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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.ButtonModel; 49: import javax.swing.JButton; 50: import javax.swing.JComponent; 51: import javax.swing.SwingConstants; 52: import javax.swing.UIManager; 53: import javax.swing.plaf.ComponentUI; 54: import javax.swing.plaf.UIResource; 55: import javax.swing.plaf.basic.BasicButtonListener; 56: import javax.swing.plaf.basic.BasicButtonUI; 57: 58: /** 59: * A UI delegate for the {@link JButton} component. 60: * 61: * @author Roman Kennke (roman@kennke.org) 62: */ 63: public class MetalButtonUI 64: extends BasicButtonUI 65: { 66: 67: /** The color used to draw the focus rectangle around the text and/or icon. */ 68: protected Color focusColor; 69: 70: /** The background color for the button when it is pressed. */ 71: protected Color selectColor; 72: 73: /** The color for disabled button labels. */ 74: protected Color disabledTextColor; 75: 76: /** 77: * Creates a new instance. 78: */ 79: public MetalButtonUI() 80: { 81: super(); 82: focusColor = UIManager.getColor(getPropertyPrefix() + "focus"); 83: selectColor = UIManager.getColor(getPropertyPrefix() + "select"); 84: disabledTextColor = UIManager.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: button.setRolloverEnabled(UIManager.getBoolean( 139: getPropertyPrefix() + "rollover")); 140: } 141: 142: /** 143: * Removes the defaults added by {@link #installDefaults(AbstractButton)}. 144: */ 145: public void uninstallDefaults(AbstractButton button) 146: { 147: super.uninstallDefaults(button); 148: button.setRolloverEnabled(false); 149: } 150: 151: /** 152: * Returns a button listener for the specified button. 153: * 154: * @param button the button. 155: * 156: * @return A button listener. 157: */ 158: protected BasicButtonListener createButtonListener(AbstractButton button) 159: { 160: return new MetalButtonListener(button); 161: } 162: 163: /** 164: * Paints the background of the button to indicate that it is in the 165: * "pressed" state. 166: * 167: * @param g the graphics context. 168: * @param b the button. 169: */ 170: protected void paintButtonPressed(Graphics g, AbstractButton b) 171: { 172: if (b.isContentAreaFilled()) 173: { 174: Rectangle area = b.getVisibleRect(); 175: g.setColor(selectColor); 176: g.fillRect(area.x, area.y, area.width, area.height); 177: } 178: } 179: 180: /** 181: * Paints the focus rectangle around the button text and/or icon. 182: * 183: * @param g the graphics context. 184: * @param b the button. 185: * @param viewRect the button bounds. 186: * @param textRect the text bounds. 187: * @param iconRect the icon bounds. 188: */ 189: protected void paintFocus(Graphics g, AbstractButton b, Rectangle viewRect, 190: Rectangle textRect, Rectangle iconRect) { 191: if (b.isEnabled() && b.hasFocus() && b.isFocusPainted()) 192: { 193: Color savedColor = g.getColor(); 194: g.setColor(getFocusColor()); 195: Rectangle focusRect = iconRect.union(textRect); 196: g.drawRect(focusRect.x - 1, focusRect.y, 197: focusRect.width + 1, focusRect.height); 198: g.setColor(savedColor); 199: } 200: } 201: 202: /** 203: * Paints the button text. 204: * 205: * @param g the graphics context. 206: * @param c the button. 207: * @param textRect the text bounds. 208: * @param text the text to display. 209: */ 210: protected void paintText(Graphics g, JComponent c, Rectangle textRect, 211: String text) 212: { 213: AbstractButton b = (AbstractButton) c; 214: Font f = b.getFont(); 215: g.setFont(f); 216: FontMetrics fm = g.getFontMetrics(f); 217: 218: if (b.isEnabled()) 219: { 220: g.setColor(b.getForeground()); 221: g.drawString(text, textRect.x, textRect.y + fm.getAscent()); 222: } 223: else 224: { 225: g.setColor(getDisabledTextColor()); 226: g.drawString(text, textRect.x, textRect.y + fm.getAscent()); 227: } 228: } 229: 230: /** 231: * If the property <code>Button.gradient</code> is set, then a gradient is 232: * painted as background, otherwise the normal superclass behaviour is 233: * called. 234: */ 235: public void update(Graphics g, JComponent c) 236: { 237: AbstractButton b = (AbstractButton) c; 238: ButtonModel m = b.getModel(); 239: if (b.isContentAreaFilled() 240: && (UIManager.get(getPropertyPrefix() + "gradient") != null) 241: && ! m.isPressed() && ! m.isArmed() 242: && b.isEnabled() 243: && (b.getBackground() instanceof UIResource)) 244: { 245: MetalUtils.paintGradient(g, 0, 0, c.getWidth(), c.getHeight(), 246: SwingConstants.VERTICAL, 247: getPropertyPrefix() + "gradient"); 248: paint(g, c); 249: } 250: else 251: super.update(g, c); 252: } 253: }
GNU Classpath (0.91) |