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package java.awt.image;

import java.awt.Image;
import java.util.List;


This interface is designed to be an optional additional API supported by some implementations of Image to allow them to provide alternate images for various rendering resolutions. The various Graphics.drawImage(...) variant methods will consult the methods of this interface if it is implemented on the argument Image object in order to choose the best representation to use for each rendering operation. 
 The MultiResolutionImage interface should be implemented by any subclass of java.awt.Image whose instances are intended to provide image resolution variants according to the given image width and height. For convenience, toolkit images obtained from Toolkit.getImage(String name) and Toolkit.getImage(URL url) will implement this interface on platforms that support naming conventions for resolution variants of stored image media and the AbstractMultiResolutionImage and BaseMultiResolutionImage classes are provided to facilitate easy construction of custom multi-resolution images from a list of related images. 
See Also:
Since:9
/**
 * This interface is designed to be an optional additional API supported by
 * some implementations of {@link java.awt.Image} to allow them to provide
 * alternate images for various rendering resolutions. The various
 * {@code Graphics.drawImage(...)} variant methods will consult the methods
 * of this interface if it is implemented on the argument {@code Image} object
 * in order to choose the best representation to use for each rendering operation.
 * <p>
 * The {@code MultiResolutionImage} interface should be implemented by any
 * subclass of {@code java.awt.Image} whose instances are intended to provide
 * image resolution variants according to the given image width and height.
 * For convenience, toolkit images obtained from
 * {@code Toolkit.getImage(String name)} and {@code Toolkit.getImage(URL url)}
 * will implement this interface on platforms that support naming conventions
 * for resolution variants of stored image media and the
 * {@code AbstractMultiResolutionImage} and {@code BaseMultiResolutionImage}
 * classes are provided to facilitate easy construction of custom multi-resolution
 * images from a list of related images.
 *
 * @see java.awt.Image
 * @see java.awt.image.AbstractMultiResolutionImage
 * @see java.awt.image.BaseMultiResolutionImage
 * @see java.awt.Toolkit#getImage(java.lang.String filename)
 * @see java.awt.Toolkit#getImage(java.net.URL url)
 *
 * @since 9
 */
public interface MultiResolutionImage {

    
Gets a specific image that is the best variant to represent
this logical image at the indicated size.

Params:
  • destImageWidth – the width of the destination image, in pixels.
  • destImageHeight – the height of the destination image, in pixels.
Throws:
Returns:image resolution variant.
Since:9
/**
     * Gets a specific image that is the best variant to represent
     * this logical image at the indicated size.
     *
     * @param destImageWidth the width of the destination image, in pixels.
     * @param destImageHeight the height of the destination image, in pixels.
     * @return image resolution variant.
     * @throws IllegalArgumentException if {@code destImageWidth} or
     *         {@code destImageHeight} is less than or equal to zero, infinity,
     *         or NaN.
     *
     * @since 9
     */
    Image getResolutionVariant(double destImageWidth, double destImageHeight);

    
Gets a readable list of all resolution variants.
The list must be nonempty and contain at least one resolution variant.


Note that many implementations might return an unmodifiable list.

Returns:list of resolution variants.
Since:9
/**
     * Gets a readable list of all resolution variants.
     * The list must be nonempty and contain at least one resolution variant.
     * <p>
     * Note that many implementations might return an unmodifiable list.
     *
     * @return list of resolution variants.
     * @since 9
     */
    public List<Image> getResolutionVariants();
}