com.lowagie.text.pdf.PRIndirectReference Java Examples

/**
 * Reuses an existing image.
 * 
 * @param ref the reference to the image dictionary
 * @throws BadElementException on error
 * @return the image
 */
public static Image getInstance(PRIndirectReference ref) throws BadElementException {
	PdfDictionary dic = (PdfDictionary) PdfReader.getPdfObjectRelease(ref);
	int width = ((PdfNumber) PdfReader.getPdfObjectRelease(dic.get(PdfName.WIDTH))).intValue();
	int height = ((PdfNumber) PdfReader.getPdfObjectRelease(dic.get(PdfName.HEIGHT))).intValue();
	Image imask = null;
	PdfObject obj = dic.get(PdfName.SMASK);
	if (obj != null && obj.isIndirect()) {
		imask = getInstance((PRIndirectReference) obj);
	} else {
		obj = dic.get(PdfName.MASK);
		if (obj != null && obj.isIndirect()) {
			PdfObject obj2 = PdfReader.getPdfObjectRelease(obj);
			if (obj2 instanceof PdfDictionary) {
				imask = getInstance((PRIndirectReference) obj);
			}
		}
	}
	Image img = new ImgRaw(width, height, 1, 1, null);
	img.imageMask = imask;
	img.directReference = ref;
	return img;
}
 

@Override
public void invoke(PdfContentStreamProcessor processor, PdfLiteral operator, ArrayList operands) {
	PdfName dictionaryName = (PdfName) operands.get(0);
	PdfDictionary extGState = processor.resources.getAsDict(PdfName.EXTGSTATE);
	if (extGState == null) {
		throw new IllegalArgumentException("Resources do not contain ExtGState entry. Unable to process operator " + operator);
	}
	PdfDictionary gsDic = extGState.getAsDict(dictionaryName);
	if (gsDic == null) {
		throw new IllegalArgumentException(dictionaryName + " is an unknown graphics state dictionary");
	}

	// at this point, all we care about is the FONT entry in the GS dictionary
	PdfArray fontParameter = gsDic.getAsArray(PdfName.FONT);
	if (fontParameter != null) {
		CMapAwareDocumentFont font = new CMapAwareDocumentFont((PRIndirectReference) fontParameter.getPdfObject(0));
		float size = fontParameter.getAsNumber(1).floatValue();

		processor.gs().font = font;
		processor.gs().fontSize = size;
	}
}
 

/**
 * Reuses an existing image.
 * @param ref the reference to the image dictionary
 * @throws BadElementException on error
 * @return the image
 */    
public static Image getInstance(PRIndirectReference ref) throws BadElementException {
    PdfDictionary dic = (PdfDictionary)PdfReader.getPdfObjectRelease(ref);
    int width = ((PdfNumber)PdfReader.getPdfObjectRelease(dic.get(PdfName.WIDTH))).intValue();
    int height = ((PdfNumber)PdfReader.getPdfObjectRelease(dic.get(PdfName.HEIGHT))).intValue();
    Image imask = null;
    PdfObject obj = dic.get(PdfName.SMASK);
    if (obj != null && obj.isIndirect()) {
        imask = getInstance((PRIndirectReference)obj);
    }
    else {
        obj = dic.get(PdfName.MASK);
        if (obj != null && obj.isIndirect()) {
            PdfObject obj2 = PdfReader.getPdfObjectRelease(obj);
            if (obj2 instanceof PdfDictionary)
                imask = getInstance((PRIndirectReference)obj);
        }
    }
    Image img = new ImgRaw(width, height, 1, 1, null);
    img.imageMask = imask;
    img.directReference = ref;
    return img;
}
 

public void invoke(PdfContentStreamProcessor processor, PdfLiteral operator, ArrayList operands) {
	PdfName dictionaryName = (PdfName) operands.get(0);
	PdfDictionary extGState = processor.resources.getAsDict(PdfName.EXTGSTATE);
	if (extGState == null) {
		throw new IllegalArgumentException(
				"Resources do not contain ExtGState entry. Unable to process operator " + operator);
	}
	PdfDictionary gsDic = extGState.getAsDict(dictionaryName);
	if (gsDic == null) {
		throw new IllegalArgumentException(dictionaryName + " is an unknown graphics state dictionary");
	}

	// at this point, all we care about is the FONT entry in the GS dictionary
	PdfArray fontParameter = gsDic.getAsArray(PdfName.FONT);
	if (fontParameter != null) {
		CMapAwareDocumentFont font = new CMapAwareDocumentFont(
				(PRIndirectReference) fontParameter.getPdfObject(0));
		float size = fontParameter.getAsNumber(1).floatValue();

		processor.gs().font = font;
		processor.gs().fontSize = size;
	}
}
 

@Override
public void invoke(PdfContentStreamProcessor processor, PdfLiteral operator, ArrayList operands) {
	PdfName fontResourceName = (PdfName) operands.get(0);
	float size = ((PdfNumber) operands.get(1)).floatValue();

	PdfDictionary fontsDictionary = processor.resources.getAsDict(PdfName.FONT);
	CMapAwareDocumentFont font = new CMapAwareDocumentFont((PRIndirectReference) fontsDictionary.get(fontResourceName));

	processor.gs().font = font;
	processor.gs().fontSize = size;

}
 

public void invoke(PdfContentStreamProcessor processor, PdfLiteral operator, ArrayList operands) {
	PdfName fontResourceName = (PdfName) operands.get(0);
	float size = ((PdfNumber) operands.get(1)).floatValue();

	PdfDictionary fontsDictionary = processor.resources.getAsDict(PdfName.FONT);
	CMapAwareDocumentFont font = new CMapAwareDocumentFont(
			(PRIndirectReference) fontsDictionary.get(fontResourceName));

	processor.gs().font = font;
	processor.gs().fontSize = size;

}
 

private byte[] readContentBytes(final PdfObject contentObject) throws IOException {
	final byte[] result;
	switch (contentObject.type()) {
	case PdfObject.INDIRECT:
		final PRIndirectReference ref = (PRIndirectReference) contentObject;
		final PdfObject directObject = PdfReader.getPdfObject(ref);
		result = readContentBytes(directObject);
		break;
	case PdfObject.STREAM:
		final PRStream stream = (PRStream) PdfReader.getPdfObject(contentObject);
		result = PdfReader.getStreamBytes(stream);
		break;
	case PdfObject.ARRAY:
		// Stitch together all content before calling processContent(),
		// because
		// processContent() resets state.
		final ByteArrayOutputStream allBytes = new ByteArrayOutputStream();
		final PdfArray contentArray = (PdfArray) contentObject;
		final ListIterator<?> iter = contentArray.listIterator();
		while (iter.hasNext()) {
			final PdfObject element = (PdfObject) iter.next();
			allBytes.write(readContentBytes(element));
		}
		result = allBytes.toByteArray();
		break;
	default:
		final String msg = "Unable to handle Content of type " + contentObject.getClass();
		throw new IllegalStateException(msg);
	}
	return result;
}
 

private PdfObject getPdfObjectForToken(Token token, Map<String, Long> knownObjects, PdfReader reader, PdfWriter writer)
		throws IOException {
	String digest = getTokenDigest(token);
	Long objectNumber = knownObjects.get(digest);
	if (objectNumber == null) {
		PdfStream ps = new PdfStream(token.getEncoded());
		return writer.addToBody(ps, false).getIndirectReference();
	} else {
		return new PRIndirectReference(reader, objectNumber.intValue());
	}
}