How can I remove the default top margin on a pdf document with itextsharp? - itext

I´m trying to get my pdf document to start at (0,0) however it seems that the document object has a default top margin which I cannot set to 0.
Is there a way to do this?
My code looks like the following
using (MemoryStream memoria = new MemoryStream())
{
Document pdf = new Document(new Rectangle(288, 144));
try
{
PdfWriter writer = PdfWriter.GetInstance(pdf, memoria);
pdf.Open();
pdf.SetMargins(0, 0, 0, 0);
PdfPTable tPrincipal = new PdfPTable(2);
tPrincipal .WidthPercentage = 100;
tPrincipal .DefaultCell.Border = 0;
tPrincipal .TotalWidth = 288f;
tPrincipal .LockedWidth = true;
....
I just can´t get to set the top margin to 0. It just doesnt care about my setting to (0,0,0,0) and leaves a top margin (around 50f).

You'll need to set your margins in your Document constructor, like this:
Document pdf = new Document(new Rectangle(288f, 144f), 0, 0, 0, 0);
You won't need to use the Document.SetMargins() method. I believe you'd use SetMargins()after you create a new page by calling Document.NewPage().

Option 1:
Document doc = new Document();
doc.setMargins(0 , 0 , 0 , 0);
Option 2:
Document pdf = new Document(new Rectangle(595 , 842 ), 0, 0, 0, 0);
Where, 595x842 is A4 size paper.

I did like below where “…/XYZ.pdf” is the path to generated pdf file download path.
PdfDocument pdfDoc = new PdfDocument(new com.itextpdf.kernel.pdf.PdfWriter(“…/XYZ.pdf”));
Document doc = new Document(pdfDoc);
doc.setMargins(0f , 0f , 0f , 0f);

Related

saving modified data in pdf itextsharp

I have created a pdf using itextsharp which contains some editable fields, when the service is called the pdf is created. But the problem what I am facing is, if i am changing anything in the pdf and downloading it then the changes are not saved. Also i want to open the pdf in a new tab through server side.
Code what I am using is:
public static String[] LANGUAGES_gc = { "English", "Math", "Science" };
[HttpGet]
[ODataRoute("GetPdf")]
public void DownloadPDF()
{
HttpContext.Current.Response.ContentType = "application/pdf";
HttpContext.Current.Response.AddHeader("content-disposition", "inline;filename=Example.pdf");
HttpContext.Current.Response.Cache.SetCacheability(HttpCacheability.NoCache);
Document doc = new Document(iTextSharp.text.PageSize.A4, 10f, 10f, 100f, 0f);
string pdfFilePath = HttpContext.Current.Server.MapPath(".") + "/PDFFiles";
PdfWriter wri = PdfWriter.GetInstance(doc, HttpContext.Current.Response.OutputStream);
doc.Open();
doc.AddAuthor("Test author");
doc.AddCreationDate();
PdfContentByte cb = wri.DirectContent;
Font _bf = new Font(Font.FontFamily.HELVETICA, 6);
PdfFormField _radioGroup = PdfFormField.CreateRadioButton(wri, true);
_radioGroup.FieldName = "language_gc";
Rectangle _rect;
RadioCheckField _radioG;
PdfFormField _radioField1;
PdfFormField field;
for (int i = 0; i < LANGUAGES_gc.Length; i++)
{
_rect = new Rectangle(46, 806 - i * 40, 60, 788 - i * 40);
_radioG = new RadioCheckField(wri, _rect, null, LANGUAGES_gc[i]);
_radioG.BackgroundColor = new GrayColor(0.8f);
_radioG.BorderColor = GrayColor.BLACK;
_radioG.CheckType = RadioCheckField.TYPE_CIRCLE;
_radioField1 = _radioG.RadioField;
_radioGroup.AddKid(_radioField1);
ColumnText.ShowTextAligned(cb, Element.ALIGN_LEFT, new Phrase(LANGUAGES_gc[i], new Font(Font.FontFamily.HELVETICA, 18)), 70, 790 - i * 40, 0);
}
/* Button */
_rect = new Rectangle(300, 806, 370, 788);
PushbuttonField button = new PushbuttonField(wri, _rect, "Buttons");
button.BackgroundColor = new GrayColor(0.75f);
button.BorderColor = GrayColor.GRAYBLACK;
button.BorderWidth = 1;
button.BorderStyle = PdfBorderDictionary.STYLE_BEVELED;
button.TextColor = GrayColor.GRAYBLACK ;
button.FontSize = 12;
button.Text = "Submit";
//button.Layout = PushbuttonField.LAYOUT_ICON_LEFT_LABEL_RIGHT;
button.ScaleIcon = PushbuttonField.SCALE_ICON_ALWAYS;
button.ProportionalIcon = true;
button.IconHorizontalAdjustment = 0;
field = button.Field;
field.Action = PdfAction.JavaScript("this.showButtonState()", wri);
wri.AddAnnotation(field);
//}
//return ms.ToArray();
/*----------------------------------------------------*/
wri.AddAnnotation(_radioGroup);
wri.AddAnnotation(button.Field);
cb = wri.DirectContent;
doc.Close();
HttpContext.Current.Response.Write(doc);
HttpContext.Current.Response.End();
}
Can someone suggest me the solution??
Let's make an analogy here, with a simpler file-type. Suppose you're showing the user a textfile. They open it in their native .txt app (notepad) and make some changes.
Do you expect their changes to be communicated automatically back to your server?
Or that their changes are magically propagated? Of course not.
And even if it would, this seems like functionality notepad would have to provide, rather than something the creator of the file should do.
Now, as it so happens, there is a particular standard of pdf documents that exists for precisely your use-case. Essentially, the document sets up a connection to a server, and synchronizes. However, this standard is rather obscure, not a lot of viewers support it.
To the best of my knowledge, no pdf library (including iText) supports making documents like that.

iText Pdf Merging Checkbox Issue

We are using iText Pdf API version 5.5.3 and we are trying to merge pdf documents which sometimes contain checkboxes , we write pdf document in servlet output stream and displays in iframe.
It works well in IE(tried in 11) but checkbox doesn't appear in Chrome(tried in 52).
Below is the sample code we use to display PDF.
InputStream in = docFile.getImage()
.getBinaryStream();
reader = new PdfReader(in);
pdfReaderList.add(reader);
document = new Document(PageSize.A4);
byteArrayOutputStream = new ByteArrayOutputStream();
PdfCopy copy = new PdfCopy(document, byteArrayOutputStream);
document.setMargins(35, 35, 48, 75);
document.open();
copy.setMargins(35, 35, 48, 75);
// add a document
Iterator<PdfReader> pdfReader = pdfReaderList.iterator();
while (pdfReader.hasNext()){
PdfImportedPage page;
reader = MCPDFFileWriter.unlockPdf(pdfReader.next());
for (int currentPage = 1; currentPage <= reader.getNumberOfPages(); currentPage++) {
page = copy.getImportedPage(reader, currentPage);
pageNum++;
copy.addPage(page);
footerNamesList.add(fileName);
footerMap.put(footerMap.size() + 1, fileName);
}
}
document.close ();
reader.close();
copy.close();
I also gone through this Link and given solution seems to be working when I use below code -
InputStream in = docFile.getImage()
.getBinaryStream();
reader = new PdfReader(in);
pdfReaderList.add(reader);
document = new Document(PageSize.A4);
byteArrayOutputStream = new ByteArrayOutputStream();
PdfCopy copy = new PdfCopy(document, byteArrayOutputStream);
document.setMargins(35, 35, 48, 75);
document.open();
copy.setMargins(35, 35, 48, 75);
**copy.setMergeFields();**
// add a document
**copy.addDocument(reader);**
document.close ();
reader.close();
copy.close();
However I sometimes face OutOfMemoryError and looking for some idea if there is any known issue with copy.setMergeFields();copy.addDocument(reader); and how it can be overcome ?
A bug was also reported in chrome ( in the thought of plugin issue) and sample pdf are attached there

iText Text Expansion Not Working in Certain Conditions

The following code will generate a pdf that will not use the specified text expansions when read out loud. It seems that adding the image in a container is causing the problem.
void Main()
{
using(var ms = new MemoryStream())
{
var doc = new Document(PageSize.LETTER, 72, 72, 72, 72);
var writer = PdfWriter.GetInstance(doc, ms);
writer.SetTagged();
doc.Open();
var c1 = new Chunk("ABC");
c1.SetTextExpansion("the alphabet");
var p1 = new Paragraph();
p1.Add(c1);
doc.Add(p1);
// Adding this image to the document as img > chunk > doc causes the text expansion not to work.
// Adding this image to the document as img > doc works
var t = writer.DirectContent.CreateTemplate(6, 6);
t.SetLineWidth(1f);
t.Circle(3f, 3f, 1.5f);
t.SetGrayFill(0);
t.FillStroke();
var i = iTextSharp.text.Image.GetInstance(t);
var c2 = new Chunk(i, 0, 0);
doc.Add(c2);
var c3 = new Chunk("foobar");
c3.SetTextExpansion("foo bar");
var p3 = new Paragraph();
p3.Add(c3);
doc.Add(p3);
doc.Close();
ms.Flush();
File.WriteAllBytes("d:\\expansion.pdf", ms.ToArray());
}
}
Is this just me doing something wrong or a bug?
While this doesn't read out loud correctly in Adobe Reader, it does in JAWS. So it sounds like this is a reader issue and not necessarily an iText issue.

positioning text using itextSharp in C3

I am trying to generate a pdf on button click. I am having challenge to design the page. If anybody can help on, how to position the text in particular position.
Say I want my address to in the top right corner and heading in the center.
Here is the code I am working on:
private void pdf_btn_Click(object sender, EventArgs e)
{
SaveFileDialog svg = new SaveFileDialog();
svg.ShowDialog();
using (FileStream stream = new FileStream(svg.FileName + ".pdf", FileMode.Create))
{
// Create a Document object
var document = new Document(PageSize.A4, 50, 50, 25, 25);
// Create a new PdfWrite object, writing the output to a MemoryStream
// var output = new MemoryStream();
var writer = PdfWriter.GetInstance(document, stream);
document.Open();
// First, create our fonts... (For more on working w/fonts in iTextSharp, see: http://www.mikesdotnetting.com/Article/81/iTextSharp-Working-with-Fonts
var titleFont = FontFactory.GetFont("Arial", 18, Convert.ToInt32(Font.Bold));
var AddressFont = FontFactory.GetFont("Arial", 7, Convert.ToInt32(Font.Bold));
var boldTableFont = FontFactory.GetFont("Arial", 12, Convert.ToInt32(Font.Bold));
var endingMessageFont = FontFactory.GetFont("Arial", 10, Convert.ToInt32(Font.Italic));
var bodyFont = FontFactory.GetFont("Arial", 12);
// Add the "" title
document.Add(new Paragraph("Certificate of Analysis", titleFont));
// Add Address
var text = document.Add(new Paragraph("Abc Company", AddressFont));
document.Add(new Paragraph("Tel:(xx) xxx-xxxx, (xxx) xxx-xxx", AddressFont));
document.Add(new Paragraph("Fax: (xxx) xxx-xxx, , AddressFont));
document.Close();
stream.Close();
}
}
There are different ways to achieve what you want.
Currently, you are telling iText to do the layout. If you want to center the text "Certificate of Analysis", then you could change the alignment of the Paragraph like this:
Paragraph header = new Paragraph("Certificate of Analysis", titleFont);
header.Alignment = Element.ALIGN_CENTER;
document.Add(header);
If you want the text "Abc Company" to be right-aligned, you can change he alignment like this:
Paragraph company = new Paragraph("Abc Company", AddressFont);
company.Alignment = Element.ALIGN_RIGHT;
document.Add(company);
Of course: when we add company, it will start on a new line under header. Maybe you want the text to be on the same line.
In that case, why not use a PdfPTable?
PdfPTable myTable = new PdfPTable(3);
myTable.WidthPercentage = 100;
PdfPCell mydate = new PdfPCell(new Phrase("April 22, 2015", myfont));
mydate.Border = Rectangle.NO_BORDER;
myTable.AddCell(mydate);
PdfPCell header = new PdfPCell(new Phrase("Certificate of Analysis", titleFont));
header.Border = Rectangle.NO_BORDER;
header.HorizontalAlignment = Element.ALIGN_CENTER;
myTable.AddCell(header);
PdfPCell address = new PdfPCell(new Phrase("Company Address", AddressFont));
address.Border = Rectangle.NO_BORDER;
address.HorizontalAlignment = Element.ALIGN_RIGHT;
myTable.AddCell(address);
doc.Add(myTable);
Now the available width of your page will be divided in three, the date will be aligned to the left, the header will be centered, and the address will be aligned to the right. Obviously, you can add more data to a PdfPCell and more rows to the PdfPTable. This is just a simple proof of concept.
Another option, is to add the text at an absolute position (using coordinates). This can be done by using the ColumnText object. There are plenty of examples on this in The Best iText Questions on StackOverflow

iText - Strange column- / page changing behaviour with ColumnText

I am quite new to iText and trying to accomplish the following:
read a list of text files from local hd
arrange the texts of the files in a 2-column layout pdf file
add a consecutively numbered index before each text
I started with the MovieColumns1 example (http://itextpdf.com/examples/iia.php?id=64) and ended up with the following code:
final float[][] COLUMNS_COORDS = { { 36, 36, 296, 806 }, { 299, 36, 559, 806 } };
Document document = new Document(PageSize.A4);
PdfWriter writer = PdfWriter.getInstance(document, resultFile);
document.open();
ColumnText ct = new ColumnText(writer.getDirectContent());
ct.setSimpleColumn(COLUMNS_COORDS[0][0], COLUMNS_COORDS[0][1],
COLUMNS_COORDS[0][2], COLUMNS_COORDS[0][3]);
File textDir = new File("c:/Users/raddatz/Desktop/123/texts/");
File[] files = textDir.listFiles();
int i = 1;
int column = 0;
for (File file : files) {
String text = FileUtils.readFileToString(file, "UTF-8");
float yLine = ct.getYLine();
System.out.println("adding '" + file.getName() + "'");
PdfPCell theText = new PdfPCell(new Phrase(text, new Font(Font.HELVETICA, 10)));
theText.setBorder(Rectangle.NO_BORDER);
theText.setPaddingBottom(10);
PdfPCell runningNumber = new PdfPCell(new Phrase(new DecimalFormat("00").format(i++), new Font(
Font.HELVETICA, 14, Font.BOLDITALIC,
new Color(0.7f, 0.7f, 0.7f))));
runningNumber.setBorder(Rectangle.NO_BORDER);
runningNumber.setPaddingBottom(10);
PdfPTable table = new PdfPTable(2);
table.setWidths(new int[] { 12, 100 });
table.addCell(runningNumber);
table.addCell(theText);
ct.addElement(table);
int status = ct.go(true);
if (ColumnText.hasMoreText(status)) {
column = Math.abs(column - 1);
if (column == 0) {
document.newPage();
System.out.println("inserting new page with size :" + document.getPageSize());
}
ct.setSimpleColumn(
COLUMNS_COORDS[column][0], COLUMNS_COORDS[column][1],
COLUMNS_COORDS[column][2], COLUMNS_COORDS[column][3]);
yLine = COLUMNS_COORDS[column][3];
System.out.println("correcting yLine to: " + yLine);
} else {
ct.addElement(table);
}
ct.setYLine(yLine);
System.out.println("before adding: " + ct.getYLine());
status = ct.go(false);
System.out.println("after adding: " + ct.getYLine());
System.out.println("--------------------------------");
}
document.close();
Here you can see the result:
http://d.pr/f/NEmx
Looking at the first page of the resulting PDF I assumed everything was working out fine.
But on second page you can see the problem(s):
text #31 is not displayed completely (first line + index is cut / not in visible area)
text #46 is not displayed completely (first three lines + index is cut / not in visible area)
On page 3 everything seems to be ok again. I am really lost here.
-- UPDATE (2013-03-14) --
I have analyzed the contents of the PDF now. The problem is not that content is show in non-visible areas but that the content is not present in the pdf at all. The missing part of the content is exactly the one which would have fit in the previous column / page. So it seems like ColumnText.go(true) is manipulating the object passed by addElement() before. Can someone confirm this? If so: what can I do about it?
-- end UPDATE (2013-03-14) --
Looking forward to your reply
regards,
sven
Solved! As soon as ColumnText indicates a table will not fit the current column I reinitialize ct with a new instance of ColumnText and add the table again.
In other words:
Each instance of ColumnText is exactly dealing one column of my document.
if (ColumnText.hasMoreText(status) || mediaPoolSwitch) {
column = Math.abs(column - 1);
if (mediaPoolSwitch) {
currentMediaPool = mediapool;
column = 0;
}
if (column == 0) {
document.newPage();
writeTitle(writer.getDirectContent(), mediapool.getName());
}
ct = new ColumnText(writer.getDirectContent());
ct.addElement(table);
ct.setSimpleColumn(
COLUMNS_COORDS[column][0], COLUMNS_COORDS[column][1],
COLUMNS_COORDS[column][2], COLUMNS_COORDS[column][3]);
yLine = COLUMNS_COORDS[column][3];
LOG.debug("correcting yLine to: " + yLine);
} else {
ct.addElement(table);
}
ct.setYLine(yLine);
ct.go();