silverPDF - Silverlight PDF library

New Post: Loading an image

aplomo — Fri, 17 Feb 2012 13:25:59 GMT

Hi,

I want to show an png in my pdf, but I always get an error. I am using the following code to read the image:

WebClient client = new WebClient();
                client.OpenReadCompleted += (sender, e) =>
                {
                    if (e.Error == null)
                    {
                        this.polLogo = XImage.FromStream(e.Result);
                    }
                };
                client.OpenReadAsync(new Uri("http://localhost:6976/ClientBin/Resources/Images/Icons/images.png", UriKind.Absolute));

Then I use this one to draw it:

this.document = new PdfDocument();
                PdfPage page = this.document.AddPage();
                page.Size = PageSize.A4;

                XGraphics gfx = XGraphics.FromPdfPage(page);

                // Rectangle to write text in
                XRect lRect = new XRect(0.0, 20.0, page.Width.Value, 20);

                gfx.DrawImage(this.polLogo, 50, 50);

                // Dispose graphics object
                gfx.Dispose();

While the method DrawImage following exception (translated into english from me) is thrown:

"The Value must not be null
Parametername: value

   bei PdfSharp.Pdf.PdfDictionary.DictionaryElements.set_Item(String key, PdfItem value)
   bei PdfSharp.Pdf.Advanced.PdfImage.Merge(PdfDictionary other)
   bei PdfSharp.Pdf.Advanced.PdfImage..ctor(PdfDocument document, XImage source_image)
   bei PdfSharp.Pdf.Advanced.PdfImageTable.GetImage(XImage image)
   bei PdfSharp.Pdf.PdfPage.GetImageName(XImage image)
   bei PdfSharp.Drawing.Pdf.XGraphicsPdfRenderer.GetImageName(XImage image)
   bei PdfSharp.Drawing.Pdf.XGraphicsPdfRenderer.Realize(XImage image)
   bei PdfSharp.Drawing.Pdf.XGraphicsPdfRenderer.DrawImage(XImage image, Double x, Double y, Double width, Double height)
   bei PdfSharp.Drawing.XGraphics.DrawImage(XImage image, Double x, Double y)
   bei PdfSharp.Drawing.XGraphics.DrawImage(XImage image, Int32 x, Int32 y)
   bei Polizeiliche_Fotografie.Code.Helper.PdfHelper.CreatePdf(String quizName, String userName, Int32 reachablePoints, Int32 reachedPoints)"

The image is read correctly but it is not drawn. Can somebody help me? I use Silverlight 4.

New Post: Text string spacing is not right....

Ai_boy — Wed, 08 Feb 2012 01:58:41 GMT

Also try diffrent fonts, some of them work better with this !$#^$#$5 librarry :)

New Post: Text string spacing is not right....

patricka — Wed, 08 Feb 2012 01:56:33 GMT

I will try, pity that it is now included into a recent binary download if it works.

New Post: Text string spacing is not right....

Ai_boy — Wed, 08 Feb 2012 01:48:13 GMT

read this

http://silverpdf.codeplex.com/discussions/232794

New Post: Text string spacing is not right....

patricka — Wed, 08 Feb 2012 01:39:55 GMT

I'm running into a similar problem, the interword spacing is just way too large. I'm using "Courier" as a font...

Is there a sample where this works ?

I tried PDFsharp Sample: Text Layout the one with four rectangles of different alignments on a salmon background (Straight from the Source Test file) and it does not space characters properly.

There is probably a problem with my setting: the font that displays in these salmon rectangles is bold and definitively not Times Roman.

I'm using SilverLight 4 and VS 2010.

New Post: Is there a way to make sure the file may not be altered?

Ai_boy — Wed, 08 Feb 2012 01:33:54 GMT

np :)

New Post: Is there a way to make sure the file may not be altered?

patricka — Wed, 08 Feb 2012 01:32:37 GMT

Well, Ai_Boy thank you for your responsiveness.

New Post: Is there a way to make sure the file may not be altered?

Ai_boy — Wed, 08 Feb 2012 01:12:28 GMT

I have to dissapoint you here. IText code used in this project only for Image support. There is nothing i can help you right now. I will try to solve that in the next version

New Post: Is there a way to make sure the file may not be altered?

patricka — Wed, 08 Feb 2012 01:06:08 GMT

My bad : a caching problem in Chrome, the browser was still using the old code.

But I'm note sure it has everything I want in any case.

Certificates would really be the way. I know IText (Java) has it, I have already used it.

New Post: Is there a way to make sure the file may not be altered?

Ai_boy — Wed, 08 Feb 2012 01:03:05 GMT

Well, it seems that i have to digg into that. I can't say for sure right now is it SilverPDF bug or is it PDFSharp bug. Give me some time, I'll give you a response as soon as i get some results.

New Post: Is there a way to make sure the file may not be altered?

patricka — Wed, 08 Feb 2012 00:34:41 GMT

I did.

PdfSecuritySettings securitySettings = document.SecuritySettings;

securitySettings.PermitAccessibilityExtractContent = false;

securitySettings.PermitAnnotations = false;

securitySettings.PermitAssembleDocument = false;

securitySettings.PermitExtractContent = false;

securitySettings.PermitFormsFill = false;

securitySettings.PermitFullQualityPrint = false;

securitySettings.PermitModifyDocument = false;

securitySettings.PermitPrint = false;

securitySettings.DocumentSecurityLevel = PdfDocumentSecurityLevel.None;

document.Save(dlg.OpenFile());

Still produces a PDF that requests me for a password (no where supplied!), and when I supply "owner" as the password I see protection levels that bear no ressemblance to what I set...

New Post: Is there a way to make sure the file may not be altered?

Ai_boy — Wed, 08 Feb 2012 00:21:30 GMT

I know that my question my sound stupid to you... but... why don't you just try to implement PdfSharp example with SilverPDF? :)

I'll say it again. SilverPDF is 99% based on PdfSharp. The two main problems in SilverPDF is luck of "printing" support and Images support (it's a little bit laggy for some type of images)

PS: don't forget to download source code - you can find a lot of examples how to use SilverPDF up there.

New Post: Is there a way to make sure the file may not be altered?

patricka — Wed, 08 Feb 2012 00:06:03 GMT

THere is also a sample how to protrect (http://www.pdfsharp.net/wiki/ProtectDocument-sample.ashx).

I'm just wondering if SilverPDF supports this...

Anyone got it to work? I don't want my users to be able to alter the documents and I don't want them to key a password to view the file.

New Post: Is there a way to make sure the file may not be altered?

Ai_boy — Tue, 07 Feb 2012 21:42:18 GMT

look at this http://pdfsharp.com/PDFsharp/index.php?option=com_content&task=view&id=39&Itemid=50

this is an example how you could "UNPROTECT" a document... so, if you can "unprotect" then it's mean that you can "protect" it using same method.

New Post: Is it possible to sign an PDF with a certificate

Ai_boy — Tue, 07 Feb 2012 21:37:30 GMT

i'm not quite shure about that, SilverPdf is based on PdfSharp (http://www.pdfsharp.net) so... if PdfSharp have this ability then SilverPDF will have it too :)

New Post: Is there a way to make sure the file may not be altered?

patricka — Tue, 07 Feb 2012 21:29:14 GMT

Is there any way that Silverlight could enforce some security ? At least a readonly protection ?

New Post: Is it possible to sign an PDF with a certificate

patricka — Tue, 07 Feb 2012 21:26:05 GMT

Can Silverpdf sign a PDF with a certificate?

New Post: Copyright character in text

ghostuz — Thu, 26 Jan 2012 19:57:04 GMT

Hi there. I found some special character like copy right will display as "?" is because the font not have this character. you can input these word and print to PDF file. and you will see the copy right character use the font "Calibri". you can use this font to draw these character and set the font options encoding to Unicode.

some very useful skill: use word to input your content. print to pdf (use adobe pdf printer is better) and check the pdf file fonts.

This is my way to fix the blod style.

XPdfFontOptions options = new XPdfFontOptions(PdfFontEncoding.Unicode, PdfFontEmbedding.None);
XFont titleFont = new XFont("Arial-BoldMT", 14);
XFont contentFont = new XFont("ArialMT", 14);
XFont copyrightFont = new XFont("Calibri", 7, XFontStyle.Regular, options);
var blackColor = new XSolidBrush(XColors.Black);

gfx.DrawString("hello world", titleFont, blackColor, 10, 10);
gfx.DrawString("hello world", contentFont, blackColor, 20, 10);
gfx.DrawString("©", copyrightFont, blackColor, 30, 10);

New Post: Multipage PDF from several images.

jamesatcodeplex — Thu, 19 Jan 2012 14:57:46 GMT

Use PdfReader.Open to open the pdf file and returns a PdfDocument object, thus can use AddPage method

Note: you need to specify PdfDocument.Version before saving, otherwise PdfReader.Open will throw an excepction as per this line:

  if (document.version == 0)
          throw new InvalidOperationException(PSSR.InvalidPdf);

Created Issue: Bug in RelacedPdfImage.cs [11627]

jamesatcodeplex — Fri, 13 Jan 2012 16:27:59 GMT

I'm using silverpdf-60830 code base, and encountered an error in a windows phone app I'm wring on

The line " Elements[key] = t;" will throw an error when the t is null, should check if null before set the value in next line.

Code Before:

public void Merge(PdfDictionary other)
{
foreach (var key in other.Elements.Keys)
{
//var k = new PdfName(key);
var t = other.Elements.GetObject(key);
Elements[key] = t;

}

}

Code After:
public void Merge(PdfDictionary other)
{
foreach (var key in other.Elements.Keys)
{
//var k = new PdfName(key);
var t = other.Elements.GetObject(key);
if (t != null) //JZ: cannot add null value, otherwise exception occurrs
{
Elements[key] = t;
}

}

}