icontablecellrenderer.java

一个类似QQ的在线通讯聊天软件原码,适合初学者参考学习。

package openicq.gui;

import java.awt.Color;
import java.awt.Component;

import javax.swing.*;
import javax.swing.border.Border;
import javax.swing.table.TableCellRenderer;

/**
 * The <code>IconTableCellRenderer</code> class paints icons into the cells of
 * a table.
 * @author Hansgeorg Schwibbe
 * @copyright 2004
 */
public class IconTableCellRenderer extends JLabel implements TableCellRenderer
{
  private JLabel iconLabel = new JLabel();

  /**
   * Initializes a new instance of the class <code>IconTableCellRenderer</code>
   * without any icon.
   */
  public IconTableCellRenderer()
  {
    super();
  }

  /**
   * Initializes a new instance of the class <code>IconTableCellRenderer</code>
   * with the specified icon.
   * @param iconSource the path to the specified icon
   */
  public IconTableCellRenderer(String iconSource)
  {
    this.iconLabel.setIcon(new ImageIcon(iconSource));
  }

  /**
   * Sets the path of the cell icon.
   * @param iconSource path of the icon
   */
  public void setCellIconSource(String iconSource)
  {
    this.iconLabel.setIcon(new ImageIcon(iconSource));
  }

  /**
   * Sets the background color of the cell.
   * @param bg the background color of the cell
   */
  public void setCellBackground(Color bg)
  {
    this.iconLabel.setBackground(bg);
  }

  /**
   * Sets the foreground color of the cell.
   * @param fg the foreground color of the cell
   */
  public void setCellForeground(Color fg)
  {
    this.iconLabel.setForeground(fg);
  }

  /**
   * Sets the border of the cell.
   * @param border the border of the cell
   */
  public void setCellBorder(Border border)
  {
    this.iconLabel.setBorder(border);
  }

  /**
   * Sets the horizontal alignment of the text inside the cell.
   * @param alignment the horizontal alignment
   */
  public void setCellHorizontalAlignment(int alignment)
  {
    this.iconLabel.setHorizontalAlignment(alignment);
  }

  /**
   * (non-Javadoc)
   * @see javax.swing.table.TableCellRenderer#getTableCellRendererComponent(javax.swing.JTable,
   *      java.lang.Object, boolean, boolean, int, int)
   */
  public Component getTableCellRendererComponent(JTable table, Object value,
                                                 boolean isSelected,
                                                 boolean hasFocus, int row,
                                                 int column)
  {
    iconLabel.setFont(table.getFont());
    iconLabel.setEnabled(table.isEnabled());
    iconLabel.setOpaque(table.isOpaque());
    iconLabel.setText(String.valueOf(value));
    return iconLabel;
  }
}