Class PreloaderEMF

    • Field Detail

      • EMF_SIG_LENGTH

        protected static final int EMF_SIG_LENGTH
        Length of the EMF header
        See Also:
        Constant Field Values
      • SIGNATURE_OFFSET

        private static final int SIGNATURE_OFFSET
        offset to signature
        See Also:
        Constant Field Values
      • HRES_PIXEL_OFFSET

        private static final int HRES_PIXEL_OFFSET
        offset to horizontal resolution in pixel
        See Also:
        Constant Field Values
      • VRES_PIXEL_OFFSET

        private static final int VRES_PIXEL_OFFSET
        offset to vertical resolution in pixel
        See Also:
        Constant Field Values
      • HRES_MM_OFFSET

        private static final int HRES_MM_OFFSET
        offset to horizontal resolution in mm
        See Also:
        Constant Field Values
      • VRES_MM_OFFSET

        private static final int VRES_MM_OFFSET
        offset to vertical resolution in mm
        See Also:
        Constant Field Values
    • Constructor Detail

      • PreloaderEMF

        public PreloaderEMF()
    • Method Detail

      • 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. An ImageException 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 image
        src - a image source the image is loaded from
        context - 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:
        java.io.IOException - if an I/O error occurs while preloading the image
        ImageException - if an error occurs while preloading the image