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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.Color; 42: import java.awt.Dimension; 43: import java.awt.Font; 44: import java.awt.Graphics; 45: import java.awt.Rectangle; 46: 47: import javax.swing.AbstractButton; 48: import javax.swing.Icon; 49: import javax.swing.JComponent; 50: import javax.swing.SwingUtilities; 51: import javax.swing.UIManager; 52: import javax.swing.plaf.ComponentUI; 53: 54: /** 55: * The BasicLookAndFeel UI implementation for 56: * {@link javax.swing.JRadioButton}s. 57: */ 58: public class BasicRadioButtonUI extends BasicToggleButtonUI 59: { 60: /** 61: * The default icon for JRadioButtons. The default icon displays the usual 62: * RadioButton and is sensible to the selection state of the button, 63: * and can be used both as normal icon as well as selectedIcon. 64: */ 65: protected Icon icon; 66: 67: /** 68: * Creates and returns a new instance of <code>BasicRadioButtonUI</code>. 69: * 70: * @return a new instance of <code>BasicRadioButtonUI</code> 71: */ 72: public static ComponentUI createUI(final JComponent c) { 73: return new BasicRadioButtonUI(); 74: } 75: 76: /** 77: * Creates a new instance of <code>BasicButtonUI</code>. 78: */ 79: public BasicRadioButtonUI() 80: { 81: icon = getDefaultIcon(); 82: } 83: 84: /** 85: * Installs defaults from the Look & Feel table on the specified 86: * button. 87: * 88: * @param b the button on which to install the defaults 89: */ 90: protected void installDefaults(AbstractButton b) 91: { 92: super.installDefaults(b); 93: if (b.getIcon() == null) 94: b.setIcon(icon); 95: if (b.getSelectedIcon() == null) 96: b.setSelectedIcon(icon); 97: if (b.getDisabledIcon() == null) 98: b.setDisabledIcon(icon); 99: if (b.getDisabledSelectedIcon() == null) 100: b.setDisabledSelectedIcon(icon); 101: } 102: 103: /** 104: * Returns the prefix used for UIDefaults properties. This is 105: * <code>RadioButton</code> in this case. 106: * 107: * @return the prefix used for UIDefaults properties 108: */ 109: protected String getPropertyPrefix() 110: { 111: return "RadioButton."; 112: } 113: 114: /** 115: * Returns the default icon for JRadioButtons. 116: * The default icon displays the usual 117: * RadioButton and is sensible to the selection state of the button, 118: * and can be used both as normal icon as well as selectedIcon. 119: * 120: * @return the default icon for JRadioButtons 121: */ 122: public Icon getDefaultIcon() 123: { 124: return UIManager.getIcon(getPropertyPrefix() + "icon"); 125: } 126: 127: /** 128: * Paints the RadioButton. 129: * 130: * @param g the Graphics context to paint with 131: * @param c the button to paint 132: */ 133: public void paint(Graphics g, JComponent c) 134: { 135: AbstractButton b = (AbstractButton) c; 136: 137: Rectangle tr = new Rectangle(); 138: Rectangle ir = new Rectangle(); 139: Rectangle vr = new Rectangle(); 140: 141: Font f = c.getFont(); 142: 143: g.setFont(f); 144: 145: Icon currentIcon = null; 146: if (b.isSelected() && b.isEnabled()) 147: currentIcon = b.getSelectedIcon(); 148: else if (!b.isSelected() && b.isEnabled()) 149: currentIcon = b.getIcon(); 150: else if (b.isSelected() && !b.isEnabled()) 151: currentIcon = b.getDisabledSelectedIcon(); 152: else // (!b.isSelected() && !b.isEnabled()) 153: currentIcon = b.getDisabledIcon(); 154: 155: SwingUtilities.calculateInnerArea(b, vr); 156: String text = SwingUtilities.layoutCompoundLabel 157: (c, g.getFontMetrics(f), b.getText(), currentIcon, 158: b.getVerticalAlignment(), b.getHorizontalAlignment(), 159: b.getVerticalTextPosition(), b.getHorizontalTextPosition(), 160: vr, ir, tr, b.getIconTextGap() + defaultTextShiftOffset); 161: 162: if (currentIcon != null) 163: { 164: currentIcon.paintIcon(c, g, ir.x, ir.y); 165: } 166: if (text != null) 167: paintText(g, b, tr, text); 168: // TODO: Figure out what is the size parameter? 169: if (b.hasFocus() && b.isFocusPainted() && b.isEnabled()) 170: paintFocus(g, tr, null); 171: } 172: 173: /** 174: * Paints the focus indicator for JRadioButtons. 175: * 176: * @param g the graphics context 177: * @param tr the rectangle for the text label 178: * @param size the size (??) 179: */ 180: // TODO: Figure out what for is the size parameter. 181: protected void paintFocus(Graphics g, Rectangle tr, Dimension size) 182: { 183: Color focusColor = UIManager.getColor(getPropertyPrefix() + ".focus"); 184: Color saved = g.getColor(); 185: g.setColor(focusColor); 186: g.drawRect(tr.x, tr.y, tr.width, tr.height); 187: g.setColor(saved); 188: } 189: }
GNU Classpath (0.20) |