Java tutorial
/* * Copyright (c) 2013 The Johns Hopkins University/Applied Physics Laboratory * All rights reserved. * * This material may be used, modified, or reproduced by or for the U.S. * Government pursuant to the rights granted under the clauses at * DFARS 252.227-7013/7014 or FAR 52.227-14. * * 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 * * NO WARRANTY. THIS MATERIAL IS PROVIDED "AS IS." JHU/APL DISCLAIMS ALL * WARRANTIES IN THE MATERIAL, WHETHER EXPRESS OR IMPLIED, INCLUDING (BUT NOT * LIMITED TO) ANY AND ALL IMPLIED WARRANTIES OF PERFORMANCE, * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT OF * INTELLECTUAL PROPERTY RIGHTS. ANY USER OF THE MATERIAL ASSUMES THE ENTIRE * RISK AND LIABILITY FOR USING THE MATERIAL. IN NO EVENT SHALL JHU/APL BE * LIABLE TO ANY USER OF THE MATERIAL FOR ANY ACTUAL, INDIRECT, * CONSEQUENTIAL, SPECIAL OR OTHER DAMAGES ARISING FROM THE USE OF, OR * INABILITY TO USE, THE MATERIAL, INCLUDING, BUT NOT LIMITED TO, ANY DAMAGES * FOR LOST PROFITS. */ package edu.jhuapl.graphs.jfreechart; import edu.jhuapl.graphs.DataSeriesInterface; import edu.jhuapl.graphs.GraphException; import edu.jhuapl.graphs.GraphSource; import edu.jhuapl.graphs.PointInterface; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.AxisLocation; import org.jfree.chart.axis.CategoryAxis; import org.jfree.chart.axis.NumberAxis; import org.jfree.chart.axis.ValueAxis; import org.jfree.chart.block.BlockBorder; import org.jfree.chart.block.BlockContainer; import org.jfree.chart.block.BorderArrangement; import org.jfree.chart.plot.CategoryPlot; import org.jfree.chart.title.LegendTitle; import org.jfree.chart.title.TextTitle; import org.jfree.data.category.CategoryDataset; import org.jfree.data.category.DefaultCategoryDataset; import org.jfree.ui.HorizontalAlignment; import org.jfree.ui.RectangleEdge; import org.jfree.ui.RectangleInsets; import java.awt.*; import java.util.HashSet; import java.util.Set; public abstract class JFreeChartCategoryGraphSource extends JFreeChartBaseSource { public static final String DOMAIN_AXIS = "DomainAxis"; public static final String RANGE_AXIS = "RangeAxis"; protected static final String DEFAULT_DOMAIN_LABEL = "Category"; protected static final String DEFAULT_RANGE_LABEL = "Value"; protected abstract JFreeChart createChart(String title, String xLabel, String yLabel, CategoryDataset dataset, boolean legend, boolean graphToolTip) throws GraphException; @Override public void initialize() throws GraphException { String title = getParam(GraphSource.GRAPH_TITLE, String.class, DEFAULT_TITLE); String xLabel = getParam(GraphSource.GRAPH_X_LABEL, String.class, DEFAULT_DOMAIN_LABEL); String yLabel = getParam(GraphSource.GRAPH_Y_LABEL, String.class, DEFAULT_RANGE_LABEL); CategoryDataset dataset = makeDataSet(); chart = createChart(title, xLabel, yLabel, dataset, false, false); // start customizing the graph Paint backgroundColor = getParam(GraphSource.BACKGROUND_COLOR, Paint.class, DEFAULT_BACKGROUND_COLOR); Paint plotColor = getParam(JFreeChartTimeSeriesGraphSource.PLOT_COLOR, Paint.class, backgroundColor); Double offset = getParam(GraphSource.AXIS_OFFSET, Double.class, DEFAULT_AXIS_OFFSET); Paint graphDomainGridlinePaint = getParam(GraphSource.GRAPH_DOMAIN_GRIDLINE_PAINT, Paint.class, backgroundColor); Paint graphRangeGridlinePaint = getParam(GraphSource.GRAPH_RANGE_GRIDLINE_PAINT, Paint.class, backgroundColor); boolean graphBorder = getParam(GraphSource.GRAPH_BORDER, Boolean.class, DEFAULT_GRAPH_BORDER); chart.setBackgroundPaint(backgroundColor); CategoryPlot plot = chart.getCategoryPlot(); plot.setBackgroundPaint(plotColor); plot.setAxisOffset(new RectangleInsets(offset, offset, offset, offset)); plot.setDomainGridlinePaint(graphDomainGridlinePaint); plot.setDomainGridlinesVisible(true); plot.setRangeGridlinePaint(graphRangeGridlinePaint); plot.setOutlineVisible(graphBorder); // set the axis location AxisLocation axisLocation = getParam(GraphSource.GRAPH_RANGE_AXIS_LOCATION, AxisLocation.class, AxisLocation.TOP_OR_LEFT); plot.setRangeAxisLocation(axisLocation); // customize the y-axis if (params.get(RANGE_AXIS) instanceof ValueAxis) { ValueAxis valueAxis = (ValueAxis) params.get(RANGE_AXIS); plot.setRangeAxis(valueAxis); } ValueAxis valueAxis = plot.getRangeAxis(); Object yAxisFont = params.get(GraphSource.GRAPH_Y_AXIS_FONT); Object yAxisLabelFont = params.get(GraphSource.GRAPH_Y_AXIS_LABEL_FONT); Double rangeLowerBound = getParam(GraphSource.GRAPH_RANGE_LOWER_BOUND, Double.class, null); Double rangeUpperBound = getParam(GraphSource.GRAPH_RANGE_UPPER_BOUND, Double.class, null); boolean graphRangeIntegerTick = getParam(GraphSource.GRAPH_RANGE_INTEGER_TICK, Boolean.class, false); boolean graphRangeMinorTickVisible = getParam(GraphSource.GRAPH_RANGE_MINOR_TICK_VISIBLE, Boolean.class, true); if (yAxisFont instanceof Font) { valueAxis.setTickLabelFont((Font) yAxisFont); } if (yAxisLabelFont instanceof Font) { valueAxis.setLabelFont((Font) yAxisLabelFont); } if (rangeLowerBound != null) { valueAxis.setLowerBound(rangeLowerBound); } if (rangeUpperBound != null) { valueAxis.setUpperBound(rangeUpperBound); } if (graphRangeIntegerTick) { valueAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits()); } valueAxis.setMinorTickMarksVisible(graphRangeMinorTickVisible); // customize the x-axis if (params.get(DOMAIN_AXIS) instanceof CategoryAxis) { CategoryAxis domainAxis = (CategoryAxis) params.get(DOMAIN_AXIS); plot.setDomainAxis(domainAxis); } CategoryAxis domainAxis = plot.getDomainAxis(); Object xAxisFont = params.get(GraphSource.GRAPH_X_AXIS_FONT); Object xAxisLabelFont = params.get(GraphSource.GRAPH_X_AXIS_LABEL_FONT); if (xAxisFont instanceof Font) { domainAxis.setTickLabelFont((Font) xAxisFont); } if (xAxisLabelFont instanceof Font) { domainAxis.setLabelFont((Font) xAxisLabelFont); } domainAxis.setLabel(xLabel); domainAxis.setLowerMargin(0.0); domainAxis.setUpperMargin(0.0); plot.setDomainAxis(domainAxis); // change the font of the graph title Font titleFont = getParam(GraphSource.GRAPH_FONT, Font.class, DEFAULT_GRAPH_TITLE_FONT); TextTitle textTitle = new TextTitle(); textTitle.setText(title); textTitle.setFont(titleFont); chart.setTitle(textTitle); // makes a wrapper for the legend to remove the border around it boolean legend = getParam(GraphSource.GRAPH_LEGEND, Boolean.class, DEFAULT_GRAPH_LEGEND); boolean legendBorder = getParam(GraphSource.LEGEND_BORDER, Boolean.class, DEFAULT_LEGEND_BORDER); Object legendFont = params.get(GraphSource.LEGEND_FONT); if (legend) { LegendTitle legendTitle = new LegendTitle(chart.getPlot()); BlockContainer wrapper = new BlockContainer(new BorderArrangement()); if (legendBorder) { wrapper.setFrame(new BlockBorder(1, 1, 1, 1)); } else { wrapper.setFrame(new BlockBorder(0, 0, 0, 0)); } BlockContainer items = legendTitle.getItemContainer(); items.setPadding(2, 10, 5, 2); wrapper.add(items); legendTitle.setWrapper(wrapper); legendTitle.setPosition(RectangleEdge.BOTTOM); legendTitle.setHorizontalAlignment(HorizontalAlignment.CENTER); if (legendFont instanceof Font) { legendTitle.setItemFont((Font) legendFont); } chart.addSubtitle(legendTitle); } this.initialized = true; } @SuppressWarnings("unchecked") protected CategoryDataset makeDataSet() throws GraphException { DefaultCategoryDataset dataset = new DefaultCategoryDataset(); int count = 0; // first, a pre-processing pass to determine the names of each dataset for (DataSeriesInterface series : data) { String seriesName = getParam(series.getMetadata(), GraphSource.SERIES_TITLE, String.class, "series" + (count + 1)); Set<Object> descs = new HashSet<Object>(series.getPoints().size()); for (PointInterface point : series.getPoints()) { if (!descs.contains(point.getDescriminator())) { descs.add(point.getDescriminator()); if (point.getDescriminator() instanceof Comparable) { dataset.addValue(point.getValue(), seriesName, (Comparable) point.getDescriminator()); } else { throw new GraphException( "Descrminator " + point.getDescriminator() + " not instanceof Comparable"); } } else { throw new GraphException("Multiple points in series \"" + seriesName + "\" have the descriminator " + point.getDescriminator()); } } count += 1; } return dataset; } }