When I add a table to the footer of the page, the footer resizes to the right size, however, the table does not stay within this footer, however it locates itself at the top of the page.
I have created a test scenario to illustrate what I mean.
public class TestClass {
public static void main(String[] args) {
try {
Document document = new Document(PageSize.A4);
PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("fail.pdf"));
PdfPTable table = new PdfPTable(2);
table.setWidthPercentage(100);
table.addCell(new PdfPCell(new Paragraph("CONTENT")));
table.addCell(new PdfPCell(new Paragraph("CONTENT")));
Paragraph footerParagraph = new Paragraph();
footerParagraph.add(table);
HeaderFooter footer = new HeaderFooter(footerParagraph, false);
footer.setAlignment(Element.ALIGN_CENTER);
document.setFooter(footer);
document.open();
document.add(new Paragraph("Hello World"));
document.close();
} catch (Exception ex) {
System.out.println(ex);
}
}
}
In this example the the footer has the correct size for the table:
However as mentioned the table is not located at the bottom, but at the top:
You need to know the page size and calculate from there.
You can use
showTextAligned(ELEMENT.ALIGN_BOTTOM)
This was a bug with OpenPDF, which should have been fixed now.
https://github.com/LibrePDF/OpenPDF/issues/373
I am adding a rectangle on top of my page for all pages but I do not want the rectangle on the last page. Here is my code:
#Override
public void onStartPage(PdfWriter writer, Document output) {
Font bold = new Font(Font.FontFamily.HELVETICA, 16, Font.BOLD);
bold.setStyle(Font.UNDERLINE);
bold.setColor(new BaseColor(171, 75, 15));
PdfContentByte cb = writer.getDirectContent();
// Bottom left coordinates x & y, followed by width, height and radius of corners.
cb.roundRectangle(100f, 1180f, 400f, 100f, 5f);//I dont want this on the ;ast page
cb.stroke();
try {
output.add(new Paragraph("STATEMENT OF ACCOUNT", bold));
output.add(new Paragraph(new Phrase(new Chunk(" "))));
output.add(new Paragraph(new Phrase(new Chunk(" "))));
output.add(new Paragraph(new Phrase(new Chunk(" "))));
output.add(new Paragraph(new Phrase(new Chunk(" "))));
Image logo = Image.getInstance(imagepath);
logo.setAbsolutePosition(780, 1230);
logo.scaleAbsolute(200, 180);
writer.getDirectContent().addImage(logo);
} catch (Exception ex) {
System.out.println(ex.getMessage());
}
}
Is there a way to either skip or remove this rectangle from the last Page of the document?
First of all iText developers often have stressed that in onStartPage one MUST NOT add content to the PDF. The reason is that under certain circumstances unused pages are created and onStartPage is called for them but they then are dropped. If you add content to them in onStartPage, though, they are not dropped but remain in your document.
Thus, always use onEndPage to add any content to a page.
In your use case there is yet another reason for using onEndPage: Usually it only becomes clear that a given page is the last page when the last bit of content has been added to the document. This usually occurs after onStartPage has been called for the page but before onEndPage has.
Thus, after you've added the last bit of regular page content to the document, you can simply set a flag in the page event listener that the current page is the final document page. Now the following onEndPage call knows it processes the final page and can add content differently.
So the page event listener would look like this
class MyPageEventListener extends PdfPageEventHelper {
public boolean lastPage = false;
#Override
public void onEndPage(PdfWriter writer, Document output) {
if (!lastPage) {
[add extra content for page before the last one]
} else {
[add extra content for last page]
}
}
...
}
and be used like this
Document document = new Document();
PdfWriter writer = PdfWriter.getInstance(document, TARGET);
MyPageEventListener pageEventListener = new MyPageEventListener();
writer.setPageEvent(pageEventListener);
document.open();
[add all regular content to the document]
pageEventListener.lastPage = true;
document.close();
I want to place a header on each page of my PDF.
The text part of the header is done but I can't find a way to place an image.
public static class Header extends PdfPageEventHelper {
public void onEndPage(PdfWriter writer, Document document) {
try{
PdfContentByte cb = writer.getDirectContent();
/*
Some code to place my text in the header
*/
Image imgSoc = Image.getInstance("C:\\...\\Logo.jpg");
imgSoc.scaleToFit(110,110);
imgSoc.setAbsolutePosition(390, 720);
ColumnText ct = new ColumnText(cb);
ct.addText(new Chunk(imgSoc,0,0));
ct.go();
}catch(Exception e){
e.printStackTrace();
}
}
}
I'm not really sure I'm doing this the right way.
There already are two answers using tables.
Tables can be very helpful to create a dynamic layout of different header parts (document title, document version, page number, logo, ...).
But if you don't need that, already have everything in place like the OP has, you can simply add the image at a fixed position with a fixed size:
public static class Header extends PdfPageEventHelper {
public void onEndPage(PdfWriter writer, Document document) {
try
{
PdfContentByte cb = writer.getDirectContent();
/*
Some code to place some text in the header
*/
Image imgSoc = Image.getInstance("C:\\...\\Logo.jpg");
imgSoc.scaleToFit(110,110);
imgSoc.setAbsolutePosition(390, 720);
cb.addImage(imgSoc);
}
catch(Exception e)
{
e.printStackTrace();
}
}
}
PS: If you really use the same logo on all pages, you had better read the image file into an Image instance only once (e.g. in the constructor or onOpenDocument), hold that instance in a variable and re-use it again and again. This way you include the image data only once in the PDF.
A way to achieve this is to create the header as a table:
PdfPTable table = new PdfPTable(1);
Image imgSoc = Image.getInstance("C:\\...\\Logo.jpg");
imgSoc.scaleToFit(110,110);
PdfPCell cell = new PdfPCell(imgSoc , true);
cell.setBorder(0);
table.addCell(cell);
float[] columnWidths = new float[] { 100};
table.setWidthPercentage(100f);
table.setWidths(columnWidths);
ColumnText ct = new ColumnText(cb);
ct.addElement(table);
ct.setSimpleColumn(36, 0, 559, 806); //Position goes here
ct.go();
You could use iText Table in such a way that , you can show your logo either left or right depending upon the user choice.
Chunk header = new Chunk("your header text", headerFont);
Image logo = Image.getInstance("../../..");
// your image path
logo.scaleAbsolute(80f, 80f);
logo.scalePercent(100);
table = new PdfPTable(3);
table.setWidthPercentage(100);
PdfPCell detailCell = new PdfPCell(new Phrase(header));
detailCell.setBorder(Rectangle.NO_BORDER);
detailCell.setHorizontalAlignment(alignment);
detailCell.setVerticalAlignment(Element.ALIGN_TOP);
PdfPCell logoRightCell = new PdfPCell();
logoRightCell.setFixedHeight(80);
logoRightCell.setBorder(Rectangle.NO_BORDER);
logoRightCell.setHorizontalAlignment(Element.ALIGN_RIGHT);
PdfPCell logoLeftCell = new PdfPCell();
logoLeftCell.setFixedHeight(80);
logoLeftCell.setBorder(Rectangle.NO_BORDER);
logoLeftCell.setHorizontalAlignment(Element.ALIGN_LEFT);
if (true) {
String logoAlign = "left";
if (logoAlign.compareTo("Left") == 0) {
logo.setAlignment(Element.ALIGN_LEFT);
logoLeftCell.addElement(logo);
} else {
logo.setAlignment(Element.ALIGN_RIGHT);
logoRightCell.addElement(logo);
}
}
String headerAlign = "Center";
if (headerAlign.compareTo("Center") == 0) {
table.setWidths(new int[] { 2, 7, 2 });
table.addCell(logoLeftCell);
table.addCell(detailCell);
table.addCell(logoRightCell);
} else if (headerAlign.compareTo("Left") == 0) {
table.setWidths(new int[] { 7, 2, 2 });
table.addCell(detailCell);
table.addCell(logoLeftCell);
table.addCell(logoRightCell);
} else {
table.setWidths(new int[] { 2, 2, 7 });
table.addCell(logoLeftCell);
table.addCell(logoRightCell);
table.addCell(detailCell);
}
//
table.setTotalWidth(document.getPageSize().getWidth()
- document.leftMargin() - document.rightMargin());
table.writeSelectedRows(0, -1, document.leftMargin(), document
.getPageSize().getHeight() - document.topMargin() + 20,
writer.getDirectContent());
}
document.add(table);
this is my first time with iText and I have some doubt about the absolute position of a table.
com.itextpdf.text.Document document = new com.itextpdf.text.Document(com.itextpdf.text.PageSize.A4, 0, 0, 0, 0);
try {
PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(result));
document.open();
PdfPTable table = new PdfPTable(1);
table.setTotalWidth(100);
PdfContentByte canvas = writer.getDirectContent();
PdfPCell cell1 = new PdfPCell(new Paragraph("TEST TEST TEST TEST"));
table.completeRow();
table.writeSelectedRows(0, -1, 3, 53, canvas);
document.close();
}catch (DocumentException ex){
ex.printStackTrace();
}catch (IOException ex){
ex.printStackTrace();
}
So I have set the absolute position of my table, by this line:
table.writeSelectedRows(0, -1, 3, 53, canvas);
and the table is "shifted" from the bottom left corner of the document of X=3 and Y=53
My doubt is: in which unit of measure is expressed this value? pixel? or what?
Can I express these values in cm (centimeters)? How?
Please read the documentation, for instance the free ebook The Best Questions on StackOverflow. You will find questions such as How to get the UserUnit property from a PdfFile using iTextSharp PdfReader with callouts such as this one:
This explains what the measurement unit is in PDF (and iText).
As for your question how to use cm, you can consult the API documentation where you'll find methods such as millimetersToPoints.
I want to do the following with iText:
(1) parse an existing PDF file
(2) add some data to it, on the existing single page of the document (such as a timestamp)
(3) write out the document
I just can't seem to figure out how to do this with iText. In pseudo code I would do this:
Document document = reader.read(input);
document.add(new Paragraph("my timestamp"));
writer.write(document, output);
But for some reason iText's API is so dauntingly complicated that I can't wrap my head around it. The PdfReader actually holds the document model or something (rather than spitting out a document), and you need a PdfWriter to read pages from it... eh?
iText has more than one way of doing this. The PdfStamper class is one option. But I find the easiest method is to create a new PDF document then import individual pages from the existing document into the new PDF.
// Create output PDF
Document document = new Document(PageSize.A4);
PdfWriter writer = PdfWriter.getInstance(document, outputStream);
document.open();
PdfContentByte cb = writer.getDirectContent();
// Load existing PDF
PdfReader reader = new PdfReader(templateInputStream);
PdfImportedPage page = writer.getImportedPage(reader, 1);
// Copy first page of existing PDF into output PDF
document.newPage();
cb.addTemplate(page, 0, 0);
// Add your new data / text here
// for example...
document.add(new Paragraph("my timestamp"));
document.close();
This will read in a PDF from templateInputStream and write it out to outputStream. These might be file streams or memory streams or whatever suits your application.
Gutch's code is close, but it'll only work right if:
There are no annotations (links, fields, etc), no Document Structure/Marked Content, no bookmarks, no document-level script, etc, etc, etc...
The page size happens to be A.4 (decent odds, but it won't work on any ol' PDF you happen to come across)
You don't mind losing all the original document metadata (producer, creation date, possibly author/title/keywords), and maybe the document ID. You can't copy the creation date and doc ID unless you do some pretty deep hackery on iText itself).
The Approved Method is to do it the other way around. Open the existing document with a PdfStamper, and use the returned PdfContentByte from getOverContent() to write text (and whatever else you might need) directly to the page. No second document needed.
And you can use a ColumnText to handle layout and such for you... no need to get down and dirty with beginText(),setFontAndSize(),drawText(),drawText()...,endText().
This is the most complicated scenario I can imagine: I have a PDF file created with Ilustrator and modified with Acrobat to have AcroFields (AcroForm) that I'm going to fill with data with this Java code, the result of that PDF file with the data in the fields is modified adding a Document.
Actually in this case I'm dynamically generating a background that is added to a PDF that is also dynamically generated with a Document with an unknown amount of data or pages.
I'm using JBoss and this code is inside a JSP file (should work in any JSP webserver).
Note: if you are using IExplorer you must submit a HTTP form with POST method to be able to download the file. If not you are going to see the PDF code in the screen. This does not happen in Chrome or Firefox.
<%# page import="java.io.*, com.lowagie.text.*, com.lowagie.text.pdf.*" %><%
response.setContentType("application/download");
response.setHeader("Content-disposition","attachment;filename=listaPrecios.pdf" );
// -------- FIRST THE PDF WITH THE INFO ----------
String str = "";
// lots of words
for(int i = 0; i < 800; i++) str += "Hello" + i + " ";
// the document
Document doc = new Document( PageSize.A4, 25, 25, 200, 70 );
ByteArrayOutputStream streamDoc = new ByteArrayOutputStream();
PdfWriter.getInstance( doc, streamDoc );
// lets start filling with info
doc.open();
doc.add(new Paragraph(str));
doc.close();
// the beauty of this is the PDF will have all the pages it needs
PdfReader frente = new PdfReader(streamDoc.toByteArray());
PdfStamper stamperDoc = new PdfStamper( frente, response.getOutputStream());
// -------- THE BACKGROUND PDF FILE -------
// in JBoss the file has to be in webinf/classes to be readed this way
PdfReader fondo = new PdfReader("listaPrecios.pdf");
ByteArrayOutputStream streamFondo = new ByteArrayOutputStream();
PdfStamper stamperFondo = new PdfStamper( fondo, streamFondo);
// the acroform
AcroFields form = stamperFondo.getAcroFields();
// the fields
form.setField("nombre","Avicultura");
form.setField("descripcion","Esto describe para que sirve la lista ");
stamperFondo.setFormFlattening(true);
stamperFondo.close();
// our background is ready
PdfReader fondoEstampado = new PdfReader( streamFondo.toByteArray() );
// ---- ADDING THE BACKGROUND TO EACH DATA PAGE ---------
PdfImportedPage pagina = stamperDoc.getImportedPage(fondoEstampado,1);
int n = frente.getNumberOfPages();
PdfContentByte background;
for (int i = 1; i <= n; i++) {
background = stamperDoc.getUnderContent(i);
background.addTemplate(pagina, 0, 0);
}
// after this everithing will be written in response.getOutputStream()
stamperDoc.close();
%>
There is another solution much simpler, and solves your problem. It depends the amount of text you want to add.
// read the file
PdfReader fondo = new PdfReader("listaPrecios.pdf");
PdfStamper stamper = new PdfStamper( fondo, response.getOutputStream());
PdfContentByte content = stamper.getOverContent(1);
// add text
ColumnText ct = new ColumnText( content );
// this are the coordinates where you want to add text
// if the text does not fit inside it will be cropped
ct.setSimpleColumn(50,500,500,50);
ct.setText(new Phrase(str, titulo1));
ct.go();
Document document = new Document();
PdfWriter writer = PdfWriter.getInstance(document,
new FileOutputStream("E:/TextFieldForm.pdf"));
document.open();
PdfPTable table = new PdfPTable(2);
table.getDefaultCell().setPadding(5f); // Code 1
table.setHorizontalAlignment(Element.ALIGN_LEFT);
PdfPCell cell;
// Code 2, add name TextField
table.addCell("Name");
TextField nameField = new TextField(writer,
new Rectangle(0,0,200,10), "nameField");
nameField.setBackgroundColor(Color.WHITE);
nameField.setBorderColor(Color.BLACK);
nameField.setBorderWidth(1);
nameField.setBorderStyle(PdfBorderDictionary.STYLE_SOLID);
nameField.setText("");
nameField.setAlignment(Element.ALIGN_LEFT);
nameField.setOptions(TextField.REQUIRED);
cell = new PdfPCell();
cell.setMinimumHeight(10);
cell.setCellEvent(new FieldCell(nameField.getTextField(),
200, writer));
table.addCell(cell);
// force upper case javascript
writer.addJavaScript(
"var nameField = this.getField('nameField');" +
"nameField.setAction('Keystroke'," +
"'forceUpperCase()');" +
"" +
"function forceUpperCase(){" +
"if(!event.willCommit)event.change = " +
"event.change.toUpperCase();" +
"}");
// Code 3, add empty row
table.addCell("");
table.addCell("");
// Code 4, add age TextField
table.addCell("Age");
TextField ageComb = new TextField(writer, new Rectangle(0,
0, 30, 10), "ageField");
ageComb.setBorderColor(Color.BLACK);
ageComb.setBorderWidth(1);
ageComb.setBorderStyle(PdfBorderDictionary.STYLE_SOLID);
ageComb.setText("12");
ageComb.setAlignment(Element.ALIGN_RIGHT);
ageComb.setMaxCharacterLength(2);
ageComb.setOptions(TextField.COMB |
TextField.DO_NOT_SCROLL);
cell = new PdfPCell();
cell.setMinimumHeight(10);
cell.setCellEvent(new FieldCell(ageComb.getTextField(),
30, writer));
table.addCell(cell);
// validate age javascript
writer.addJavaScript(
"var ageField = this.getField('ageField');" +
"ageField.setAction('Validate','checkAge()');" +
"function checkAge(){" +
"if(event.value < 12){" +
"app.alert('Warning! Applicant\\'s age can not" +
" be younger than 12.');" +
"event.value = 12;" +
"}}");
// add empty row
table.addCell("");
table.addCell("");
// Code 5, add age TextField
table.addCell("Comment");
TextField comment = new TextField(writer,
new Rectangle(0, 0,200, 100), "commentField");
comment.setBorderColor(Color.BLACK);
comment.setBorderWidth(1);
comment.setBorderStyle(PdfBorderDictionary.STYLE_SOLID);
comment.setText("");
comment.setOptions(TextField.MULTILINE |
TextField.DO_NOT_SCROLL);
cell = new PdfPCell();
cell.setMinimumHeight(100);
cell.setCellEvent(new FieldCell(comment.getTextField(),
200, writer));
table.addCell(cell);
// check comment characters length javascript
writer.addJavaScript(
"var commentField = " +
"this.getField('commentField');" +
"commentField" +
".setAction('Keystroke','checkLength()');" +
"function checkLength(){" +
"if(!event.willCommit && " +
"event.value.length > 100){" +
"app.alert('Warning! Comment can not " +
"be more than 100 characters.');" +
"event.change = '';" +
"}}");
// add empty row
table.addCell("");
table.addCell("");
// Code 6, add submit button
PushbuttonField submitBtn = new PushbuttonField(writer,
new Rectangle(0, 0, 35, 15),"submitPOST");
submitBtn.setBackgroundColor(Color.GRAY);
submitBtn.
setBorderStyle(PdfBorderDictionary.STYLE_BEVELED);
submitBtn.setText("POST");
submitBtn.setOptions(PushbuttonField.
VISIBLE_BUT_DOES_NOT_PRINT);
PdfFormField submitField = submitBtn.getField();
submitField.setAction(PdfAction
.createSubmitForm("",null, PdfAction.SUBMIT_HTML_FORMAT));
cell = new PdfPCell();
cell.setMinimumHeight(15);
cell.setCellEvent(new FieldCell(submitField, 35, writer));
table.addCell(cell);
// Code 7, add reset button
PushbuttonField resetBtn = new PushbuttonField(writer,
new Rectangle(0, 0, 35, 15), "reset");
resetBtn.setBackgroundColor(Color.GRAY);
resetBtn.setBorderStyle(
PdfBorderDictionary.STYLE_BEVELED);
resetBtn.setText("RESET");
resetBtn
.setOptions(
PushbuttonField.VISIBLE_BUT_DOES_NOT_PRINT);
PdfFormField resetField = resetBtn.getField();
resetField.setAction(PdfAction.createResetForm(null, 0));
cell = new PdfPCell();
cell.setMinimumHeight(15);
cell.setCellEvent(new FieldCell(resetField, 35, writer));
table.addCell(cell);
document.add(table);
document.close();
}
class FieldCell implements PdfPCellEvent{
PdfFormField formField;
PdfWriter writer;
int width;
public FieldCell(PdfFormField formField, int width,
PdfWriter writer){
this.formField = formField;
this.width = width;
this.writer = writer;
}
public void cellLayout(PdfPCell cell, Rectangle rect,
PdfContentByte[] canvas){
try{
// delete cell border
PdfContentByte cb = canvas[PdfPTable
.LINECANVAS];
cb.reset();
formField.setWidget(
new Rectangle(rect.left(),
rect.bottom(),
rect.left()+width,
rect.top()),
PdfAnnotation
.HIGHLIGHT_NONE);
writer.addAnnotation(formField);
}catch(Exception e){
System.out.println(e);
}
}
}
how-to-update-a-pdf-without-creating-a-new-pdf
iText 7, please pay attention to version
PdfReader reader = new PdfReader(src);
PdfWriter writer = new PdfWriter(dest);
PdfDocument pdfDoc = new PdfDocument(reader, writer);
//manipulate pdf…
pdfDoc.close();