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Java Source | 1998-06-30 | 4.1 KB | 134 lines |
- /*
- * @(#)MetalToolTipUI.java 1.8 98/04/08
- *
- * Copyright (c) 1997 Sun Microsystems, Inc. All Rights Reserved.
- *
- * This software is the confidential and proprietary information of Sun
- * Microsystems, Inc. ("Confidential Information"). You shall not
- * disclose such Confidential Information and shall use it only in
- * accordance with the terms of the license agreement you entered into
- * with Sun.
- *
- * SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE
- * SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
- * PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR ANY DAMAGES
- * SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING
- * THIS SOFTWARE OR ITS DERIVATIVES.
- *
- */
-
- package com.sun.java.swing.plaf.metal;
-
-
- import java.awt.*;
- import java.awt.event.*;
- import com.sun.java.swing.*;
- import com.sun.java.swing.BorderFactory;
- import com.sun.java.swing.border.Border;
- import com.sun.java.swing.plaf.*;
- import com.sun.java.swing.plaf.basic.BasicToolTipUI;
-
-
- /**
- * A Metal L&F extension of BasicToolTipUI.
- * <p>
- * Warning: serialized objects of this class will not be compatible with
- * future swing releases. The current serialization support is appropriate
- * for short term storage or RMI between Swing1.0 applications. It will
- * not be possible to load serialized Swing1.0 objects with future releases
- * of Swing. The JDK1.2 release of Swing will be the compatibility
- * baseline for the serialized form of Swing objects.
- *
- * @version 1.8 04/08/98
- * @author Steve Wilson
- */
- public class MetalToolTipUI extends BasicToolTipUI {
-
- static MetalToolTipUI sharedInstance = new MetalToolTipUI();
- Font smallFont;
- static JToolTip tip;
- public static final int padSpaceBetweenStrings = 12;
-
- public MetalToolTipUI() {
- super();
- }
-
- public static ComponentUI createUI(JComponent c) {
- return sharedInstance;
- }
-
- public void installUI(JComponent c) {
- super.installUI(c);
- tip = (JToolTip)c;
- Font f = c.getFont();
- smallFont = new Font( f.getName(), f.getStyle(), f.getSize() - 2 );
- }
-
- public void paint(Graphics g, JComponent c) {
-
- FontMetrics metrics = Toolkit.getDefaultToolkit().getFontMetrics(g.getFont());
- Dimension size = c.getSize();
-
- g.setColor(c.getBackground());
- g.fillRect(0, 0, size.width, size.height);
-
- g.setColor(c.getForeground());
- String tipText = ((JToolTip)c).getTipText();
- if (tipText == null) {
- tipText = "";
- }
- String keyText = getAcceleratorString();
- g.drawString(tipText, 3, 2 + metrics.getAscent());
- if (! (keyText.equals(""))) { // only draw control key if there is one
- g.setFont(smallFont);
- g.setColor( MetalLookAndFeel.getPrimaryControlDarkShadow() );
- g.drawString(keyText,
- metrics.stringWidth(tipText) + 3 + padSpaceBetweenStrings,
- 2 + metrics.getAscent());
- }
- }
-
- public Dimension getPreferredSize(JComponent c) {
- FontMetrics metrics = Toolkit.getDefaultToolkit().getFontMetrics(c.getFont());
-
- String tipText = ((JToolTip)c).getTipText();
- if (tipText == null) {
- tipText = "";
- }
-
- Dimension d = new Dimension(metrics.stringWidth(tipText) + 6, metrics.getHeight() + 4);
-
- String key = getAcceleratorString();
- if (! (key.equals(""))) {
- metrics = Toolkit.getDefaultToolkit().getFontMetrics(smallFont);
- d.width += metrics.stringWidth(key) + padSpaceBetweenStrings;
- }
- return d;
- }
-
- public String getAcceleratorString() {
- JComponent comp = tip.getComponent();
- if (comp == null) {
- return "";
- }
- KeyStroke[] keys =comp.getRegisteredKeyStrokes();
- String controlKeyStr = "";
-
- for (int i = 0; i < keys.length; i++) {
-
- char c = (char)keys[i].getKeyCode();
- int mod = keys[i].getModifiers();
- if ( mod == InputEvent.CTRL_MASK ) {
- controlKeyStr = "cntl+"+(char)keys[i].getKeyCode();
- break;
- } else if (mod == InputEvent.ALT_MASK) {
- controlKeyStr = "alt+"+(char)keys[i].getKeyCode();
- break;
- }
- }
- return controlKeyStr;
- }
-
- }
-