Swing/ToolButtonPopup のバックアップ差分(No.8)

  • 追加された行はこの色です。
  • 削除された行はこの色です。
TITLE:JToggleButtonからポップアップメニューを開く
#navi(../)
RIGHT:Posted by [[aterai]] at 2006-07-10
*JToggleButtonからポップアップメニューを開く [#e15ce510]
Posted by [[terai]] at 2006-07-10

#contents

**概要 [#sd52e2d8]
クリックするとポップアップメニューを表示するJToggleButtonを作成し、これをツールバーに追加します。

-&jnlp;
-&jar;
-&zip;

#screenshot
//#screenshot
#ref(http://lh4.ggpht.com/_9Z4BYR88imo/TQTVg5xIBaI/AAAAAAAAAnw/ds2ybXI2lUE/s800/ToolButtonPopup.png)

**サンプルコード [#o01c8911]
#code{{
class MenuArrowIcon implements Icon {
  public void paintIcon(Component c, Graphics g, int x, int y) {
    Graphics2D g2 = (Graphics2D)g;
    g2.setPaint(Color.BLACK);
    g2.translate(x,y);
    g2.drawLine( 2, 3, 6, 3 );
    g2.drawLine( 3, 4, 5, 4 );
    g2.drawLine( 4, 5, 4, 5 );
    g2.translate(-x,-y);
  }
  public int getIconWidth()  { return 9; }
  public int getIconHeight() { return 9; }
}
class MenuToggleButton extends JToggleButton {
  private final Icon i = new MenuArrowIcon();
  public MenuToggleButton(final AbstractAction aa) {
    super(aa);
    this.setFocusPainted(false);
    this.setBorder(BorderFactory.createEmptyBorder(4, 4, 4, 4+i.getIconWidth()));
  private static final Icon i = new MenuArrowIcon();
  public MenuToggleButton() {
    this("", null);
  }
  public MenuToggleButton(Icon icon) {
    this("", icon);
  }
  public MenuToggleButton(String text) {
    this(text, null);
  }
  public MenuToggleButton(String text, Icon icon) {
    super();
    Action a = new AbstractAction(text) {
      public void actionPerformed(ActionEvent ae) {
        MenuToggleButton b = (MenuToggleButton)ae.getSource();
        if(pop!=null) pop.show(b, 0, b.getHeight());
      }
    };
    a.putValue(Action.SMALL_ICON, icon);
    setAction(a);
    setFocusable(false);
    setBorder(BorderFactory.createEmptyBorder(4, 4, 4, 4+i.getIconWidth()));
  }
  protected JPopupMenu pop;
  public void setPopupMenu(final JPopupMenu pop) {
    this.pop = pop;
    pop.addPopupMenuListener(new PopupMenuListener() {
      public void popupMenuCanceled(PopupMenuEvent e) {}
      public void popupMenuWillBecomeVisible(PopupMenuEvent e) {}
      public void popupMenuWillBecomeInvisible(PopupMenuEvent e) {
        setSelected(false);
      }
    });
  }
  public void paintComponent(Graphics g) {
    super.paintComponent(g);
    Dimension dim = getSize();
    Insets ins = getInsets();
    int x = dim.width-ins.right;
    int y = ins.top+(dim.height-ins.top-ins.bottom-i.getIconHeight())/2;
    i.paintIcon(this, g, x, y);
  }
}
}}

**解説 [#i6f6caf9]
上記のサンプルでは、JToggleButtonの右側に余白を設定して、そこに下向きの矢印を上書きしています。

**参考リンク [#f95e2567]
-[[XP Style Icons - Windows Application Icon, Software XP Icons>http://www.icongalore.com/]]
-[http://www.icongalore.com/ XP Style Icons - Windows Application Icon, Software XP Icons]
--アイコン(矢印ではない)を利用しています。
-[[Swing - Swing bug? cannot set width of JToggleButton>http://forums.sun.com/thread.jspa?threadID=791450]]
-[http://forums.sun.com/thread.jspa?threadID=791450 Swing - Swing bug? cannot set width of JToggleButton]

**コメント [#h4a49a4d]
#comment