javax.swing.table.DefaultTableCellRenderer#setOpaque ( )源码实例Demo

public ColorLegendTable(List<Pair<Color, String>> items) {
    setModel(new TableModel(items));

    // Make the table non-editable
    setFocusable(false);
    setRowSelectionAllowed(false);
    setRowHeight(SizeHelper.getComponentHeightFromFont(getFont()));
    setDefaultRenderer(Color.class, new ColorDataRenderer());
    setAutoResizeMode(JTable.AUTO_RESIZE_LAST_COLUMN);

    // Make the table transparent
    setShowGrid(false);
    setOpaque(false);
    DefaultTableCellRenderer renderer = (DefaultTableCellRenderer) getDefaultRenderer(Object.class);
    renderer.setOpaque(false);

    // Set the color cells square shape
    TableColumnModel columnModel = getColumnModel();
    int colorCellSize = getRowHeight();
    TableColumn column = columnModel.getColumn(0);
    column.setMinWidth(colorCellSize);
    column.setMaxWidth(colorCellSize);
}
 

/**
 * Create a chartPanel displaying a group of values.
 * @param props the names of the values to display.
 * @param title the title of the chartPanel.
 * @return a {@code JComponent} instance.
 */
private JComponent makeTablePanel(final Fields[] props, final String title) {
  final JPanel panel = new JPanel();
  panel.setAlignmentY(0f);
  panel.setLayout(new MigLayout("fill"));
  panel.setBorder(BorderFactory.createTitledBorder(title));
  final JTable table = new JTable() {
    @Override
    public boolean isCellEditable(final int row, final int column) {
      return false;
    }
  };
  final MonitorTableModel model = new MonitorTableModel(props);
  table.setModel(model);
  table.setOpaque(true);
  final DefaultTableCellRenderer rend1 = new DefaultTableCellRenderer();
  rend1.setHorizontalAlignment(SwingConstants.RIGHT);
  rend1.setOpaque(true);
  table.getColumnModel().getColumn(1).setCellRenderer(rend1);
  final DefaultTableCellRenderer rend0 = new DefaultTableCellRenderer();
  rend0.setHorizontalAlignment(SwingConstants.LEFT);
  rend0.setOpaque(true);
  table.getColumnModel().getColumn(0).setCellRenderer(rend0);
  //table.getColumnModel().getColumn(0).setMinWidth(maxLabelWidth + 10);
  table.getColumnModel().getColumn(0).setMinWidth(maxLabelWidth);
  //table.getColumnModel().getColumn(0).setMaxWidth(300);
  tableModels.add(model);
  panel.add(table, "growx, pushx");
  table.setAutoResizeMode(JTable.AUTO_RESIZE_ALL_COLUMNS);
  table.doLayout();
  table.setShowGrid(false);
  return panel;
}
 

public Component prepareRenderer(
        TableCellRenderer renderer,
        int row,
        int column) {
    
    SwitcherTableItem item
            = (SwitcherTableItem) getSwitcherTableModel().getValueAt(row, column);
    
    boolean selected = row == getSelectedRow() &&
            column == getSelectedColumn() && item != null;
    
    DefaultTableCellRenderer ren = (DefaultTableCellRenderer)
    renderer.getTableCellRendererComponent(this, item,
            selected, selected, row, column);
    
    if (item == null) {
        // it's a filler space, we're done
        ren.setOpaque(false);
        ren.setIcon(null);
        return ren;
    }
    
    Icon icon = item.getIcon();
    if (icon == null ) {
        icon = nullIcon;
    }
    ren.setText(selected || item.isActive() ? stripHtml( item.getHtmlName() ) : item.getHtmlName());
    ren.setIcon(icon);
    ren.setBorder(rendererBorder);
    ren.setIconTextGap(42 - icon.getIconWidth());
    
    if (item.isActive()) {
        // don't use deriveFont() - see #49973 for details
        ren.setFont(new Font(getFont().getName(), Font.BOLD, getFont().getSize()));
    }
    
    ren.setOpaque(true);
    
    return ren;
}
 

@Override
public void installUI(JComponent c) {
    super.installUI(c);

    JTableHeader j = (JTableHeader) c;
    j.setOpaque(false);

    DefaultTableCellRenderer dtcr = (DefaultTableCellRenderer) j.getDefaultRenderer();
    dtcr.setOpaque(false);
}
 

private static void checkTableGridLines() {

        TableModel dataModel = new AbstractTableModel() {
            public int getColumnCount() {
                return 10;
            }

            public int getRowCount() {
                return 10;
            }

            public Object getValueAt(int row, int col) {
                return " ";
            }
        };

        DefaultTableCellRenderer r = new DefaultTableCellRenderer();
        r.setOpaque(true);
        r.setBackground(CELL_RENDERER_BACKGROUND_COLOR);

        JTable table = new JTable(dataModel);
        table.setSize(WIDTH, HEIGHT);
        table.setDefaultRenderer(Object.class, r);
        table.setGridColor(GRID_COLOR);
        table.setShowGrid(true);
        table.setShowHorizontalLines(true);
        table.setShowVerticalLines(true);
        table.setBackground(TABLE_BACKGROUND_COLOR);

        checkTableGridLines(table);
    }
 

private static void checkTableGridLines() {

        TableModel dataModel = new AbstractTableModel() {
            public int getColumnCount() {
                return 10;
            }

            public int getRowCount() {
                return 10;
            }

            public Object getValueAt(int row, int col) {
                return " ";
            }
        };

        DefaultTableCellRenderer r = new DefaultTableCellRenderer();
        r.setOpaque(true);
        r.setBackground(CELL_RENDERER_BACKGROUND_COLOR);

        JTable table = new JTable(dataModel);
        table.setSize(WIDTH, HEIGHT);
        table.setDefaultRenderer(Object.class, r);
        table.setGridColor(GRID_COLOR);
        table.setShowGrid(true);
        table.setShowHorizontalLines(true);
        table.setShowVerticalLines(true);
        table.setBackground(TABLE_BACKGROUND_COLOR);

        checkTableGridLines(table);
    }
 

public Component prepareRenderer(
        TableCellRenderer renderer,
        int row,
        int column) {
    
    SwitcherTableItem item
            = (SwitcherTableItem) getSwitcherTableModel().getValueAt(row, column);
    
    boolean selected = row == getSelectedRow() &&
            column == getSelectedColumn() && item != null;
    
    DefaultTableCellRenderer ren = (DefaultTableCellRenderer)
    renderer.getTableCellRendererComponent(this, item,
            selected, selected, row, column);
    
    if (item == null) {
        // it's a filler space, we're done
        ren.setOpaque(false);
        ren.setIcon(null);
        return ren;
    }
    
    Icon icon = item.getIcon();
    if (icon == null ) {
        icon = nullIcon;
    }
    ren.setText(selected || item.isActive() ? stripHtml( item.getHtmlName() ) : item.getHtmlName());
    ren.setIcon(icon);
    ren.setBorder(rendererBorder);
    ren.setIconTextGap(26 - icon.getIconWidth());
    
    if (item.isActive()) {
        if( Utilities.isWindows() ) {
            ren.setFont(getFont().deriveFont(Font.BOLD, getFont().getSize()));
        } else {
            // don't use deriveFont() - see #49973 for details
            ren.setFont(new Font(getFont().getName(), Font.BOLD, getFont().getSize()));
        }
    }
    
    ren.setOpaque(true);
    
    return ren;
}