i'm italian and i'm sorry for my english.
I'm trying to use itextSharp to convert a txt file into pdf file.
this is my code:
String l = file.ReadLine() + "\r\n";
while (l != null)
{
iTextSharp.text.Font contentFont = iTextSharp.text.FontFactory.GetFont("Arial", 8, iTextSharp.text.Font.NORMAL);
//Chunk line = new Chunk(l, contentFont);
Paragraph p2 = new Paragraph(l,contentFont);
oDoc.Add(p2);
oDoc.Add(Chunk.NEWLINE);
l = file.ReadLine();
}
oDoc.Close();
The text page is a multi page file, so I would like to reproduce the same on the pdf file.
When i read "Page 2" on my txt file, I need to create a new page in the pdf file.
I would like to put all the text before page 2 in only one pdf page.
How can i fit all the text in only one pdf page?
Thank's so much and sorry for my english
Well, if you reach the end of a text page before the end of a PDF page, you can just call oDoc.newPage(). The alternative isn't so simple.
The only Easy Way To Do It would be to create a text field on each page, with the multiline flag set. You then set the font size to zero and the field will automatically pick a font size that will size the font to fit the available space (within some reasonable limits).
You could also use a ColumnText and call go(true). This will "simulate" layout allowing you to make adjustments to the actual font size prior to actually drawing the text to a content stream.
Related
[UNITY C#]
I have one string (a large one) of the contents in a book. I want to display this string in the text on page one. However, when the page one text overflows I want to display the overflowing words in the text on page two.
Page One Text Image
Page Two Text Image
For example, the text below that goes off the page should go on page two.
Overflowing text image
text01.text = someString;
//force canvas update so we can get correct result from cachedTextGenerator
Canvas.ForceUpdateCanvases ();
int truncateIndex = text01.cachedTextGenerator.characterCountVisible;
text01Continued.text = someString.Substring (truncateIndex);
This solved my problems!
Credit to tlutz in this answer: https://forum.unity.com/threads/get-truncated-string.324412/
I am trying to use PDFsharp and MigraDoc to create a PDF report file from many other files.
Basically the workflow is as follows:
The user uploads 2 or more documents to concatenate
The user selects what pages they want to include in the TOC
The documents are concatenated together and a table of contents is generated
Now I am able to easily concatenate the documents and add bookmarks/outlines in PDFsharp. Where I have run into problems is when using MigraDoc to create the TOC referencing the PDFsharp created bookmarks/outlines as the targets of the hyperlinks.
Code to add bookmark/outline in PDFsharp (successfully adds the bookmarks):
// Current document is a PdfDocument and Title is the name of the bookmark
CurrentDocument.Outlines.Add(title, page, true, PdfOutlineStyle.Bold);
MigraDoc code to create the TOC page and render it to the current PDFsharp document:
// Create blank page
PdfPage page = (!hasTitlePage)
? AddPage(null, 0, TOC_BOOKMARK_TITLE) // Add to start
: AddPage(null, 1, TOC_BOOKMARK_TITLE); // Add after title page
// Get Graphics obj
XGraphics gfx = XGraphics.FromPdfPage(page);
gfx.MUH = PdfFontEncoding.Unicode;
// Create MigraDoc document + Setup styles
Document document = new Document();
DefineStyles(document);
// Add header
Section section = document.AddSection();
Paragraph paragraph = section.AddParagraph("Table of Contents");
paragraph.Format.Font.Size = 14;
paragraph.Format.Font.Bold = true;
paragraph.Format.SpaceAfter = 24;
paragraph.Format.OutlineLevel = OutlineLevel.Level1;
// Add links - these are the PdfSharp outlines/bookmarks added previously when concatinating the pages
foreach (var bookmark in CurrentDocument.Outlines)
{
paragraph = section.AddParagraph();
paragraph.Style = "TOC";
Hyperlink hyperlink = paragraph.AddHyperlink(bookmark.Title);
hyperlink.AddText($"{bookmark.Title}\t");
hyperlink.AddPageRefField(bookmark.Title);
}
// Render document
DocumentRenderer docRenderer = new DocumentRenderer(document);
docRenderer.PrepareDocument();
docRenderer.RenderPage(gfx, 1);
return page;
Note - the MigraDoc code adds the TOC page but it doesn't recognize the PDFsharp bookmarks.
Screenshot of the TOC:
The TOC page is added at the start (although the TOC bookmark is listed at the end) but I cannot link to PDFsharp bookmarks
I am certain that the issue is with my understanding of MigraDoc and/or PDFsharp.
First prize would be to only use PDFsharp to add the TOC. I would appreciate any help in being pointed in the right direction.
MigraDoc is a world of its own - it uses PDFsharp to create PDF files, but cannot access internals of PDF files creates with PDFsharp (like Bookmarks in your case).
One approach: create the TOC with PDFsharp (as you already suggested).
Other approach: use MigraDoc to add pages from existing PDF files to a MigraDoc document to create the final PDF (you can add pages from PDF files like you add images).
With the second approach you can use the formatting capabilities of MigraDoc for the TOC and MigraDoc will insert the correct page numbers, provided you add MigraDoc Bookmarks for every image (imported PDF page).
With the first approach, you will have to do the formatting and insert the page numbers yourself, but you'll have more control over the final PDF.
Which is the "best" approach? Depends a bit on the extent of formatting you need for your TOC. With the second approach the TOC can have two or more pages and MigraDoc will take care of that automatically and entries in the TOC can have two or more lines and MigraDoc will also take care of that automatically. But I think a hack will be needed to add the Outlines (e.g. draw very small white text with the outline text somewhere on the page).
Update: For the PDFsharp only approach, you will add links with code like this:
PdfRectangle prect = new PdfRectangle(gfx.Transformer.WorldToDefaultPage(rect));
page.AddDocumentLink(prect, 1);
The second parameter to AddDocumentLink is the target page.
I have a pdf file created with itextsharp with images in the file. I would like to put a hyperlink in the file that if you pick the picture it will open that picture in a picture viewer. I can set a hyperlink to a web address but have no idea how to get it to open a file. Below is the code, yes I know that c:\test.jpg is a bad hardcoded file name but it is just a test. When you click the picture it does nothing but I have no idea how to tell it what to do.
iTextSharp.text.Image pic =TextSharp.text.Image.GetInstance(comment.examplePic);
pic.ScaleToFit(200f, 200f);
Chunk cImage = new Chunk(pic, 0, 0, false);
Anchor anchor = new Anchor(cImage);
anchor.Reference = "c:\\test.jpg";
doc.Add(pic);
doc.Add(anchor);
A PDF is self-contained. This means that all the resources needed to show the PDF are (usually) stored inside the PDF (exceptions are for instance fonts that can be retrieved from the operating system).
When you have an image that is shown on a PDF page, the bytes of that image are stored in what we call an Image XObject. An XObject is an object that is external to the page, but that is stored as a separate object inside the PDF file.
You are asking to serve the image bytes stored inside this separate object to a viewer on the operating system. This is impossible. I don't know of any viewer that can take those bytes and somehow forward them to an image viewer.
I can think of three possible workarounds. I don't know if any of these workarounds is acceptable to you.
1. Serve the image online
You could put the image on a server and use the code you have in your snippet to link to that online image. Of course: this will only work if the person viewing the document is online and clicks OK when his viewer asks him if it's OK to link to a resources on the internet.
2. Serve the image as an annotation
In this case, you create an annotation for which you create an appearance that renders that same image XObject in the annotation layer (all annotations are shown on top of the page content). You can easily change the visibility status of an annotation to make it invisible (in your case, this would be the default status) or visible (in your case, this would be triggered by a JavaScript action when clicking the link).
There's an example of such an annotation here: Advertisement. If you open advertisement.pdf, you see an image with a button that says "Close this advertisement". Once you click that, the status of the annotation will be changed to invisible. You could do something similar, but the other way round: click a link to make it visible instead of invisible.
This solution doesn't depend on an external viewer, the image is shown in the PDF viewer.
3. Add the image as optional content
Starting with PDF 1.5, PDF supports optional content. See for instance the OptionalContentExample. In this example, we have some questions and answers, but the answers are not visible by default. See layer_actions.pdf. There are links "on / off / toggle" to make the answers visible or invisible.
You could do the same with images: you could add them to a layer that is invisible by default, but that can be made visible if somebody clicks a link. However: this requires a viewer that supports OCG (optional content groups) and the actions to change the status of these OCGs. For instance: if you would try the layer_actions.pdf example in the PDF viewer in Chrome, it won't work, but if you download the PDF and open it in Adobe Reader, you'll see the behavior I described.
Summarized:
You are asking something that is impossible, but there are workarounds. Please post another question if you have chosen a workaround and you don't succeed in making that workaround word (but please take into account that not all viewers support every workaround).
no offence but too much knowledge sometimes makes you ignorant of small things.
simple solution to this problem is here
http://kuujinbo.info/iTextSharp/imageAnchor.aspx
sample code that i implemented works like charm
PdfPCell p1 = new PdfPCell();
p1 = new PdfPCell();
p1.Padding = 0;
p1.Border = 0;
PdfPTable nav = new PdfPTable(1);
nav.WidthPercentage = 100;
nav.SpacingAfter = 12;
navbarImg.Annotation= new Annotation(0, 0, 0, 0, ur);
p1.Image = navbarImg;
nav.AddCell(p1);
_doc.Add(nav);
I have a aspx page which generates charts using jQuery flot tool. Its working good. My new requirement is I have to place a button called "Export to Excel" in this page. Whenever I click this button, the charts which are generated by jQuery flot tool has to export to excel file as images. Its like copy and paste the image from html page to excel file. I tried so many ways but I cant get proper solution. Help me to solve this.
method 1:
1.In JavaScript, I convert the chart div into canvas and set source of asp image control into that image . Its displaying in browser as expected.
var data = canvas.toDataURL('image/jpg');
document.getElementById('ctl00_ctl00_ContentPlaceHolder1_ContentPlaceHolder1_imgChart').src=data;
}
});
2.But at server I cant access that image src even though I put the submit button in update panel.
string picName = imgChart.ImageUrl;
worksheet.Shapes.AddPicture(picName, Microsoft.Office.Core.MsoTriState.msoFalse, Microsoft.Office.Core.MsoTriState.msoCTrue, 10, 10, 100, 100);
It shows picName is null error.
method 2:
Convert the chart into image and store in a local folder
Add the image file from folder in the excel
But the problem is cant convert the chart into image and store in local folder.
This behaviour is expected in ASP.NET. Changing the src path (e.g. the ImageUrl property) with JavaScript of an Image won't be available in the postback.
I would try to store the value of the canvas also in a HiddenField and take the value from there in my server side code.
JavaScript
var data = canvas.toDataURL('image/jpg');
document.getElementById('ctl00_ctl00_ContentPlaceHolder1_ContentPlaceHolder1_imgChart').src=data;
document.getElementById('ctl00_ctl00_ContentPlaceHolder1_ContentPlaceHolder1_HiddenField1').value=data;
C#
string picName = HiddenField1.Value;
worksheet.Shapes.AddPicture(picName, Microsoft.Office.Core.MsoTriState.msoFalse, Microsoft.Office.Core.MsoTriState.msoCTrue, 10, 10, 100, 100);
Update: This approach will give you data: URL that will look like this data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADIA.
In order to save this string as an image in C# you need the following code which I found here. After saving this image to the file system (the file "~/temp/file.png") you can easily add it to excel.
C#
string data = #"data:image/png;base64,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";
var base64Data = Regex.Match(data, #"data:image/(?<type>.+?),(?<data>.+)").Groups["data"].Value;
var binData = Convert.FromBase64String(base64Data);
using (var stream = new MemoryStream(binData))
{
System.Drawing.Image image = new Bitmap(stream);
image.Save(Server.MapPath("~/temp/file.png"));
}
We are using itextsharp library in one of our project for creating pdf from html.
Everything works fine, but PDF does not create exact replica of html text.
Like for example if html is like :-
<font size="3"><font face="Courier New, Courier, monospace">Plesae <strong>enter
your</strong> text in below editor and click <font size="4">Generate button to view pdf
from html to publish add in india</font></font>
and below code is being used to generate PDF then the font size are not properly taken by itext
StringReader strReader = new StringReader(content);
arrList = HTMLWorker.parseToList(strReader, null);
Paragraph para = new Paragraph();
for (int k = 0; k < arrList.size(); ++k) {
para.add((com.lowagie.text.Element)arrList.get(k));
}
We have made changes in library for mapping font size like if font size 3 is given then take 12 but still exact replica is not being created, may be for Courier 3 we need to map 13, 14 what i really looking forward is, if there is any formula for setting font size accrodingly. The Html being generated from CkEditor.
You need to use LoadTagStyle to handle it.
EX.
StyleSheet styles = new StyleSheet();
styles.LoadTagStyle(HtmlTags.P, HtmlTags.FONTSIZE, "16");
arrList = HTMLWorker.parseToList(strReader, style);
And add tag to wrap your whole thing