01: /*
02: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
03: *
04: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
05: *
06: * The contents of this file are subject to the terms of either the GNU
07: * General Public License Version 2 only ("GPL") or the Common
08: * Development and Distribution License("CDDL") (collectively, the
09: * "License"). You may not use this file except in compliance with the
10: * License. You can obtain a copy of the License at
11: * http://www.netbeans.org/cddl-gplv2.html
12: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
13: * specific language governing permissions and limitations under the
14: * License. When distributing the software, include this License Header
15: * Notice in each file and include the License file at
16: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
17: * particular file as subject to the "Classpath" exception as provided
18: * by Sun in the GPL Version 2 section of the License file that
19: * accompanied this code. If applicable, add the following below the
20: * License Header, with the fields enclosed by brackets [] replaced by
21: * your own identifying information:
22: * "Portions Copyrighted [year] [name of copyright owner]"
23: *
24: * Contributor(s):
25: * The Original Software is NetBeans. The Initial Developer of the Original
26: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
27: * Microsystems, Inc. All Rights Reserved.
28: *
29: * If you wish your version of this file to be governed by only the CDDL
30: * or only the GPL Version 2, indicate your decision by adding
31: * "[Contributor] elects to include this software in this distribution
32: * under the [CDDL or GPL Version 2] license." If you do not indicate a
33: * single choice of license, a recipient has the option to distribute
34: * your version of this file under either the CDDL, the GPL Version 2 or
35: * to extend the choice of license to its licensees as provided above.
36: * However, if you add GPL Version 2 code and therefore, elected the GPL
37: * Version 2 license, then the option applies only if the new code is
38: * made subject to such option by the copyright holder.
39: */
40:
41: package org.netbeans.lib.profiler.ui.charts;
42:
43: import java.awt.*;
44: import java.util.HashMap;
45:
46: /**
47: *
48: * @author Jiri Sedlacek
49: */
50: public class DecimalAxisUtils {
51: //~ Static fields/initializers -----------------------------------------------------------------------------------------------
52:
53: private static final long[] timeUnitsGrid = new long[] { 1, 2, 5 };
54:
55: //~ Methods ------------------------------------------------------------------------------------------------------------------
56:
57: public static long getOptimalUnits(double factor,
58: int minimumVerticalMarksDistance) {
59: if (factor <= 0) {
60: return 0;
61: }
62:
63: long decimalFactor = 1;
64:
65: while (true) {
66: for (int i = 0; i < timeUnitsGrid.length; i++) {
67: if ((timeUnitsGrid[i] * decimalFactor * factor) >= minimumVerticalMarksDistance) {
68: return timeUnitsGrid[i] * decimalFactor;
69: }
70: }
71:
72: decimalFactor *= 10;
73: }
74: }
75: }
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