Class PreloaderTIFF
- java.lang.Object
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- org.apache.xmlgraphics.image.loader.impl.AbstractImagePreloader
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- org.apache.xmlgraphics.image.loader.impl.PreloaderTIFF
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- All Implemented Interfaces:
ImagePreloader
public class PreloaderTIFF extends AbstractImagePreloader
Image preloader for TIFF images.Note: The implementation relies on the TIFF codec code in Apache XML Graphics Commons for access to the TIFF directory.
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Field Summary
Fields Modifier and Type Field Description private static org.apache.commons.logging.Log
log
private static int
TIFF_SIG_LENGTH
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Fields inherited from interface org.apache.xmlgraphics.image.loader.spi.ImagePreloader
DEFAULT_PRIORITY
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Constructor Summary
Constructors Constructor Description PreloaderTIFF()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description private ImageInfo
createImageInfo(java.lang.String uri, javax.imageio.stream.ImageInputStream in, ImageContext context)
ImageInfo
preloadImage(java.lang.String uri, javax.xml.transform.Source src, ImageContext context)
"Preloads" an image, i.e.-
Methods inherited from class org.apache.xmlgraphics.image.loader.impl.AbstractImagePreloader
getHeader, getPriority
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Field Detail
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log
private static org.apache.commons.logging.Log log
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TIFF_SIG_LENGTH
private static final int TIFF_SIG_LENGTH
- See Also:
- Constant Field Values
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Method Detail
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preloadImage
public ImageInfo preloadImage(java.lang.String uri, javax.xml.transform.Source src, ImageContext context) throws java.io.IOException, ImageException
"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. AnImageException
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:
ImageException
java.io.IOException
- if an I/O error occurs while preloading the image
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createImageInfo
private ImageInfo createImageInfo(java.lang.String uri, javax.imageio.stream.ImageInputStream in, ImageContext context) throws java.io.IOException, ImageException
- Throws:
java.io.IOException
ImageException
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