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1: /* BasicRadioButtonUI.java 2: Copyright (C) 2002, 2004, 2006, 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.basic; 40: 41: import java.awt.Color; 42: import java.awt.Dimension; 43: import java.awt.Font; 44: import java.awt.Graphics; 45: import java.awt.Insets; 46: import java.awt.Rectangle; 47: 48: import javax.swing.AbstractButton; 49: import javax.swing.ButtonModel; 50: import javax.swing.Icon; 51: import javax.swing.JComponent; 52: import javax.swing.SwingUtilities; 53: import javax.swing.UIManager; 54: import javax.swing.plaf.ComponentUI; 55: 56: /** 57: * The BasicLookAndFeel UI implementation for 58: * {@link javax.swing.JRadioButton}s. 59: */ 60: public class BasicRadioButtonUI extends BasicToggleButtonUI 61: { 62: /** 63: * The default icon for JRadioButtons. The default icon displays the usual 64: * RadioButton and is sensible to the selection state of the button, 65: * and can be used both as normal icon as well as selectedIcon. 66: */ 67: protected Icon icon; 68: 69: /** 70: * Creates and returns a new instance of <code>BasicRadioButtonUI</code>. 71: * 72: * @return a new instance of <code>BasicRadioButtonUI</code> 73: */ 74: public static ComponentUI createUI(final JComponent c) 75: { 76: return new BasicRadioButtonUI(); 77: } 78: 79: /** 80: * Creates a new instance of <code>BasicButtonUI</code>. 81: */ 82: public BasicRadioButtonUI() 83: { 84: icon = getDefaultIcon(); 85: } 86: 87: /** 88: * Installs defaults from the Look & Feel table on the specified 89: * button. 90: * 91: * @param b the button on which to install the defaults 92: */ 93: protected void installDefaults(AbstractButton b) 94: { 95: super.installDefaults(b); 96: } 97: 98: /** 99: * Returns the prefix used for UIDefaults properties. This is 100: * <code>RadioButton</code> in this case. 101: * 102: * @return the prefix used for UIDefaults properties 103: */ 104: protected String getPropertyPrefix() 105: { 106: return "RadioButton."; 107: } 108: 109: /** 110: * Returns the default icon for JRadioButtons. 111: * The default icon displays the usual 112: * RadioButton and is sensible to the selection state of the button, 113: * and can be used both as normal icon as well as selectedIcon. 114: * 115: * @return the default icon for JRadioButtons 116: */ 117: public Icon getDefaultIcon() 118: { 119: return UIManager.getIcon(getPropertyPrefix() + "icon"); 120: } 121: 122: /** 123: * Paints the RadioButton. 124: * 125: * @param g the Graphics context to paint with 126: * @param c the button to paint 127: */ 128: public void paint(Graphics g, JComponent c) 129: { 130: AbstractButton b = (AbstractButton) c; 131: 132: Rectangle tr = new Rectangle(); 133: Rectangle ir = new Rectangle(); 134: Rectangle vr = new Rectangle(); 135: 136: Font f = c.getFont(); 137: 138: g.setFont(f); 139: 140: ButtonModel m = b.getModel(); 141: // FIXME: Do a filtering on any customized icon if the following property 142: // is set. 143: boolean enabled = b.isEnabled(); 144: 145: Icon currentIcon = b.getIcon(); 146: 147: if (currentIcon == null) 148: { 149: currentIcon = getDefaultIcon(); 150: } 151: 152: SwingUtilities.calculateInnerArea(b, vr); 153: String text = SwingUtilities.layoutCompoundLabel(c, g.getFontMetrics(f), 154: b.getText(), currentIcon, 155: b.getVerticalAlignment(), b.getHorizontalAlignment(), 156: b.getVerticalTextPosition(), b.getHorizontalTextPosition(), 157: vr, ir, tr, b.getIconTextGap() + defaultTextShiftOffset); 158: 159: currentIcon.paintIcon(c, g, ir.x, ir.y); 160: 161: if (text != null) 162: paintText(g, b, tr, text); 163: if (b.hasFocus() && b.isFocusPainted() && m.isEnabled()) 164: paintFocus(g, tr, c.getSize()); 165: } 166: 167: public Dimension getPreferredSize(JComponent c) 168: { 169: // This is basically the same code as in 170: // BasicGraphicsUtils.getPreferredButtonSize() but takes the default icon 171: // property into account. JRadioButton and subclasses always have an icon: 172: // the check box. If the user explicitly changes it with setIcon() that 173: // one will be used for layout calculations and painting instead. 174: // The other icon properties are ignored. 175: AbstractButton b = (AbstractButton) c; 176: 177: Rectangle contentRect; 178: Rectangle viewRect; 179: Rectangle iconRect = new Rectangle(); 180: Rectangle textRect = new Rectangle(); 181: Insets insets = b.getInsets(); 182: 183: Icon i = b.getIcon(); 184: if (i == null) 185: i = getDefaultIcon(); 186: 187: viewRect = new Rectangle(); 188: 189: SwingUtilities.layoutCompoundLabel( 190: b, // for the component orientation 191: b.getFontMetrics(b.getFont()), 192: b.getText(), 193: i, 194: b.getVerticalAlignment(), 195: b.getHorizontalAlignment(), 196: b.getVerticalTextPosition(), 197: b.getHorizontalTextPosition(), 198: viewRect, iconRect, textRect, 199: defaultTextIconGap + defaultTextShiftOffset); 200: 201: contentRect = textRect.union(iconRect); 202: 203: return new Dimension(insets.left 204: + contentRect.width 205: + insets.right + b.getHorizontalAlignment(), 206: insets.top 207: + contentRect.height 208: + insets.bottom); 209: } 210: 211: /** 212: * Paints the focus indicator for JRadioButtons. 213: * 214: * @param g the graphics context 215: * @param tr the rectangle for the text label 216: * @param size the size of the <code>JRadioButton</code> component. 217: */ 218: protected void paintFocus(Graphics g, Rectangle tr, Dimension size) 219: { 220: Color focusColor = UIManager.getColor(getPropertyPrefix() + ".focus"); 221: Color saved = g.getColor(); 222: g.setColor(focusColor); 223: g.drawRect(tr.x, tr.y, tr.width, tr.height); 224: g.setColor(saved); 225: } 226: }