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java.lang.Objectorg.apache.xmlgraphics.image.loader.impl.AbstractImagePreloader
org.apache.xmlgraphics.image.loader.impl.PreloaderGIF
Image preloader for GIF images.
Field Summary |
Fields inherited from interface org.apache.xmlgraphics.image.loader.spi.ImagePreloader |
DEFAULT_PRIORITY |
Constructor Summary | |
PreloaderGIF()
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Method Summary | |
ImageInfo |
preloadImage(java.lang.String uri,
javax.xml.transform.Source src,
ImageContext context)
"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. |
Methods inherited from class org.apache.xmlgraphics.image.loader.impl.AbstractImagePreloader |
getHeader, getPriority |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public PreloaderGIF()
Method Detail |
public ImageInfo preloadImage(java.lang.String uri, javax.xml.transform.Source src, ImageContext context) throws java.io.IOException
ImageException
is only
thrown if the image is identified but some error has happened while working on the file.
uri
- the original (unresolved) URI of the imagesrc
- a image source the image is loaded fromcontext
- the context object that provides configuration information
java.io.IOException
- if an I/O error occurs while preloading the image
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