Java tutorial
/* *------------------- * The StackedChart.java is part of ASH Viewer *------------------- * * ASH Viewer 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. * * ASH Viewer 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 ASH Viewer. If not, see <http://www.gnu.org/licenses/>. * * Copyright (c) 2009, Alex Kardapolov, All rights reserved. * */ package org.ash.gui; import java.awt.BasicStroke; import java.awt.Color; import java.awt.Font; import java.text.DateFormat; import java.text.DecimalFormat; import java.text.SimpleDateFormat; import java.util.Date; import org.ash.database.ASHDatabase; import org.ash.util.Options; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.DateAxis; import org.jfree.chart.block.BlockBorder; import org.jfree.chart.block.BlockContainer; import org.jfree.chart.block.BorderArrangement; import org.jfree.chart.labels.StandardXYToolTipGenerator; import org.jfree.chart.plot.Marker; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.plot.ValueMarker; import org.jfree.chart.plot.XYPlot; import org.jfree.chart.renderer.xy.StackedXYAreaRenderer3; import org.jfree.chart.title.LegendTitle; import org.jfree.data.xy.CategoryTableXYDataset; import org.jfree.ui.HorizontalAlignment; import org.jfree.ui.LengthAdjustmentType; import org.jfree.ui.RectangleAnchor; import org.jfree.ui.RectangleEdge; import org.jfree.ui.TextAnchor; import com.sleepycat.je.DatabaseException; /** * The Class StackedXYAreaChart. * */ public class StackedChart { /** The database. */ private ASHDatabase database; /** The dataset. */ private CategoryTableXYDataset dataset; /** The chart. */ private JFreeChart chart; /** The chart panel. */ private ChartPanel chartPanel; /** The date format. */ private DateFormat dateFormat = new SimpleDateFormat("dd.MM.yyyy"); /** The current date. */ private Date currentDate; /** The x axis. */ private DateAxis xAxis; /** The threshold max cpu. */ private ValueMarker thresholdMaxCpu; /** The max cpu. */ private double maxCpu; /** The plot. */ private XYPlot plot; /** The current end. */ private Marker currentEnd; /** The flag threshold begin time auto selection. */ private boolean flagThresholdBeginTimeAutoSelection = false; /** * Instantiates a new stacked xy area chart. * * @param database0 the database0 */ public StackedChart(ASHDatabase database0) { this.database = database0; } /** * Creates the chart panel. * * @return the chart panel * * @throws DatabaseException the database exception */ public ChartPanel createChartPanel() throws DatabaseException { createDataset(); JFreeChart chart = createChart(); chartPanel = new ChartPanel(chart); chartPanel.setRangeZoomable(false); return chartPanel; } /** * Update xaxis label. * * @param time the time */ public void updatexAxisLabel(double time) { if (!xAxis.getLabel().equalsIgnoreCase(dateFormat.format(time))) { xAxis.setLabel(dateFormat.format(time)); } } /** * Sets the threshold max cpu. * * @param maxCpu the new threshold max cpu */ public void setThresholdMaxCpu(double maxCpu) { this.maxCpu = maxCpu; } /** * Sets the flag threshold begin time auto selection. * * @param flag0 the new flag threshold begin time auto selection */ public void setFlagThresholdBeginTimeAutoSelection(boolean flag0) { this.flagThresholdBeginTimeAutoSelection = flag0; } /** * Checks if is flag threshold begin time auto selection. * * @return true, if is flag threshold begin time auto selection */ public boolean isFlagThresholdBeginTimeAutoSelection() { return this.flagThresholdBeginTimeAutoSelection; } /** * Sets the threshold begin time auto selection. * * @param beginTime the begin time * @param range the range */ public synchronized void setThresholdBeginTimeAutoSelection(double beginTime, int range) { plot.removeDomainMarker(currentEnd); currentEnd = new ValueMarker(beginTime); currentEnd.setPaint(Color.red); currentEnd.setLabel(range + " min"); currentEnd.setStroke(new BasicStroke(1.0f)); currentEnd.setLabelAnchor(RectangleAnchor.TOP_RIGHT); currentEnd.setLabelTextAnchor(TextAnchor.TOP_LEFT); plot.addDomainMarker(currentEnd); } /** * Removes the threshold begin time auto selection. */ public void removeThresholdBeginTimeAutoSelection() { plot.removeDomainMarker(currentEnd); } /** * Adds the listener chart panel. * * @param l the l */ public void addListenerChartPanel(Object l) { chartPanel.addListenerReleaseMouse(l); } /** * Removes the listener chart panel. * * @param l the l */ public void removeListenerChartPanel(Object l) { chartPanel.removeListenerReleaseMouse(l); } /** * Sets the selection chart. * * @param flag the new selection chart */ public void setSelectionChart(boolean flag) { chartPanel.setDomainZoomable(flag); } /** * Checks if is mouse dragged. * * @return true, if is mouse dragged */ public boolean isMouseDragged() { return chartPanel.isMouseDragged(); } /** * */ public void setMinimalistic(boolean flag) { if (flag) { xAxis.setVisible(false); chart.setTitle(""); plot.getRangeAxis().setVisible(false); } else { xAxis.setVisible(true); chart.setTitle("Top activity"); plot.getRangeAxis().setVisible(true); } } /** * Set upper bound of range axis * * @param bound */ public void setUpperBoundOfRangeAxis(double bound) { if (bound == 0.0) { plot.getRangeAxis().setAutoRange(true); } else { plot.getRangeAxis().setAutoRange(false); plot.getRangeAxis().setUpperBound(bound * this.maxCpu); } } /** * Creates the chart. * * @return the j free chart */ private JFreeChart createChart() { xAxis = new DateAxis("time"); xAxis.setDateFormatOverride(new SimpleDateFormat("HH:mm")); currentDate = new Date(); updatexAxisLabel(new Long(currentDate.getTime()).doubleValue()); chart = ChartFactory.createStackedXYAreaChart("Top activity", // chart title "X Value", // domain axis label "Active Sessions", // range axis label dataset, // data PlotOrientation.VERTICAL, // the plot orientation xAxis, false, // legend true, // tooltips false // urls ); plot = (XYPlot) chart.getPlot(); StackedXYAreaRenderer3 renderer = new StackedXYAreaRenderer3(); renderer.setRoundXCoordinates(true); renderer.setBaseToolTipGenerator(new StandardXYToolTipGenerator("{0} ({1}, {2})", new SimpleDateFormat("HH:mm"), new DecimalFormat("0.0"))); plot.setRenderer(0, renderer); plot.getRangeAxis().setLowerBound(0.0); plot.getRangeAxis().setAutoRange(true); // add a labelled marker for the cpu_count thresholdMaxCpu = new ValueMarker(this.maxCpu); thresholdMaxCpu.setLabelOffsetType(LengthAdjustmentType.EXPAND); thresholdMaxCpu.setPaint(Color.red); thresholdMaxCpu.setStroke(new BasicStroke(1.0f)); thresholdMaxCpu.setLabel("Maximum CPU"); thresholdMaxCpu.setLabelFont(new Font("SansSerif", Font.PLAIN, 11)); thresholdMaxCpu.setLabelPaint(Color.red); thresholdMaxCpu.setLabelAnchor(RectangleAnchor.TOP_LEFT); thresholdMaxCpu.setLabelTextAnchor(TextAnchor.BOTTOM_LEFT); plot.addRangeMarker(thresholdMaxCpu); renderer.setSeriesPaint(0, Options.getInstance().getColor(Options.getInstance().getResource("cpuLabel.text")), true); renderer.setSeriesPaint(1, Options.getInstance().getColor(Options.getInstance().getResource("schedulerLabel.text")), true); renderer.setSeriesPaint(2, Options.getInstance().getColor(Options.getInstance().getResource("userIOLabel.text")), true); renderer.setSeriesPaint(3, Options.getInstance().getColor(Options.getInstance().getResource("systemIOLabel.text")), true); renderer.setSeriesPaint(4, Options.getInstance().getColor(Options.getInstance().getResource("concurrencyLabel.text")), true); renderer.setSeriesPaint(5, Options.getInstance().getColor(Options.getInstance().getResource("applicationsLabel.text")), true); renderer.setSeriesPaint(6, Options.getInstance().getColor(Options.getInstance().getResource("commitLabel.text")), true); renderer.setSeriesPaint(7, Options.getInstance().getColor(Options.getInstance().getResource("configurationLabel.text")), true); renderer.setSeriesPaint(8, Options.getInstance().getColor(Options.getInstance().getResource("administrativeLabel.text")), true); renderer.setSeriesPaint(9, Options.getInstance().getColor(Options.getInstance().getResource("networkLabel.text")), true); renderer.setSeriesPaint(11, Options.getInstance().getColor(Options.getInstance().getResource("queueningLabel.text")), true);//que renderer.setSeriesPaint(10, Options.getInstance().getColor(Options.getInstance().getResource("clusterLabel.text")), true);//cluster renderer.setSeriesPaint(12, Options.getInstance().getColor(Options.getInstance().getResource("otherLabel.text")), true); // Set format for x axis DateAxis axis = (DateAxis) plot.getDomainAxis(); axis.setDateFormatOverride(new SimpleDateFormat("HH:mm")); // Add legend to right LegendTitle legend = new LegendTitle(chart.getPlot()); BlockContainer wrapper = new BlockContainer(new BorderArrangement()); wrapper.setFrame(new BlockBorder(1.0, 1.0, 1.0, 1.0)); BlockContainer itemss = legend.getItemContainer(); itemss.setPadding(2, 10, 5, 2); wrapper.add(itemss); legend.setWrapper(wrapper); legend.setPosition(RectangleEdge.RIGHT); legend.setHorizontalAlignment(HorizontalAlignment.LEFT); chart.addSubtitle(legend); return chart; } /** * Creates the dataset. * * @throws DatabaseException the database exception */ private void createDataset() throws DatabaseException { dataset = new CategoryTableXYDataset(); this.database.loadDataToChartPanelDataSet(dataset); } }