public class PreloaderImageIO extends AbstractImagePreloader
Note: The implementation relies on the presence of a working ImageIO implementation which provides accurate image metadata. This is particularly important for PNG image because the PNG loader relies on that.
DEFAULT_PRIORITY
Constructor and Description |
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PreloaderImageIO() |
Modifier and Type | Method and Description |
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int |
getPriority()
Returns the priority of the preloader.
|
ImageInfo |
preloadImage(java.lang.String uri,
javax.xml.transform.Source src,
ImageContext context)
"Preloads" an image, i.e.
|
getHeader
public ImageInfo preloadImage(java.lang.String uri, javax.xml.transform.Source src, ImageContext context) throws java.io.IOException, ImageException
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 informationImageException
java.io.IOException
- if an I/O error occurs while preloading the imagepublic int getPriority()
getPriority
in interface ImagePreloader
getPriority
in class AbstractImagePreloader
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