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1: /* MetalToggleButtonUI.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.Font; 43: import java.awt.FontMetrics; 44: import java.awt.Graphics; 45: import java.awt.Rectangle; 46: 47: import javax.swing.AbstractButton; 48: import javax.swing.ButtonModel; 49: import javax.swing.JComponent; 50: import javax.swing.JToggleButton; 51: import javax.swing.SwingConstants; 52: import javax.swing.SwingUtilities; 53: import javax.swing.UIManager; 54: import javax.swing.plaf.ComponentUI; 55: import javax.swing.plaf.UIResource; 56: import javax.swing.plaf.basic.BasicButtonUI; 57: import javax.swing.plaf.basic.BasicToggleButtonUI; 58: 59: /** 60: * A UI delegate for the {@link JToggleButton} component. 61: */ 62: public class MetalToggleButtonUI 63: extends BasicToggleButtonUI 64: { 65: 66: /** The color for the focus border. */ 67: protected Color focusColor; 68: 69: /** The color that indicates a selected button. */ 70: protected Color selectColor; 71: 72: /** The color for disabled button labels. */ 73: protected Color disabledTextColor; 74: 75: /** 76: * Returns a new instance of <code>MetalToggleButtonUI</code>. 77: * 78: * @param component the component for which we return an UI instance 79: * 80: * @return A new instance of <code>MetalToggleButtonUI</code>. 81: */ 82: public static ComponentUI createUI(JComponent component) 83: { 84: return new MetalToggleButtonUI(); 85: } 86: 87: /** 88: * Constructs a new instance of <code>MetalToggleButtonUI</code>. 89: */ 90: public MetalToggleButtonUI() 91: { 92: super(); 93: } 94: 95: /** 96: * Returns the color for the focus border. 97: * 98: * @return the color for the focus border 99: */ 100: protected Color getFocusColor() 101: { 102: return focusColor; 103: } 104: 105: /** 106: * Returns the color that indicates a selected button. 107: * 108: * @return the color that indicates a selected button 109: */ 110: protected Color getSelectColor() 111: { 112: return selectColor; 113: } 114: 115: /** 116: * Returns the color for the text label of disabled buttons. The value 117: * is initialised in the {@link #installDefaults(AbstractButton)} method 118: * by reading the <code>ToggleButton.disabledText</code> item from the UI 119: * defaults. 120: * 121: * @return The color for the text label of disabled buttons. 122: */ 123: protected Color getDisabledTextColor() 124: { 125: return disabledTextColor; 126: } 127: 128: /** 129: * Updates the button with the defaults for this look and feel. 130: * 131: * @param b the button. 132: */ 133: public void installDefaults(AbstractButton b) 134: { 135: super.installDefaults(b); 136: focusColor = UIManager.getColor(getPropertyPrefix() + "focus"); 137: selectColor = UIManager.getColor(getPropertyPrefix() + "select"); 138: disabledTextColor = UIManager.getColor(getPropertyPrefix() + "disabledText"); 139: } 140: 141: /** 142: * Paints the button background when it is pressed/selected. 143: * 144: * @param g the graphics device. 145: * @param b the button. 146: */ 147: protected void paintButtonPressed(Graphics g, AbstractButton b) 148: { 149: if (b.isContentAreaFilled() && b.isOpaque()) 150: { 151: Color saved = g.getColor(); 152: Rectangle bounds = SwingUtilities.getLocalBounds(b); 153: g.setColor(selectColor); 154: g.fillRect(bounds.x, bounds.y, bounds.width, bounds.height); 155: g.setColor(saved); 156: } 157: } 158: 159: /** 160: * Paints the text for the button. 161: * 162: * As of JDK 1.4 this method is obsolete. 163: * Use {@link BasicButtonUI#paintText(java.awt.Graphics, 164: * javax.swing.AbstractButton, java.awt.Rectangle, java.lang.String)}. 165: * 166: * @param g the graphics device. 167: * @param c the component. 168: * @param textRect the bounds for the text. 169: * @param text the text. 170: * 171: */ 172: protected void paintText(Graphics g, JComponent c, Rectangle textRect, 173: String text) 174: { 175: Font savedFont = g.getFont(); 176: Color savedColor = g.getColor(); 177: g.setFont(c.getFont()); 178: if (c.isEnabled()) 179: g.setColor(c.getForeground()); 180: else 181: g.setColor(disabledTextColor); 182: FontMetrics fm = g.getFontMetrics(c.getFont()); 183: int ascent = fm.getAscent(); 184: g.drawString(text, textRect.x, textRect.y + ascent); 185: g.setFont(savedFont); 186: g.setColor(savedColor); 187: } 188: 189: /** 190: * Draws the focus highlight around the text and icon. 191: * 192: * @param g the graphics device. 193: * @param b the button. 194: */ 195: protected void paintFocus(Graphics g, AbstractButton b, Rectangle viewRect, 196: Rectangle textRect, Rectangle iconRect) 197: { 198: if (!b.hasFocus()) 199: return; 200: Color saved = g.getColor(); 201: g.setColor(focusColor); 202: Rectangle fr = iconRect.union(textRect); 203: g.drawRect(fr.x - 1, fr.y - 1, fr.width + 1, fr.height + 1); 204: g.setColor(saved); 205: } 206: 207: /** 208: * If the property <code>ToggleButton.gradient</code> is set, then a gradient 209: * is painted as background, otherwise the normal superclass behaviour is 210: * called. 211: */ 212: public void update(Graphics g, JComponent c) 213: { 214: AbstractButton b = (AbstractButton) c; 215: ButtonModel m = b.getModel(); 216: if (b.getBackground() instanceof UIResource 217: && b.isContentAreaFilled() 218: && b.isEnabled() && ! m.isArmed() && ! m.isPressed() 219: && UIManager.get(getPropertyPrefix() + "gradient") != null) 220: { 221: MetalUtils.paintGradient(g, 0, 0, c.getWidth(), c.getHeight(), 222: SwingConstants.VERTICAL, 223: getPropertyPrefix() + "gradient"); 224: paint(g, c); 225: } 226: else 227: super.update(g, c); 228: } 229: 230: }