コード例 #1
0
 @Override
 public ChartView.Element getElementAt(int x, int y) {
   ChartView.Element element = new ChartView.Element(0, 0);
   ChartEntity chartEntity = getChartEntityAt(x, y);
   if (chartEntity instanceof CategoryItemEntity) {
     CategoryItemEntity categoryItemEntity = (CategoryItemEntity) chartEntity;
     CategoryDataset dataset = categoryItemEntity.getDataset();
     String columnKey = (String) categoryItemEntity.getColumnKey();
     int columnIndex = dataset.getColumnIndex(columnKey);
     String rowKey = (String) categoryItemEntity.getRowKey();
     int rowIndex = dataset.getRowIndex(rowKey);
     element = new ChartView.Element(rowIndex, columnIndex);
   } else if (chartEntity instanceof XYItemEntity) {
     XYItemEntity xyItemEntity = (XYItemEntity) chartEntity;
     element = new ChartView.Element(xyItemEntity.getSeriesIndex(), xyItemEntity.getItem());
   }
   return element;
 }
コード例 #2
0
  /**
   * Returns the middle coordinate (in Java2D space) for a series within a category.
   *
   * @param category the category (<code>null</code> not permitted).
   * @param seriesKey the series key (<code>null</code> not permitted).
   * @param dataset the dataset (<code>null</code> not permitted).
   * @param itemMargin the item margin (0.0 <= itemMargin < 1.0);
   * @param area the area (<code>null</code> not permitted).
   * @param edge the edge (<code>null</code> not permitted).
   * @return The coordinate in Java2D space.
   * @since 1.0.7
   */
  public double getCategorySeriesMiddle(
      Comparable category,
      Comparable seriesKey,
      CategoryDataset dataset,
      double itemMargin,
      Rectangle2D area,
      RectangleEdge edge) {

    int categoryIndex = dataset.getColumnIndex(category);
    int categoryCount = dataset.getColumnCount();
    int seriesIndex = dataset.getRowIndex(seriesKey);
    int seriesCount = dataset.getRowCount();
    double start = getCategoryStart(categoryIndex, categoryCount, area, edge);
    double end = getCategoryEnd(categoryIndex, categoryCount, area, edge);
    double width = end - start;
    if (seriesCount == 1) {
      return start + width / 2.0;
    }
    double gap = (width * itemMargin) / (seriesCount - 1);
    double ww = (width * (1 - itemMargin)) / seriesCount;
    return start + (seriesIndex * (ww + gap)) + ww / 2.0;
  }