rectangle(450, 400)); // Writer out=new FileWriter(new File(fileName)); // out.write(g.toString()); // out.close(); // }catch(IOException ex){ // ex.printStackTrace(); // } // } // // } // }); // popMenu.addArgument(mItem); // } }