001 /*
002 * Sonar, open source software quality management tool.
003 * Copyright (C) 2009 SonarSource SA
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 */
020 package org.sonar.api.charts;
021
022 import org.jfree.chart.JFreeChart;
023 import org.jfree.chart.plot.CategoryPlot;
024 import org.jfree.chart.plot.Plot;
025 import org.jfree.chart.renderer.AbstractRenderer;
026 import org.jfree.chart.title.TextTitle;
027 import org.jfree.data.Values2D;
028
029 import java.awt.*;
030 import java.awt.image.BufferedImage;
031
032 /**
033 * @since 1.10
034 */
035 public abstract class AbstractChart implements Chart {
036
037 public static final int FONT_SIZE = 13;
038 public static final Color OUTLINE_COLOR = new Color(51, 51, 51);
039 public static final Color GRID_COLOR = new Color(204, 204, 204);
040 public static final Color[] COLORS = new Color[]{Color.decode("#4192D9"), Color.decode("#800000"), Color.decode("#A7B307"), Color.decode("#913C9F"), Color.decode("#329F4D")};
041
042
043 protected abstract Plot getPlot(ChartParameters params);
044
045 protected boolean hasLegend() {
046 return false;
047 }
048
049 public BufferedImage generateImage(ChartParameters params) {
050 JFreeChart chart = new JFreeChart(null, TextTitle.DEFAULT_FONT, getPlot(params), hasLegend());
051 improveChart(chart, params);
052 return chart.createBufferedImage(params.getWidth(), params.getHeight());
053 }
054
055 private void improveChart(JFreeChart jfrechart, ChartParameters params) {
056 Color background = Color.decode("#" + params.getValue(ChartParameters.PARAM_BACKGROUND_COLOR, "FFFFFF", false));
057 jfrechart.setBackgroundPaint(background);
058
059 jfrechart.setBorderVisible(false);
060 jfrechart.setAntiAlias(true);
061 jfrechart.setTextAntiAlias(true);
062 jfrechart.removeLegend();
063 }
064
065 @Override
066 public String toString() {
067 return getKey();
068 }
069
070
071 /**
072 * Helper to set color of series. If the parameter colorsHex is null, then default Sonar colors are used.
073 */
074 protected void configureColors(Values2D dataset, CategoryPlot plot, String[] colorsHex) {
075 Color[] colors = COLORS;
076 if (colorsHex != null && colorsHex.length > 0) {
077 colors = new Color[colorsHex.length];
078 for (int i = 0; i < colorsHex.length; i++) {
079 colors[i] = Color.decode("#" + colorsHex[i]);
080 }
081 }
082
083 dataset.getColumnCount();
084 AbstractRenderer renderer = (AbstractRenderer) plot.getRenderer();
085 for (int i = 0; i < dataset.getColumnCount(); i++) {
086 renderer.setSeriesPaint(i, colors[i % colors.length]);
087
088 }
089 }
090 }