001/*
002 * Sonar, open source software quality management tool.
003 * Copyright (C) 2008-2012 SonarSource
004 * mailto:contact AT sonarsource DOT com
005 *
006 * Sonar is free software; you can redistribute it and/or
007 * modify it under the terms of the GNU Lesser General Public
008 * License as published by the Free Software Foundation; either
009 * version 3 of the License, or (at your option) any later version.
010 *
011 * Sonar is distributed in the hope that it will be useful,
012 * but WITHOUT ANY WARRANTY; without even the implied warranty of
013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014 * Lesser General Public License for more details.
015 *
016 * You should have received a copy of the GNU Lesser General Public
017 * License along with Sonar; if not, write to the Free Software
018 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
019 */
020package org.sonar.server.charts.deprecated;
021
022import org.jfree.chart.JFreeChart;
023import org.jfree.chart.axis.DateAxis;
024import org.jfree.chart.axis.DateTickUnit;
025import org.jfree.chart.axis.NumberAxis;
026import org.jfree.chart.plot.XYPlot;
027import org.jfree.chart.renderer.xy.StandardXYItemRenderer;
028import org.jfree.chart.title.TextTitle;
029import org.jfree.data.xy.XYSeries;
030import org.jfree.data.xy.XYSeriesCollection;
031import org.jfree.ui.RectangleInsets;
032
033import java.awt.image.BufferedImage;
034import java.io.IOException;
035import java.util.Map;
036import java.util.StringTokenizer;
037
038public class SparkLinesChart extends BaseChartWeb implements DeprecatedChart {
039
040  private XYSeriesCollection dataset = null;
041  private DateAxis x = null;
042  private NumberAxis y = null;
043  private StandardXYItemRenderer renderer = null;
044
045  public SparkLinesChart(Map<String, String> params) {
046    super(params);
047    jfreechart = new JFreeChart(null, TextTitle.DEFAULT_FONT, new XYPlot(), false);
048  }
049
050  @Override
051  protected BufferedImage getChartImage() throws IOException {
052    configure();
053    return getBufferedImage(jfreechart);
054  }
055
056  private void configure() {
057    configureChart(jfreechart, false);
058    configureXAxis();
059    configureYAxis();
060    configureRenderer();
061    configureDataset();
062    configurePlot();
063    applyParams();
064  }
065
066  private void configureRenderer() {
067    renderer = new StandardXYItemRenderer(StandardXYItemRenderer.LINES);
068  }
069
070  private void configureYAxis() {
071    y = new NumberAxis();
072    y.setTickLabelsVisible(false);
073    y.setTickMarksVisible(false);
074    y.setAxisLineVisible(false);
075    y.setNegativeArrowVisible(false);
076    y.setPositiveArrowVisible(false);
077    y.setVisible(false);
078  }
079
080  private void configureXAxis() {
081    x = new DateAxis();
082    x.setTickUnit(new DateTickUnit(DateTickUnit.MONTH, 1));
083    x.setTickLabelsVisible(false);
084    x.setTickMarksVisible(false);
085    x.setAxisLineVisible(false);
086    x.setNegativeArrowVisible(false);
087    x.setPositiveArrowVisible(false);
088    x.setVisible(false);
089  }
090
091  private void configureDataset() {
092    dataset = new XYSeriesCollection();
093  }
094
095  private void configurePlot() {
096    XYPlot plot = (XYPlot) jfreechart.getPlot();
097    plot.setInsets(RectangleInsets.ZERO_INSETS);
098    plot.setDataset(dataset);
099    plot.setDomainAxis(x);
100    plot.setDomainGridlinesVisible(false);
101    plot.setDomainCrosshairVisible(false);
102    plot.setRangeGridlinesVisible(false);
103    plot.setRangeCrosshairVisible(false);
104    plot.setRangeAxis(y);
105    plot.setRenderer(renderer);
106    plot.setBackgroundAlpha(0.0f);
107  }
108
109  private void applyParams() {
110    applyCommonParams();
111
112    configureColors(params.get(CHART_PARAM_COLORS), renderer);
113    addMeasures(params.get(CHART_PARAM_VALUES));
114
115    // -- Plot
116    XYPlot plot = (XYPlot) jfreechart.getPlot();
117    plot.setOutlineVisible(isParamValueValid(params.get(CHART_PARAM_OUTLINE_VISIBLE)) && Boolean.getBoolean(params.get(CHART_PARAM_OUTLINE_VISIBLE)));
118  }
119
120  private void addMeasures(String values) {
121    double min = Double.MAX_VALUE;
122    double max = Double.MIN_VALUE;
123    XYSeries series1 = new XYSeries("");
124    if (values != null && values.length() > 0) {
125      StringTokenizer st = new StringTokenizer(values, ",");
126      while (st.hasMoreTokens()) {
127        double vX = convertParamToDouble(st.nextToken());
128        double vY = 0.0;
129        if (st.hasMoreTokens()) {
130          vY = convertParamToDouble(st.nextToken());
131        }
132        series1.add(vX, vY);
133
134        min = (vY < min ? vY : min);
135        max = (vY > max ? vY : max);
136      }
137      dataset.addSeries(series1);
138      y.setRange(min-1, max+1);
139    }
140  }
141
142}