intervalbarrenderer.java

JFreeChartweb图表

                rectY = rectY + row * (getBarWidth() + seriesGap);
            }
            else {
                rectY = rectY + row * getBarWidth();
            }
            
            rectX = java2dValue0;

            rectHeight = 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 * (getBarWidth() + seriesGap);
            }
            else {
                rectX = rectX + row * 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 (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 (getInfo() != null) {
            EntityCollection entities = getInfo().getEntityCollection();
            if (entities != null) {
                String tip = null;
                if (generator != null) {
                    tip = generator.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.addEntity(entity);
            }
        }

    }
    
    /**
     * Draws the sub-intervals for one item.
     *
     * @param g2  the graphics device.
     * @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).
     */
    private void drawSubIntervals(Graphics2D g2,
                                  Rectangle2D dataArea,
                                  CategoryPlot plot,
                                  CategoryAxis domainAxis,
                                  ValueAxis rangeAxis,
                                  MultiIntervalCategoryDataset dataset,
                                  int row,
                                  int column) {

        int count = dataset.getSubIntervalCount(row, column);
        if (count == 0) {
            drawInterval(g2, dataArea, plot, domainAxis, rangeAxis, dataset, row, column);
        }

        for (int subinterval = 0; subinterval < count; subinterval++) {
            
            RectangleEdge domainAxisLocation = plot.getDomainAxisEdge();
            RectangleEdge rangeAxisLocation = plot.getRangeAxisEdge();

            // X0
            Number value0 = dataset.getStartValue(row, column, subinterval);
            if (value0 == null) {
                return;
            }
            double translatedValue0 = rangeAxis.translateValueToJava2D(value0.doubleValue(), 
                                                                       dataArea,
                                                                       rangeAxisLocation);
    
            // X1
            Number value1 = dataset.getEndValue(row, column, subinterval);
            if (value1 == null) {
                return;
            }
            double translatedValue1 = rangeAxis.translateValueToJava2D(value1.doubleValue(), 
                                                                       dataArea,
                                                                       rangeAxisLocation);
    
            if (translatedValue1 < translatedValue0) {
                double temp = translatedValue1;
                translatedValue1 = translatedValue0;
                translatedValue0 = temp;
            }
    
            // Y
            double rectY = domainAxis.getCategoryStart(column, getColumnCount(), dataArea,
                                                       domainAxisLocation);
    
            int rows = getRowCount();
            int columns = getColumnCount();
            if (rows > 1) {
                double seriesGap = dataArea.getHeight() * getItemMargin()
                                   / (columns * (rows - 1));
                rectY = rectY + row * (getBarWidth() + seriesGap);
            }
            else {
                rectY = rectY + row * getBarWidth();
            }
    
            // WIDTH
            double rectWidth = Math.abs(translatedValue1 - translatedValue0);
    
            // HEIGHT
            double rectHeight = getBarWidth();
    
            // DRAW THE BAR...
            Rectangle2D bar = null;
            
            if (plot.getOrientation() == PlotOrientation.HORIZONTAL) {
                bar = new Rectangle2D.Double(translatedValue0, rectY, 
                                             rectWidth, rectHeight);
            }
            else if (plot.getOrientation() == PlotOrientation.VERTICAL) {
                bar = new Rectangle2D.Double(rectY, translatedValue0, rectHeight, rectWidth);
            }
    
            Paint seriesPaint = getItemPaint(row, column);
            g2.setPaint(seriesPaint);
            g2.fill(bar);
            if (getBarWidth() > BAR_OUTLINE_WIDTH_THRESHOLD) {
                g2.setStroke(getItemStroke(row, column));
                g2.setPaint(getItemOutlinePaint(row, column));
                g2.draw(bar);
            }
    
            // collect entity and tool tip information...
            if (getInfo() != null) {
                EntityCollection entities = getInfo().getEntityCollection();
                if (entities != null) {
                    String tip = null;
                    if (getItemLabelGenerator(row, column) != null) {
                        tip = getItemLabelGenerator(row, column).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.addEntity(entity);
                }
            }
        }
    }


}