/jEdit/tags/jedit-4-5-pre1/org/gjt/sp/jedit/gui/RolloverButton.java
Java | 155 lines | 78 code | 15 blank | 62 comment | 2 complexity | 0428a315378f63c01e729c71c647a249 MD5 | raw file
Possible License(s): BSD-3-Clause, AGPL-1.0, Apache-2.0, LGPL-2.0, LGPL-3.0, GPL-2.0, CC-BY-SA-3.0, LGPL-2.1, GPL-3.0, MPL-2.0-no-copyleft-exception, IPL-1.0
- /*
- * RolloverButton.java - Class for buttons that implement rollovers
- * :tabSize=8:indentSize=8:noTabs=false:
- * :folding=explicit:collapseFolds=1:
- *
- * Copyright (C) 2002 Kris Kopicki
- * Portions copyright (C) 2003 Slava Pestov
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
- package org.gjt.sp.jedit.gui;
- //{{{ Imports
- import java.awt.*;
- import java.awt.event.*;
- import javax.swing.*;
- import javax.swing.border.*;
- import javax.swing.plaf.basic.BasicButtonUI;
- import javax.swing.plaf.basic.BasicBorders.ButtonBorder;
- import org.gjt.sp.jedit.OperatingSystem;
- //}}}
- /**
- * If you wish to have rollovers on your buttons, use this class.
- *
- * Unlike the Swing rollover support, this class works outside of
- * <code>JToolBar</code>s, and does not require undocumented client
- * property hacks or JDK1.4-specific API calls.<p>
- *
- * Note: You should not call <code>setBorder()</code> on your buttons,
- * as they probably won't work properly.
- * @version $Id: RolloverButton.java 12504 2008-04-22 23:12:43Z ezust $
- */
- public class RolloverButton extends JButton
- {
- //{{{ RolloverButton constructor
- /**
- * Setup the border (invisible initially)
- */
- public RolloverButton()
- {
- //setContentAreaFilled(true);
- addMouseListener(new MouseOverHandler());
- } //}}}
- //{{{ RolloverButton constructor
- /**
- * Setup the border (invisible initially)
- *
- * @param icon the icon of this button
- */
- public RolloverButton(Icon icon)
- {
- this();
- setIcon(icon);
- } //}}}
- //{{{ updateUI() method
- public void updateUI()
- {
- super.updateUI();
- //setBorder(originalBorder);
- setBorderPainted(false);
- setRequestFocusEnabled(false);
- setMargin(new Insets(1,1,1,1));
- } //}}}
- //{{{ setEnabled() method
- public void setEnabled(boolean b)
- {
- super.setEnabled(b);
- setBorderPainted(false);
- repaint();
- } //}}}
- //{{{ setBorderPainted() method
- public void setBorderPainted(boolean b)
- {
- try
- {
- revalidateBlocked = true;
- super.setBorderPainted(b);
- setContentAreaFilled(b);
- }
- finally
- {
- revalidateBlocked = false;
- }
- } //}}}
- //{{{ revalidate() method
- /**
- * We block calls to revalidate() from a setBorderPainted(), for
- * performance reasons.
- */
- public void revalidate()
- {
- if(!revalidateBlocked)
- super.revalidate();
- } //}}}
- //{{{ paint() method
- public void paint(Graphics g)
- {
- if(isEnabled())
- super.paint(g);
- else
- {
- Graphics2D g2 = (Graphics2D)g;
- g2.setComposite(c);
- super.paint(g2);
- }
- } //}}}
- //{{{ Private members
- private static final AlphaComposite c = AlphaComposite.getInstance(
- AlphaComposite.SRC_OVER, 0.5f);
- private boolean revalidateBlocked;
- //{{{ MouseHandler class
- /**
- * Make the border visible/invisible on rollovers
- */
- class MouseOverHandler extends MouseAdapter
- {
- public void mouseEntered(MouseEvent e)
- {
- setContentAreaFilled(true);
- setBorderPainted(isEnabled());
- }
- public void mouseExited(MouseEvent e)
- {
- setContentAreaFilled(false);
- setBorderPainted(false);
- }
- } //}}}
- //}}}
- }