sashka, Картинки ч-з ...setIcon(...), а плавный переход можно примерно в таком ключе:
| Код |
import java.awt.*;
import javax.swing.*;
import javax.swing.plaf.PopupMenuUI;
/**
* JMenu with gradient background.
* This implementstion shows only the idea of how to do such tasks.
* @author Alexander Kabanov
*/
public class JGradientMenu extends JMenu {
private Color topLeftColor;
private Color bottomRightColor;
public JGradientMenu(String name, Color topLeftColor, Color bottomRightColor) {
super(name);
this.topLeftColor = topLeftColor;
this.bottomRightColor = bottomRightColor;
getPopupMenu().setUI(new GradientPopupMenuUI());
}
public JMenuItem add(JMenuItem menuItem) {
menuItem.setOpaque(false);
return super.add(menuItem);
}
private class GradientPopupMenuUI extends PopupMenuUI {
public void paint(Graphics g, JComponent c) {
Graphics2D graphics = (Graphics2D) g;
Paint paint = new GradientPaint(0, 0, topLeftColor,
c.getWidth(), c.getHeight(), bottomRightColor);
graphics.setPaint(paint);
graphics.fillRect(0, 0, c.getWidth(), c.getHeight());
super.paint(g, c);
}
}
/**
* Test starter
*/
public static void main(String[] args) {
JMenuBar menuBar = new JMenuBar();
JMenu menu = new JGradientMenu("Colours", Color.YELLOW, Color.CYAN);
menuBar.add(menu);
String[] menues = {"First", "Second", "Third", "Fourth", "Fifth"};
for (String name : menues) {
menu.add(new JMenuItem(name));
}
JFrame testFrame = new JFrame("Gradient Menu Test Frame");
testFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
testFrame.setSize(300, 200);
testFrame.setJMenuBar(menuBar);
testFrame.setVisible(true);
}
}
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Показана только идея. Это далеко не универсальный вариант  |