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Java Source | 2002-09-06 | 8.9 KB | 334 lines |
- /*
- * Copyright (c) 2002 Sun Microsystems, Inc. All Rights Reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * -Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * -Redistribution in binary form must reproduct the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the distribution.
- *
- * Neither the name of Sun Microsystems, Inc. or the names of contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * This software is provided "AS IS," without a warranty of any kind. ALL
- * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING
- * ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
- * OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT
- * BE LIABLE FOR ANY DAMAGES OR LIABILITIES SUFFERED BY LICENSEE AS A RESULT
- * OF OR RELATING TO USE, MODIFICATION OR DISTRIBUTION OF THE SOFTWARE OR ITS
- * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST
- * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL,
- * INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY
- * OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE SOFTWARE, EVEN
- * IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
- *
- * You acknowledge that Software is not designed, licensed or intended for
- * use in the design, construction, operation or maintenance of any nuclear
- * facility.
- */
-
- /*
- * @(#)BezierAnimationPanel.java 1.10 02/06/13
- */
-
-
- import javax.swing.*;
- import javax.swing.event.*;
- import javax.swing.text.*;
- import javax.swing.border.*;
- import javax.swing.colorchooser.*;
- import javax.swing.filechooser.*;
- import javax.accessibility.*;
-
- import java.awt.*;
- import java.awt.font.*;
- import java.awt.geom.*;
- import java.awt.image.*;
- import java.awt.event.*;
-
- /**
- * BezierAnimationPanel
- *
- * @version 1.10 06/13/02
- * @author Jim Graham
- * @author Jeff Dinkins (removed dynamic setting changes, made swing friendly)
- */
- class BezierAnimationPanel extends JPanel implements Runnable {
-
- Color backgroundColor = new Color(0, 0, 153);
- Color outerColor = new Color(255, 255, 255);
- Color gradientColorA = new Color(255, 0, 101);
- Color gradientColorB = new Color(255, 255, 0);
-
- boolean bgChanged = false;
-
- GradientPaint gradient = null;
-
- public final int NUMPTS = 6;
-
- float animpts[] = new float[NUMPTS * 2];
-
- float deltas[] = new float[NUMPTS * 2];
-
- float staticpts[] = {
- 50.0f, 0.0f,
- 150.0f, 0.0f,
- 200.0f, 75.0f,
- 150.0f, 150.0f,
- 50.0f, 150.0f,
- 0.0f, 75.0f,
- };
-
- float movepts[] = new float[staticpts.length];
-
- BufferedImage img;
-
- Rectangle bounds = null;
-
- Thread anim;
-
- /**
- * BezierAnimationPanel Constructor
- */
- public BezierAnimationPanel() {
- addHierarchyListener(
- new HierarchyListener() {
- public void hierarchyChanged(HierarchyEvent e) {
- if(isShowing()) {
- start();
- } else {
- stop();
- }
- }
- }
- );
- setBackground(getBackgroundColor());
- }
-
- public Color getGradientColorA() {
- return gradientColorA;
- }
-
- public void setGradientColorA(Color c) {
- if(c != null) {
- gradientColorA = c;
- }
- }
-
- public Color getGradientColorB() {
- return gradientColorB;
- }
-
- public void setGradientColorB(Color c) {
- if(c != null) {
- gradientColorB = c;
- }
- }
-
- public Color getOuterColor() {
- return outerColor;
- }
-
- public void setOuterColor(Color c) {
- if(c != null) {
- outerColor = c;
- }
- }
-
- public Color getBackgroundColor() {
- return backgroundColor;
- }
-
- public void setBackgroundColor(Color c) {
- if(c != null) {
- backgroundColor = c;
- setBackground(c);
- bgChanged = true;
- }
- }
-
- public void start() {
- Dimension size = getSize();
- for (int i = 0; i < animpts.length; i += 2) {
- animpts[i + 0] = (float) (Math.random() * size.width);
- animpts[i + 1] = (float) (Math.random() * size.height);
- deltas[i + 0] = (float) (Math.random() * 4.0 + 2.0);
- deltas[i + 1] = (float) (Math.random() * 4.0 + 2.0);
- if (animpts[i + 0] > size.width / 6.0f) {
- deltas[i + 0] = -deltas[i + 0];
- }
- if (animpts[i + 1] > size.height / 6.0f) {
- deltas[i + 1] = -deltas[i + 1];
- }
- }
- anim = new Thread(this);
- anim.setPriority(Thread.MIN_PRIORITY);
- anim.start();
- }
-
- public synchronized void stop() {
- anim = null;
- notify();
- }
-
- public void animate(float[] pts, float[] deltas, int index, int limit) {
- float newpt = pts[index] + deltas[index];
- if (newpt <= 0) {
- newpt = -newpt;
- deltas[index] = (float) (Math.random() * 3.0 + 2.0);
- } else if (newpt >= (float) limit) {
- newpt = 2.0f * limit - newpt;
- deltas[index] = - (float) (Math.random() * 3.0 + 2.0);
- }
- pts[index] = newpt;
- }
-
- public void run() {
- Thread me = Thread.currentThread();
- while (getSize().width <= 0) {
- try {
- anim.sleep(500);
- } catch (InterruptedException e) {
- return;
- }
- }
-
- Graphics2D g2d = null;
- Graphics2D BufferG2D = null;
- Graphics2D ScreenG2D = null;
- BasicStroke solid = new BasicStroke(9.0f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_ROUND, 9.0f);
- GeneralPath gp = new GeneralPath(GeneralPath.WIND_NON_ZERO);
- int rule = AlphaComposite.SRC_OVER;
- AlphaComposite opaque = AlphaComposite.SrcOver;
- AlphaComposite blend = AlphaComposite.getInstance(rule, 0.9f);
- AlphaComposite set = AlphaComposite.Src;
- int frame = 0;
- int frametmp = 0;
- Dimension oldSize = getSize();
- Shape clippath = null;
- while (anim == me) {
- Dimension size = getSize();
- if (size.width != oldSize.width || size.height != oldSize.height) {
- img = null;
- clippath = null;
- if (BufferG2D != null) {
- BufferG2D.dispose();
- BufferG2D = null;
- }
- if (ScreenG2D != null) {
- ScreenG2D.dispose();
- ScreenG2D = null;
- }
- }
- oldSize = size;
-
- if (img == null) {
- img = (BufferedImage) createImage(size.width, size.height);
- }
-
- if (BufferG2D == null) {
- BufferG2D = img.createGraphics();
- BufferG2D.setRenderingHint(RenderingHints.KEY_RENDERING,
- RenderingHints.VALUE_RENDER_DEFAULT);
- BufferG2D.setClip(clippath);
- }
- g2d = BufferG2D;
-
- float[] ctrlpts;
- for (int i = 0; i < animpts.length; i += 2) {
- animate(animpts, deltas, i + 0, size.width);
- animate(animpts, deltas, i + 1, size.height);
- }
- ctrlpts = animpts;
- int len = ctrlpts.length;
- gp.reset();
- int dir = 0;
- float prevx = ctrlpts[len - 2];
- float prevy = ctrlpts[len - 1];
- float curx = ctrlpts[0];
- float cury = ctrlpts[1];
- float midx = (curx + prevx) / 2.0f;
- float midy = (cury + prevy) / 2.0f;
- gp.moveTo(midx, midy);
- for (int i = 2; i <= ctrlpts.length; i += 2) {
- float x1 = (midx + curx) / 2.0f;
- float y1 = (midy + cury) / 2.0f;
- prevx = curx;
- prevy = cury;
- if (i < ctrlpts.length) {
- curx = ctrlpts[i + 0];
- cury = ctrlpts[i + 1];
- } else {
- curx = ctrlpts[0];
- cury = ctrlpts[1];
- }
- midx = (curx + prevx) / 2.0f;
- midy = (cury + prevy) / 2.0f;
- float x2 = (prevx + midx) / 2.0f;
- float y2 = (prevy + midy) / 2.0f;
- gp.curveTo(x1, y1, x2, y2, midx, midy);
- }
- gp.closePath();
-
- g2d.setComposite(set);
- g2d.setBackground(backgroundColor);
- g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
- RenderingHints.VALUE_ANTIALIAS_OFF);
-
- if(bgChanged || bounds == null) {
- bounds = new Rectangle(0, 0, getWidth(), getHeight());
- bgChanged = false;
- }
- // g2d.clearRect(bounds.x-5, bounds.y-5, bounds.x + bounds.width + 5, bounds.y + bounds.height + 5);
- g2d.clearRect(0, 0, getWidth(), getHeight());
-
- g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
- RenderingHints.VALUE_ANTIALIAS_ON);
- g2d.setColor(outerColor);
- g2d.setComposite(opaque);
- g2d.setStroke(solid);
- g2d.draw(gp);
- g2d.setPaint(gradient);
-
- if(!bgChanged) {
- bounds = gp.getBounds();
- } else {
- bounds = new Rectangle(0, 0, getWidth(), getHeight());
- bgChanged = false;
- }
- gradient = new GradientPaint(bounds.x, bounds.y, gradientColorA,
- bounds.x + bounds.width, bounds.y + bounds.height,
- gradientColorB, true);
- g2d.setComposite(blend);
- g2d.fill(gp);
-
- if (g2d == BufferG2D) {
- repaint();
- }
- ++frame;
- Thread.yield();
- }
- if (g2d != null) {
- g2d.dispose();
- }
- }
-
- public void paint(Graphics g) {
- synchronized (this) {
- Graphics2D g2d = (Graphics2D) g;
- if (img != null) {
- int imgw = img.getWidth();
- int imgh = img.getHeight();
- g2d.setComposite(AlphaComposite.Src);
- g2d.drawImage(img, null, 0, 0);
- }
- }
- }
- }
-