Class PreloaderBMP
java.lang.Object
org.apache.xmlgraphics.image.loader.impl.AbstractImagePreloader
org.apache.xmlgraphics.image.loader.impl.PreloaderBMP
- All Implemented Interfaces:
ImagePreloader
Image preloader for BMP images.
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Field Summary
FieldsModifier and TypeFieldDescriptionprotected static final int
Length of the BMP headerFields inherited from interface org.apache.xmlgraphics.image.loader.spi.ImagePreloader
DEFAULT_PRIORITY
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionpreloadImage
(String uri, 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 Details
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BMP_SIG_LENGTH
protected static final int BMP_SIG_LENGTHLength of the BMP header- See Also:
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Constructor Details
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PreloaderBMP
public PreloaderBMP()
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Method Details
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preloadImage
public ImageInfo preloadImage(String uri, Source src, ImageContext context) throws 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:
IOException
- if an I/O error occurs while preloading the imageImageException
- if an error occurs while preloading the image
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