---
category: swing
folder: CheckBoxMenuItemIcon
title: JCheckBoxMenuItemのチェックアイコンを変更する
tags: [JCheckBoxMenuItem, Icon, UIManager]
author: aterai
pubdate: 2009-09-14T14:19:06+09:00
description: JCheckBoxMenuItemのチェックアイコンを変更します。
image: https://lh4.googleusercontent.com/_9Z4BYR88imo/TQTI5TuivhI/AAAAAAAAATg/nfren8EjliA/s800/CheckBoxMenuItemIcon.png
hreflang:
href: https://java-swing-tips.blogspot.com/2009/10/jcheckboxmenuitem-icon.html
lang: en
---
* 概要 [#summary]
`JCheckBoxMenuItem`のチェックアイコンを変更します。
#download(https://lh4.googleusercontent.com/_9Z4BYR88imo/TQTI5TuivhI/AAAAAAAAATg/nfren8EjliA/s800/CheckBoxMenuItemIcon.png)
* サンプルコード [#sourcecode]
#code(link){{
UIManager.put("CheckBoxMenuItem.checkIcon", new Icon() {
@Override public void paintIcon(Component c, Graphics g, int x, int y) {
Graphics2D g2 = (Graphics2D) g.create();
g2.translate(x, y);
ButtonModel m = ((AbstractButton) c).getModel();
g2.setPaint(m.isSelected() ? Color.ORANGE : Color.GRAY);
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g2.fillOval(0, 2, 10, 10);
g2.dispose();
}
@Override public int getIconWidth() {
return 14;
}
@Override public int getIconHeight() {
return 14;
}
});
menu.add(new JCheckBoxMenuItem("checkIcon test"));
}}
* 解説 [#explanation]
- `JCheckBox`のチェックアイコンは、`JCheckBox#setIcon(Icon)`メソッドで変更可能
- `JCheckBox`のチェックアイコンは`JCheckBox#setIcon(Icon)`メソッドで変更可能
- `JCheckBoxMenuItem`はチェックアイコンとは別のアイコンが設定されているため、`setIcon(Icon)`メソッドではなく`UIManager.put("CheckBoxMenuItem.checkIcon", icon)`を使用する必要がある
- `NimbusLookAndFeel`などでは`UIManager.put("CheckBoxMenuItem.checkIcon", icon)`は無効なので`UIDefaults`を使用する必要がある
----
- `NimbusLookAndFeel`などで`JCheckBoxMenuItem`のチェックアイコンを変更する
#code{{
import java.awt.*;
import java.awt.geom.*;
import javax.swing.*;
// JDK 1.6
import com.sun.java.swing.*;
import com.sun.java.swing.plaf.nimbus.*;
// JDK 1.7
// import javax.swing.plaf.nimbus.*;
import javax.swing.plaf.nimbus.*;
class NimbusCheckIconTest {
public JMenuBar createMenuBar() {
JCheckBoxMenuItem cbmi = new JCheckBoxMenuItem("checkIcon test");
UIDefaults d = new UIDefaults();
d.put("CheckBoxMenuItem[Enabled].checkIconPainter",
new MyCheckBoxMenuItemPainter(
MyCheckBoxMenuItemPainter.CHECKICON_ENABLED));
d.put("CheckBoxMenuItem[MouseOver].checkIconPainter",
new MyCheckBoxMenuItemPainter(
MyCheckBoxMenuItemPainter.CHECKICON_MOUSEOVER));
d.put("CheckBoxMenuItem[Enabled+Selected].checkIconPainter",
new MyCheckBoxMenuItemPainter(
MyCheckBoxMenuItemPainter.CHECKICON_ENABLED_SELECTED));
d.put("CheckBoxMenuItem[MouseOver+Selected].checkIconPainter",
new MyCheckBoxMenuItemPainter(
MyCheckBoxMenuItemPainter.CHECKICON_SELECTED_MOUSEOVER));
cbmi.putClientProperty("Nimbus.Overrides", d);
cbmi.putClientProperty("Nimbus.Overrides.InheritDefaults", false);
JMenuBar menuBar = new JMenuBar();
JMenu menu = new JMenu("A Menu");
menuBar.add(menu);
menu.add(new JCheckBoxMenuItem("default"));
menu.add(cbmi);
menuBar.add(menu);
return menuBar;
}
public Container createContentPane() {
JPanel contentPane = new JPanel(new BorderLayout());
contentPane.setOpaque(true);
contentPane.add(new JScrollPane(new JTextArea()));
return contentPane;
}
private static void createAndShowGUI() {
try {
for (UIManager.LookAndFeelInfo laf: UIManager.getInstalledLookAndFeels())
if ("Nimbus".equals(laf.getName()))
UIManager.setLookAndFeel(laf.getClassName());
} catch (Exception e) {
e.printStackTrace();
}
NimbusCheckIconTest demo = new NimbusCheckIconTest();
JFrame f = new JFrame();
f.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
f.setJMenuBar(demo.createMenuBar());
f.setContentPane(demo.createContentPane());
f.setSize(320, 240);
f.setLocationRelativeTo(null);
f.setVisible(true);
}
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
@Override public void run() {
createAndShowGUI();
}
});
}
}
// copy: CheckBoxMenuItemPainter.java
class MyCheckBoxMenuItemPainter extends AbstractRegionPainter {
static final int CHECKICON_ENABLED_SELECTED = 6;
static final int CHECKICON_SELECTED_MOUSEOVER = 7;
static final int CHECKICON_ENABLED = 8;
static final int CHECKICON_MOUSEOVER = 9;
private int state;
private PaintContext ctx;
public MyCheckBoxMenuItemPainter(int state) {
super();
this.state = state;
this.ctx = new AbstractRegionPainter.PaintContext(
new Insets(5, 5, 5, 5), new Dimension(9, 10), false, null, 1.0, 1.0);
}
@Override protected void doPaint(Graphics2D g, JComponent c,
int width, int height, Object[] eckey) {
switch (state) {
case CHECKICON_ENABLED:
paintcheckIconEnabled(g);
break;
case CHECKICON_MOUSEOVER:
paintcheckIconMouseOver(g);
break;
case CHECKICON_ENABLED_SELECTED:
paintcheckIconEnabledAndSelected(g);
break;
case CHECKICON_SELECTED_MOUSEOVER:
paintcheckIconSelectedAndMouseOver(g);
break;
}
}
@Override protected final PaintContext getPaintContext() {
return ctx;
}
private void paintcheckIconEnabled(Graphics2D g) {
g.setPaint(Color.GREEN);
g.drawOval(0, 0, 10, 10);
}
private void paintcheckIconMouseOver(Graphics2D g) {
g.setPaint(Color.PINK);
g.drawOval(0, 0, 10, 10);
}
private void paintcheckIconEnabledAndSelected(Graphics2D g) {
g.setPaint(Color.ORANGE);
g.fillOval(0, 0, 10, 10);
}
private void paintcheckIconSelectedAndMouseOver(Graphics2D g) {
g.setPaint(Color.CYAN);
g.fillOval(0, 0, 10, 10);
}
}
}}
* 参考リンク [#reference]
- [https://docs.oracle.com/javase/jp/8/docs/api/javax/swing/JCheckBoxMenuItem.html JCheckBoxMenuItem (Java Platform SE 8)]
- [[JRadioButtonMenuItemのチェックアイコンを変更する>Swing/RadioButtonMenuItemIcon]]
* コメント [#comment]
#comment
#comment