JFreeChart web报表开发实例

package bar; import java.awt.GradientPaint; import java.awt.Graphics2D; import java.awt.geom.*; 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.CategoryToolTipGenerator; import org.jfree.chart.plot.CategoryPlot; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.renderer.category.BarRenderer3D; import org.jfree.chart.renderer.category.CategoryItemRendererState; import org.jfree.data.category.CategoryDataset; /** * 自定义的圆柱形表现类. */ public class CylinderRenderer extends BarRenderer3D { public CylinderRenderer() { } public CylinderRenderer(double d, double d1) { super(d, d1); } /** * 画圆柱形柱子的方法. */ public void drawItem(Graphics2D graphics2d, CategoryItemRendererState categoryitemrendererstate, Rectangle2D rectangle2d, CategoryPlot categoryplot, CategoryAxis categoryaxis, ValueAxis valueaxis, CategoryDataset categorydataset, int i, int j, int k) { Number number = categorydataset.getValue(i, j); if (number == null) return; double d = number.doubleValue(); java.awt.geom.Rectangle2D.Double double1 = new java.awt.geom.Rectangle2D.Double( rectangle2d.getX(), rectangle2d.getY() + getYOffset(), rectangle2d.getWidth() - getXOffset(), rectangle2d.getHeight() - getYOffset()); PlotOrientation plotorientation = categoryplot.getOrientation(); double d1 = calculateBarW0(categoryplot, plotorientation, double1, categoryaxis, categoryitemrendererstate, i, j); double ad[] = calculateBarL0L1(d); if (ad == null) return; org.jfree.ui.RectangleEdge rectangleedge = categoryplot .getRangeAxisEdge(); float f = (float) valueaxis .valueToJava2D(ad[0], double1, rectangleedge); float f1 = (float) valueaxis.valueToJava2D(ad[1], double1, rectangleedge); float f2 = Math.min(f, f1); float f3 = Math.abs(f1 - f); GeneralPath generalpath = new GeneralPath(); java.awt.geom.Ellipse2D.Double double2 = null; if (plotorientation == PlotOrientation.HORIZONTAL) { generalpath.moveTo((float) ((double) f2 + getXOffset() / 2D), (float) d1); generalpath.lineTo( (float) ((double) (f2 + f3) + getXOffset() / 2D), (float) d1); java.awt.geom.Arc2D.Double double3 = new java.awt.geom.Arc2D.Double( f2 + f3, d1, getXOffset(), categoryitemrendererstate .getBarWidth(), 90D, 180D, 0); generalpath.append(double3, true); generalpath.lineTo((float) ((double) f2 + getXOffset() / 2D), (float) (d1 + categoryitemrendererstate.getBarWidth())); double3 = new java.awt.geom.Arc2D.Double(f2, d1, getXOffset(), categoryitemrendererstate.getBarWidth(), 270D, -180D, 0); generalpath.append(double3, true); generalpath.closePath(); double2 = new java.awt.geom.Ellipse2D.Double(f2 + f3, d1, getXOffset(), categoryitemrendererstate.getBarWidth()); } else { generalpath.moveTo((float) d1, (float) ((double) f2 - getYOffset() / 2D)); generalpath.lineTo((float) d1, (float) ((double) (f2 + f3) - getYOffset() / 2D)); java.awt.geom.Arc2D.Double double4 = new java.awt.geom.Arc2D.Double( d1, (double) (f2 + f3) - getYOffset(), categoryitemrendererstate.getBarWidth(), getYOffset(), 180D, 180D, 0); generalpath.append(double4, true); generalpath.lineTo((float) (d1 + categoryitemrendererstate .getBarWidth()), (float) ((double) f2 - getYOffset() / 2D)); double4 = new java.awt.geom.Arc2D.Double(d1, (double) f2 - getYOffset(), categoryitemrendererstate.getBarWidth(), getYOffset(), 0.0D, -180D, 0); generalpath.append(double4, true); generalpath.closePath(); double2 = new java.awt.geom.Ellipse2D.Double(d1, (double) f2 - getYOffset(), categoryitemrendererstate.getBarWidth(), getYOffset()); } Object obj = getItemPaint(i, j); if (getGradientPaintTransformer() != null && (obj instanceof GradientPaint)) { GradientPaint gradientpaint = (GradientPaint) obj; obj = getGradientPaintTransformer().transform(gradientpaint, generalpath); } graphics2d.setPaint(((java.awt.Paint) (obj))); graphics2d.fill(generalpath); if (obj instanceof GradientPaint) graphics2d.setPaint(((GradientPaint) obj).getColor2()); if (double2 != null) graphics2d.fill(double2); if (isDrawBarOutline() && categoryitemrendererstate.getBarWidth() > 3D) { graphics2d.setStroke(getItemOutlineStroke(i, j)); graphics2d.setPaint(getItemOutlinePaint(i, j)); graphics2d.draw(generalpath); if (double2 != null) graphics2d.draw(double2); } org.jfree.chart.labels.CategoryItemLabelGenerator categoryitemlabelgenerator = getItemLabelGenerator( i, j); if (categoryitemlabelgenerator != null && isItemLabelVisible(i, j)) drawItemLabel(graphics2d, categorydataset, i, j, categoryplot, categoryitemlabelgenerator, generalpath.getBounds2D(), d < 0.0D); if (categoryitemrendererstate.getInfo() != null) { EntityCollection entitycollection = categoryitemrendererstate .getEntityCollection(); if (entitycollection != null) { String s = null; CategoryToolTipGenerator categorytooltipgenerator = getToolTipGenerator( i, j); if (categorytooltipgenerator != null) s = categorytooltipgenerator.generateToolTip( categorydataset, i, j); String s1 = null; if (getItemURLGenerator(i, j) != null) s1 = getItemURLGenerator(i, j).generateURL(categorydataset, i, j); CategoryItemEntity categoryitementity = new CategoryItemEntity( generalpath.getBounds2D(), s, s1, categorydataset, categorydataset.getRowKey(i), categorydataset .getColumnKey(j)); entitycollection.add(categoryitementity); } } } }