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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+
26+package sun.tools.jconsole;
27+
28+import java.awt.*;
29+
30+import javax.accessibility.*;
31+import javax.swing.*;
32+import javax.swing.border.*;
33+import javax.swing.tree.*;
34+
35+import sun.tools.jconsole.inspector.*;
36+
37+import static java.lang.Math.*;
38+
39+/**
40+ * Miscellaneous utility methods for JConsole
41+ */
42+public 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+}