001    /* MetalRadioButtonUI.java
002       Copyright (C) 2005, 2006, Free Software Foundation, Inc.
003    
004    This file is part of GNU Classpath.
005    
006    GNU Classpath is free software; you can redistribute it and/or modify
007    it under the terms of the GNU General Public License as published by
008    the Free Software Foundation; either version 2, or (at your option)
009    any later version.
010    
011    GNU Classpath is distributed in the hope that it will be useful, but
012    WITHOUT ANY WARRANTY; without even the implied warranty of
013    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014    General Public License for more details.
015    
016    You should have received a copy of the GNU General Public License
017    along with GNU Classpath; see the file COPYING.  If not, write to the
018    Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
019    02110-1301 USA.
020    
021    Linking this library statically or dynamically with other modules is
022    making a combined work based on this library.  Thus, the terms and
023    conditions of the GNU General Public License cover the whole
024    combination.
025    
026    As a special exception, the copyright holders of this library give you
027    permission to link this library with independent modules to produce an
028    executable, regardless of the license terms of these independent
029    modules, and to copy and distribute the resulting executable under
030    terms of your choice, provided that you also meet, for each linked
031    independent module, the terms and conditions of the license of that
032    module.  An independent module is a module which is not derived from
033    or based on this library.  If you modify this library, you may extend
034    this exception to your version of the library, but you are not
035    obligated to do so.  If you do not wish to do so, delete this
036    exception statement from your version. */
037    
038    
039    package javax.swing.plaf.metal;
040    
041    import java.awt.Color;
042    import java.awt.Dimension;
043    import java.awt.Graphics;
044    import java.awt.Rectangle;
045    
046    import javax.swing.AbstractButton;
047    import javax.swing.JComponent;
048    import javax.swing.JRadioButton;
049    import javax.swing.UIManager;
050    import javax.swing.plaf.ComponentUI;
051    import javax.swing.plaf.basic.BasicRadioButtonUI;
052    
053    
054    /**
055     * A UI delegate for the {@link JRadioButton} component.
056     */
057    public class MetalRadioButtonUI
058      extends BasicRadioButtonUI
059    {
060    
061      /** Used to draw the focus rectangle. */
062      protected Color focusColor;
063    
064      /** Used to fill the icon when the button is pressed. */
065      protected Color selectColor;
066    
067      /** Used to draw disabled text. */
068      protected Color disabledTextColor;
069    
070      /**
071       * Constructs a new instance of <code>MetalRadioButtonUI</code>.
072       */
073      public MetalRadioButtonUI()
074      {
075        super();
076      }
077    
078      /**
079       * Returns a new instance of <code>MetalRadioButtonUI</code>.
080       *
081       * @param component the component for which we return an UI instance
082       *
083       * @return A new instance of <code>MetalRadioButtonUI</code>.
084       */
085      public static ComponentUI createUI(JComponent component)
086      {
087        return new MetalRadioButtonUI();
088      }
089    
090      /**
091       * Sets the default values for the specified button.
092       *
093       * @param b  the button.
094       */
095      public void installDefaults(AbstractButton b)
096      {
097        super.installDefaults(b);
098        String prefix = getPropertyPrefix();
099        disabledTextColor = UIManager.getColor(prefix + "disabledText");
100        focusColor = UIManager.getColor(prefix + "focus");
101        selectColor = UIManager.getColor(prefix + "select");
102      }
103    
104      /**
105       * Clears any defaults set in the installDefaults() method.
106       *
107       * @param b  the {@link JRadioButton}.
108       */
109      protected void uninstallDefaults(AbstractButton b)
110      {
111        super.uninstallDefaults(b);
112        disabledTextColor = null;
113        focusColor = null;
114        selectColor = null;
115      }
116    
117      /**
118       * Returns the color used to fill the {@link JRadioButton}'s icon when the
119       * button is pressed.  The default color is obtained from the
120       * {@link UIManager} defaults via an entry with the key
121       * <code>RadioButton.select</code>.
122       *
123       * @return The select color.
124       */
125      protected Color getSelectColor()
126      {
127        return selectColor;
128      }
129    
130      /**
131       * Returns the color for the {@link JRadioButton}'s text when the button is
132       * disabled.  The default color is obtained from the {@link UIManager}
133       * defaults via an entry with the key <code>RadioButton.disabledText</code>.
134       *
135       * @return The disabled text color.
136       */
137      protected Color getDisabledTextColor()
138      {
139        return disabledTextColor;
140      }
141    
142      /**
143       * Returns the color used to draw the focus rectangle when the
144       * {@link JRadioButton} has the focus.  The default color is obtained from
145       * the {@link UIManager} defaults via an entry with the key
146       * <code>RadioButton.focus</code>.
147       *
148       * @return The color used to draw the focus rectangle.
149       *
150       * @see #paintFocus(Graphics, Rectangle, Dimension)
151       */
152      protected Color getFocusColor()
153      {
154        return focusColor;
155      }
156    
157      /**
158       * Paints the {@link JRadioButton}.
159       *
160       * @param g  the graphics device.
161       * @param c  the component (an instance of {@link JRadioButton}).
162       */
163      public void paint(Graphics g, JComponent c)
164      {
165        super.paint(g, c);
166        // FIXME:  disabled text isn't being drawn correctly, it's possible that
167        // it could be done here...
168      }
169    
170      /**
171       * Paints the focus rectangle for the {@link JRadioButton}.
172       *
173       * @param g  the graphics device.
174       * @param t  the bounding rectangle for the text.
175       * @param d  ???
176       */
177      protected void paintFocus(Graphics g, Rectangle t, Dimension d)
178      {
179        g.setColor(focusColor);
180        g.drawRect(t.x - 1, t.y - 1, t.width + 1, t.height + 1);
181      }
182    
183    }