org.apache.xmlgraphics.image.loader.impl
Class PreloaderGIF
java.lang.Object
org.apache.xmlgraphics.image.loader.impl.AbstractImagePreloader
org.apache.xmlgraphics.image.loader.impl.PreloaderGIF
- All Implemented Interfaces:
- ImagePreloader
public class PreloaderGIF
- extends AbstractImagePreloader
Image preloader for GIF images.
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
PreloaderGIF
public PreloaderGIF()
preloadImage
public ImageInfo preloadImage(String uri,
Source src,
ImageContext context)
throws IOException
- "Preloads" an image, i.e. indentifies whether the source image is supported by this
implementation and determines the image's intrinsic size and possibly some additional
information. The image is usually not fully loaded at this time to conserve memory.
The method returns null if the image was not identified. An
ImageException
is only
thrown if the image is identified but some error has happened while working on the file.
- Parameters:
uri
- the original (unresolved) URI of the imagesrc
- a image source the image is loaded fromcontext
- the context object that provides configuration information
- Returns:
- an image info object with the basic information about an image or null if the
image is not supported by this implementation
- Throws:
IOException
- if an I/O error occurs while preloading the image
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