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comparison agent/src/share/classes/sun/jvm/hotspot/ui/GraphicsUtilities.java @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 2000-2004 Sun Microsystems, Inc. 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.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 package sun.jvm.hotspot.ui;
26
27 import java.awt.*;
28 import java.awt.font.*;
29 import java.awt.geom.*;
30 import java.util.Random;
31 import javax.swing.*;
32 import javax.swing.border.*;
33
34 /** Useful utilities for drawing graphics */
35
36 public class GraphicsUtilities {
37 /** Returns a plain-styled 12-point version of the given font, or
38 null if the font could not be found */
39 public static Font lookupFont(String fontName) {
40 Font[] allFonts = GraphicsEnvironment.getLocalGraphicsEnvironment().getAllFonts();
41 Font font = null;
42 for (int i = 0; i < allFonts.length; i++) {
43 if (allFonts[i].getFontName().indexOf(fontName) != -1) {
44 font = allFonts[i];
45 break;
46 }
47 }
48 if (font == null) {
49 return null;
50 }
51 return font.deriveFont(Font.PLAIN, 12);
52 }
53
54 /** Compute the width and height of given string given the current
55 font context in the Graphics object */
56 public static Rectangle2D getStringBounds(String s, Graphics g) {
57 FontMetrics fm = g.getFontMetrics();
58 return fm.getStringBounds(s, 0, s.length(), g);
59 }
60
61 /** Compute just the width of the given string with the given
62 FontMetrics. This is less accurate then getStringBounds(),
63 above, since the graphics context is not taken into account. */
64 public static int getStringWidth(String s, FontMetrics fm) {
65 return fm.stringWidth(s);
66 }
67
68 public static void reshapeToAspectRatio(Component component,
69 float aspectRatio,
70 float fillRatio,
71 Dimension containerDimension) {
72 int x = containerDimension.width;
73 int y = containerDimension.height;
74
75 int desiredX;
76 int desiredY;
77
78 if (((float) x / (float) y) > aspectRatio) {
79 desiredY = (int) (fillRatio * y);
80 desiredX = (int) (desiredY * aspectRatio);
81 } else {
82 desiredX = (int) (fillRatio * x);
83 desiredY = (int) (desiredX / aspectRatio);
84 }
85 component.setSize(desiredX, desiredY);
86 }
87
88 public static void constrainToSize(Component component, Dimension containerDimension) {
89 Dimension d = component.getSize();
90 int x = d.width;
91 int y = d.height;
92 boolean changed = false;
93
94 if (x > containerDimension.width) {
95 x = containerDimension.width;
96 changed = true;
97 }
98 if (y > containerDimension.height) {
99 y = containerDimension.height;
100 changed = true;
101 }
102
103 if (changed) {
104 component.setSize(x, y);
105 }
106 }
107
108 public static void centerInContainer(Component c) {
109 centerInContainer(c, c.getParent().getSize());
110 }
111
112 public static void centerInContainer(Component component,
113 Dimension containerDimension) {
114 Dimension sz = component.getSize();
115 int x = ((containerDimension.width - sz.width) / 2);
116 int y = ((containerDimension.height - sz.height) / 2);
117 component.setLocation(x, y);
118 }
119
120 public static void moveToInContainer(Component component,
121 float relativeX,
122 float relativeY,
123 int minX,
124 int minY) {
125 Dimension d = component.getParent().getSize();
126 // Move the center of this component to the relative position in
127 // the parent. Don't clip this component, however.
128 Dimension sz = component.getSize();
129 int xPos = Math.min(d.width - sz.width,
130 (int) ((d.width * relativeX) - (sz.width / 2)));
131 int yPos = Math.min(d.height - sz.height,
132 (int) ((d.height * relativeY) - (sz.height / 2)));
133 xPos = Math.max(xPos, minX);
134 yPos = Math.max(yPos, minY);
135 component.setLocation(xPos, yPos);
136 }
137
138 static Random random = new Random();
139
140 public static void randomLocation(Component c) {
141 randomLocation(c, c.getParent().getSize());
142 }
143
144 public static void randomLocation(Component component,
145 Dimension containerDimension) {
146 Dimension sz = component.getSize();
147 int x = (int)((containerDimension.width - sz.width) * random.nextFloat());
148 int y = (int)((containerDimension.height - sz.height) * random.nextFloat());
149 component.setLocation(x, y);
150 }
151
152
153 public static Border newBorder(int size) {
154 return BorderFactory.createEmptyBorder(size, size, size, size);
155 }
156 }