public PDLab() 
{
        array = new COSArray();
        dictionary = new COSDictionary();
        array.add( COSName.getPDFName( NAME ) );
        array.add( dictionary );
}

Constructor.

 public PDLab(COSArray lab) 
{
        array = lab;
        dictionary = (COSDictionary)array.getObject( 1 );
}

Constructor with array.

Parameters:

lab - The underlying color space.

 public ColorModel createColorModel(int bpc) throws IOException 
{
        throw new IOException( "Not implemented" );
}

Create a Java color model for this colorspace.

 protected ColorSpace createColorSpace() throws IOException 
{
        throw new IOException( "Not implemented" );
}

Create a Java colorspace for this colorspace.

 public PDRange getARange() 
{
        COSArray range = getRangeArray();
        return new PDRange( range, 0 );
}

This will get the valid range for the a component. If none is found then the default will be returned, which is -100 to 100.

 public PDRange getBRange() 
{
        COSArray range = getRangeArray();
        return new PDRange( range, 1 );
}

This will get the valid range for the b component. If none is found then the default will be returned, which is -100 to 100.

 public PDTristimulus getBlackPoint() 
{
        COSArray bp = (COSArray)dictionary.getDictionaryObject( COSName.getPDFName( "BlackPoint" ) );
        if( bp == null )
        {
            bp = new COSArray();
            bp.add( new COSFloat( 0.0f ) );
            bp.add( new COSFloat( 0.0f ) );
            bp.add( new COSFloat( 0.0f ) );
            dictionary.setItem( COSName.getPDFName( "BlackPoint" ), bp );
        }
        return new PDTristimulus( bp );
}

This will return the BlackPoint tristimulus. This is an optional field but has defaults so this will never return null. A default of 0,0,0 will be returned if the pdf does not have any values yet.

 public COSBase getCOSObject() 
{
        return array;
}

Convert this standard java object to a COS object.

 public String getName() 
{
        return NAME;
}

This will return the name of the color space.

 public int getNumberOfComponents() throws IOException 
{
        //BJL
        //hmm is this correct, I am not 100% sure.
        return 3;
}

This will get the number of components that this color space is made up of.

 public PDTristimulus getWhitepoint() 
{
        COSArray wp = (COSArray)dictionary.getDictionaryObject( COSName.getPDFName( "WhitePoint" ) );
        if( wp == null )
        {
            wp = new COSArray();
            wp.add( new COSFloat( 1.0f ) );
            wp.add( new COSFloat( 1.0f ) );
            wp.add( new COSFloat( 1.0f ) );
            dictionary.setItem( COSName.getPDFName( "WhitePoint" ), wp );
        }
        return new PDTristimulus( wp );
}

This will return the whitepoint tristimulus. As this is a required field this will never return null. A default of 1,1,1 will be returned if the pdf does not have any values yet.

 public  void setARange(PDRange range) 
{
        COSArray rangeArray = null;
        //if null then reset to defaults
        if( range == null )
        {
            rangeArray = getRangeArray();
            rangeArray.set( 0, new COSFloat( -100 ) );
            rangeArray.set( 1, new COSFloat( 100 ) );
        }
        else
        {
            rangeArray = range.getCOSArray();
        }
        dictionary.setItem( COSName.getPDFName( "Range" ), rangeArray );
}

This will set the a range for this color space.

 public  void setBRange(PDRange range) 
{
        COSArray rangeArray = null;
        //if null then reset to defaults
        if( range == null )
        {
            rangeArray = getRangeArray();
            rangeArray.set( 2, new COSFloat( -100 ) );
            rangeArray.set( 3, new COSFloat( 100 ) );
        }
        else
        {
            rangeArray = range.getCOSArray();
        }
        dictionary.setItem( COSName.getPDFName( "Range" ), rangeArray );
}

This will set the b range for this color space.

 public  void setBlackPoint(PDTristimulus bp) 
{
        COSBase bpArray = null;
        if( bp != null )
        {
            bpArray = bp.getCOSObject();
        }
        dictionary.setItem( COSName.getPDFName( "BlackPoint" ), bpArray );
}

This will set the BlackPoint tristimulus. As this is a required field this null should not be passed into this function.

 public  void setWhitepoint(PDTristimulus wp) 
{
        COSBase wpArray = wp.getCOSObject();
        if( wpArray != null )
        {
            dictionary.setItem( COSName.getPDFName( "WhitePoint" ), wpArray );
        }
}

This will set the whitepoint tristimulus. As this is a required field this null should not be passed into this function.