Java Code Examples for com.lowagie.text.pdf.PdfContentByte#setColorFill()

/**
 * @see com.lowagie.text.pdf.PdfPageEventHelper#onStartPage(com.lowagie.text.pdf.PdfWriter, com.lowagie.text.Document)
 */
public void onStartPage(PdfWriter writer, Document document) {
    if (writer.getPageNumber() < 3) {
        PdfContentByte cb = writer.getDirectContentUnder();
        cb.saveState();
        cb.setColorFill(Color.pink);
        cb.beginText();
        cb.setFontAndSize(helv, 48);
        cb.showTextAligned(Element.ALIGN_CENTER, "My Watermark Under " + writer.getPageNumber(), document.getPageSize().getWidth() / 2, document.getPageSize().getHeight() / 2, 45);
        cb.endText();
        cb.restoreState();
    }
}
 

/**
 * Prints a square and fills half of it with a gray rectangle.
 * @param x
 * @param y
 * @param cb
 * @throws Exception
 */
public static void pictureBackdrop(float x, float y, PdfContentByte cb) throws Exception {
    cb.setColorStroke(Color.black);
    cb.setColorFill(Color.red);
    cb.rectangle(x, y, 100, 200);
    cb.fill();
    cb.setLineWidth(2);
    cb.rectangle(x, y, 200, 200);
    cb.stroke();
}
 

/**
 * Prints 3 circles in different colors that intersect with eachother.
 * @param x
 * @param y
 * @param cb
 * @throws Exception
 */
public static void pictureCircles(float x, float y, PdfContentByte cb) throws Exception {
	PdfGState gs = new PdfGState();
	gs.setBlendMode(PdfGState.BM_SOFTLIGHT);
	gs.setFillOpacity(0.7f);
	cb.setGState(gs);
    cb.setColorFill(Color.gray);
    cb.circle(x + 70, y + 70, 50);
    cb.fill();
    cb.circle(x + 100, y + 130, 50);
    cb.fill();
    cb.circle(x + 130, y + 70, 50);
    cb.fill();
}
 

/**
 * Prints a square and fills half of it with a gray rectangle.
 * 
 * @param x
 * @param y
 * @param cb
 * @throws Exception
 */
private static void pictureBackdrop(float x, float y, PdfContentByte cb)
		throws Exception {
	cb.setColorStroke(Color.black);
	cb.setColorFill(Color.gray);
	cb.rectangle(x, y, 100, 200);
	cb.fill();
	cb.setLineWidth(2);
	cb.rectangle(x, y, 200, 200);
	cb.stroke();
}
 

/**
 * Prints 3 circles in different colors that intersect with eachother.
 * 
 * @param x
 * @param y
 * @param cb
 * @throws Exception
 */
private static void pictureCircles(float x, float y, PdfContentByte cb)
		throws Exception {
	cb.setColorFill(Color.red);
	cb.circle(x + 70, y + 70, 50);
	cb.fill();
	cb.setColorFill(Color.yellow);
	cb.circle(x + 100, y + 130, 50);
	cb.fill();
	cb.setColorFill(Color.blue);
	cb.circle(x + 130, y + 70, 50);
	cb.fill();
}
 

public static void addWatermark(PdfStamper pdfStamper, BaseFont baseFont, Color fontColor, String waterMarkString) throws Exception {
	if (null == pdfStamper || null == baseFont) {
		throw new java.lang.Exception("PdfStamper or BaseFont is null.");
	}
	if (StringUtils.isBlank(waterMarkString)) {
		return;
	}
	PdfContentByte pdfContentByte = null;
	Rectangle pageRect = null;
	PdfGState pdfGState = new PdfGState();
	// 设置透明度为0.4
	pdfGState.setFillOpacity(0.4f);
	pdfGState.setStrokeOpacity(0.4f);
       int pageNum = pdfStamper.getReader().getNumberOfPages();
       try {
           for (int i = 1; i <= pageNum; i++) {
           	pageRect = pdfStamper.getReader().getPageSizeWithRotation(i);
           	// 计算水印X,Y坐标
           	float x = pageRect.getWidth() / 2;
           	float y = pageRect.getHeight() / 2;
           	//获得PDF最顶层
           	pdfContentByte = pdfStamper.getOverContent(i);
           	pdfContentByte.saveState();
           	// set Transparency
           	pdfContentByte.setGState(pdfGState);
           	pdfContentByte.beginText();
           	pdfContentByte.setColorFill(fontColor);
           	pdfContentByte.setFontAndSize(baseFont, 60);
           	// 水印文字成45度角倾斜
           	pdfContentByte.showTextAligned(Element.ALIGN_CENTER, waterMarkString, x, y, 45);
           	pdfContentByte.endText();             	
           }
       } catch (Exception e) {
       	e.printStackTrace();
       } finally {
       	pdfContentByte = null;
           pageRect = null;        	
       }
}
 

protected void upperLeftAlignmentMark(final PdfContentByte cb) {
    cb.saveState();
    cb.rectangle(ALIGNMENT_MARGIN,
                 (LETTER.height() + TOP_MARGIN) - ALIGNMENT_MARK_HEIGHT - ALIGNMENT_MARGIN,
                 ALIGNMENT_MARK_WIDTH,
                 ALIGNMENT_MARK_HEIGHT);
    cb.setColorFill(BLACK);
    cb.fill();
    cb.restoreState();
}
 

protected void lowerLeftAlignmentMark(final PdfContentByte cb) {
    cb.saveState();
    cb.rectangle(ALIGNMENT_MARGIN,
                 ALIGNMENT_MARGIN,
                 ALIGNMENT_MARK_WIDTH,
                 ALIGNMENT_MARK_HEIGHT);
    cb.setColorFill(BLACK);
    cb.fill();
    cb.restoreState();
}
 

protected void lowerRightAlignmentMark(final PdfContentByte cb) {
    cb.saveState();
    cb.rectangle(LETTER.width() - (ALIGNMENT_MARGIN * 4) - ALIGNMENT_MARK_WIDTH,
                 ALIGNMENT_MARGIN,
                 ALIGNMENT_MARK_WIDTH,
                 ALIGNMENT_MARK_HEIGHT);
    cb.setColorFill(BLACK);
    cb.fill();
    cb.restoreState();
}
 

protected void upperRightAlignmentMark(final PdfContentByte cb) {
    cb.saveState();
    cb.rectangle(LETTER.width() - (ALIGNMENT_MARGIN * 4) - ALIGNMENT_MARK_WIDTH,
                 (LETTER.height() + TOP_MARGIN) - ALIGNMENT_MARGIN - ALIGNMENT_MARK_HEIGHT,
                 ALIGNMENT_MARK_WIDTH,
                 ALIGNMENT_MARK_HEIGHT);
    cb.setColorFill(BLACK);
    cb.fill();
    cb.restoreState();
}
 

/**
 * Changing the Graphics State with saveState() and restoreState().
 * 
 */
@Test
public void main() throws Exception {

	// step 1: creation of a document-object
	Document document = new Document();

	try {

		// step 2:
		// we create a writer that listens to the document
		// and directs a PDF-stream to a file
		PdfWriter writer = PdfWriter.getInstance(document,
				PdfTestBase.getOutputStream( "state.pdf"));

		// step 3: we open the document
		document.open();

		// step 4: we grab the ContentByte and do some stuff with it
		PdfContentByte cb = writer.getDirectContent();

		cb.circle(260.0f, 500.0f, 250.0f);
		cb.fill();
		cb.saveState();
		cb.setColorFill(Color.red);
		cb.circle(260.0f, 500.0f, 200.0f);
		cb.fill();
		cb.saveState();
		cb.setColorFill(Color.blue);
		cb.circle(260.0f, 500.0f, 150.0f);
		cb.fill();
		cb.restoreState();
		cb.circle(260.0f, 500.0f, 100.0f);
		cb.fill();
		cb.restoreState();
		cb.circle(260.0f, 500.0f, 50.0f);
		cb.fill();
		
		cb.sanityCheck();
	} catch (DocumentException de) {
		System.err.println(de.getMessage());
	} catch (IOException ioe) {
		System.err.println(ioe.getMessage());
	}

	// step 5: we close the document
	document.close();
}
 

/**
 * Changing the Graphics State with PdfGState.
 * 
 */
@Test
public void main() throws Exception {

	// step 1: creation of a document-object
	Document document = new Document();

	try {

		// step 2:
		// we create a writer that listens to the document
		// and directs a PDF-stream to a file
		PdfWriter writer = PdfWriter.getInstance(document,
				PdfTestBase.getOutputStream( "gstate.pdf"));

		// step 3: we open the document
		document.open();

		// step 4: we grab the ContentByte and do some stuff with it
		PdfContentByte cb = writer.getDirectContent();

           PdfGState gs = new PdfGState();
           gs.setFillOpacity(0.5f);
           cb.setGState(gs);
		cb.setColorFill(Color.red);
		cb.circle(260.0f, 500.0f, 250.0f);
		cb.fill();
		cb.circle(260.0f, 500.0f, 200.0f);
		cb.fill();
		cb.circle(260.0f, 500.0f, 150.0f);
		cb.fill();
		gs.setFillOpacity(0.2f);
		cb.setGState(gs);
		cb.setColorFill(Color.blue);
		cb.circle(260.0f, 500.0f, 100.0f);
		cb.fill();
		cb.circle(260.0f, 500.0f, 50.0f);
		cb.fill();
		
		cb.sanityCheck();
	} catch (DocumentException de) {
		System.err.println(de.getMessage());
	} catch (IOException ioe) {
		System.err.println(ioe.getMessage());
	}

	// step 5: we close the document
	document.close();
}
 

/**
 * @see com.lowagie.text.pdf.PdfPageEventHelper#onEndPage(com.lowagie.text.pdf.PdfWriter, com.lowagie.text.Document)
 */
public void onEndPage(PdfWriter writer, Document document) {
    PdfContentByte cb = writer.getDirectContent();
    cb.saveState();
    // write the headertable
    table.setTotalWidth(document.right() - document.left());
    table.writeSelectedRows(0, -1, document.left(), document.getPageSize().getHeight() - 50, cb);
    // compose the footer
    String text = "Page " + writer.getPageNumber() + " of ";
    float textSize = helv.getWidthPoint(text, 12);
    float textBase = document.bottom() - 20;
    cb.beginText();
    cb.setFontAndSize(helv, 12);
    // for odd pagenumbers, show the footer at the left
    if ((writer.getPageNumber() & 1) == 1) {
        cb.setTextMatrix(document.left(), textBase);
        cb.showText(text);
        cb.endText();
        cb.addTemplate(tpl, document.left() + textSize, textBase);
    }
    // for even numbers, show the footer at the right
    else {
        float adjust = helv.getWidthPoint("0", 12);
        cb.setTextMatrix(document.right() - textSize - adjust, textBase);
        cb.showText(text);
        cb.endText();
        cb.addTemplate(tpl, document.right() - adjust, textBase);
    }

    // draw a Rectangle around the page
    cb.setColorStroke(Color.orange);
    cb.setLineWidth(2);
    cb.rectangle(20, 20, document.getPageSize().getWidth() - 40, document.getPageSize().getHeight() - 40);
    cb.stroke();

    // starting on page 3, a watermark with an Image that is made transparent
    if (writer.getPageNumber() >= 3) {

        cb.setGState(gstate);
        cb.setColorFill(Color.red);
        cb.beginText();
        cb.setFontAndSize(helv, 48);
        cb.showTextAligned(Element.ALIGN_CENTER, "Watermark Opacity " + writer.getPageNumber(), document.getPageSize().getWidth() / 2, document.getPageSize().getHeight() / 2, 45);
        cb.endText();
        try {
            cb.addImage(headerImage, headerImage.getWidth(), 0, 0, headerImage.getHeight(), 440, 80);
        }
        catch(Exception e) {
            throw new ExceptionConverter(e);
        }
    }
    cb.restoreState();
    cb.sanityCheck();
}
 

/**
    * Demonstrates the use of spotcolors.
    */
@Test
   public void main() throws Exception {
       
       
       // step 1: creation of a document-object
       Document document = new Document();
           
           // step 2:
           // we create a writer that listens to the document
           // and directs a PDF-stream to a file
           PdfWriter writer = PdfWriter.getInstance(document, PdfTestBase.getOutputStream("spotcolor.pdf"));
           BaseFont bf = BaseFont.createFont("Helvetica", "winansi", BaseFont.NOT_EMBEDDED);
           
           // step 3: we open the document
           document.open();
           
           // step 4: we grab the ContentByte and do some stuff with it
           PdfContentByte cb = writer.getDirectContent();
           
           // step 5: we instantiate PdfSpotColor
           
           // Note: I made up these names unless someone give me a PANTONE swatch as gift ([email protected])
           PdfSpotColor spc_cmyk = new PdfSpotColor("PANTONE 280 CV", new CMYKColor(0.9f, .2f, .3f, .1f));
           PdfSpotColor spc_rgb = new PdfSpotColor("PANTONE 147", new Color(114, 94, 38));
           PdfSpotColor spc_g = new PdfSpotColor("PANTONE 100 CV", new GrayColor(0.9f));
           
           // Stroke a rectangle with CMYK alternate
           cb.setColorStroke(spc_cmyk, .5f);
           cb.setLineWidth(10f);
           // draw a rectangle
           cb.rectangle(100, 700, 100, 100);
           // add the diagonal
           cb.moveTo(100, 700);
           cb.lineTo(200, 800);
           // stroke the lines
           cb.stroke();
           
           // Fill a rectangle with CMYK alternate
           cb.setColorFill(spc_cmyk, 0.25f);
           cb.rectangle(250, 700, 100, 100);
           cb.fill();
           
           // Stroke a circle with RGB alternate
           cb.setColorStroke(spc_rgb, 0.9f);
           cb.setLineWidth(5f);
           cb.circle(150f, 500f, 100f);
           cb.stroke();
           
           // Fill the circle with RGB alternate
           cb.setColorFill(spc_rgb, 0.9f);
           cb.circle(150f, 500f, 50f);
           cb.fill();
           
           // example with colorfill
           cb.setColorFill(spc_g, 0.5f);
           cb.moveTo(100f, 200f);
           cb.lineTo(200f, 250f);
           cb.lineTo(400f, 150f);
           cb.fill();
           // cb.sanityCheck is called during newPage().
           document.newPage();
           String text = "Some text to show";
           document.add(new Paragraph(text, new Font(Font.HELVETICA, 24, Font.NORMAL, new SpotColor(spc_cmyk, 0.25f))));
           document.add(new Paragraph(text, new Font(Font.HELVETICA, 24, Font.NORMAL, new SpotColor(spc_cmyk, 0.5f))));
           
           // example with template
           PdfTemplate t = cb.createTemplate(500f, 500f);
           // Stroke a rectangle with CMYK alternate
           t.setColorStroke(new SpotColor(spc_cmyk, .5f));
           t.setLineWidth(10f);
           // draw a rectangle
           t.rectangle(100, 10, 100, 100);
           // add the diagonal
           t.moveTo(100, 10);
           t.lineTo(200, 100);
           // stroke the lines
           t.stroke();
           
           // Fill a rectangle with CMYK alternate
           t.setColorFill(spc_g, 0.5f);
           t.rectangle(100, 125, 100, 100);
           t.fill();
           t.beginText();
           t.setFontAndSize(bf, 20f);
           t.setTextMatrix(1f, 0f, 0f, 1f, 10f, 10f);
           t.showText("Template text upside down");
           t.endText();
           t.rectangle(0, 0, 499, 499);
           t.stroke();
           t.sanityCheck();
           cb.addTemplate(t, -1.0f, 0.00f, 0.00f, -1.0f, 550f, 550f);
           
           cb.sanityCheck();

       
       // step 5: we close the document
       document.close();
   }
 

/**
 * Creates a document with some PdfAnnotations.
 * 
 */
@Test
public void main() throws Exception {

	// step 1: creation of a document-object
	Document document = new Document();

	// step 2:
	PdfWriter writer = PdfWriter.getInstance(document, PdfTestBase.getOutputStream("Annotations.pdf"));
	// step 3:
	writer.setPdfVersion(PdfWriter.VERSION_1_5);
	document.open();
	// step 4:
	PdfContentByte cb = writer.getDirectContent();
	// page 1
	PdfFileSpecification fs = PdfFileSpecification.fileExtern(writer, PdfTestBase.RESOURCES_DIR + "cards.mpg");
	writer.addAnnotation(PdfAnnotation.createScreen(writer, new Rectangle(200f, 700f, 300f, 800f), "cards.mpg", fs,
			"video/mpeg", true));
	PdfAnnotation a = new PdfAnnotation(writer, 200f, 550f, 300f, 650f, PdfAction.javaScript(
			"app.alert('Hello');\r", writer));
	document.add(new Chunk("click to trigger javascript").setAnnotation(a).setLocalDestination("top"));
	writer.addAnnotation(a);
	writer.addAnnotation(PdfAnnotation.createFileAttachment(writer, new Rectangle(100f, 650f, 150f, 700f),
			"This is some text", "some text".getBytes(), null, "some.txt"));
	writer.addAnnotation(PdfAnnotation.createText(writer, new Rectangle(200f, 400f, 300f, 500f), "Help",
			"This Help annotation was made with 'createText'", false, "Help"));
	writer.addAnnotation(PdfAnnotation.createText(writer, new Rectangle(200f, 250f, 300f, 350f), "Help",
			"This Comment annotation was made with 'createText'", true, "Comment"));
	cb.rectangle(200, 700, 100, 100);
	cb.rectangle(200, 550, 100, 100);
	cb.rectangle(200, 400, 100, 100);
	cb.rectangle(200, 250, 100, 100);
	cb.stroke();
	document.newPage();
	// page 2
	writer.addAnnotation(PdfAnnotation.createLink(writer, new Rectangle(200f, 700f, 300f, 800f),
			PdfAnnotation.HIGHLIGHT_TOGGLE, PdfAction.javaScript("app.alert('Hello');\r", writer)));
	writer.addAnnotation(PdfAnnotation.createLink(writer, new Rectangle(200f, 550f, 300f, 650f),
			PdfAnnotation.HIGHLIGHT_OUTLINE, "top"));
	writer.addAnnotation(PdfAnnotation.createLink(writer, new Rectangle(200f, 400f, 300f, 500f),
			PdfAnnotation.HIGHLIGHT_PUSH, 1, new PdfDestination(PdfDestination.FIT)));
	writer.addAnnotation(PdfAnnotation.createSquareCircle(writer, new Rectangle(200f, 250f, 300f, 350f),
			"This Comment annotation was made with 'createSquareCircle'", false));
	document.newPage();
	// page 3
	PdfContentByte pcb = new PdfContentByte(writer);
	pcb.setColorFill(new Color(0xFF, 0x00, 0x00));
	writer.addAnnotation(PdfAnnotation.createFreeText(writer, new Rectangle(200f, 700f, 300f, 800f),
			"This is some free text, blah blah blah", pcb));
	writer.addAnnotation(PdfAnnotation.createLine(writer, new Rectangle(200f, 550f, 300f, 650f), "this is a line",
			200, 550, 300, 650));
	writer.addAnnotation(PdfAnnotation.createStamp(writer, new Rectangle(200f, 400f, 300f, 500f),
			"This is a stamp", "Stamp"));
	writer.addAnnotation(PdfAnnotation.createPopup(writer, new Rectangle(200f, 250f, 300f, 350f),
			"Hello, I'm a popup!", true));
	cb.rectangle(200, 700, 100, 100);
	cb.rectangle(200, 550, 100, 100);
	cb.rectangle(200, 250, 100, 100);
	cb.stroke();

	// step 5: we close the document
	document.close();
}