--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/sun/tools/jconsole/Utilities.java Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,166 @@
+/*
+ * Copyright 2005-2006 Sun Microsystems, Inc. All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+package sun.tools.jconsole;
+
+import java.awt.*;
+
+import javax.accessibility.*;
+import javax.swing.*;
+import javax.swing.border.*;
+import javax.swing.tree.*;
+
+import sun.tools.jconsole.inspector.*;
+
+import static java.lang.Math.*;
+
+/**
+ * Miscellaneous utility methods for JConsole
+ */
+public class Utilities {
+ private static final String windowsLaF =
+ "com.sun.java.swing.plaf.windows.WindowsLookAndFeel";
+
+ public static void updateTransparency(JComponent comp) {
+ LookAndFeel laf = UIManager.getLookAndFeel();
+ boolean transparent = laf.getClass().getName().equals(windowsLaF);
+ setTabbedPaneTransparency(comp, transparent);
+ }
+
+ private static void setTabbedPaneTransparency(JComponent comp, boolean transparent) {
+ for (Component child : comp.getComponents()) {
+ if (comp instanceof JTabbedPane) {
+ setTransparency((JComponent)child, transparent);
+ } else if (child instanceof JComponent) {
+ setTabbedPaneTransparency((JComponent)child, transparent);
+ }
+ }
+ }
+
+ private static void setTransparency(JComponent comp, boolean transparent) {
+ comp.setOpaque(!transparent);
+ for (Component child : comp.getComponents()) {
+ if (child instanceof JPanel ||
+ child instanceof JSplitPane ||
+ child instanceof JScrollPane ||
+ child instanceof JViewport ||
+ child instanceof JCheckBox) {
+
+ setTransparency((JComponent)child, transparent);
+ }
+ if (child instanceof XTree) {
+ XTree t = (XTree)child;
+ DefaultTreeCellRenderer cr = (DefaultTreeCellRenderer)t.getCellRenderer();
+
+ cr.setBackground(null);
+ cr.setBackgroundNonSelectionColor(new Color(0, 0, 0, 1));
+ t.setCellRenderer(cr);
+ setTransparency((JComponent)child, transparent);
+ }
+ }
+ }
+
+
+ /**
+ * A slightly modified border for JScrollPane to be used with a JTable inside
+ * a JTabbedPane. It has only top part and the rest is clipped to make the
+ * overall border less thick.
+ * The top border helps differentiating the containing table from its container.
+ */
+ public static JScrollPane newTableScrollPane(JComponent comp) {
+ return new TableScrollPane(comp);
+ }
+
+ @SuppressWarnings("serial")
+ private static class TableScrollPane extends JScrollPane {
+ public TableScrollPane(JComponent comp) {
+ super(comp);
+ }
+
+ protected void paintBorder(Graphics g) {
+ Border border = getBorder();
+ if (border != null) {
+ Insets insets = border.getBorderInsets(this);
+ if (insets != null) {
+ Shape oldClip = g.getClip();
+ g.clipRect(0, 0, getWidth(), insets.top);
+ super.paintBorder(g);
+ g.setClip(oldClip);
+ }
+ }
+ }
+ }
+
+ public static void setAccessibleName(Accessible comp, String name) {
+ comp.getAccessibleContext().setAccessibleName(name);
+ }
+
+ public static void setAccessibleDescription(Accessible comp, String description) {
+ comp.getAccessibleContext().setAccessibleDescription(description);
+ }
+
+
+ /**
+ * Modifies color c1 to ensure it has acceptable contrast
+ * relative to color c2.
+ *
+ * http://www.w3.org/TR/AERT#color-contrast
+ * http://www.cs.rit.edu/~ncs/color/t_convert.html#RGB%20to%20YIQ%20&%20YIQ%20to%20RGB
+ */
+ public static Color ensureContrast(Color c1, Color c2) {
+ double y1 = getColorBrightness(c1);
+ double y2 = getColorBrightness(c2);
+
+ if (abs(y1 - y2) < 125.0) {
+ if (y2 < 128.0) {
+ c1 = setColorBrightness(c1, y2 + 125.0);
+ } else {
+ c1 = setColorBrightness(c1, y2 - 125.0);
+ }
+ }
+
+ return c1;
+ }
+
+ public static double getColorBrightness(Color c) {
+ // Convert RGB -> YIQ and return the Y value
+ return (c.getRed() * 0.299 + c.getGreen() * 0.587 + c.getBlue() * 0.114);
+ }
+
+ private static Color setColorBrightness(Color c, double y) {
+ // Convert YIQ -> RGB
+ double i = (c.getRed() * 0.596 - c.getGreen() * 0.275 - c.getBlue() * 0.321);
+ double q = (c.getRed() * 0.212 - c.getGreen() * 0.523 + c.getBlue() * 0.311);
+
+ // Keep values in legal range. This may reduce the
+ // achieved contrast somewhat.
+ int r = max(0, min(255, (int)round(y + i * 0.956 + q * 0.621)));
+ int g = max(0, min(255, (int)round(y - i * 0.272 - q * 0.647)));
+ int b = max(0, min(255, (int)round(y - i * 1.105 + q * 1.702)));
+
+ return new Color(r, g, b);
+ }
+
+}