Source for javax.swing.plaf.metal.MetalRadioButtonUI

   1: /* MetalRadioButtonUI.java
   2:    Copyright (C) 2005 Free Software Foundation, Inc.
   3: 
   4: This file is part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2, or (at your option)
   9: any later version.
  10: 
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA.
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version. */
  37: 
  38: 
  39: package javax.swing.plaf.metal;
  40: 
  41: import java.awt.Color;
  42: import java.awt.Dimension;
  43: import java.awt.Graphics;
  44: import java.awt.Rectangle;
  45: 
  46: import javax.swing.AbstractButton;
  47: import javax.swing.JComponent;
  48: import javax.swing.JRadioButton;
  49: import javax.swing.UIDefaults;
  50: import javax.swing.UIManager;
  51: import javax.swing.plaf.ComponentUI;
  52: import javax.swing.plaf.basic.BasicRadioButtonUI;
  53: 
  54: 
  55: /**
  56:  * A UI delegate for the {@link JRadioButton} component.
  57:  */
  58: public class MetalRadioButtonUI
  59:   extends BasicRadioButtonUI
  60: {
  61: 
  62:   /** Used to draw the focus rectangle. */
  63:   protected Color focusColor;
  64:   
  65:   /** Used to fill the icon when the button is pressed. */
  66:   protected Color selectColor;
  67:   
  68:   /** Used to draw disabled text. */
  69:   protected Color disabledTextColor;
  70:   
  71:   /**
  72:    * Constructs a new instance of <code>MetalRadioButtonUI</code>.
  73:    */
  74:   public MetalRadioButtonUI()
  75:   {
  76:     super();
  77:   }
  78: 
  79:   /**
  80:    * Returns a new instance of <code>MetalRadioButtonUI</code>.
  81:    *
  82:    * @param component the component for which we return an UI instance
  83:    *
  84:    * @return A new instance of <code>MetalRadioButtonUI</code>.
  85:    */
  86:   public static ComponentUI createUI(JComponent component)
  87:   {
  88:     return new MetalRadioButtonUI();
  89:   }
  90:   
  91:   /**
  92:    * Sets the default values for the specified button.
  93:    * 
  94:    * @param b  the button.
  95:    */
  96:   public void installDefaults(AbstractButton b)
  97:   {
  98:     super.installDefaults(b);
  99:     UIDefaults defaults = UIManager.getLookAndFeelDefaults();
 100:     disabledTextColor = defaults.getColor("RadioButton.disabledText");
 101:     focusColor = defaults.getColor("RadioButton.focus");
 102:     selectColor = defaults.getColor("RadioButton.select");
 103:   }
 104:   
 105:   /**
 106:    * Clears any defaults set in the installDefaults() method.
 107:    * 
 108:    * @param b  the {@link JRadioButton}.
 109:    */
 110:   protected void uninstallDefaults(AbstractButton b)
 111:   {
 112:     super.uninstallDefaults(b);
 113:     disabledTextColor = null;
 114:     focusColor = null;
 115:     selectColor = null;
 116:   }
 117:   
 118:   /**
 119:    * Returns the color used to fill the {@link JRadioButton}'s icon when the
 120:    * button is pressed.  The default color is obtained from the 
 121:    * {@link UIDefaults} via an entry with the key 
 122:    * <code>RadioButton.select</code>.
 123:    * 
 124:    * @return The select color.
 125:    */
 126:   protected Color getSelectColor()
 127:   {
 128:     return selectColor;    
 129:   }
 130:   
 131:   /**
 132:    * Returns the color for the {@link JRadioButton}'s text when the button is
 133:    * disabled.  The default color is obtained from the {@link UIDefaults} via 
 134:    * an entry with the key <code>RadioButton.disabledText</code>.
 135:    * 
 136:    * @return The disabled text color.
 137:    */
 138:   protected Color getDisabledTextColor()
 139:   {
 140:     return disabledTextColor;
 141:   }
 142:   
 143:   /**
 144:    * Returns the color used to draw the focus rectangle when the 
 145:    * {@link JRadioButton} has the focus.  The default color is obtained from 
 146:    * the {@link UIDefaults} via an entry with the key 
 147:    * <code>RadioButton.focus</code>.
 148:    * 
 149:    * @return The color used to draw the focus rectangle.
 150:    * 
 151:    * @see #paintFocus(Graphics, Rectangle, Dimension)
 152:    */
 153:   protected Color getFocusColor()
 154:   {
 155:     return focusColor;
 156:   }
 157:   
 158:   /**
 159:    * Paints the {@link JRadioButton}.
 160:    * 
 161:    * @param g  the graphics device.
 162:    * @param c  the component (an instance of {@link JRadioButton}).
 163:    */
 164:   public void paint(Graphics g, JComponent c)
 165:   {
 166:     super.paint(g, c);
 167:     // FIXME:  disabled text isn't being drawn correctly, it's possible that
 168:     // it could be done here...
 169:   }
 170:   
 171:   /**
 172:    * Paints the focus rectangle for the {@link JRadioButton}.
 173:    * 
 174:    * @param g  the graphics device.
 175:    * @param t  the bounding rectangle for the text.
 176:    * @param d  ???
 177:    */
 178:   protected void paintFocus(Graphics g, Rectangle t, Dimension d)
 179:   {
 180:     g.setColor(focusColor);
 181:     // minus 2 because of line thickness. Prevents border
 182:     // from being cutoff.
 183:     g.drawRect(t.x, t.y, t.width - 2, t.height - 2);
 184:   }
 185:   
 186: }