Name: vi73552 Date: 06/14/99


The following code comes from the source of javax.swing.JTable in JDK 1.2:

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public int getScrollableUnitIncrement(Rectangle visibleRect, int orientation, int direction) {
  // PENDING(alan): do something smarter
  if (orientation == SwingConstants.HORIZONTAL) {
          return 100;
  }
  return rowHeight;
}

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The following implementation of this method scrolls one column at a time when scrolling horizontally:

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    int increment = rowHeight;

    if (orientation == SwingConstants.HORIZONTAL) {
      int column = columnAtPoint(visibleRect.getLocation());

      TableColumn tableColumn = null;
      if (direction < 0) {
        tableColumn = getColumnModel().getColumn(column - 1);
      }
      else {
        tableColumn = getColumnModel().getColumn(column);
      }

      if (tableColumn != null) {
        increment = tableColumn.getWidth() + 1; // add 1 to count for the line separating columns
      }
    }

    return increment;
  }
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(Review ID: 84307)
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