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My first initial commit with all of mine experimental changes.

Dmitry Kabak (userdima committed 13 years ago

Commit d37b88d1 parent 3f5b46618352 files · +2598093 −-8690Browse files

Showing the changes to java/pkg/sun/tools/jconsole/Utilities.java (1 of 18352 files). Show all

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java/pkg/sun/tools/jconsole/Utilities.java+166−0
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1/*
2 * Copyright (c) 2005, 2006, 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
26package sun.tools.jconsole;
27
28import java.awt.*;
29
30import javax.accessibility.*;
31import javax.swing.*;
32import javax.swing.border.*;
33import javax.swing.tree.*;
34
35import sun.tools.jconsole.inspector.*;
36
37import static java.lang.Math.*;
38
39/**
40 * Miscellaneous utility methods for JConsole
41 */
42public class Utilities {
43 private static final String windowsLaF =
44 "com.sun.java.swing.plaf.windows.WindowsLookAndFeel";
45
46 public static void updateTransparency(JComponent comp) {
47 LookAndFeel laf = UIManager.getLookAndFeel();
48 boolean transparent = laf.getClass().getName().equals(windowsLaF);
49 setTabbedPaneTransparency(comp, transparent);
50 }
51
52 private static void setTabbedPaneTransparency(JComponent comp, boolean transparent) {
53 for (Component child : comp.getComponents()) {
54 if (comp instanceof JTabbedPane) {
55 setTransparency((JComponent)child, transparent);
56 } else if (child instanceof JComponent) {
57 setTabbedPaneTransparency((JComponent)child, transparent);
58 }
59 }
60 }
61
62 private static void setTransparency(JComponent comp, boolean transparent) {
63 comp.setOpaque(!transparent);
64 for (Component child : comp.getComponents()) {
65 if (child instanceof JPanel ||
66 child instanceof JSplitPane ||
67 child instanceof JScrollPane ||
68 child instanceof JViewport ||
69 child instanceof JCheckBox) {
70
71 setTransparency((JComponent)child, transparent);
72 }
73 if (child instanceof XTree) {
74 XTree t = (XTree)child;
75 DefaultTreeCellRenderer cr = (DefaultTreeCellRenderer)t.getCellRenderer();
76
77 cr.setBackground(null);
78 cr.setBackgroundNonSelectionColor(new Color(0, 0, 0, 1));
79 t.setCellRenderer(cr);
80 setTransparency((JComponent)child, transparent);
81 }
82 }
83 }
84
85
86 /**
87 * A slightly modified border for JScrollPane to be used with a JTable inside
88 * a JTabbedPane. It has only top part and the rest is clipped to make the
89 * overall border less thick.
90 * The top border helps differentiating the containing table from its container.
91 */
92 public static JScrollPane newTableScrollPane(JComponent comp) {
93 return new TableScrollPane(comp);
94 }
95
96 @SuppressWarnings("serial")
97 private static class TableScrollPane extends JScrollPane {
98 public TableScrollPane(JComponent comp) {
99 super(comp);
100 }
101
102 protected void paintBorder(Graphics g) {
103 Border border = getBorder();
104 if (border != null) {
105 Insets insets = border.getBorderInsets(this);
106 if (insets != null) {
107 Shape oldClip = g.getClip();
108 g.clipRect(0, 0, getWidth(), insets.top);
109 super.paintBorder(g);
110 g.setClip(oldClip);
111 }
112 }
113 }
114 }
115
116 public static void setAccessibleName(Accessible comp, String name) {
117 comp.getAccessibleContext().setAccessibleName(name);
118 }
119
120 public static void setAccessibleDescription(Accessible comp, String description) {
121 comp.getAccessibleContext().setAccessibleDescription(description);
122 }
123
124
125 /**
126 * Modifies color c1 to ensure it has acceptable contrast
127 * relative to color c2.
128 *
129 * http://www.w3.org/TR/AERT#color-contrast
130 * http://www.cs.rit.edu/~ncs/color/t_convert.html#RGB%20to%20YIQ%20&%20YIQ%20to%20RGB
131 */
132 public static Color ensureContrast(Color c1, Color c2) {
133 double y1 = getColorBrightness(c1);
134 double y2 = getColorBrightness(c2);
135
136 if (abs(y1 - y2) < 125.0) {
137 if (y2 < 128.0) {
138 c1 = setColorBrightness(c1, y2 + 125.0);
139 } else {
140 c1 = setColorBrightness(c1, y2 - 125.0);
141 }
142 }
143
144 return c1;
145 }
146
147 public static double getColorBrightness(Color c) {
148 // Convert RGB -> YIQ and return the Y value
149 return (c.getRed() * 0.299 + c.getGreen() * 0.587 + c.getBlue() * 0.114);
150 }
151
152 private static Color setColorBrightness(Color c, double y) {
153 // Convert YIQ -> RGB
154 double i = (c.getRed() * 0.596 - c.getGreen() * 0.275 - c.getBlue() * 0.321);
155 double q = (c.getRed() * 0.212 - c.getGreen() * 0.523 + c.getBlue() * 0.311);
156
157 // Keep values in legal range. This may reduce the
158 // achieved contrast somewhat.
159 int r = max(0, min(255, (int)round(y + i * 0.956 + q * 0.621)));
160 int g = max(0, min(255, (int)round(y - i * 0.272 - q * 0.647)));
161 int b = max(0, min(255, (int)round(y - i * 1.105 + q * 1.702)));
162
163 return new Color(r, g, b);
164 }
165
166}