Java Code Examples for com.itextpdf.text.pdf.PdfStamper#getOverContent()

/**
 * The OP's original code transformed into Java
 */
void stampTextOriginal(InputStream source, OutputStream target) throws DocumentException, IOException
{
    Date today = new Date();
    PdfReader reader = new PdfReader(source);
    PdfStamper stamper = new PdfStamper(reader, target);
    BaseFont bf = BaseFont.createFont(BaseFont.HELVETICA_BOLD, BaseFont.WINANSI, BaseFont.EMBEDDED);
    int tSize = 24;
    String mark = "DRAFT " + today;
    int angle = 45;
    float height = reader.getPageSizeWithRotation(1).getHeight()/2;
    float width = reader.getPageSizeWithRotation(1).getWidth()/2;
    PdfContentByte cb = stamper.getOverContent(1);
    cb.setColorFill(new BaseColor(255,200,200));
    cb.setFontAndSize(bf, tSize);
    cb.beginText();
    cb.showTextAligned(Element.ALIGN_CENTER, mark, width, height, angle);
    cb.endText();
    stamper.close();
    reader.close();
}
 

/**
 * The OP's code transformed into Java changed with the work-around.
 */
void stampTextChanged(InputStream source, OutputStream target) throws DocumentException, IOException
{
    Date today = new Date();
    PdfReader reader = new PdfReader(source);
    PdfStamper stamper = new PdfStamper(reader, target);
    BaseFont bf = BaseFont.createFont(BaseFont.HELVETICA_BOLD, BaseFont.WINANSI, BaseFont.EMBEDDED);
    int tSize = 24;
    String mark = "DRAFT " + today;
    int angle = 45;
    float height = reader.getPageSizeWithRotation(1).getHeight()/2;
    float width = reader.getPageSizeWithRotation(1).getWidth()/2;
    PdfContentByte cb = stamper.getOverContent(1);
    cb.setFontAndSize(bf, tSize);
    cb.beginText();
    cb.setColorFill(new BaseColor(255,200,200));
    cb.showTextAligned(Element.ALIGN_CENTER, mark, width, height, angle);
    cb.endText();
    stamper.close();
    reader.close();
}
 

/**
 * 水印
 */
public static void setWatermark(MultipartFile src, File dest, String waterMarkName, int permission) throws DocumentException, IOException {
	PdfReader reader = new PdfReader(src.getInputStream());
	PdfStamper stamper = new PdfStamper(reader, new BufferedOutputStream(new FileOutputStream(dest)));
	int total = reader.getNumberOfPages() + 1;
	PdfContentByte content;
	BaseFont base = BaseFont.createFont();
	for (int i = 1; i < total; i++) {
		content = stamper.getOverContent(i);// 在内容上方加水印
		content.beginText();
		content.setTextMatrix(70, 200);
		content.setFontAndSize(base, 30);
		content.setColorFill(BaseColor.GRAY);
		content.showTextAligned(Element.ALIGN_CENTER, waterMarkName, 300, 400, 45);
		content.endText();
	}
	stamper.close();
}
 

/**
 * <a href="http://stackoverflow.com/questions/35082653/adobe-reader-cant-display-unicode-font-of-pdf-added-with-itext">
 * Adobe Reader can't display unicode font of pdf added with iText
 * </a>
 * <br/>
 * <a href="https://www.dropbox.com/s/erkv9wot9d460dg/sampleOriginal.pdf?dl=0">
 * sampleOriginal.pdf
 * </a>
 * <p>
 * Indeed, just like in the iTextSharp version of the code, the resulting file has
 * issues in Adobe Reader. With a different starting file, though, it doesn't, cf.
 * {@link #testAddUnicodeStampEg_01()}.
 * </p>
 * <p>
 * As it eventually turns out, Adobe Reader treats PDF files with composite fonts
 * differently if they claim to be PDF-1.2 like the OP's sample file.
 * </p>
 */
@Test
public void testAddUnicodeStampSampleOriginal() throws DocumentException, IOException
{
    try (   InputStream resource = getClass().getResourceAsStream("sampleOriginal.pdf");
            OutputStream result = new FileOutputStream(new File(RESULT_FOLDER, "sampleOriginal-unicodeStamp.pdf"))  )
    {
        PdfReader reader = new PdfReader(resource);
        PdfStamper stamper = new PdfStamper(reader, result);
        BaseFont bf = BaseFont.createFont("c:/windows/fonts/arialuni.ttf", BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
        PdfContentByte cb = stamper.getOverContent(1);

        Phrase p = new Phrase();
        p.setFont(new Font(bf, 25, Font.NORMAL, BaseColor.BLUE));
        p.add("Sample Text");

        ColumnText.showTextAligned(cb, PdfContentByte.ALIGN_LEFT, p, 200, 200, 0);
        
        stamper.close();
    }
}
 

/**
 * <a href="http://stackoverflow.com/questions/35082653/adobe-reader-cant-display-unicode-font-of-pdf-added-with-itext">
 * Adobe Reader can't display unicode font of pdf added with iText
 * </a>
 * <br/>
 * <a href="https://www.dropbox.com/s/erkv9wot9d460dg/sampleOriginal.pdf?dl=0">
 * sampleOriginal.pdf
 * </a>
 * <p>
 * Indeed, just like in the iTextSharp version of the code, the resulting file has
 * issues in Adobe Reader, cf. {@link #testAddUnicodeStampSampleOriginal()}. With
 * a different starting file, though, it doesn't as this test shows.
 * </p>
 * <p>
 * As it eventually turns out, Adobe Reader treats PDF files with composite fonts
 * differently if they claim to be PDF-1.2 like the OP's sample file.
 * </p>
 */
@Test
public void testAddUnicodeStampEg_01() throws DocumentException, IOException
{
    try (   InputStream resource = getClass().getResourceAsStream("eg_01.pdf");
            OutputStream result = new FileOutputStream(new File(RESULT_FOLDER, "eg_01-unicodeStamp.pdf"))  )
    {
        PdfReader reader = new PdfReader(resource);
        PdfStamper stamper = new PdfStamper(reader, result);

        BaseFont bf = BaseFont.createFont("c:/windows/fonts/arialuni.ttf", BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
        PdfContentByte cb = stamper.getOverContent(1);

        Phrase p = new Phrase();
        p.setFont(new Font(bf, 25, Font.NORMAL, BaseColor.BLUE));
        p.add("Sample Text");

        ColumnText.showTextAligned(cb, PdfContentByte.ALIGN_LEFT, p, 200, 200, 0);
        
        stamper.close();
    }
}
 

/**
 * <a href="http://stackoverflow.com/questions/43870545/filling-a-pdf-with-itextsharp-and-then-hiding-the-base-layer">
 * Filling a PDF with iTextsharp and then hiding the base layer
 * </a>
 * <p>
 * This test shows how to cover all content using a white rectangle.
 * </p>
 */
@Test
public void testHideContenUnderRectangle() throws IOException, DocumentException
{
    try (   InputStream resource = getClass().getResourceAsStream("document.pdf");
            OutputStream result = new FileOutputStream(new File(RESULT_FOLDER, "document-hiddenContent.pdf")))
    {
        PdfReader pdfReader = new PdfReader(resource);
        PdfStamper pdfStamper = new PdfStamper(pdfReader, result);
        for (int page = 1; page <= pdfReader.getNumberOfPages(); page++)
        {
            Rectangle pageSize = pdfReader.getPageSize(page);
            PdfContentByte canvas = pdfStamper.getOverContent(page);
            canvas.setColorFill(BaseColor.WHITE);
            canvas.rectangle(pageSize.getLeft(), pageSize.getBottom(), pageSize.getWidth(), pageSize.getHeight());
            canvas.fill();
        }
        pdfStamper.close();
    }
}
 

/**
 * <a href="https://stackoverflow.com/questions/50121297/missing-colored-area-on-pdf-using-itext-pdf">
 * Missing colored area on pdf using itext pdf
 * </a>
 * <p>
 * This test shows how to mark a whole table row without the
 * marking hiding the existing content or vice versa.
 * </p>
 */
@Test
public void test() throws IOException, DocumentException {
    try (   InputStream resource = getClass().getResourceAsStream("document.pdf");
            OutputStream result = new FileOutputStream(new File(RESULT_FOLDER, "document-marked.pdf"))) {
        PdfReader pdfReader = new PdfReader(resource);
        PdfStamper stamper = new PdfStamper(pdfReader, result);

        PdfContentByte canvas = stamper.getOverContent(1);
        canvas.saveState();
        PdfGState state = new PdfGState();
        state.setBlendMode(new PdfName("Multiply"));
        canvas.setGState(state);
        canvas.setColorFill(BaseColor.YELLOW);
        canvas.rectangle(60, 586, 477, 24);
        canvas.fill();
        canvas.restoreState();

        stamper.close();
    }
}
 

/**
 * <a href="http://stackoverflow.com/questions/43205385/trying-to-draw-an-ellipse-annotation-and-the-border-on-the-edges-goes-thin-and-t">
 * Trying to draw an ellipse annotation and the border on the edges goes thin and thik when i try to roatate pdf itext5
 * </a>
 * <p>
 * This test creates an ellipse annotation with appearance with switched dimensions on a page with rotation.
 * Everything looks ok.
 * </p>
 * @see #testCreateEllipse()
 * @see #testCreateEllipseAppearance()
 * @see #testCreateEllipseOnRotated()
 * @see #testCreateEllipseAppearanceOnRotated()
 */
@Test
public void testCreateCorrectEllipseAppearanceOnRotated() throws IOException, DocumentException
{
    try (   InputStream resourceStream = getClass().getResourceAsStream("/mkl/testarea/itext5/merge/testA4.pdf");
            OutputStream outputStream = new FileOutputStream(new File(RESULT_FOLDER, "testA4-rotated-ellipse-appearance-correct.pdf"))    )
    {
        PdfReader reader = new PdfReader(resourceStream);
        reader.getPageN(1).put(PdfName.ROTATE, new PdfNumber(90));

        PdfStamper stamper = new PdfStamper(reader, outputStream);

        Rectangle rect = new Rectangle(202 + 6f, 300, 200 + 100, 300 + 150);

        PdfAnnotation annotation = PdfAnnotation.createSquareCircle(stamper.getWriter(), rect, null, false);
        annotation.setFlags(PdfAnnotation.FLAGS_PRINT);
        annotation.setColor(BaseColor.RED);
        annotation.setBorderStyle(new PdfBorderDictionary(3.5f, PdfBorderDictionary.STYLE_SOLID));

        PdfContentByte cb = stamper.getOverContent(1);
        PdfAppearance app = cb.createAppearance(rect.getHeight(), rect.getWidth());
        app.setColorStroke(BaseColor.RED);
        app.setLineWidth(3.5);
        app.ellipse( 1.5,  1.5, rect.getHeight() - 1.5, rect.getWidth() - 1.5);
        app.stroke();
        annotation.setAppearance(PdfAnnotation.APPEARANCE_NORMAL, app);

        stamper.addAnnotation(annotation, 1);

        stamper.close();
        reader.close();
    }
}
 

/**
 * pdf 用文字加水印，存在问题，如何支持中文
 * @author eko.zhan at 2018年9月2日 下午1:44:40
 * @throws FileNotFoundException
 * @throws IOException
 * @throws DocumentException
 */
@Test
public void testVisioAsPdfWithText() throws FileNotFoundException, IOException, DocumentException{
	File inputFile = new File("E:/ConvertTester/TestFiles/I_am_a_vsdx.vsdx");
	File outputFile = new File("E:/ConvertTester/TestFiles/I_am_a_vsdx_libreoffice.pdf");
	if (!outputFile.exists()) {
		convert(inputFile, outputFile);
	}
	File destFile = new File("E:/ConvertTester/TestFiles/I_am_a_vsdx_libreoffice_watermark.pdf");
	//转换成 pdf 后利用 itext 加水印 
	PdfReader reader = new PdfReader(new FileInputStream(outputFile));
	PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(destFile));
	int pageNo = reader.getNumberOfPages();
	Font f = new Font(FontFamily.HELVETICA, 28);
	Phrase p = new Phrase("Xiaoi Robot", f);
	for (int i=1;i<=pageNo;i++) {
		PdfContentByte over = stamper.getOverContent(i);
		over.saveState();
		PdfGState gs1 = new PdfGState();
		gs1.setFillOpacity(0.5f);
		over.setGState(gs1);
		ColumnText.showTextAligned(over, Element.ALIGN_CENTER, p, 297, 450, 0);
		over.restoreState();
	}
	stamper.close();
	reader.close();
}
 

void testExt(String resource, float minWidth, float minHeight) throws IOException, DocumentException
{
    String name = new File(resource).getName();
    String target = String.format("%s-freeSpaceExt%.0fx%.0f.pdf", name, minWidth, minHeight);
    InputStream resourceStream = getClass().getResourceAsStream(resource);
    try
    {
        PdfReader reader = new PdfReader(resourceStream);
        System.out.printf("\nFree %.0fx%.0f regions in %s\n", minWidth, minHeight, name);

        Collection<Rectangle2D> rectangles = findExt(reader, minWidth, minHeight, 1);
        print(rectangles);

        PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(new File(RESULT_FOLDER, target)));
        PdfContentByte over = stamper.getOverContent(1);

        enhance(over, rectangles);
        Point2D[] points = getPointsOfInterest(reader.getCropBox(1));
        for (int i = 0; i < points.length; i++)
            enhance(over, rectangles, points[i], colors[i]);

        stamper.close();
    }
    finally
    {
        if (resourceStream != null)
            resourceStream.close();
    }
}
 

void test(String resource, float minWidth, float minHeight) throws IOException, DocumentException
{
    String name = new File(resource).getName();
    String target = String.format("%s-freeSpace%.0fx%.0f.pdf", name, minWidth, minHeight);
    InputStream resourceStream = getClass().getResourceAsStream(resource);
    try
    {
        PdfReader reader = new PdfReader(resourceStream);
        System.out.printf("\nFree %.0fx%.0f regions in %s\n", minWidth, minHeight, name);

        Collection<Rectangle2D> rectangles = find(reader, minWidth, minHeight, 1);
        print(rectangles);

        PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(new File(RESULT_FOLDER, target)));
        PdfContentByte over = stamper.getOverContent(1);

        enhance(over, rectangles);
        Point2D[] points = getPointsOfInterest(reader.getCropBox(1));
        for (int i = 0; i < points.length; i++)
            enhance(over, rectangles, points[i], colors[i]);

        stamper.close();
    }
    finally
    {
        if (resourceStream != null)
            resourceStream.close();
    }
}
 

void mark(InputStream input, OutputStream output, Pattern pattern) throws DocumentException, IOException
{
    PdfReader reader = new PdfReader(input);
    PdfStamper stamper = new PdfStamper(reader, output);
    try {
        PdfReaderContentParser parser = new PdfReaderContentParser(reader);
        for (int pageNr = 1; pageNr <= reader.getNumberOfPages(); pageNr++)
        {
            SearchTextLocationExtractionStrategy strategy = new SearchTextLocationExtractionStrategy(pattern);
            parser.processContent(pageNr, strategy, Collections.emptyMap()).getResultantText();
            Collection<TextRectangle> locations = strategy.getLocations(null);
            if (locations.isEmpty())
                continue;

            PdfContentByte canvas = stamper.getOverContent(pageNr);
            canvas.setRGBColorStroke(255, 255, 0);
            for (TextRectangle location : locations)
            {
                canvas.rectangle(location.getMinX(), location.getMinY(), location.getWidth(), location.getHeight());
            }
            canvas.stroke();
        }
        stamper.close();
    } finally {
        reader.close();
    }
}
 

/**
 * <a href="http://stackoverflow.com/questions/43205385/trying-to-draw-an-ellipse-annotation-and-the-border-on-the-edges-goes-thin-and-t">
 * Trying to draw an ellipse annotation and the border on the edges goes thin and thik when i try to roatate pdf itext5
 * </a>
 * <p>
 * This test creates an ellipse annotation with appearance on a page with rotation.
 * The ellipse position looks ok but it is deformed.
 * This is caused by iText rotating the annotation rectangle but not (how could it?) the appearance rectangle.
 * </p>
 * @see #testCreateEllipse()
 * @see #testCreateEllipseAppearance()
 * @see #testCreateEllipseOnRotated()
 * @see #testCreateCorrectEllipseAppearanceOnRotated()
 */
@Test
public void testCreateEllipseAppearanceOnRotated() throws IOException, DocumentException
{
    try (   InputStream resourceStream = getClass().getResourceAsStream("/mkl/testarea/itext5/merge/testA4.pdf");
            OutputStream outputStream = new FileOutputStream(new File(RESULT_FOLDER, "testA4-rotated-ellipse-appearance.pdf"))    )
    {
        PdfReader reader = new PdfReader(resourceStream);
        reader.getPageN(1).put(PdfName.ROTATE, new PdfNumber(90));

        PdfStamper stamper = new PdfStamper(reader, outputStream);

        Rectangle rect = new Rectangle(202 + 6f, 300, 200 + 100, 300 + 150);

        PdfAnnotation annotation = PdfAnnotation.createSquareCircle(stamper.getWriter(), rect, null, false);
        annotation.setFlags(PdfAnnotation.FLAGS_PRINT);
        annotation.setColor(BaseColor.RED);
        annotation.setBorderStyle(new PdfBorderDictionary(3.5f, PdfBorderDictionary.STYLE_SOLID));

        PdfContentByte cb = stamper.getOverContent(1);
        PdfAppearance app = cb.createAppearance(rect.getWidth(), rect.getHeight());
        app.setColorStroke(BaseColor.RED);
        app.setLineWidth(3.5);
        app.ellipse( 1.5,  1.5, rect.getWidth() - 1.5, rect.getHeight() - 1.5);
        app.stroke();
        annotation.setAppearance(PdfAnnotation.APPEARANCE_NORMAL, app);

        stamper.addAnnotation(annotation, 1);

        stamper.close();
        reader.close();
    }
}
 

/**
 * <a href="http://stackoverflow.com/questions/43205385/trying-to-draw-an-ellipse-annotation-and-the-border-on-the-edges-goes-thin-and-t">
 * Trying to draw an ellipse annotation and the border on the edges goes thin and thik when i try to roatate pdf itext5
 * </a>
 * <p>
 * This test creates an ellipse annotation with appearance on a page without rotation. Everything looks ok.
 * </p>
 * @see #testCreateEllipse()
 * @see #testCreateEllipseOnRotated()
 * @see #testCreateEllipseAppearanceOnRotated()
 * @see #testCreateCorrectEllipseAppearanceOnRotated()
 */
@Test
public void testCreateEllipseAppearance() throws IOException, DocumentException
{
    try (   InputStream resourceStream = getClass().getResourceAsStream("/mkl/testarea/itext5/merge/testA4.pdf");
            OutputStream outputStream = new FileOutputStream(new File(RESULT_FOLDER, "testA4-ellipse-appearance.pdf"))    )
    {
        PdfReader reader = new PdfReader(resourceStream);
        PdfStamper stamper = new PdfStamper(reader, outputStream);

        Rectangle rect = new Rectangle(202 + 6f, 300, 200 + 100, 300 + 150);

        PdfAnnotation annotation = PdfAnnotation.createSquareCircle(stamper.getWriter(), rect, null, false);
        annotation.setFlags(PdfAnnotation.FLAGS_PRINT);
        annotation.setColor(BaseColor.RED);
        annotation.setBorderStyle(new PdfBorderDictionary(3.5f, PdfBorderDictionary.STYLE_SOLID));

        PdfContentByte cb = stamper.getOverContent(1);
        PdfAppearance app = cb.createAppearance(rect.getWidth(), rect.getHeight());
        app.setColorStroke(BaseColor.RED);
        app.setLineWidth(3.5);
        app.ellipse( 1.5,  1.5, rect.getWidth() - 1.5, rect.getHeight() - 1.5);
        app.stroke();
        annotation.setAppearance(PdfAnnotation.APPEARANCE_NORMAL, app);

        stamper.addAnnotation(annotation, 1);

        stamper.close();
        reader.close();
    }
}
 

void markLineBoundaries(String resource, int startPage, int endPage) throws IOException, DocumentException
{
    String name = new File(resource).getName();
    String target = String.format("%s-lines-%s-%s.pdf", name, startPage, endPage);
    InputStream resourceStream = getClass().getResourceAsStream(resource);
    try
    {
        PdfReader reader = new PdfReader(resourceStream);
        PdfReaderContentParser parser = new PdfReaderContentParser(reader);
        System.out.printf("\nLine boundaries in %s\n", name);

        PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(new File(RESULT_FOLDER, target)));
        
        for (int page = startPage; page < endPage; page++)
        {
            System.out.printf("\n   Page %s\n   ", page);
            
            TextLineFinder finder = new TextLineFinder();
            parser.processContent(page, finder);

            PdfContentByte over = stamper.getOverContent(page);
            Rectangle mediaBox = reader.getPageSize(page);
            
            for (float flip: finder.verticalFlips)
            {
                System.out.printf(" %s", flip);
                over.moveTo(mediaBox.getLeft(), flip);
                over.lineTo(mediaBox.getRight(), flip);
            }

            System.out.println();
            over.stroke();
        }

        stamper.close();
    }
    finally
    {
        if (resourceStream != null)
            resourceStream.close();
    }
}
 

/**
     * <a href="http://stackoverflow.com/questions/35630320/itext-java-android-adding-fields-to-existing-pdf">
     * iText - Java Android - Adding fields to existing pdf
     * </a>
     * <p>
     * There actually are two issues in the OP's code:
     * </p>
     * <ol>
     * <li>he creates the fields with empty names
     * <li>he doesn't set border colors for his fields
     * </ol>
     * <p>
     * These issues are fixed in {@link #testAddLikePasquierCorentin()},
     * {@link CheckboxCellEvent}, and {@link MyCellField} below.
     * </p>
     */
    @Test
    public void testAddLikePasquierCorentin() throws IOException, DocumentException
    {
        File myFile = new File(RESULT_FOLDER, "preface-withField.pdf");
        
        try (   InputStream resource = getClass().getResourceAsStream("/mkl/testarea/itext5/extract/preface.pdf");
                OutputStream output = new FileOutputStream(myFile)  )
        {
            PdfReader pdfReader = new PdfReader(resource);

            pdfStamper = new PdfStamper(pdfReader, output);

            PdfContentByte canvas1;
            PdfContentByte canvas2;

            canvas1 = pdfStamper.getOverContent(1);
            canvas2 = pdfStamper.getOverContent(2);

            PdfPCell cellFillFieldPage1 = new PdfPCell();
// change: Use a non-empty name
            cellFillFieldPage1.setCellEvent(new MyCellField("A", 1));
            cellFillFieldPage1.setFixedHeight(15);
            cellFillFieldPage1.setBorder(Rectangle.NO_BORDER);
            cellFillFieldPage1.setVerticalAlignment(Element.ALIGN_MIDDLE);

            PdfPCell cellCheckBoxPage2 = new PdfPCell();
// change: Use a non-empty name different from the one above
            cellCheckBoxPage2.setCellEvent(new CheckboxCellEvent("B", false, 2));
            cellCheckBoxPage2.setBorder(Rectangle.NO_BORDER);

            // ************** PAGE 1 ************** //

            // SET TABLE
            PdfPTable tableSection1Page1 = new PdfPTable(1);
            tableSection1Page1.setTotalWidth(136);
            tableSection1Page1.setWidthPercentage(100.0f);
            tableSection1Page1.setLockedWidth(true);

            // ADD CELLS TO TABLE
            tableSection1Page1.addCell(cellFillFieldPage1);


            // PRINT TABLES
            tableSection1Page1.writeSelectedRows(0, -1, 165, 530, canvas1);


            // ************ PAGE 2 ************ //

            // SET TABLES
            PdfPTable tableSection1Page2 = new PdfPTable(1);
            tableSection1Page2.setTotalWidth(10);
            tableSection1Page2.setWidthPercentage(100.0f);
            tableSection1Page2.setLockedWidth(true);

            // ADD CELLS TO TABLE
            tableSection1Page2.addCell(cellCheckBoxPage2);

            // PRINT TABLES
            tableSection1Page2.writeSelectedRows(0, -1, 182, 536, canvas2);

            // I tried this, but it didn't change anything
            pdfStamper.setFormFlattening(false);

            pdfStamper.close();
            pdfReader.close();
        }
    }
 

/**
 * pdf 用图片加水印
 * @author eko.zhan at 2018年9月2日 下午1:44:58
 * @throws FileNotFoundException
 * @throws IOException
 * @throws DocumentException
 */
@Test
public void testVisioAsPdfWithImg() throws FileNotFoundException, IOException, DocumentException{
	File inputFile = new File("E:/ConvertTester/TestFiles/I_am_a_vsdx.vsdx");
	File outputFile = new File("E:/ConvertTester/TestFiles/I_am_a_vsdx_libreoffice.pdf");
	if (!outputFile.exists()) {
		convert(inputFile, outputFile);
	}
	File destFile = new File("E:/ConvertTester/TestFiles/I_am_a_vsdx_libreoffice_watermark.pdf");
	final String IMG = "D:\\Xiaoi\\logo\\logo.png";
	//转换成 pdf 后利用 itext 加水印 
	PdfReader reader = new PdfReader(new FileInputStream(outputFile));
	PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(destFile));
	int pageNo = reader.getNumberOfPages();
	// text watermark
	Font f = new Font(FontFamily.HELVETICA, 30);
	Phrase p = new Phrase("Xiaoi Robot Image", f);
	// image watermark
	Image img = Image.getInstance(IMG);
	float w = img.getScaledWidth();
	float h = img.getScaledHeight();
	// transparency
	PdfGState gs1 = new PdfGState();
	gs1.setFillOpacity(0.5f);
	// properties
	PdfContentByte over;
	Rectangle pagesize;
	float x, y;
	// loop over every page
	for (int i = 1; i <= pageNo; i++) {
		pagesize = reader.getPageSizeWithRotation(i);
		x = (pagesize.getLeft() + pagesize.getRight()) / 2;
		y = (pagesize.getTop() + pagesize.getBottom()) / 2;
		over = stamper.getOverContent(i);
		over.saveState();
		over.setGState(gs1);
		if (i % 2 == 1)
			ColumnText.showTextAligned(over, Element.ALIGN_CENTER, p, x, y, 0);
		else
			over.addImage(img, w, 0, 0, h, x - (w / 2), y - (h / 2));
		over.restoreState();
	}
	stamper.close();
	reader.close();
}