Example usage for org.apache.pdfbox.pdmodel.graphics.color PDICCBased getPDStream

Introduction

In this page you can find the example usage for org.apache.pdfbox.pdmodel.graphics.color PDICCBased getPDStream.

Prototype

public PDStream getPDStream() 

Source Link

Document

Get the underlying ICC profile stream.

Usage

From source file:org.apache.padaf.preflight.graphics.color.StandardColorSpaceHelper.java

License:Apache License

/**
 * Method called by the processAllColorSpace if the ColorSpace to check is a
 * ICCBased color space. Because this kind of ColorSpace can have alternate
 * color space, the processAllColorSpace is called to check this alternate
 * color space. (Pattern is forbidden as Alternate Color Space)
 * // w w w  .j  a  va  2 s .  c  om
 * @param pdcs
 *          the color space object to check.
 * @param result
 *          the list of error to update if the validation fails.
 * @return true if the color space is valid, false otherwise.
 */
protected boolean processICCBasedColorSpace(PDColorSpace pdcs, List<ValidationError> result) {
    PDICCBased iccBased = (PDICCBased) pdcs;
    try {
        ICC_Profile iccp = ICC_Profile.getInstance(iccBased.getPDStream().getByteArray());
        if (iccp == null) {
            result.add(new ValidationError(ERROR_GRAPHIC_INVALID_COLOR_SPACE_ICCBASED,
                    "Unable to read ICCBase color space "));
            return false;
        }
        List<PDColorSpace> altCs = iccBased.getAlternateColorSpaces();
        for (PDColorSpace altpdcs : altCs) {
            if (altpdcs != null) {

                ColorSpaces altCsId = ColorSpaces.valueOf(altpdcs.getName());
                if (altCsId == ColorSpaces.Pattern) {
                    result.add(new ValidationError(ERROR_GRAPHIC_INVALID_PATTERN_COLOR_SPACE_FORBIDDEN,
                            "Pattern is forbidden as AlternateColorSpace of a ICCBased"));
                    return false;
                }

                /*
                 * According to the ISO-19005-1:2005
                 * 
                 * A conforming reader shall render ICCBased colour spaces as specified 
                 * by the ICC specification, and shall not use the Alternate colour space 
                 * specified in an ICC profile stream dictionary
                 * 
                 * We don't check the alternate ColorSpaces
                 */
            }
        }
    } catch (IOException e) {
        result.add(new ValidationError(ERROR_GRAPHIC_INVALID_COLOR_SPACE,
                "Unable to read ICCBase color space : " + e.getMessage()));
        return false;
    }

    return true;
}

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