| 1 | /* |
| 2 | * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions |
| 6 | * are met: |
| 7 | * |
| 8 | * -Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * |
| 11 | * -Redistribution in binary form must reproduct the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in |
| 13 | * the documentation and/or other materials provided with the distribution. |
| 14 | * |
| 15 | * Neither the name of Sun Microsystems, Inc. or the names of contributors |
| 16 | * may be used to endorse or promote products derived from this software |
| 17 | * without specific prior written permission. |
| 18 | * |
| 19 | * This software is provided "AS IS," without a warranty of any kind. ALL |
| 20 | * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING |
| 21 | * ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE |
| 22 | * OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT |
| 23 | * BE LIABLE FOR ANY DAMAGES OR LIABILITIES SUFFERED BY LICENSEE AS A RESULT |
| 24 | * OF OR RELATING TO USE, MODIFICATION OR DISTRIBUTION OF THE SOFTWARE OR ITS |
| 25 | * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST |
| 26 | * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, |
| 27 | * INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY |
| 28 | * OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE SOFTWARE, EVEN |
| 29 | * IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. |
| 30 | * |
| 31 | * You acknowledge that Software is not designed, licensed or intended for |
| 32 | * use in the design, construction, operation or maintenance of any nuclear |
| 33 | * facility. |
| 34 | */ |
| 35 | |
| 36 | /* |
| 37 | * @(#)BezierAnimationPanel.java 1.12 03/03/12 |
| 38 | */ |
| 39 | |
| 40 | |
| 41 | import javax.swing.*; |
| 42 | import javax.swing.event.*; |
| 43 | import javax.swing.text.*; |
| 44 | import javax.swing.border.*; |
| 45 | import javax.swing.colorchooser.*; |
| 46 | import javax.swing.filechooser.*; |
| 47 | import javax.accessibility.*; |
| 48 | |
| 49 | import java.awt.*; |
| 50 | import java.awt.font.*; |
| 51 | import java.awt.geom.*; |
| 52 | import java.awt.image.*; |
| 53 | import java.awt.event.*; |
| 54 | |
| 55 | /** |
| 56 | * BezierAnimationPanel |
| 57 | * |
| 58 | * @version 1.12 03/12/03 |
| 59 | * @author Jim Graham |
| 60 | * @author Jeff Dinkins (removed dynamic setting changes, made swing friendly) |
| 61 | */ |
| 62 | class BezierAnimationPanel extends JPanel implements Runnable { |
| 63 | |
| 64 | Color backgroundColor = new Color(0, 0, 153); |
| 65 | Color outerColor = new Color(255, 255, 255); |
| 66 | Color gradientColorA = new Color(255, 0, 101); |
| 67 | Color gradientColorB = new Color(255, 255, 0); |
| 68 | |
| 69 | boolean bgChanged = false; |
| 70 | |
| 71 | GradientPaint gradient = null; |
| 72 | |
| 73 | public final int NUMPTS = 6; |
| 74 | |
| 75 | float animpts[] = new float[NUMPTS * 2]; |
| 76 | |
| 77 | float deltas[] = new float[NUMPTS * 2]; |
| 78 | |
| 79 | float staticpts[] = { |
| 80 | 50.0f, 0.0f, |
| 81 | 150.0f, 0.0f, |
| 82 | 200.0f, 75.0f, |
| 83 | 150.0f, 150.0f, |
| 84 | 50.0f, 150.0f, |
| 85 | 0.0f, 75.0f, |
| 86 | }; |
| 87 | |
| 88 | float movepts[] = new float[staticpts.length]; |
| 89 | |
| 90 | BufferedImage img; |
| 91 | |
| 92 | Rectangle bounds = null; |
| 93 | |
| 94 | Thread anim; |
| 95 | |
| 96 | /** |
| 97 | * BezierAnimationPanel Constructor |
| 98 | */ |
| 99 | public BezierAnimationPanel() { |
| 100 | addHierarchyListener( |
| 101 | new HierarchyListener() { |
| 102 | public void hierarchyChanged(HierarchyEvent e) { |
| 103 | if(isShowing()) { |
| 104 | start(); |
| 105 | } else { |
| 106 | stop(); |
| 107 | } |
| 108 | } |
| 109 | } |
| 110 | ); |
| 111 | setBackground(getBackgroundColor()); |
| 112 | } |
| 113 | |
| 114 | public boolean isOpaque() { |
| 115 | return true; |
| 116 | } |
| 117 | |
| 118 | public Color getGradientColorA() { |
| 119 | return gradientColorA; |
| 120 | } |
| 121 | |
| 122 | public void setGradientColorA(Color c) { |
| 123 | if(c != null) { |
| 124 | gradientColorA = c; |
| 125 | } |
| 126 | } |
| 127 | |
| 128 | public Color getGradientColorB() { |
| 129 | return gradientColorB; |
| 130 | } |
| 131 | |
| 132 | public void setGradientColorB(Color c) { |
| 133 | if(c != null) { |
| 134 | gradientColorB = c; |
| 135 | } |
| 136 | } |
| 137 | |
| 138 | public Color getOuterColor() { |
| 139 | return outerColor; |
| 140 | } |
| 141 | |
| 142 | public void setOuterColor(Color c) { |
| 143 | if(c != null) { |
| 144 | outerColor = c; |
| 145 | } |
| 146 | } |
| 147 | |
| 148 | public Color getBackgroundColor() { |
| 149 | return backgroundColor; |
| 150 | } |
| 151 | |
| 152 | public void setBackgroundColor(Color c) { |
| 153 | if(c != null) { |
| 154 | backgroundColor = c; |
| 155 | setBackground(c); |
| 156 | bgChanged = true; |
| 157 | } |
| 158 | } |
| 159 | |
| 160 | public void start() { |
| 161 | Dimension size = getSize(); |
| 162 | for (int i = 0; i < animpts.length; i += 2) { |
| 163 | animpts[i + 0] = (float) (Math.random() * size.width); |
| 164 | animpts[i + 1] = (float) (Math.random() * size.height); |
| 165 | deltas[i + 0] = (float) (Math.random() * 4.0 + 2.0); |
| 166 | deltas[i + 1] = (float) (Math.random() * 4.0 + 2.0); |
| 167 | if (animpts[i + 0] > size.width / 6.0f) { |
| 168 | deltas[i + 0] = -deltas[i + 0]; |
| 169 | } |
| 170 | if (animpts[i + 1] > size.height / 6.0f) { |
| 171 | deltas[i + 1] = -deltas[i + 1]; |
| 172 | } |
| 173 | } |
| 174 | anim = new Thread(this); |
| 175 | anim.setPriority(Thread.MIN_PRIORITY); |
| 176 | anim.start(); |
| 177 | } |
| 178 | |
| 179 | public synchronized void stop() { |
| 180 | anim = null; |
| 181 | notify(); |
| 182 | } |
| 183 | |
| 184 | public void animate(float[] pts, float[] deltas, int index, int limit) { |
| 185 | float newpt = pts[index] + deltas[index]; |
| 186 | if (newpt <= 0) { |
| 187 | newpt = -newpt; |
| 188 | deltas[index] = (float) (Math.random() * 3.0 + 2.0); |
| 189 | } else if (newpt >= (float) limit) { |
| 190 | newpt = 2.0f * limit - newpt; |
| 191 | deltas[index] = - (float) (Math.random() * 3.0 + 2.0); |
| 192 | } |
| 193 | pts[index] = newpt; |
| 194 | } |
| 195 | |
| 196 | public void run() { |
| 197 | Thread me = Thread.currentThread(); |
| 198 | while (getSize().width <= 0) { |
| 199 | try { |
| 200 | anim.sleep(500); |
| 201 | } catch (InterruptedException e) { |
| 202 | return; |
| 203 | } |
| 204 | } |
| 205 | |
| 206 | Graphics2D g2d = null; |
| 207 | Graphics2D BufferG2D = null; |
| 208 | Graphics2D ScreenG2D = null; |
| 209 | BasicStroke solid = new BasicStroke(9.0f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_ROUND, 9.0f); |
| 210 | GeneralPath gp = new GeneralPath(GeneralPath.WIND_NON_ZERO); |
| 211 | int rule = AlphaComposite.SRC_OVER; |
| 212 | AlphaComposite opaque = AlphaComposite.SrcOver; |
| 213 | AlphaComposite blend = AlphaComposite.getInstance(rule, 0.9f); |
| 214 | AlphaComposite set = AlphaComposite.Src; |
| 215 | int frame = 0; |
| 216 | int frametmp = 0; |
| 217 | Dimension oldSize = getSize(); |
| 218 | Shape clippath = null; |
| 219 | while (anim == me) { |
| 220 | Dimension size = getSize(); |
| 221 | if (size.width != oldSize.width || size.height != oldSize.height) { |
| 222 | img = null; |
| 223 | clippath = null; |
| 224 | if (BufferG2D != null) { |
| 225 | BufferG2D.dispose(); |
| 226 | BufferG2D = null; |
| 227 | } |
| 228 | if (ScreenG2D != null) { |
| 229 | ScreenG2D.dispose(); |
| 230 | ScreenG2D = null; |
| 231 | } |
| 232 | } |
| 233 | oldSize = size; |
| 234 | |
| 235 | if (img == null) { |
| 236 | img = (BufferedImage) createImage(size.width, size.height); |
| 237 | } |
| 238 | |
| 239 | if (BufferG2D == null) { |
| 240 | BufferG2D = img.createGraphics(); |
| 241 | BufferG2D.setRenderingHint(RenderingHints.KEY_RENDERING, |
| 242 | RenderingHints.VALUE_RENDER_DEFAULT); |
| 243 | BufferG2D.setClip(clippath); |
| 244 | } |
| 245 | g2d = BufferG2D; |
| 246 | |
| 247 | float[] ctrlpts; |
| 248 | for (int i = 0; i < animpts.length; i += 2) { |
| 249 | animate(animpts, deltas, i + 0, size.width); |
| 250 | animate(animpts, deltas, i + 1, size.height); |
| 251 | } |
| 252 | ctrlpts = animpts; |
| 253 | int len = ctrlpts.length; |
| 254 | gp.reset(); |
| 255 | int dir = 0; |
| 256 | float prevx = ctrlpts[len - 2]; |
| 257 | float prevy = ctrlpts[len - 1]; |
| 258 | float curx = ctrlpts[0]; |
| 259 | float cury = ctrlpts[1]; |
| 260 | float midx = (curx + prevx) / 2.0f; |
| 261 | float midy = (cury + prevy) / 2.0f; |
| 262 | gp.moveTo(midx, midy); |
| 263 | for (int i = 2; i <= ctrlpts.length; i += 2) { |
| 264 | float x1 = (midx + curx) / 2.0f; |
| 265 | float y1 = (midy + cury) / 2.0f; |
| 266 | prevx = curx; |
| 267 | prevy = cury; |
| 268 | if (i < ctrlpts.length) { |
| 269 | curx = ctrlpts[i + 0]; |
| 270 | cury = ctrlpts[i + 1]; |
| 271 | } else { |
| 272 | curx = ctrlpts[0]; |
| 273 | cury = ctrlpts[1]; |
| 274 | } |
| 275 | midx = (curx + prevx) / 2.0f; |
| 276 | midy = (cury + prevy) / 2.0f; |
| 277 | float x2 = (prevx + midx) / 2.0f; |
| 278 | float y2 = (prevy + midy) / 2.0f; |
| 279 | gp.curveTo(x1, y1, x2, y2, midx, midy); |
| 280 | } |
| 281 | gp.closePath(); |
| 282 | |
| 283 | g2d.setComposite(set); |
| 284 | g2d.setBackground(backgroundColor); |
| 285 | g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, |
| 286 | RenderingHints.VALUE_ANTIALIAS_OFF); |
| 287 | |
| 288 | if(bgChanged || bounds == null) { |
| 289 | bounds = new Rectangle(0, 0, getWidth(), getHeight()); |
| 290 | bgChanged = false; |
| 291 | } |
| 292 | // g2d.clearRect(bounds.x-5, bounds.y-5, bounds.x + bounds.width + 5, bounds.y + bounds.height + 5); |
| 293 | g2d.clearRect(0, 0, getWidth(), getHeight()); |
| 294 | |
| 295 | g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, |
| 296 | RenderingHints.VALUE_ANTIALIAS_ON); |
| 297 | g2d.setColor(outerColor); |
| 298 | g2d.setComposite(opaque); |
| 299 | g2d.setStroke(solid); |
| 300 | g2d.draw(gp); |
| 301 | g2d.setPaint(gradient); |
| 302 | |
| 303 | if(!bgChanged) { |
| 304 | bounds = gp.getBounds(); |
| 305 | } else { |
| 306 | bounds = new Rectangle(0, 0, getWidth(), getHeight()); |
| 307 | bgChanged = false; |
| 308 | } |
| 309 | gradient = new GradientPaint(bounds.x, bounds.y, gradientColorA, |
| 310 | bounds.x + bounds.width, bounds.y + bounds.height, |
| 311 | gradientColorB, true); |
| 312 | g2d.setComposite(blend); |
| 313 | g2d.fill(gp); |
| 314 | |
| 315 | if (g2d == BufferG2D) { |
| 316 | repaint(); |
| 317 | } |
| 318 | ++frame; |
| 319 | Thread.yield(); |
| 320 | } |
| 321 | if (g2d != null) { |
| 322 | g2d.dispose(); |
| 323 | } |
| 324 | } |
| 325 | |
| 326 | public void paint(Graphics g) { |
| 327 | synchronized (this) { |
| 328 | Graphics2D g2d = (Graphics2D) g; |
| 329 | if (img != null) { |
| 330 | int imgw = img.getWidth(); |
| 331 | int imgh = img.getHeight(); |
| 332 | g2d.setComposite(AlphaComposite.Src); |
| 333 | g2d.drawImage(img, null, 0, 0); |
| 334 | } |
| 335 | } |
| 336 | } |
| 337 | } |