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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.SwingConstants; 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: focusColor = UIManager.getColor(getPropertyPrefix() + "focus"); 82: selectColor = UIManager.getColor(getPropertyPrefix() + "select"); 83: disabledTextColor = UIManager.getColor(getPropertyPrefix() + "disabledText"); 84: } 85: 86: /** 87: * Returns the color for the focus border. 88: * 89: * @return the color for the focus border 90: */ 91: protected Color getFocusColor() 92: { 93: return focusColor; 94: } 95: 96: /** 97: * Returns the color that indicates a selected button. 98: * 99: * @return the color that indicates a selected button 100: */ 101: protected Color getSelectColor() 102: { 103: return selectColor; 104: } 105: 106: /** 107: * Returns the color for the text label of disabled buttons. 108: * 109: * @return the color for the text label of disabled buttons 110: */ 111: protected Color getDisabledTextColor() 112: { 113: return disabledTextColor; 114: } 115: 116: /** 117: * Returns a UI delegate for the specified component. 118: * 119: * @param c the component (should be a subclass of {@link AbstractButton}). 120: * 121: * @return A new instance of <code>MetalButtonUI</code>. 122: */ 123: public static ComponentUI createUI(JComponent c) { 124: return new MetalButtonUI(); 125: } 126: 127: /** 128: * Installs the default settings for the specified button. 129: * 130: * @param button the button. 131: * 132: * @see #uninstallDefaults(AbstractButton) 133: */ 134: public void installDefaults(AbstractButton button) 135: { 136: super.installDefaults(button); 137: button.setRolloverEnabled(UIManager.getBoolean( 138: getPropertyPrefix() + "rollover")); 139: } 140: 141: /** 142: * Removes the defaults added by {@link #installDefaults(AbstractButton)}. 143: */ 144: public void uninstallDefaults(AbstractButton button) 145: { 146: super.uninstallDefaults(button); 147: button.setRolloverEnabled(false); 148: } 149: 150: /** 151: * Returns a button listener for the specified button. 152: * 153: * @param button the button. 154: * 155: * @return A button listener. 156: */ 157: protected BasicButtonListener createButtonListener(AbstractButton button) 158: { 159: return new MetalButtonListener(button); 160: } 161: 162: /** 163: * Paints the background of the button to indicate that it is in the "pressed" 164: * state. 165: * 166: * @param g the graphics context. 167: * @param b the button. 168: */ 169: protected void paintButtonPressed(Graphics g, AbstractButton b) 170: { 171: if (b.isContentAreaFilled()) 172: { 173: Rectangle area = b.getVisibleRect(); 174: g.setColor(selectColor); 175: g.fillRect(area.x, area.y, area.width, area.height); 176: } 177: } 178: 179: /** 180: * Paints the focus rectangle around the button text and/or icon. 181: * 182: * @param g the graphics context. 183: * @param b the button. 184: * @param viewRect the button bounds. 185: * @param textRect the text bounds. 186: * @param iconRect the icon bounds. 187: */ 188: protected void paintFocus(Graphics g, AbstractButton b, Rectangle viewRect, 189: Rectangle textRect, Rectangle iconRect) { 190: if (b.isEnabled() && b.hasFocus() && b.isFocusPainted()) 191: { 192: Color savedColor = g.getColor(); 193: g.setColor(getFocusColor()); 194: Rectangle focusRect = iconRect.union(textRect); 195: g.drawRect(focusRect.x - 1, focusRect.y, 196: focusRect.width + 1, focusRect.height); 197: g.setColor(savedColor); 198: } 199: } 200: 201: /** 202: * Paints the button text. 203: * 204: * @param g the graphics context. 205: * @param c the button. 206: * @param textRect the text bounds. 207: * @param text the text to display. 208: */ 209: protected void paintText(Graphics g, JComponent c, Rectangle textRect, 210: String text) 211: { 212: AbstractButton b = (AbstractButton) c; 213: Font f = b.getFont(); 214: g.setFont(f); 215: FontMetrics fm = g.getFontMetrics(f); 216: 217: if (b.isEnabled()) 218: { 219: g.setColor(b.getForeground()); 220: g.drawString(text, textRect.x, textRect.y + fm.getAscent()); 221: } 222: else 223: { 224: g.setColor(getDisabledTextColor()); 225: g.drawString(text, textRect.x, textRect.y + fm.getAscent()); 226: } 227: } 228: 229: /** 230: * If the property <code>Button.gradient</code> is set, then a gradient is 231: * painted as background, otherwise the normal superclass behaviour is 232: * called. 233: */ 234: public void update(Graphics g, JComponent c) 235: { 236: AbstractButton b = (AbstractButton) c; 237: if (b.isOpaque() && UIManager.get(getPropertyPrefix() + "gradient") != null 238: && !b.getModel().isPressed() && b.isEnabled()) 239: { 240: MetalUtils.paintGradient(g, 0, 0, c.getWidth(), c.getHeight(), 241: SwingConstants.VERTICAL, 242: getPropertyPrefix() + "gradient"); 243: paint(g, c); 244: } 245: else 246: super.update(g, c); 247: } 248: }
GNU Classpath (0.20) |