/* =========================================================== * JFreeChart : a free chart library for the Java(tm) platform * =========================================================== * * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors. * * Project Info: http://www.jfree.org/jfreechart/index.html * * This library is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2.1 of the License, or * (at your option) any later version. * * This library 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 Lesser General Public * License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, * USA. * * [Java is a trademark or registered trademark of Sun Microsystems, Inc. * in the United States and other countries.] * * ------------------------ * IntervalBarRenderer.java * ------------------------ * (C) Copyright 2002-2005, by Jeremy Bowman. * * Original Author: Jeremy Bowman; * Contributor(s): David Gilbert (for Object Refinery Limited); * Christian W. Zuckschwerdt; * * $Id: IntervalBarRenderer.java,v 1.6.2.2 2005/12/01 20:33:26 mungady Exp $ * * Changes * ------- * 29-Apr-2002 : Version 1, contributed by Jeremy Bowman (DG); * 11-May-2002 : Use CategoryPlot.getLabelsVisible() (JB); * 29-May-2002 : Added constructors (DG); * 26-Jun-2002 : Added axis to initialise method (DG); * 20-Sep-2002 : Added basic support for chart entities (DG); * 24-Oct-2002 : Amendments for changes in CategoryDataset interface and * CategoryToolTipGenerator interface (DG); * 05-Nov-2002 : Base dataset is now TableDataset not CategoryDataset (DG); * 25-Mar-2003 : Implemented Serializable (DG); * 30-Jul-2003 : Modified entity constructor (CZ); * 19-Aug-2003 : Implemented Cloneable and PublicCloneable (DG); * 08-Sep-2003 : Added checks for null values (DG); * 07-Oct-2003 : Added renderer state (DG); * 21-Oct-2003 : Bar width moved into renderer state (DG); * 23-Dec-2003 : Removed the deprecated MultiIntervalCategoryDataset * interface (DG); * 05-Nov-2004 : Modified drawItem() signature (DG); * 20-Apr-2005 : Renamed CategoryLabelGenerator * --> CategoryItemLabelGenerator (DG); * */ package org.jfree.chart.renderer.category; import java.awt.Graphics2D; import java.awt.Paint; import java.awt.Stroke; import java.awt.geom.Rectangle2D; import java.io.Serializable; import org.jfree.chart.axis.CategoryAxis; import org.jfree.chart.axis.ValueAxis; import org.jfree.chart.entity.CategoryItemEntity; import org.jfree.chart.entity.EntityCollection; import org.jfree.chart.labels.CategoryItemLabelGenerator; import org.jfree.chart.labels.CategoryToolTipGenerator; import org.jfree.chart.plot.CategoryPlot; import org.jfree.chart.plot.PlotOrientation; import org.jfree.data.category.CategoryDataset; import org.jfree.data.category.IntervalCategoryDataset; import org.jfree.ui.RectangleEdge; import org.jfree.util.PublicCloneable; /** * A renderer that handles the drawing of bars for a bar plot where * each bar has a high and low value. *
* For use with the {@link CategoryPlot} class. * * @author Jeremy Bowman */ public class IntervalBarRenderer extends BarRenderer implements CategoryItemRenderer, Cloneable, PublicCloneable, Serializable { /** For serialization. */ private static final long serialVersionUID = -5068857361615528725L; /** * Constructs a new renderer. */ public IntervalBarRenderer() { super(); } /** * Draws the bar for a single (series, category) data item. * * @param g2 the graphics device. * @param state the renderer state. * @param dataArea the data area. * @param plot the plot. * @param domainAxis the domain axis. * @param rangeAxis the range axis. * @param dataset the dataset. * @param row the row index (zero-based). * @param column the column index (zero-based). * @param pass the pass index. */ public void drawItem(Graphics2D g2, CategoryItemRendererState state, Rectangle2D dataArea, CategoryPlot plot, CategoryAxis domainAxis, ValueAxis rangeAxis, CategoryDataset dataset, int row, int column, int pass) { if (dataset instanceof IntervalCategoryDataset) { IntervalCategoryDataset d = (IntervalCategoryDataset) dataset; drawInterval( g2, state, dataArea, plot, domainAxis, rangeAxis, d, row, column ); } else { super.drawItem( g2, state, dataArea, plot, domainAxis, rangeAxis, dataset, row, column, pass ); } } /** * Draws a single interval. * * @param g2 the graphics device. * @param state the renderer state. * @param dataArea the data plot area. * @param plot the plot. * @param domainAxis the domain axis. * @param rangeAxis the range axis. * @param dataset the data. * @param row the row index (zero-based). * @param column the column index (zero-based). */ protected void drawInterval(Graphics2D g2, CategoryItemRendererState state, Rectangle2D dataArea, CategoryPlot plot, CategoryAxis domainAxis, ValueAxis rangeAxis, IntervalCategoryDataset dataset, int row, int column) { int seriesCount = getRowCount(); int categoryCount = getColumnCount(); PlotOrientation orientation = plot.getOrientation(); double rectX = 0.0; double rectY = 0.0; RectangleEdge domainAxisLocation = plot.getDomainAxisEdge(); RectangleEdge rangeAxisLocation = plot.getRangeAxisEdge(); // Y0 Number value0 = dataset.getEndValue(row, column); if (value0 == null) { return; } double java2dValue0 = rangeAxis.valueToJava2D( value0.doubleValue(), dataArea, rangeAxisLocation ); // Y1 Number value1 = dataset.getStartValue(row, column); if (value1 == null) { return; } double java2dValue1 = rangeAxis.valueToJava2D( value1.doubleValue(), dataArea, rangeAxisLocation ); if (java2dValue1 < java2dValue0) { double temp = java2dValue1; java2dValue1 = java2dValue0; java2dValue0 = temp; Number tempNum = value1; value1 = value0; value0 = tempNum; } // BAR WIDTH double rectWidth = state.getBarWidth(); // BAR HEIGHT double rectHeight = Math.abs(java2dValue1 - java2dValue0); if (orientation == PlotOrientation.HORIZONTAL) { // BAR Y rectY = domainAxis.getCategoryStart( column, getColumnCount(), dataArea, domainAxisLocation ); if (seriesCount > 1) { double seriesGap = dataArea.getHeight() * getItemMargin() / (categoryCount * (seriesCount - 1)); rectY = rectY + row * (state.getBarWidth() + seriesGap); } else { rectY = rectY + row * state.getBarWidth(); } rectX = java2dValue0; rectHeight = state.getBarWidth(); rectWidth = Math.abs(java2dValue1 - java2dValue0); } else if (orientation == PlotOrientation.VERTICAL) { // BAR X rectX = domainAxis.getCategoryStart( column, getColumnCount(), dataArea, domainAxisLocation ); if (seriesCount > 1) { double seriesGap = dataArea.getWidth() * getItemMargin() / (categoryCount * (seriesCount - 1)); rectX = rectX + row * (state.getBarWidth() + seriesGap); } else { rectX = rectX + row * state.getBarWidth(); } rectY = java2dValue0; } Rectangle2D bar = new Rectangle2D.Double( rectX, rectY, rectWidth, rectHeight ); Paint seriesPaint = getItemPaint(row, column); g2.setPaint(seriesPaint); g2.fill(bar); // draw the outline... if (state.getBarWidth() > BAR_OUTLINE_WIDTH_THRESHOLD) { Stroke stroke = getItemOutlineStroke(row, column); Paint paint = getItemOutlinePaint(row, column); if (stroke != null && paint != null) { g2.setStroke(stroke); g2.setPaint(paint); g2.draw(bar); } } CategoryItemLabelGenerator generator = getItemLabelGenerator(row, column); if (generator != null && isItemLabelVisible(row, column)) { drawItemLabel( g2, dataset, row, column, plot, generator, bar, false ); } // collect entity and tool tip information... if (state.getInfo() != null) { EntityCollection entities = state.getEntityCollection(); if (entities != null) { String tip = null; CategoryToolTipGenerator tipster = getToolTipGenerator(row, column); if (tipster != null) { tip = tipster.generateToolTip(dataset, row, column); } String url = null; if (getItemURLGenerator(row, column) != null) { url = getItemURLGenerator(row, column).generateURL( dataset, row, column ); } CategoryItemEntity entity = new CategoryItemEntity( bar, tip, url, dataset, row, dataset.getColumnKey(column), column ); entities.add(entity); } } } }