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jlechner |
/* BasicRadioButtonUI.java
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Copyright (C) 2002, 2004 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package javax.swing.plaf.basic;
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import java.awt.Color;
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import java.awt.Dimension;
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import java.awt.Font;
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import java.awt.Graphics;
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import java.awt.Rectangle;
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import javax.swing.AbstractButton;
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import javax.swing.Icon;
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import javax.swing.JComponent;
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import javax.swing.SwingUtilities;
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import javax.swing.UIManager;
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import javax.swing.plaf.ComponentUI;
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/**
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* The BasicLookAndFeel UI implementation for
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* {@link javax.swing.JRadioButton}s.
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*/
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public class BasicRadioButtonUI extends BasicToggleButtonUI
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{
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/**
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* The default icon for JRadioButtons. The default icon displays the usual
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* RadioButton and is sensible to the selection state of the button,
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* and can be used both as normal icon as well as selectedIcon.
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*/
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protected Icon icon;
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/**
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* Creates and returns a new instance of <code>BasicRadioButtonUI</code>.
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*
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* @return a new instance of <code>BasicRadioButtonUI</code>
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*/
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public static ComponentUI createUI(final JComponent c) {
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return new BasicRadioButtonUI();
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}
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/**
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* Creates a new instance of <code>BasicButtonUI</code>.
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*/
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public BasicRadioButtonUI()
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{
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icon = getDefaultIcon();
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}
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/**
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* Installs defaults from the Look & Feel table on the specified
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* button.
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*
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* @param b the button on which to install the defaults
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*/
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protected void installDefaults(AbstractButton b)
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{
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super.installDefaults(b);
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if (b.getIcon() == null)
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b.setIcon(icon);
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if (b.getSelectedIcon() == null)
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b.setSelectedIcon(icon);
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if (b.getDisabledIcon() == null)
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b.setDisabledIcon(icon);
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if (b.getDisabledSelectedIcon() == null)
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b.setDisabledSelectedIcon(icon);
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}
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/**
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* Returns the prefix used for UIDefaults properties. This is
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* <code>RadioButton</code> in this case.
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*
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* @return the prefix used for UIDefaults properties
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*/
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protected String getPropertyPrefix()
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{
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return "RadioButton.";
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}
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/**
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* Returns the default icon for JRadioButtons.
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* The default icon displays the usual
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* RadioButton and is sensible to the selection state of the button,
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* and can be used both as normal icon as well as selectedIcon.
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*
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* @return the default icon for JRadioButtons
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*/
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public Icon getDefaultIcon()
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{
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return UIManager.getIcon(getPropertyPrefix() + "icon");
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}
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/**
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* Paints the RadioButton.
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*
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* @param g the Graphics context to paint with
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* @param c the button to paint
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*/
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public void paint(Graphics g, JComponent c)
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{
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AbstractButton b = (AbstractButton) c;
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Rectangle tr = new Rectangle();
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Rectangle ir = new Rectangle();
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Rectangle vr = new Rectangle();
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Font f = c.getFont();
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g.setFont(f);
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Icon currentIcon = null;
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if (b.isSelected() && b.isEnabled())
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currentIcon = b.getSelectedIcon();
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else if (!b.isSelected() && b.isEnabled())
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currentIcon = b.getIcon();
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else if (b.isSelected() && !b.isEnabled())
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currentIcon = b.getDisabledSelectedIcon();
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else // (!b.isSelected() && !b.isEnabled())
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currentIcon = b.getDisabledIcon();
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SwingUtilities.calculateInnerArea(b, vr);
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String text = SwingUtilities.layoutCompoundLabel
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(c, g.getFontMetrics(f), b.getText(), currentIcon,
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b.getVerticalAlignment(), b.getHorizontalAlignment(),
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b.getVerticalTextPosition(), b.getHorizontalTextPosition(),
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vr, ir, tr, b.getIconTextGap() + defaultTextShiftOffset);
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if (currentIcon != null)
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{
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currentIcon.paintIcon(c, g, ir.x, ir.y);
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}
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if (text != null)
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paintText(g, b, tr, text);
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// TODO: Figure out what is the size parameter?
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if (b.hasFocus() && b.isFocusPainted() && b.isEnabled())
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paintFocus(g, tr, null);
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}
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/**
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* Paints the focus indicator for JRadioButtons.
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*
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* @param g the graphics context
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* @param tr the rectangle for the text label
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* @param size the size (??)
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*/
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// TODO: Figure out what for is the size parameter.
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protected void paintFocus(Graphics g, Rectangle tr, Dimension size)
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{
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Color focusColor = UIManager.getColor(getPropertyPrefix() + ".focus");
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Color saved = g.getColor();
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g.setColor(focusColor);
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g.drawRect(tr.x, tr.y, tr.width, tr.height);
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g.setColor(saved);
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}
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}
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