自定义带关闭按钮的TabbedPane
package test;import javax.swing.JFrame;import javax.swing.JPanel;import javax.swing.JTabbedPane;import java.awt.Rectangle;import java.awt.Color;import java.awt.event.MouseListener;import java.awt.Component;import javax.swing.Icon;import java.awt.event.MouseEvent;import java.awt.Graphics;/** *自定义带关闭按钮的TabbedPane * @authorXiaoQuan */public class ClosableTabbedPane extends JTabbedPane implements MouseListener { private static final long serialVersionUID = -5154435928212725041L; public ClosableTabbedPane() { super(); addMouseListener(this); } @Override public void addTab(String title, Component component) { super.addTab(title, null, component); } public void addTab(String title, Component component, Icon extraIcon) { super.addTab(title, new CloseTabIcon(), component); } @Override public void mouseClicked(MouseEvent e) { int tabNumber = getUI().tabForCoordinate(this, e.getX(), e.getY()); if (tabNumber < 0) { return; } if (((CloseTabIcon) getIconAt(tabNumber)) != null) { Rectangle rect = ((CloseTabIcon) getIconAt(tabNumber)).getBounds(); if (rect.contains(e.getX(), e.getY())) { this.removeTabAt(tabNumber); } } } public void mouseEntered(MouseEvent e) { } public void mouseExited(MouseEvent e) { } public void mousePressed(MouseEvent e) { } public void mouseReleased(MouseEvent e) { } public static void main(String args[]){ JFrame f =new JFrame(); ClosableTabbedPane closableTabbedPane =new ClosableTabbedPane(); JPanel p1 = new JPanel(); JPanel p2 = new JPanel(); closableTabbedPane.addTab("不带关闭按钮", p1); closableTabbedPane.addTab("带关闭按钮", p2, null); f.getContentPane().add(closableTabbedPane); f.setSize(500,400); f.setVisible(true); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); }}class CloseTabIcon implements Icon { private int x_pos; private int y_pos; private int width; private int height; public CloseTabIcon() { width = 16; height = 16; } @Override public void paintIcon(Component c, Graphics g, int x, int y) { this.x_pos = x; this.y_pos = y; Color col = g.getColor(); g.setColor(Color.RED.darker()); int y_p = y + 2; g.drawLine(x + 1, y_p, x + 12, y_p); g.drawLine(x + 1, y_p + 13, x + 12, y_p + 13); g.drawLine(x, y_p + 1, x, y_p + 12); g.drawLine(x + 13, y_p + 1, x + 13, y_p + 12); g.drawLine(x + 3, y_p + 3, x + 10, y_p + 10); g.drawLine(x + 3, y_p + 4, x + 9, y_p + 10); g.drawLine(x + 4, y_p + 3, x + 10, y_p + 9); g.drawLine(x + 10, y_p + 3, x + 3, y_p + 10); g.drawLine(x + 10, y_p + 4, x + 4, y_p + 10); g.drawLine(x + 9, y_p + 3, x + 3, y_p + 9); g.setColor(col); } @Override public int getIconWidth() { return width; } @Override public int getIconHeight() { return height; } public Rectangle getBounds() { return new Rectangle(x_pos, y_pos, width, height); }}
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