We Keep Coding

How to write Arabic text using MigraDoc?

I am using ASP for this and I had to generate reports in PDF format and send the file back to clients so they can download it.
I made the reports using MigraDoc library and they were great but after I tried it with Arabic text I found the texts were in LTR and the characters were disjointed so I made this code to test things out
...............
MigraDoc.DocumentObjectModel.Document reportDoc = new MigraDoc.DocumentObjectModel.Document();
reportDoc.Info.Title = "test";
sec = reportDoc.AddSection();
string fileName = "test.pdf";
addformattedText(sec, "العبارة", true);
PdfDocumentRenderer renderer = new PdfDocumentRenderer(true);
renderer.Document = reportDoc;
renderer.RenderDocument();
MemoryStream pdfStream = new MemoryStream();
renderer.PdfDocument.Save(pdfStream);
byte[] bytes = pdfStream.ToArray();
...............
private void addformattedText(Section sec,string text, bool shouldBeBold = false)
{
var tf = sec.AddTextFrame();
var p = tf.AddParagraph(text);
p.Format.Font.Name = "Tahoma";
if (shouldBeBold) p.Format.Font.Bold = true;
}
I get the output like this
I have tried to encode the text and make it a unicode string using this code
private string getEscapedString(string text)
{
if (true || HasArabicCharacters(text))
{
string uString = "";
byte[] utfBytes = Encoding.Unicode.GetBytes(text);
foreach (var u in utfBytes)
{
if (u != 0)
{
uString += String.Format(#"\u{0:x4}", u);
}
}
return uString;
}
else
return text;
}
and get the returned string into a paragraph and save the PDF documents with unicode parameter set to true
But it is all the same.
I can not figure out how to get it done.
The reports were done using MigraDoc 1.50.5147 library.

The problem is Arabic language font have 4 different shap in begging,last,connected and alone, where Pdfsharp and MigraDoc can not recognize which shap to print farther more you need to reverse the character order to solve this you can use AraibcPdfUnicodeGlyphsResharper to help do such work as following:
using PdfSharp.Drawing;
using PdfSharp.Pdf;
using AraibcPdfUnicodeGlyphsResharper;
namespace MigraDocArabic
{
internal class PrintArabicUsingPdfSharp
{
public PrintArabicUsingPdfSharp(string path)
{
PdfDocument document = new PdfDocument();
document.Info.Title = "Created with PDFsharp";
System.Text.Encoding.RegisterProvider(System.Text.CodePagesEncodingProvider.Instance);
// Create an empty page
PdfPage page = document.AddPage();
// Get an XGraphics object for drawing
XGraphics gfx = XGraphics.FromPdfPage(page);
// Create a font
XFont font = new XFont("Arial", 20, XFontStyle.BoldItalic);
var xArabicString = "كتابة اللغة العربية شيئ جميل".ArabicWithFontGlyphsToPfd();
// Draw the text
gfx.DrawString("Hello, World!", font, XBrushes.Black, new XRect(0, 0, page.Width, page.Height), XStringFormats.Center);
gfx.DrawString(xArabicString, font, XBrushes.Black, new XRect(50, 50, page.Width, page.Height), XStringFormats.Center);
// Save the document...
document.Save(path);
}
}
}
Do not Forget the Extension method
By the way this is work with iText7 too
see the image for result
Result

PDFsharp does not support RTL languages yet:
http://www.pdfsharp.net/wiki/PDFsharpFAQ.ashx#Does_PDFsharp_support_for_Arabic_Hebrew_CJK_Chinese_Japanese_Korean_6
You can work around this limitation by reversing the string.
PDFsharp does not support font ligatures yet. You are probably able to work around this limitation by replacing letters with the correct glyph (start, middle, end) depending on the position.

WPF DocumentViewer Print Landscape Content Cut Off

I'm using DocumentViewer in a WPF XAML project. I create a fixed document with the following code. The page looks fine in the viewer. When I print it, it prints in landscape view, but the top 1-2 cm is cut off! I tried it without the scale transform on the dockpanel but that had no effect.
private void PrintReport()
{
PrintDialog pd = new PrintDialog();
pd.PrintQueue = LocalPrintServer.GetDefaultPrintQueue();
pd.PrintTicket = pd.PrintQueue.DefaultPrintTicket;
pd.PrintTicket.PageOrientation = PageOrientation.Landscape;
pd.PrintDocument(docViewer.Document.DocumentPaginator, "DaySheet");
}
public void BuildReport(DockPanel dpPrint)
{
try
{
// init
ScaleTransform st = new ScaleTransform(0.5, 0.5, 0, 0);
dpPrint.RenderTransform = st;
Size pgSize = new Size(96 * 11.69, 96 * 8.27);
FixedDocument fd = new FixedDocument();
// add page content
FixedPage fp = new FixedPage();
fp.Width = pgSize.Width;
fp.Height = pgSize.Height;
fp.Children.Add(dpPrint);
// set page content
PageContent pc = new PageContent();
pc.Child = fp;
fd.Pages.Add(pc);
// set up fresh XpsDocument
var uri = new Uri("pack://daysheet_report.xps");
PackageStore.RemovePackage(uri);
var stream = new MemoryStream();
var package = Package.Open(stream, FileMode.Create, FileAccess.ReadWrite);
PackageStore.AddPackage(uri, package);
var xpsDoc = new XpsDocument(package, CompressionOption.NotCompressed, uri.AbsoluteUri);
// write FixedDocument to the XpsDocument
var docWriter = XpsDocument.CreateXpsDocumentWriter(xpsDoc);
docWriter.Write(fd);
// display XpsDocument in DocumentViewer
docViewer.Document = xpsDoc.GetFixedDocumentSequence();
docViewer.Document.DocumentPaginator.PageSize = pgSize;
}
catch (Exception ex)
{
gFunc.ProcessError(ex);
}
}

I tried playing around with printer drivers but it seemed to make no difference. The printer driver I have installed is the correct one for my laser printer and the right version for Windows 10 64-bit. When I print from Word, Excel, PDF its all fine, but from my WPF app it crops the top part of the page content.
As is so often the case, I got around the problem with a hack. I just changed the page content to use a StackPanel and I placed a blank TextBlock as the first child to push the other content down.

System.ObjectDisposedException: 'Cannot access a closed file.'

For the past week or so this exception is causing me a headache, I can't for the life of me fix it. I'm using iTextSharp to merge PDF files and add a watermark on them if the user chooses to do so.
Here's the code for merging :
private void CreateMergedPdf(object sender, DoWorkEventArgs e)
{
using (FileStream stream = new FileStream(pdfname, FileMode.Create)) {
Document pdfDoc = new Document(PageSize.A4);
PdfCopy pdf = new PdfCopy(pdfDoc, stream);
pdfDoc.Open();
int i = 0;
foreach (File_class newpdf in AddedPDFs)
{
(sender as BackgroundWorker).ReportProgress(i++);
if (newpdf.toMerge)
{
PdfReader reader = new PdfReader(newpdf.file_path);
pdf.AddDocument(reader); //<!> Exception here
this.Dispatcher.Invoke(() => progBtxt.Text = "Merging file #" + newpdf.file_id + "..."); //Dispatcher.Invoke since UI is on seperate thread
if (add_wtrmk)//This is called for every FILE
{
AddWatermark(reader, stream);
}
}
}
}
}
And here's the code for the watermark:
private void AddWatermark(PdfReader reader, FileStream stream)
{
using (PdfStamper pdfStamper = new PdfStamper(reader, stream))//This is called for every PAGE of the file
{
for (int pgIndex = 1; pgIndex <= reader.NumberOfPages; pgIndex++)
{
Rectangle pageRectangle = reader.GetPageSizeWithRotation(pgIndex);
PdfContentByte pdfData; //Contains graphics and text content of page returned by pdfstamper
if (this.Dispatcher.Invoke(() => dropdown.Text == "Under Content"))
{
pdfData = pdfStamper.GetUnderContent(pgIndex);
}
else if (this.Dispatcher.Invoke(() => dropdown.Text == "Over Content"))
{
pdfData = pdfStamper.GetOverContent(pgIndex);
}
else//Just in case
{
MessageBox.Show("Something went wrong when adding the watermark");
return;
}
//Set font
pdfData.SetFontAndSize(BaseFont.CreateFont(BaseFont.HELVETICA_BOLD, BaseFont.CP1252, BaseFont.NOT_EMBEDDED), 40);
//Create new graphics state and assign opacity
PdfGState graphicsState = new PdfGState();
graphicsState.FillOpacity = 0.25F;
//Set graphics state to pdfcontentbyte
pdfData.SetGState(graphicsState);
//Color of watermark
pdfData.SetColorFill(BaseColor.GRAY);
pdfData.BeginText();
//Show text as per position and rotation
this.Dispatcher.Invoke(() => pdfData.ShowTextAligned(Element.ALIGN_CENTER, WtrmkTextbox.Text, pageRectangle.Width / 2, pageRectangle.Height / 2, 45));
pdfData.EndText();
}
}
}
The error appears on the code for merging, specifically the line " pdf.AddDocument(reader);" BUT I get this error only if I try to add watermarks on more than one files (with just one file it works perfectly).
I'm thinking either I am closing something too early, or addWatermark() does - I've tried changing our the using statemets to no avail. I must be missing something

Okay, it seems PdfStamper was the culprit, i passed the necessary arguements to AddWatermark() and added a simple if statement. Now everything works perfectly.
BIG thanks to Mark Rucker

Convert image to pdf using itextsharp [duplicate]

I have the following code but this code add only the last image into pdf.
try {
filePath = (filePath != null && filePath.endsWith(".pdf")) ? filePath
: filePath + ".pdf";
Document document = new Document();
PdfWriter writer = PdfWriter.getInstance(document,
new FileOutputStream(filePath));
document.open();
// document.add(new Paragraph("Image Example"));
for (String imageIpath : imagePathsList) {
// Add Image
Image image1 = Image.getInstance(imageIpath);
// Fixed Positioning
image1.setAbsolutePosition(10f, 10f);
// Scale to new height and new width of image
image1.scaleAbsolute(600, 800);
// image1.scalePercent(0.5f);
// Add to document
document.add(image1);
//document.bottom();
}
writer.close();
} catch (Exception e) {
LOGGER.error(e.getMessage());
}
Would you give me a hint about how to update the code in order to add all the images into the exported pdf? imagePathsList contains all the paths of images that that I want to add into a single pdf.
Best Regards,
Aurelian

Take a look at the MultipleImages example and you'll discover that there are two errors in your code:
You create a page with size 595 x 842 user units, and you add every image to that page regardless of the dimensions of the image.
You claim that only one image is added, but that's not true. You are adding all the images on top of each other on the same page. The last image covers all the preceding images.
Take a look at my code:
public void createPdf(String dest) throws IOException, DocumentException {
Image img = Image.getInstance(IMAGES[0]);
Document document = new Document(img);
PdfWriter.getInstance(document, new FileOutputStream(dest));
document.open();
for (String image : IMAGES) {
img = Image.getInstance(image);
document.setPageSize(img);
document.newPage();
img.setAbsolutePosition(0, 0);
document.add(img);
}
document.close();
}
I create a Document instance using the size of the first image. I then loop over an array of images, setting the page size of the next page to the size of each image before I trigger a newPage() [*]. Then I add the image at coordinate 0, 0 because now the size of the image will match the size of each page.
[*] The newPage() method only has effect if something was added to the current page. The first time you go through the loop, nothing has been added yet, so nothing happens. This is why you need set the page size to the size of the first image when you create the Document instance.

Android has the feature "PdfDocument" to achieve this,
class Main2Activity : AppCompatActivity() {
private var imgFiles: Array<File?>? = null
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main2)
imgFiles= arrayOfNulls(2)
imgFiles!![0] = File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES).toString() + "/doc1.png")
imgFiles!![1] = File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES).toString() + "/doc3.png")
val file = getOutputFile(File(Environment.getExternalStorageDirectory().absolutePath)
, "/output.pdf")
val fOut = FileOutputStream(file)
val document = PdfDocument()
var i = 0
imgFiles?.forEach {
i++
val bitmap = BitmapFactory.decodeFile(it?.path)
val pageInfo = PdfDocument.PageInfo.Builder(bitmap.width, bitmap.height, i).create()
val page = document.startPage(pageInfo)
val canvas = page?.canvas
val paint = Paint()
canvas?.drawPaint(paint)
paint.color = Color.BLUE;
canvas?.drawBitmap(bitmap, 0f, 0f, null)
document.finishPage(page)
bitmap.recycle()
}
document.writeTo(fOut)
document.close()
}
private fun getOutputFile(path: File, fileName: String): File? {
if (!path.exists()) {
path.mkdirs()
}
val file = File(path, fileName)
try {
if (file.exists()) {
file.delete()
}
file.createNewFile()
} catch (e: Exception) {
e.printStackTrace()
}
return file
}
}
finally enable the storage permission in manifest, this should works

How to convert a view into a PNG?

I want to create a PNG from a view. I am using this code:
//I instance the user control
ucFormToPrintView miViewToPrint = new ucFormToPrintView();
miViewToPrint.DataContext = ((ucFormToPrintView)CCForm).DataContext;
//I use a RenderTargetBitmap to render the user control
System.Windows.Media.Imaging.RenderTargetBitmap rtb = new System.Windows.Media.Imaging.RenderTargetBitmap(794, 1122, 72, 72, System.Windows.Media.PixelFormats.Pbgra32);
rtb.Render(miViewToPrint);
//I use an encoder to create the png
System.Windows.Media.Imaging.PngBitmapEncoder encoder = new System.Windows.Media.Imaging.PngBitmapEncoder();
encoder.Frames.Add(System.Windows.Media.Imaging.BitmapFrame.Create(rtb));
//I use a dialog to select the path where to save the png file
Microsoft.Win32.SaveFileDialog saveFileDialog = new Microsoft.Win32.SaveFileDialog();
saveFileDialog.FilterIndex = 1;
if (saveFileDialog.ShowDialog() == true)
{
using (System.IO.Stream stream = saveFileDialog.OpenFile())
{
encoder.Save(stream);
stream.Close();
System.Diagnostics.Process.Start(saveFileDialog.FileName);
}
}
The result is an empty png.
How can I create a png file from a user control?
Thank so much.

The UserControl has to be laid out at least once to be visible. You can achieve that by calling its Measure and Arrange methods.
var miViewToPrint = new ucFormToPrintView();
miViewToPrint.DataContext = ((ucFormToPrintView)CCForm).DataContext;
// layout, i.e. measure and arrange
miViewToPrint.Measure(new Size(double.PositiveInfinity, double.PositiveInfinity));
miViewToPrint.Arrange(new Rect(miViewToPrint.DesiredSize));
...
if (saveFileDialog.ShowDialog() == true)
{
using (var stream = saveFileDialog.OpenFile())
{
encoder.Save(stream);
}
System.Diagnostics.Process.Start(saveFileDialog.FileName);
}