1 /*
2 * Copyright (c) 1998, 2014, 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 javax.swing.plaf.metal;
27
28 import java.awt.*;
29 import java.awt.image.*;
30 import javax.swing.*;
31 import java.util.ArrayList;
32 import java.util.List;
33 import sun.awt.AppContext;
34
35 /**
36 * Implements the bumps used throughout the Metal Look and Feel.
37 *
38 * @author Tom Santos
39 * @author Steve Wilson
40 */
41
42
43 class MetalBumps implements Icon {
44
45 static final Color ALPHA = new Color(0, 0, 0, 0);
46
47 protected int xBumps;
48 protected int yBumps;
49 protected Color topColor;
50 protected Color shadowColor;
51 protected Color backColor;
52
53 private static final Object METAL_BUMPS = new Object();
54 protected BumpBuffer buffer;
55
56 /**
57 * Creates MetalBumps of the specified size with the specified colors.
58 * If <code>newBackColor</code> is null, the background will be
59 * transparent.
60 */
61 public MetalBumps( int width, int height,
62 Color newTopColor, Color newShadowColor, Color newBackColor ) {
63 setBumpArea( width, height );
64 setBumpColors( newTopColor, newShadowColor, newBackColor );
65 }
66
67 private static BumpBuffer createBuffer(GraphicsConfiguration gc,
68 Color topColor, Color shadowColor, Color backColor) {
69 AppContext context = AppContext.getAppContext();
70 @SuppressWarnings("unchecked")
71 List<BumpBuffer> buffers = (List<BumpBuffer>) context.get(METAL_BUMPS);
72 if (buffers == null) {
73 buffers = new ArrayList<BumpBuffer>();
74 context.put(METAL_BUMPS, buffers);
75 }
76 for (BumpBuffer buffer : buffers) {
77 if (buffer.hasSameConfiguration(gc, topColor, shadowColor, backColor)) {
78 return buffer;
79 }
80 }
81 BumpBuffer buffer = new BumpBuffer(gc, topColor, shadowColor, backColor);
82 buffers.add(buffer);
83 return buffer;
84 }
85
86 public void setBumpArea( Dimension bumpArea ) {
87 setBumpArea( bumpArea.width, bumpArea.height );
88 }
89
90 public void setBumpArea( int width, int height ) {
91 xBumps = width / 2;
92 yBumps = height / 2;
93 }
94
95 public void setBumpColors( Color newTopColor, Color newShadowColor, Color newBackColor ) {
96 topColor = newTopColor;
97 shadowColor = newShadowColor;
98 if (newBackColor == null) {
99 backColor = ALPHA;
100 }
101 else {
102 backColor = newBackColor;
103 }
104 }
105
106 public void paintIcon( Component c, Graphics g, int x, int y ) {
107 GraphicsConfiguration gc = (g instanceof Graphics2D) ?
108 ((Graphics2D) g).getDeviceConfiguration() : null;
109
110 if ((buffer == null) || !buffer.hasSameConfiguration(gc, topColor, shadowColor, backColor)) {
111 buffer = createBuffer(gc, topColor, shadowColor, backColor);
112 }
113
114 int bufferWidth = BumpBuffer.IMAGE_SIZE;
115 int bufferHeight = BumpBuffer.IMAGE_SIZE;
116 int iconWidth = getIconWidth();
117 int iconHeight = getIconHeight();
118 int x2 = x + iconWidth;
119 int y2 = y + iconHeight;
120 int savex = x;
121
122 while (y < y2) {
123 int h = Math.min(y2 - y, bufferHeight);
124 for (x = savex; x < x2; x += bufferWidth) {
125 int w = Math.min(x2 - x, bufferWidth);
126 g.drawImage(buffer.getImage(),
127 x, y, x+w, y+h,
128 0, 0, w, h,
129 null);
130 }
131 y += bufferHeight;
132 }
133 }
134
135 public int getIconWidth() {
136 return xBumps * 2;
137 }
138
139 public int getIconHeight() {
140 return yBumps * 2;
141 }
142 }
143
144
145 class BumpBuffer {
146
147 static final int IMAGE_SIZE = 64;
148
149 transient Image image;
150 Color topColor;
151 Color shadowColor;
152 Color backColor;
153 private GraphicsConfiguration gc;
154
155 public BumpBuffer(GraphicsConfiguration gc, Color aTopColor,
156 Color aShadowColor, Color aBackColor) {
157 this.gc = gc;
158 topColor = aTopColor;
159 shadowColor = aShadowColor;
160 backColor = aBackColor;
161 createImage();
162 fillBumpBuffer();
163 }
164
165 public boolean hasSameConfiguration(GraphicsConfiguration gc,
166 Color aTopColor, Color aShadowColor,
167 Color aBackColor) {
168 if (this.gc != null) {
169 if (!this.gc.equals(gc)) {
170 return false;
171 }
172 }
173 else if (gc != null) {
174 return false;
175 }
176 return topColor.equals( aTopColor ) &&
177 shadowColor.equals( aShadowColor ) &&
178 backColor.equals( aBackColor );
179 }
180
181 /**
182 * Returns the Image containing the bumps appropriate for the passed in
183 * <code>GraphicsConfiguration</code>.
184 */
185 public Image getImage() {
186 return image;
187 }
188
189 /**
190 * Paints the bumps into the current image.
191 */
192 private void fillBumpBuffer() {
193 Graphics g = image.getGraphics();
194
195 g.setColor( backColor );
196 g.fillRect( 0, 0, IMAGE_SIZE, IMAGE_SIZE );
197
198 g.setColor(topColor);
199 for (int x = 0; x < IMAGE_SIZE; x+=4) {
200 for (int y = 0; y < IMAGE_SIZE; y+=4) {
201 g.drawLine( x, y, x, y );
202 g.drawLine( x+2, y+2, x+2, y+2);
203 }
204 }
205
206 g.setColor(shadowColor);
207 for (int x = 0; x < IMAGE_SIZE; x+=4) {
208 for (int y = 0; y < IMAGE_SIZE; y+=4) {
209 g.drawLine( x+1, y+1, x+1, y+1 );
210 g.drawLine( x+3, y+3, x+3, y+3);
211 }
212 }
213 g.dispose();
214 }
215
216 /**
217 * Creates the image appropriate for the passed in
218 * <code>GraphicsConfiguration</code>, which may be null.
219 */
220 private void createImage() {
221 if (gc != null) {
222 image = gc.createCompatibleImage(IMAGE_SIZE, IMAGE_SIZE,
223 (backColor != MetalBumps.ALPHA) ? Transparency.OPAQUE :
224 Transparency.BITMASK);
225 }
226 else {
227 int cmap[] = { backColor.getRGB(), topColor.getRGB(),
228 shadowColor.getRGB() };
229 IndexColorModel icm = new IndexColorModel(8, 3, cmap, 0, false,
230 (backColor == MetalBumps.ALPHA) ? 0 : -1,
231 DataBuffer.TYPE_BYTE);
232 image = new BufferedImage(IMAGE_SIZE, IMAGE_SIZE,
233 BufferedImage.TYPE_BYTE_INDEXED, icm);
234 }
235 }
236 }