Examples of java.awt.image.AreaAveragingScaleFilter

java.awt.image.AreaAveragingScaleFilter
An ImageFilter class for scaling images using a simple area averaging algorithm that produces smoother results than the nearest neighbor algorithm.
This class extends the basic ImageFilter Class to scale an existing image and provide a source for a new image containing the resampled image. The pixels in the source image are blended to produce pixels for an image of the specified size. The blending process is analogous to scaling up the source image to a multiple of the destination size using pixel replication and then scaling it back down to the destination size by simply averaging all the pixels in the supersized image that fall within a given pixel of the destination image. If the data from the source is not delivered in TopDownLeftRight order then the filter will back off to a simple pixel replication behavior and utilize the requestTopDownLeftRightResend() method to refilter the pixels in a better way at the end.
It is meant to be used in conjunction with a FilteredImageSource object to produce scaled versions of existing images. Due to implementation dependencies, there may be differences in pixel values of an image filtered on different platforms. @see FilteredImageSource @see ReplicateScaleFilter @see ImageFilter @version 1.16 11/17/05 @author Jim Graham


        if (img.getWidth(observer) == width && img.getHeight(observer) == height)
            return drawImage(img, x, y, bgcolor, observer);


        return drawImage(new ToolkitImage(new FilteredImageSource(img.getSource(),
            new AreaAveragingScaleFilter(width, height))), x, y, bgcolor, observer);
    }

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        if (img.getWidth(observer) == width && img.getHeight(observer) == height)
            return drawImage(img, x, y, observer);


        return drawImage(new ToolkitImage(new FilteredImageSource(img.getSource(),
            new AreaAveragingScaleFilter(width, height))), x, y, observer);
    }

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     *      java.awt.Color, java.awt.image.ImageObserver)
     */
    public final boolean drawImage(Image image, int x, int y, int width, int height, Color bgcolor,
                                   ImageObserver observer) {
        return drawImage(
            new ToolkitImage(new FilteredImageSource(image.getSource(), new AreaAveragingScaleFilter(width, height))),
            x,
            y, bgcolor, observer);
    }

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     * @return boolean
     * @see java.awt.Graphics#drawImage(java.awt.Image, int, int, int, int, java.awt.image.ImageObserver)
     */
    public final boolean drawImage(Image image, int x, int y, int width, int height, ImageObserver observer) {
        return drawImage(
            new ToolkitImage(new FilteredImageSource(image.getSource(), new AreaAveragingScaleFilter(width, height))),
            x,
            y, observer);
    }

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    public abstract int getHeight(ImageObserver observer);


    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);
        }
        ImageProducer producer = new FilteredImageSource(getSource(), filter);
        return Toolkit.getDefaultToolkit().createImage(producer);

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     * @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);
  }
  ImageProducer prod;
  prod = new FilteredImageSource(getSource(), filter);

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     * @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);
        }
        ImageProducer prod;
        prod = new FilteredImageSource(getSource(), filter);

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    public abstract int getHeight(ImageObserver observer);


    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);
        }
        ImageProducer producer = new FilteredImageSource(getSource(), filter);
        return Toolkit.getDefaultToolkit().createImage(producer);

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    public abstract int getHeight(ImageObserver observer);


    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);
        }
        ImageProducer producer = new FilteredImageSource(getSource(), filter);
        return Toolkit.getDefaultToolkit().createImage(producer);

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     * @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);
        }
        ImageProducer prod;
        prod = new FilteredImageSource(getSource(), filter);

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org.jnode.awt.util.AbstractSurfaceGraphics

org.jnode.awt.util.BasicSurfaceGraphics

java.awt.Image

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