1 /*
2  * Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved.
3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
5  * This code is free software; you can redistribute it and/or modify it
6  * under the terms of the GNU General Public License version 2 only, as
7  * published by the Free Software Foundation.  Oracle designates this
8  * particular file as subject to the "Classpath" exception as provided
9  * by Oracle in the LICENSE file that accompanied this code.
10  *
11  * This code is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
16  *
17  * You should have received a copy of the GNU General Public License version
18  * 2 along with this work; if not, write to the Free Software Foundation,
19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20  *
21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22  * or visit www.oracle.com if you need additional information or have any
23  * questions.
24  */
25 
26 package com.apple.laf;
27 
28 import java.awt.*;
29 
30 import javax.swing.*;
31 import javax.swing.plaf.*;
32 import javax.swing.plaf.basic.*;
33 
34 import sun.swing.SwingUtilities2;
35 
36 import com.apple.laf.AquaUtils.RecyclableSingleton;
37 import com.apple.laf.AquaUtils.RecyclableSingletonFromDefaultConstructor;
38 
39 public class AquaLabelUI extends BasicLabelUI {
40     private static final RecyclableSingleton<AquaLabelUI> aquaLabelUI = new RecyclableSingletonFromDefaultConstructor<AquaLabelUI>(AquaLabelUI.class);
41 
createUI(final JComponent c)42     public static ComponentUI createUI(final JComponent c) {
43         return aquaLabelUI.get();
44     }
45 
installListeners(final JLabel c)46     protected void installListeners(final JLabel c) {
47         super.installListeners(c);
48         AquaUtilControlSize.addSizePropertyListener(c);
49     }
50 
uninstallListeners(final JLabel c)51     protected void uninstallListeners(final JLabel c) {
52         AquaUtilControlSize.removeSizePropertyListener(c);
53         super.uninstallListeners(c);
54     }
55 
paintEnabledText(final JLabel l, final Graphics g, final String s, final int textX, final int textY)56     protected void paintEnabledText(final JLabel l, final Graphics g, final String s, final int textX, final int textY) {
57         int mnemIndex = l.getDisplayedMnemonicIndex();
58         if (AquaMnemonicHandler.isMnemonicHidden()) {
59             mnemIndex = -1;
60         }
61 
62         g.setColor(l.getForeground());
63         SwingUtilities2.drawStringUnderlineCharAt(l, g, s, mnemIndex, textX, textY);
64     }
65 
66     /**
67      * Paint clippedText at textX, textY with background.lighter() and then
68      * shifted down and to the right by one pixel with background.darker().
69      *
70      * @see #paint
71      * @see #paintEnabledText
72      */
paintDisabledText(final JLabel l, final Graphics g, final String s, final int textX, final int textY)73     protected void paintDisabledText(final JLabel l, final Graphics g, final String s, final int textX, final int textY) {
74         int accChar = l.getDisplayedMnemonicIndex();
75         if (AquaMnemonicHandler.isMnemonicHidden()) {
76             accChar = -1;
77         }
78 
79         final Color background = l.getBackground();
80 
81         // if our background is still something we set then we can use our happy background color.
82         if (background instanceof UIResource) {
83             g.setColor(getDisabledLabelColor(l));
84             SwingUtilities2.drawStringUnderlineCharAt(l, g, s, accChar, textX, textY);
85         } else {
86             super.paintDisabledText(l, g, s, textX, textY);
87         }
88     }
89 
90     static final String DISABLED_COLOR_KEY = "Label.disabledForegroundColor";
getDisabledLabelColor(final JLabel label)91     protected Color getDisabledLabelColor(final JLabel label) {
92         final Color fg = label.getForeground();
93 
94         final Object colorProperty = label.getClientProperty(DISABLED_COLOR_KEY);
95         if (colorProperty instanceof Color) {
96             final Color disabledColor = (Color)colorProperty;
97             if ((fg.getRGB() << 8) == (disabledColor.getRGB() << 8)) return disabledColor;
98         }
99 
100         final Color newDisabledColor = new Color(fg.getRed(), fg.getGreen(), fg.getBlue(), fg.getAlpha() / 2);
101         label.putClientProperty(DISABLED_COLOR_KEY, newDisabledColor);
102         return newDisabledColor;
103     }
104 }
105