Table header: Label Header with icon : Table Column « Swing JFC « Java

1. Java
2. Swing JFC
3. Table Column

Table header: Label Header with icon

  
/*
Definitive Guide to Swing for Java 2, Second Edition
By John Zukowski     
ISBN: 1-893115-78-X
Publisher: APress
*/

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Graphics;
import java.awt.Polygon;

import javax.swing.Icon;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.UIManager;
import javax.swing.border.Border;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;
import javax.swing.table.TableColumnModel;

public class LabelHeaderSample {
  public static void main(String args[]) {
    Object rows[][] = { { "one", "ichi - \u4E00" },
        { "two", "ni - \u4E8C" }, { "three", "san - \u4E09" },
        { "four", "shi - \u56DB" }, { "five", "go - \u4E94" },
        { "six", "roku - \u516D" }, { "seven", "shichi - \u4E03" },
        { "eight", "hachi - \u516B" }, { "nine", "kyu - \u4E5D" },
        { "ten", "ju - \u5341" } };
    JFrame frame = new JFrame("Label Header");
    String headers[] = { "English", "Japanese" };
    JTable table = new JTable(rows, headers);
    JScrollPane scrollPane = new JScrollPane(table);

    Icon redIcon = new DiamondIcon(Color.red);
    Icon blueIcon = new DiamondIcon(Color.blue);

    Border headerBorder = UIManager.getBorder("TableHeader.cellBorder");

    JLabel blueLabel = new JLabel(headers[0], blueIcon, JLabel.CENTER);
    blueLabel.setBorder(headerBorder);
    JLabel redLabel = new JLabel(headers[1], redIcon, JLabel.CENTER);
    redLabel.setBorder(headerBorder);

    TableCellRenderer renderer = new JComponentTableCellRenderer();

    TableColumnModel columnModel = table.getColumnModel();

    TableColumn column0 = columnModel.getColumn(0);
    TableColumn column1 = columnModel.getColumn(1);

    column0.setHeaderRenderer(renderer);
    column0.setHeaderValue(blueLabel);

    column1.setHeaderRenderer(renderer);
    column1.setHeaderValue(redLabel);

    frame.getContentPane().add(scrollPane, BorderLayout.CENTER);
    frame.setSize(300, 150);
    frame.setVisible(true);
  }
}

class DiamondIcon implements Icon {
  private Color color;

  private boolean selected;

  private int width;

  private int height;

  private Polygon poly;

  private static final int DEFAULT_WIDTH = 10;

  private static final int DEFAULT_HEIGHT = 10;

  public DiamondIcon(Color color) {
    this(color, true, DEFAULT_WIDTH, DEFAULT_HEIGHT);
  }

  public DiamondIcon(Color color, boolean selected) {
    this(color, selected, DEFAULT_WIDTH, DEFAULT_HEIGHT);
  }

  public DiamondIcon(Color color, boolean selected, int width, int height) {
    this.color = color;
    this.selected = selected;
    this.width = width;
    this.height = height;
    initPolygon();
  }

  private void initPolygon() {
    poly = new Polygon();
    int halfWidth = width / 2;
    int halfHeight = height / 2;
    poly.addPoint(0, halfHeight);
    poly.addPoint(halfWidth, 0);
    poly.addPoint(width, halfHeight);
    poly.addPoint(halfWidth, height);
  }

  public int getIconHeight() {
    return height;
  }

  public int getIconWidth() {
    return width;
  }

  public void paintIcon(Component c, Graphics g, int x, int y) {
    g.setColor(color);
    g.translate(x, y);
    if (selected) {
      g.fillPolygon(poly);
    } else {
      g.drawPolygon(poly);
    }
    g.translate(-x, -y);
  }
}

class JComponentTableCellRenderer implements TableCellRenderer {
  public Component getTableCellRendererComponent(JTable table, Object value,
      boolean isSelected, boolean hasFocus, int row, int column) {
    return (JComponent) value;
  }
}

           
         
    
  

Related examples in the same category

1.	Combine TableModel and ColumModel
2.	JTable with a custom column model
3.	A row header column with the TableColumnModel
4.	Install Table Column to TableColumnModel
5.	Swing Table Column ToolTip Sample
6.	Table ColumnModel and TableColumnModelListener
7.	Table Headerless Sample
8.	Multiline table header
9.	Row Number Table Header
10.	Frozen Column Table Header
11.	Packing a Column of a JTable Component according to the header text
12.	Packing a Column of a JTable Component according to the row data
13.	Set column width based on cell renderer
14.	Set table column auto-resize off
15.	Get the columns from TableColumnModel in the order that they appear in the view
16.	Get column count
17.	Returns the TableColumn associated with the specified column index in the model
18.	Setting the Width of a Column in a JTable Component
19.	Disable auto resizing, Set the first visible column to 100 pixels wide
20.	Setting the Column Resize Mode of a JTable Component: Disable auto resizing
21.	When the width of a column is changed, the width of the right-most column is changed
22.	When the width of a column is changed, all columns to the right are resized
23.	When the width of a column is changed, only the columns to the left and right of the margin change
24.	When the width of a column is changed, the widths of all columns are changed
25.	Locking the Width of a Column in a JTable Component
26.	This program demonstrates how to work with rows and columns in a table.