Java tutorial
/* * The MIT License * * Copyright (c) 2004-2009, Sun Microsystems, Inc., Kohsuke Kawaguchi * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ package hudson.util; import org.jfree.chart.axis.CategoryAxis; import org.jfree.chart.axis.ValueAxis; import org.jfree.chart.entity.EntityCollection; import org.jfree.chart.labels.CategoryToolTipGenerator; import org.jfree.chart.plot.CategoryPlot; import org.jfree.chart.renderer.AreaRendererEndType; import org.jfree.chart.renderer.category.CategoryItemRendererState; import org.jfree.chart.renderer.category.StackedAreaRenderer; import org.jfree.chart.urls.CategoryURLGenerator; import org.jfree.data.category.CategoryDataset; import org.jfree.ui.RectangleEdge; import java.awt.Graphics2D; import java.awt.Polygon; import java.awt.Paint; import java.awt.geom.Rectangle2D; /** * Modified {@link StackedAreaRenderer}. * * <ol> * <li>Built-in support for {@link #generateToolTip(CategoryDataset, int, int) tooltip} * and {@link #generateURL(CategoryDataset, int, int) hyperlinks} for clickable map. * <li>Clickable map hit test is modified so that the entire area is clickable, * not just the small area around each data point. * <li>Rendering algorithm is modified so that * {@link #getItemPaint(int, int) different color on the same data series} * will look more natural. * </ol> * * @author Kohsuke Kawaguchi */ public class StackedAreaRenderer2 extends StackedAreaRenderer implements CategoryToolTipGenerator, CategoryURLGenerator { public StackedAreaRenderer2() { setEndType(AreaRendererEndType.TRUNCATE); setItemURLGenerator(this); setToolTipGenerator(this); } /** * Override this method to specify the hyperlink target of the given data point. */ public String generateURL(CategoryDataset dataset, int row, int column) { return null; } /** * Override this method to specify the tool tip text of the given data point. */ public String generateToolTip(CategoryDataset dataset, int row, int column) { return null; } /** * Override this method to specify the color to draw the given area. */ public Paint getItemPaint(int row, int column) { return super.getItemPaint(row, column); } // Mostly copied from the base class. @Override public void drawItem(Graphics2D g2, CategoryItemRendererState state, Rectangle2D dataArea, CategoryPlot plot, CategoryAxis domainAxis, ValueAxis rangeAxis, CategoryDataset dataset, int row, int column, int pass) { // plot non-null values... Number dataValue = dataset.getValue(row, column); if (dataValue == null) { return; } double value = dataValue.doubleValue(); // leave the y values (y1, y0) untranslated as it is going to be be // stacked up later by previous series values, after this it will be // translated. double xx1 = domainAxis.getCategoryMiddle(column, getColumnCount(), dataArea, plot.getDomainAxisEdge()); double previousHeightx1 = getPreviousHeight(dataset, row, column); double y1 = value + previousHeightx1; RectangleEdge location = plot.getRangeAxisEdge(); double yy1 = rangeAxis.valueToJava2D(y1, dataArea, location); g2.setPaint(getItemPaint(row, column)); g2.setStroke(getItemStroke(row, column)); // add an item entity, if this information is being collected EntityCollection entities = state.getEntityCollection(); // in column zero, the only job to do is draw any visible item labels // and this is done in the second pass... if (column == 0) { if (pass == 1) { // draw item labels, if visible if (isItemLabelVisible(row, column)) { drawItemLabel(g2, plot.getOrientation(), dataset, row, column, xx1, yy1, (y1 < 0.0)); } } } else { Number previousValue = dataset.getValue(row, column - 1); if (previousValue != null) { double xx0 = domainAxis.getCategoryMiddle(column - 1, getColumnCount(), dataArea, plot.getDomainAxisEdge()); double y0 = previousValue.doubleValue(); // Get the previous height, but this will be different for both // y0 and y1 as the previous series values could differ. double previousHeightx0 = getPreviousHeight(dataset, row, column - 1); // Now stack the current y values on top of the previous values. y0 += previousHeightx0; // Now translate the previous heights double previousHeightxx0 = rangeAxis.valueToJava2D(previousHeightx0, dataArea, location); double previousHeightxx1 = rangeAxis.valueToJava2D(previousHeightx1, dataArea, location); // Now translate the current y values. double yy0 = rangeAxis.valueToJava2D(y0, dataArea, location); if (pass == 0) { // left half Polygon p = new Polygon(); p.addPoint((int) xx0, (int) yy0); p.addPoint((int) (xx0 + xx1) / 2, (int) (yy0 + yy1) / 2); p.addPoint((int) (xx0 + xx1) / 2, (int) (previousHeightxx0 + previousHeightxx1) / 2); p.addPoint((int) xx0, (int) previousHeightxx0); g2.setPaint(getItemPaint(row, column - 1)); g2.setStroke(getItemStroke(row, column - 1)); g2.fill(p); if (entities != null) addItemEntity(entities, dataset, row, column - 1, p); // right half p = new Polygon(); p.addPoint((int) xx1, (int) yy1); p.addPoint((int) (xx0 + xx1) / 2, (int) (yy0 + yy1) / 2); p.addPoint((int) (xx0 + xx1) / 2, (int) (previousHeightxx0 + previousHeightxx1) / 2); p.addPoint((int) xx1, (int) previousHeightxx1); g2.setPaint(getItemPaint(row, column)); g2.setStroke(getItemStroke(row, column)); g2.fill(p); if (entities != null) addItemEntity(entities, dataset, row, column, p); } else { if (isItemLabelVisible(row, column)) { drawItemLabel(g2, plot.getOrientation(), dataset, row, column, xx1, yy1, (y1 < 0.0)); } } } } } }