Exemplo n.º 1
0
  public void updateColumnSizes() {
    final JTableHeader header = getTableHeader();
    final TableCellRenderer defaultRenderer = header == null ? null : header.getDefaultRenderer();

    final RowSorter<? extends TableModel> sorter = getRowSorter();
    final List<? extends RowSorter.SortKey> current = sorter == null ? null : sorter.getSortKeys();
    ColumnInfo[] columns = getListTableModel().getColumnInfos();
    for (int i = 0; i < columns.length; i++) {
      final ColumnInfo columnInfo = columns[i];
      final TableColumn column = getColumnModel().getColumn(i);
      // hack to get sort arrow included into the renderer component
      if (sorter != null && columnInfo.isSortable()) {
        sorter.setSortKeys(
            Collections.singletonList(new RowSorter.SortKey(i, SortOrder.ASCENDING)));
      }

      final Component headerComponent =
          defaultRenderer == null
              ? null
              : defaultRenderer.getTableCellRendererComponent(
                  this, column.getHeaderValue(), false, false, 0, 0);

      if (sorter != null && columnInfo.isSortable()) {
        sorter.setSortKeys(current);
      }
      final Dimension headerSize =
          headerComponent == null ? new Dimension(0, 0) : headerComponent.getPreferredSize();
      final String maxStringValue;
      final String preferredValue;
      if (columnInfo.getWidth(this) > 0) {
        int width = columnInfo.getWidth(this);
        column.setMaxWidth(width);
        column.setPreferredWidth(width);
        column.setMinWidth(width);
      } else if ((maxStringValue = columnInfo.getMaxStringValue()) != null) {
        int width =
            getFontMetrics(getFont()).stringWidth(maxStringValue) + columnInfo.getAdditionalWidth();
        width = Math.max(width, headerSize.width);
        column.setPreferredWidth(width);
        column.setMaxWidth(width);
      } else if ((preferredValue = columnInfo.getPreferredStringValue()) != null) {
        int width =
            getFontMetrics(getFont()).stringWidth(preferredValue) + columnInfo.getAdditionalWidth();
        width = Math.max(width, headerSize.width);
        column.setPreferredWidth(width);
      }
    }
  }
  public void updateColumnSizes() {
    final JTableHeader header = getTableHeader();
    final TableCellRenderer defaultRenderer = header == null ? null : header.getDefaultRenderer();

    final RowSorter<? extends TableModel> sorter = getRowSorter();
    final List<? extends RowSorter.SortKey> current = sorter == null ? null : sorter.getSortKeys();
    ColumnInfo[] columns = getListTableModel().getColumnInfos();
    int[] sizeMode = new int[columns.length];
    int[] headers = new int[columns.length];
    int[] widths = new int[columns.length];
    int allColumnWidth = 0;
    int varCount = 0;

    // calculate
    for (int i = 0; i < columns.length; i++) {
      final ColumnInfo columnInfo = columns[i];
      final TableColumn column = getColumnModel().getColumn(i);
      // hack to get sort arrow included into the renderer component
      if (sorter != null && columnInfo.isSortable()) {
        sorter.setSortKeys(
            Collections.singletonList(new RowSorter.SortKey(i, SortOrder.ASCENDING)));
      }

      final Component headerComponent =
          defaultRenderer == null
              ? null
              : defaultRenderer.getTableCellRendererComponent(
                  this, column.getHeaderValue(), false, false, 0, 0);

      if (sorter != null && columnInfo.isSortable()) {
        sorter.setSortKeys(current);
      }
      if (headerComponent != null) {
        headers[i] = headerComponent.getPreferredSize().width;
      }
      final String maxStringValue;
      final String preferredValue;
      if (columnInfo.getWidth(this) > 0) {
        sizeMode[i] = 1;
        int width = columnInfo.getWidth(this);
        widths[i] = width;
      } else if ((maxStringValue = columnInfo.getMaxStringValue()) != null) {
        sizeMode[i] = 2;
        widths[i] =
            getFontMetrics(getFont()).stringWidth(maxStringValue) + columnInfo.getAdditionalWidth();
        varCount++;
      } else if ((preferredValue = columnInfo.getPreferredStringValue()) != null) {
        sizeMode[i] = 3;
        widths[i] =
            getFontMetrics(getFont()).stringWidth(preferredValue) + columnInfo.getAdditionalWidth();
        varCount++;
      }
      allColumnWidth += widths[i];
    }

    // apply: distribute available space between resizable columns
    //        and make sure that header will fit as well
    int viewWidth = getParent() != null ? getParent().getWidth() : getWidth();
    double gold = 0.5 * (3 - Math.sqrt(5));
    int addendum =
        varCount == 0 || viewWidth < allColumnWidth
            ? 0
            : (int)
                    ((allColumnWidth < gold * viewWidth
                            ? gold * viewWidth
                            : allColumnWidth < (1 - gold) * viewWidth
                                ? (1 - gold) * viewWidth
                                : viewWidth)
                        - allColumnWidth)
                / varCount;

    for (int i = 0; i < columns.length; i++) {
      TableColumn column = getColumnModel().getColumn(i);
      int width = widths[i];
      if (sizeMode[i] == 1) {
        column.setMaxWidth(width);
        column.setPreferredWidth(width);
        column.setMinWidth(width);
      } else if (sizeMode[i] == 2) {
        width = Math.max(width + addendum, headers[i]);
        column.setPreferredWidth(width);
        column.setMaxWidth(width);
      } else if (sizeMode[i] == 3) {
        width = Math.max(width + addendum, headers[i]);
        column.setPreferredWidth(width);
      }
    }
  }