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.UIManager;
  50: import javax.swing.plaf.ComponentUI;
  51: import javax.swing.plaf.basic.BasicRadioButtonUI;
  52: 
  53: 
  54: /**
  55:  * A UI delegate for the {@link JRadioButton} component.
  56:  */
  57: public class MetalRadioButtonUI
  58:   extends BasicRadioButtonUI
  59: {
  60: 
  61:   /** Used to draw the focus rectangle. */
  62:   protected Color focusColor;
  63:   
  64:   /** Used to fill the icon when the button is pressed. */
  65:   protected Color selectColor;
  66:   
  67:   /** Used to draw disabled text. */
  68:   protected Color disabledTextColor;
  69:   
  70:   /**
  71:    * Constructs a new instance of <code>MetalRadioButtonUI</code>.
  72:    */
  73:   public MetalRadioButtonUI()
  74:   {
  75:     super();
  76:   }
  77: 
  78:   /**
  79:    * Returns a new instance of <code>MetalRadioButtonUI</code>.
  80:    *
  81:    * @param component the component for which we return an UI instance
  82:    *
  83:    * @return A new instance of <code>MetalRadioButtonUI</code>.
  84:    */
  85:   public static ComponentUI createUI(JComponent component)
  86:   {
  87:     return new MetalRadioButtonUI();
  88:   }
  89:   
  90:   /**
  91:    * Sets the default values for the specified button.
  92:    * 
  93:    * @param b  the button.
  94:    */
  95:   public void installDefaults(AbstractButton b)
  96:   {
  97:     super.installDefaults(b);
  98:     disabledTextColor = UIManager.getColor("RadioButton.disabledText");
  99:     focusColor = UIManager.getColor("RadioButton.focus");
 100:     selectColor = UIManager.getColor("RadioButton.select");
 101:   }
 102:   
 103:   /**
 104:    * Clears any defaults set in the installDefaults() method.
 105:    * 
 106:    * @param b  the {@link JRadioButton}.
 107:    */
 108:   protected void uninstallDefaults(AbstractButton b)
 109:   {
 110:     super.uninstallDefaults(b);
 111:     disabledTextColor = null;
 112:     focusColor = null;
 113:     selectColor = null;
 114:   }
 115:   
 116:   /**
 117:    * Returns the color used to fill the {@link JRadioButton}'s icon when the
 118:    * button is pressed.  The default color is obtained from the 
 119:    * {@link UIManager} defaults via an entry with the key 
 120:    * <code>RadioButton.select</code>.
 121:    * 
 122:    * @return The select color.
 123:    */
 124:   protected Color getSelectColor()
 125:   {
 126:     return selectColor;    
 127:   }
 128:   
 129:   /**
 130:    * Returns the color for the {@link JRadioButton}'s text when the button is
 131:    * disabled.  The default color is obtained from the {@link UIManager}
 132:    * defaults via an entry with the key <code>RadioButton.disabledText</code>.
 133:    * 
 134:    * @return The disabled text color.
 135:    */
 136:   protected Color getDisabledTextColor()
 137:   {
 138:     return disabledTextColor;
 139:   }
 140:   
 141:   /**
 142:    * Returns the color used to draw the focus rectangle when the 
 143:    * {@link JRadioButton} has the focus.  The default color is obtained from 
 144:    * the {@link UIManager} defaults via an entry with the key 
 145:    * <code>RadioButton.focus</code>.
 146:    * 
 147:    * @return The color used to draw the focus rectangle.
 148:    * 
 149:    * @see #paintFocus(Graphics, Rectangle, Dimension)
 150:    */
 151:   protected Color getFocusColor()
 152:   {
 153:     return focusColor;
 154:   }
 155:   
 156:   /**
 157:    * Paints the {@link JRadioButton}.
 158:    * 
 159:    * @param g  the graphics device.
 160:    * @param c  the component (an instance of {@link JRadioButton}).
 161:    */
 162:   public void paint(Graphics g, JComponent c)
 163:   {
 164:     super.paint(g, c);
 165:     // FIXME:  disabled text isn't being drawn correctly, it's possible that
 166:     // it could be done here...
 167:   }
 168:   
 169:   /**
 170:    * Paints the focus rectangle for the {@link JRadioButton}.
 171:    * 
 172:    * @param g  the graphics device.
 173:    * @param t  the bounding rectangle for the text.
 174:    * @param d  ???
 175:    */
 176:   protected void paintFocus(Graphics g, Rectangle t, Dimension d)
 177:   {
 178:     g.setColor(focusColor);
 179:     g.drawRect(t.x - 1, t.y - 1, t.width + 2, t.height + 2);
 180:   }
 181:   
 182: }