Examples of ae.java.awt.image.ImageFilter

ae.java.awt.image.ImageFilter
This class implements a filter for the set of interface methods that are used to deliver data from an ImageProducer to an ImageConsumer. It is meant to be used in conjunction with a FilteredImageSource object to produce filtered versions of existing images. It is a base class that provides the calls needed to implement a "Null filter" which has no effect on the data being passed through. Filters should subclass this class and override the methods which deal with the data that needs to be filtered and modify it as necessary. @see FilteredImageSource @see ImageConsumer @author Jim Graham

    public synchronized void addConsumer(ImageConsumer ic) {
        if (proxies == null) {
            proxies = new Hashtable();
        }
        if (!proxies.containsKey(ic)) {
            ImageFilter imgf = filter.getFilterInstance(ic);
            proxies.put(ic, imgf);
            src.addConsumer(imgf);
        }
    }

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     *
     * @see ImageConsumer
     */
    public synchronized void removeConsumer(ImageConsumer ic) {
        if (proxies != null) {
            ImageFilter imgf = (ImageFilter) proxies.get(ic);
            if (imgf != null) {
                src.removeConsumer(imgf);
                proxies.remove(ic);
                if (proxies.isEmpty()) {
                    proxies = null;

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     */
    public void startProduction(ImageConsumer ic) {
        if (proxies == null) {
            proxies = new Hashtable();
        }
        ImageFilter imgf = (ImageFilter) proxies.get(ic);
        if (imgf == null) {
            imgf = filter.getFilterInstance(ic);
            proxies.put(ic, imgf);
        }
        src.startProduction(imgf);

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     *
     * @see ImageConsumer
     */
    public void requestTopDownLeftRightResend(ImageConsumer ic) {
        if (proxies != null) {
            ImageFilter imgf = (ImageFilter) proxies.get(ic);
            if (imgf != null) {
                imgf.resendTopDownLeftRight(src);
            }
        }
    }

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     * @see        ae.java.awt.Image#SCALE_REPLICATE
     * @see        ae.java.awt.Image#SCALE_AREA_AVERAGING
     * @since      JDK1.1
     */
    public Image getScaledInstance(int width, int height, int hints) {
        ImageFilter filter;
        if ((hints & (SCALE_SMOOTH | SCALE_AREA_AVERAGING)) != 0) {
            filter = new AreaAveragingScaleFilter(width, height);
        } else {
            filter = new ReplicateScaleFilter(width, height);
        }

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Related Classes of ae.java.awt.image.ImageFilter

ae.java.awt.Image

ae.java.awt.image.FilteredImageSource

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