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1: /* MetalButtonUI.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.JButton; 49: import javax.swing.JComponent; 50: import javax.swing.UIDefaults; 51: import javax.swing.UIManager; 52: import javax.swing.plaf.ComponentUI; 53: import javax.swing.plaf.UIResource; 54: import javax.swing.plaf.basic.BasicButtonListener; 55: import javax.swing.plaf.basic.BasicButtonUI; 56: 57: /** 58: * A UI delegate for the {@link JButton} component. 59: * 60: * @author Roman Kennke (roman@kennke.org) 61: */ 62: public class MetalButtonUI 63: extends BasicButtonUI 64: { 65: 66: /** The color used to draw the focus rectangle around the text and/or icon. */ 67: protected Color focusColor; 68: 69: /** The background color for the button when it is pressed. */ 70: protected Color selectColor; 71: 72: /** The color for disabled button labels. */ 73: protected Color disabledTextColor; 74: 75: /** 76: * Creates a new instance. 77: */ 78: public MetalButtonUI() 79: { 80: super(); 81: UIDefaults def = UIManager.getLookAndFeelDefaults(); 82: focusColor = def.getColor(getPropertyPrefix() + "focus"); 83: selectColor = def.getColor(getPropertyPrefix() + "select"); 84: disabledTextColor = def.getColor(getPropertyPrefix() + "disabledText"); 85: } 86: 87: /** 88: * Returns the color for the focus border. 89: * 90: * @return the color for the focus border 91: */ 92: protected Color getFocusColor() 93: { 94: return focusColor; 95: } 96: 97: /** 98: * Returns the color that indicates a selected button. 99: * 100: * @return the color that indicates a selected button 101: */ 102: protected Color getSelectColor() 103: { 104: return selectColor; 105: } 106: 107: /** 108: * Returns the color for the text label of disabled buttons. 109: * 110: * @return the color for the text label of disabled buttons 111: */ 112: protected Color getDisabledTextColor() 113: { 114: return disabledTextColor; 115: } 116: 117: /** 118: * Returns a UI delegate for the specified component. 119: * 120: * @param c the component (should be a subclass of {@link AbstractButton}). 121: * 122: * @return A new instance of <code>MetalButtonUI</code>. 123: */ 124: public static ComponentUI createUI(JComponent c) { 125: return new MetalButtonUI(); 126: } 127: 128: /** 129: * Installs the default settings for the specified button. 130: * 131: * @param button the button. 132: * 133: * @see #uninstallDefaults(AbstractButton) 134: */ 135: public void installDefaults(AbstractButton button) 136: { 137: super.installDefaults(button); 138: if (button.isRolloverEnabled()) 139: { 140: if (button.getBorder() instanceof UIResource) 141: button.setBorder(MetalBorders.getRolloverBorder()); 142: } 143: } 144: 145: /** 146: * Removes the defaults added by {@link #installDefaults(AbstractButton)}. 147: */ 148: public void uninstallDefaults(AbstractButton button) 149: { 150: super.uninstallDefaults(button); 151: if (button.getBorder() instanceof UIResource) 152: button.setBorder(null); 153: } 154: 155: /** 156: * Returns a button listener for the specified button. 157: * 158: * @param button the button. 159: * 160: * @return A button listener. 161: */ 162: protected BasicButtonListener createButtonListener(AbstractButton button) 163: { 164: return new MetalButtonListener(button); 165: } 166: 167: /** 168: * Paints the background of the button to indicate that it is in the "pressed" 169: * state. 170: * 171: * @param g the graphics context. 172: * @param b the button. 173: */ 174: protected void paintButtonPressed(Graphics g, AbstractButton b) 175: { 176: if (b.isContentAreaFilled()) 177: { 178: Rectangle area = b.getVisibleRect(); 179: g.setColor(selectColor); 180: g.fillRect(area.x, area.y, area.width, area.height); 181: } 182: } 183: 184: /** 185: * Paints the focus rectangle around the button text and/or icon. 186: * 187: * @param g the graphics context. 188: * @param b the button. 189: * @param viewRect the button bounds. 190: * @param textRect the text bounds. 191: * @param iconRect the icon bounds. 192: */ 193: protected void paintFocus(Graphics g, AbstractButton b, Rectangle viewRect, 194: Rectangle textRect, Rectangle iconRect) { 195: if (b.hasFocus() && b.isFocusPainted()) 196: { 197: Color savedColor = g.getColor(); 198: g.setColor(getFocusColor()); 199: Rectangle focusRect = iconRect.union(textRect); 200: g.drawRect(focusRect.x - 1, focusRect.y - 1, 201: focusRect.width + 1, focusRect.height + 1); 202: g.setColor(savedColor); 203: } 204: } 205: 206: /** 207: * Paints the button text. 208: * 209: * @param g the graphics context. 210: * @param c the button. 211: * @param textRect the text bounds. 212: * @param text the text to display. 213: */ 214: protected void paintText(Graphics g, JComponent c, Rectangle textRect, 215: String text) 216: { 217: AbstractButton b = (AbstractButton) c; 218: Font f = b.getFont(); 219: g.setFont(f); 220: FontMetrics fm = g.getFontMetrics(f); 221: 222: if (b.isEnabled()) 223: { 224: g.setColor(b.getForeground()); 225: g.drawString(text, textRect.x, textRect.y + fm.getAscent()); 226: } 227: else 228: { 229: g.setColor(getDisabledTextColor()); 230: g.drawString(text, textRect.x, textRect.y + fm.getAscent()); 231: } 232: } 233: }
GNU Classpath (0.19) |