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java.lang.Objectorg.apache.xmlgraphics.image.loader.impl.AbstractImagePreloader
org.apache.xmlgraphics.image.loader.impl.PreloaderJPEG
Image preloader for JPEG images.
Field Summary |
Fields inherited from interface org.apache.xmlgraphics.image.loader.impl.JPEGConstants |
APP0, APP1, APP2, APPD, APPE, APPF, EOI, MARK, NULL, SOF0, SOF1, SOF2, SOFA, SOI, SOS |
Fields inherited from interface org.apache.xmlgraphics.image.loader.spi.ImagePreloader |
DEFAULT_PRIORITY |
Constructor Summary | |
PreloaderJPEG()
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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. |
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 PreloaderJPEG()
Method Detail |
public ImageInfo preloadImage(java.lang.String uri, javax.xml.transform.Source src, ImageContext context) throws java.io.IOException, ImageException
preloadImage
in interface ImagePreloader
uri
- the original (unresolved) URI of the imagesrc
- a image source the image is loaded fromcontext
- the context object that provides configuration information
ImageException
java.io.IOException
- if an I/O error occurs while preloading the image
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