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1: /* BasicRadioButtonUI.java 2: Copyright (C) 2002, 2004 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.Font; 42: import java.awt.Graphics; 43: import java.awt.Rectangle; 44: 45: import javax.swing.AbstractButton; 46: import javax.swing.Icon; 47: import javax.swing.JComponent; 48: import javax.swing.SwingUtilities; 49: import javax.swing.UIDefaults; 50: import javax.swing.UIManager; 51: import javax.swing.plaf.ComponentUI; 52: 53: /** 54: * The BasicLookAndFeel UI implementation for 55: * {@link javax.swing.JRadioButton}s. 56: */ 57: public class BasicRadioButtonUI extends BasicToggleButtonUI 58: { 59: /** 60: * The default icon for JRadioButtons. The default icon displays the usual 61: * RadioButton and is sensible to the selection state of the button, 62: * and can be used both as normal icon as well as selectedIcon. 63: */ 64: protected Icon icon; 65: 66: /** 67: * Creates and returns a new instance of <code>BasicRadioButtonUI</code>. 68: * 69: * @return a new instance of <code>BasicRadioButtonUI</code> 70: */ 71: public static ComponentUI createUI(final JComponent c) { 72: return new BasicRadioButtonUI(); 73: } 74: 75: /** 76: * Creates a new instance of <code>BasicButtonUI</code>. 77: */ 78: public BasicRadioButtonUI() 79: { 80: icon = getDefaultIcon(); 81: } 82: 83: /** 84: * Installs defaults from the Look & Feel table on the specified 85: * button. 86: * 87: * @param b the button on which to install the defaults 88: */ 89: protected void installDefaults(AbstractButton b) 90: { 91: super.installDefaults(b); 92: if (b.getIcon() == null) 93: b.setIcon(icon); 94: if (b.getSelectedIcon() == null) 95: b.setSelectedIcon(icon); 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: UIDefaults defaults = UIManager.getLookAndFeelDefaults(); 120: return defaults.getIcon(getPropertyPrefix() + "icon"); 121: } 122: 123: /** 124: * Paints the RadioButton. 125: * 126: * @param g the Graphics context to paint with 127: * @param c the button to paint 128: */ 129: public void paint(Graphics g, JComponent c) 130: { 131: AbstractButton b = (AbstractButton) c; 132: 133: Rectangle tr = new Rectangle(); 134: Rectangle ir = new Rectangle(); 135: Rectangle vr = new Rectangle(); 136: 137: Font f = c.getFont(); 138: 139: g.setFont(f); 140: 141: Icon currentIcon = null; 142: if (b.isSelected()) 143: currentIcon = b.getSelectedIcon(); 144: else 145: currentIcon = b.getIcon(); 146: 147: SwingUtilities.calculateInnerArea(b, vr); 148: String text = SwingUtilities.layoutCompoundLabel 149: (c, g.getFontMetrics(f), b.getText(), currentIcon, 150: b.getVerticalAlignment(), b.getHorizontalAlignment(), 151: b.getVerticalTextPosition(), b.getHorizontalTextPosition(), 152: vr, ir, tr, b.getIconTextGap() + defaultTextShiftOffset); 153: 154: if (currentIcon != null) 155: { 156: currentIcon.paintIcon(c, g, ir.x, ir.y); 157: } 158: if (text != null) 159: paintText(g, b, tr, text); 160: paintFocus(g, b, vr, tr, ir); 161: } 162: }
GNU Classpath (0.18) |