Java tutorial
/* *********************************************************************** * Cyberoam iView - The Intelligent logging and reporting solution that * provides network visibility for security, regulatory compliance and * data confidentiality * Copyright (C ) 2009 Elitecore Technologies Ltd. * * 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/>. * * The interactive user interfaces in modified source and object code * versions of this program must display Appropriate Legal Notices, as * required under Section 5 of the GNU General Public License version 3. * * In accordance with Section 7(b) of the GNU General Public License * version 3, these Appropriate Legal Notices must retain the display of * the "Cyberoam Elitecore Technologies Initiative" logo. *************************************************************************/ package org.cyberoam.iview.charts; import java.awt.BasicStroke; import java.awt.Color; import java.awt.Font; import java.awt.GradientPaint; import java.awt.Point; import java.text.DecimalFormat; import javax.servlet.http.HttpServletRequest; import org.cyberoam.iview.audit.CyberoamLogger; import org.cyberoam.iview.beans.GraphBean; import org.cyberoam.iview.beans.ReportBean; import org.cyberoam.iview.beans.ReportColumnBean; import org.cyberoam.iviewdb.utility.ResultSetWrapper; import org.jfree.chart.JFreeChart; import org.jfree.chart.plot.dial.DialBackground; import org.jfree.chart.plot.dial.DialCap; import org.jfree.chart.plot.dial.DialPlot; import org.jfree.chart.plot.dial.DialPointer; import org.jfree.chart.plot.dial.DialValueIndicator; import org.jfree.chart.plot.dial.StandardDialFrame; import org.jfree.chart.plot.dial.StandardDialRange; import org.jfree.chart.plot.dial.StandardDialScale; import org.jfree.data.general.DefaultValueDataset; import org.jfree.ui.GradientPaintTransformType; import org.jfree.ui.StandardGradientPaintTransformer; import com.lowagie.text.Image; /** * This class represents Meter chart entity. * @author Vishal Vala * */ public class MeterChart { /** * This method generates JFreeChart instance for Meter chart with dial port and iView customization. * @param reportID * @param rsw * @param request * @return */ public static JFreeChart getChart(int reportID, ResultSetWrapper rsw, HttpServletRequest request) { ReportBean reportBean = ReportBean.getRecordbyPrimarykey(reportID); JFreeChart chart = null; ReportColumnBean reportColumnBean = null; GraphBean graphBean = null; try { DefaultValueDataset data = null; graphBean = GraphBean.getRecordbyPrimarykey(reportBean.getGraphId()); reportColumnBean = ReportColumnBean.getRecordByPrimaryKey(reportBean.getReportId(), graphBean.getYColumnId()); String yColumnDBname = reportColumnBean.getDbColumnName(); rsw.first(); double used = Double.parseDouble(rsw.getString(yColumnDBname)); data = new DefaultValueDataset(100 - used); DialPlot plot = new DialPlot(data); chart = new JFreeChart("", JFreeChart.DEFAULT_TITLE_FONT, plot, false); chart.setBackgroundPaint(Color.white); int imgWidth = graphBean.getWidth(); int imgHeight = graphBean.getHeight(); if (request != null && request.getParameter("imgwidth") != null && !"".equalsIgnoreCase(request.getParameter("imgwidth")) && !"null".equalsIgnoreCase(request.getParameter("imgwidth"))) { imgWidth = Integer.parseInt(request.getParameter("imgwidth")); } if (request != null && request.getParameter("imgheight") != null && !"".equalsIgnoreCase(request.getParameter("imgheight")) && !"null".equalsIgnoreCase(request.getParameter("imgheight"))) { imgHeight = Integer.parseInt(request.getParameter("imgheight")); } plot.setView((1 - ((double) imgWidth / (double) imgHeight)) / 2, plot.getViewY(), ((double) imgWidth / (double) imgHeight), plot.getViewHeight()); StandardDialFrame dialFrame = new StandardDialFrame(); dialFrame.setBackgroundPaint(new Color(54, 73, 109)); dialFrame.setRadius(0.8); dialFrame.setStroke(new BasicStroke(0)); plot.setDialFrame(dialFrame); GradientPaint gp = new GradientPaint(new Point(), new Color(255, 255, 255), new Point(), new Color(196, 210, 219)); DialBackground db = new DialBackground(gp); db.setGradientPaintTransformer( new StandardGradientPaintTransformer(GradientPaintTransformType.VERTICAL)); plot.setBackground(db); DialValueIndicator dvi = new DialValueIndicator(0); dvi.setRadius(0.55); dvi.setBackgroundPaint(gp); dvi.setNumberFormat(new DecimalFormat("###")); dvi.setFont(new Font("Vandara", Font.CENTER_BASELINE, 10)); dvi.setOutlinePaint(Color.lightGray); plot.addLayer(dvi); StandardDialScale scale = new StandardDialScale(0, 100, -120, -300, 10, 4); scale.setTickRadius(0.75); scale.setTickLabelOffset(0.15); scale.setTickLabelFont(new Font("Vandara", Font.CENTER_BASELINE, 9)); plot.addScale(0, scale); StandardDialRange range = new StandardDialRange(0.0, 50.0, Color.green); range.setInnerRadius(0.35); range.setOuterRadius(0.38); plot.addLayer(range); StandardDialRange range2 = new StandardDialRange(50.0, 75.0, Color.yellow); range2.setInnerRadius(0.35); range2.setOuterRadius(0.38); plot.addLayer(range2); StandardDialRange range3 = new StandardDialRange(75.0, 100.0, Color.red); range3.setInnerRadius(0.35); range3.setOuterRadius(0.38); plot.addLayer(range3); DialPointer needle = new DialPointer.Pointer(); needle.setRadius(0.55); plot.addLayer(needle); DialCap cap = new DialCap(); cap.setRadius(0.05); plot.setCap(cap); } catch (Exception e) { CyberoamLogger.appLog.debug("MeterChart=>Exception : " + e, e); } return chart; } }