ImageGenerator does no longer extend java.awt.Window.
Should work in headless mode now.
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hns
parent
c07fc06de4
commit
63f7a2e4df
2 changed files with 121 additions and 98 deletions
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@ -6,134 +6,163 @@ package helma.image;
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import java.awt.*;
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import java.awt.image.*;
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import java.net.URL;
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import java.net.MalformedURLException;
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/**
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* This creates an invisible frame in order to be able to create images
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* from Java. (Java needs a window context in order to user the Image class).
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*/
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public class ImageGenerator extends Window {
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public class ImageGenerator {
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public ImageGenerator () {
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super (new Frame() {
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public void setVisible (boolean b) {
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// This frame can never be shown
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}
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public synchronized void dispose() {
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try {
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getToolkit().getSystemEventQueue();
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super.dispose();
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} catch (Exception e) {
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// untrusted code not allowed to dispose
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}
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}
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}
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);
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setBounds (0, 0, 1, 1);
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setVisible (true);
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// nothing to do
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}
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public ImageWrapper createPaintableImage (int w, int h) {
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Image img = createImage (w, h);
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Image img = new BufferedImage (w, h, BufferedImage.TYPE_INT_RGB);
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Graphics g = img.getGraphics ();
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ImageWrapper rimg = null;
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try {
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rimg = new SunImageWrapper (img, g, w, h, this);
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} catch (Exception x) {
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System.err.println ("Can't create image: "+x);
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}
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return rimg;
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}
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public ImageWrapper createPaintableImage (byte src[]) {
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ImageWrapper rimg = null;
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MediaTracker tracker = new MediaTracker (this);
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try {
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Image img1 = Toolkit.getDefaultToolkit ().createImage (src);
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tracker.addImage (img1, 0);
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tracker.waitForAll ();
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int w = img1.getWidth (null);
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int h = img1.getHeight (null);
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Image img = createImage (w, h);
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ImageLoader loader = new ImageLoader (img1);
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loader.load ();
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int w = loader.getWidth ();
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int h = loader.getHeight ();
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Image img = new BufferedImage (w, h, BufferedImage.TYPE_INT_RGB);
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Graphics g = img.getGraphics ();
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g.drawImage (img1, 0, 0, null);
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rimg = new SunImageWrapper (img, g, w, h, this);
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} catch (Exception x) {
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System.err.println ("Can't create image: "+x);
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}
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return rimg;
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}
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public ImageWrapper createImage (byte src[]) {
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ImageWrapper rimg = null;
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MediaTracker tracker = new MediaTracker (this);
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try {
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Image img = Toolkit.getDefaultToolkit ().createImage (src);
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tracker.addImage (img, 0);
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tracker.waitForAll ();
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int w = img.getWidth (null);
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int h = img.getHeight (null);
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ImageLoader loader = new ImageLoader (img);
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loader.load ();
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int w = loader.getWidth ();
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int h = loader.getHeight ();
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rimg = new SunImageWrapper (img, null, w, h, this);
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} catch (Exception x) {
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System.err.println ("Can't create image: "+x);
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}
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return rimg;
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}
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public ImageWrapper createPaintableImage (String urlstring) {
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public ImageWrapper createPaintableImage (String urlstring) throws MalformedURLException {
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ImageWrapper rimg = null;
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MediaTracker tracker = new MediaTracker (this);
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try {
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URL url = new URL (urlstring);
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Image img1 = Toolkit.getDefaultToolkit ().createImage (url);
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tracker.addImage (img1, 0);
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tracker.waitForAll ();
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int w = img1.getWidth (null);
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int h = img1.getHeight (null);
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Image img = createImage (w, h);
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ImageLoader loader = new ImageLoader (img1);
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loader.load ();
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int w = loader.getWidth ();
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int h = loader.getHeight ();
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Image img = new BufferedImage (w, h, BufferedImage.TYPE_INT_RGB);
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Graphics g = img.getGraphics ();
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g.drawImage (img1, 0, 0, null);
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rimg = new SunImageWrapper (img, g, w, h, this);
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} catch (Exception x) {
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System.err.println ("Can't create image: "+x);
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x.printStackTrace ();
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}
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return rimg;
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}
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public ImageWrapper createPaintableImage (ImageWrapper iw, ImageFilter filter) {
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ImageWrapper rimg = null;
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MediaTracker tracker = new MediaTracker (this);
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try {
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FilteredImageSource fis = new FilteredImageSource (iw.getSource(), filter);
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Image img1 = createImage (fis);
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tracker.addImage (img1, 0);
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tracker.waitForAll ();
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int w = img1.getWidth (null);
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int h = img1.getHeight (null);
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Image img = createImage (w, h);
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Image img1 = Toolkit.getDefaultToolkit().createImage (fis);
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ImageLoader loader = new ImageLoader (img1);
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loader.load ();
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int w = loader.getWidth ();
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int h = loader.getHeight ();
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Image img = new BufferedImage (w, h, BufferedImage.TYPE_INT_RGB);
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Graphics g = img.getGraphics ();
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g.drawImage (img1, 0, 0, null);
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rimg = new SunImageWrapper (img, g, w, h, this);
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} catch (Exception x) {
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System.err.println ("Can't create image: "+x);
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}
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return rimg;
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}
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public Image createImage (String filename) {
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Image img = null;
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MediaTracker tracker = new MediaTracker (this);
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try {
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img = Toolkit.getDefaultToolkit ().createImage (filename);
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tracker.addImage (img, 0);
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tracker.waitForAll ();
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} catch (Exception x) {
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System.err.println ("Can't create image: "+x);
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x.printStackTrace ();
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}
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ImageLoader loader = new ImageLoader (img);
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loader.load ();
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return img;
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}
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public Image createImage (ImageProducer producer) {
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Image img = null;
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img = Toolkit.getDefaultToolkit ().createImage (producer);
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ImageLoader loader = new ImageLoader (img);
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loader.load ();
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return img;
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}
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class ImageLoader implements ImageObserver {
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Image img;
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int w, h;
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ImageLoader (Image img) {
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this.img = img;
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}
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int getWidth () {
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return w;
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}
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int getHeight () {
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return h;
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}
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synchronized void load () {
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w = img.getWidth(this);
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h = img.getHeight (this);
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if (w == -1 || h == -1) try {
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wait (30000);
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} catch (InterruptedException x) {
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return;
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}
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// if width and height haven't been set, throw tantrum
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if (w == -1 || h == -1) {
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throw new RuntimeException ("Error loading image");
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}
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}
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public synchronized boolean imageUpdate(Image img,
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int infoflags,
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int x,
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int y,
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int width,
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int height) {
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if (w == -1 && (infoflags & WIDTH) > 0)
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w = width;
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if (h == -1 && (infoflags & HEIGHT) > 0)
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h = height;
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if (h > -1 && w > -1 && (infoflags & ALLBITS) > 0) {
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// we know all we want to know. notify waiting thread that
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// the image is loaded and ready to be used.
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notifyAll ();
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return false;
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}
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// check if there was an error
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if ((infoflags & ERROR) > 0) {
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notifyAll ();
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return false;
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}
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// TODO: If image production was aborted, but no error was reported,
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// we might want to start production again. For now, we just give up.
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if ((infoflags & ABORT) > 0) {
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notifyAll ();
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return false;
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}
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return true;
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}
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}
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}
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@ -19,9 +19,8 @@ import java.io.FileOutputStream;
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public class SunImageWrapper extends ImageWrapper {
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public SunImageWrapper (Image img, Graphics g, int width, int height,
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ImageGenerator imggen) throws ClassNotFoundException {
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ImageGenerator imggen) {
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super (img, g, width, height, imggen);
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Class.forName ("com.sun.jimi.core.Jimi");
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}
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@ -39,8 +38,6 @@ public class SunImageWrapper extends ImageWrapper {
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}
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}
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img = imggen.createImage (new MemoryImageSource(w, h, pix, 0, w));
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// ColorReducer redux = new ColorReducer (colors, true);
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// img = redux.getColorReducedImage (img);
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} catch (Exception x) {
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// throw new RuntimeException (x.getMessage ());
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}
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@ -77,9 +74,6 @@ public class SunImageWrapper extends ImageWrapper {
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// Acme gif encoder
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GifEncoder enc = new GifEncoder (img, fout);
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enc.encode ();
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// new alternative gif encoder
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// GIFEncoder enc = new GIFEncoder (img);
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// enc.Write (fout);
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fout.close ();
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} else {
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Jimi.putImage (img, filename);
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