I'm creating a web app and using a php FPDF script to creates and print out a pdf. This also prints out on the pdf images that are uploaded to the app, which is no problem. However, it needs to do the same thing for an uploaded pdf and that is where my problem lies. How can I print a pdf as an image inside of a pdf using fpdf?
I have heard of imageMagick but I don't think that is an option because it is a software and I don't know where I would run it.
You can use FPDI to import a page of an existing PDF document and place it with FPDF onto a newly created page:
<?php
require_once('fpdf.php');
require_once('fpdi.php');
$pdf = new FPDI();
// load the document and get the total page count
$pageCount = $pdf->setSourceFile("the/document/you/want/to/import/a/page/from.pdf");
// import the first page
$tplIdx = $pdf->importPage(1);
// add a page
$pdf->AddPage();
// use the imported page on x=10, y=10 and a width of 90
$pdf->useTemplate($tplIdx, 10, 10, 90);
// output the PDF document
$pdf->Output();
Related
I created a document file from word and has exported as pdf . i want to show the pdf content inside the Div element in razor page. How can I show the pdf content from razor page. Please can you provide an example code how to show in blazor server side
If you stored your pdf file directly in your documents for example in the folder wwwroot/pdf.
wwwroot/pdf/test.pdf
You can display this PDF with this line of html bellow :
< embed src="pdf/test.pdf" style="width=100%; height=2100px;" />
It will provide you a pdf displayer with printing options !
If you want to go further, upload your file and then display it, I will recommend you to go check this explanation :
https://www.learmoreseekmore.com/2020/10/blazor-webassembly-fileupload.html
The upload for PDF files works the same as Img file, you need to go check IBrowserFile documentation.
You will see that it has a Size obj and a OpenReadStream() function that will help you get the display Url for your file (image or pdf)
If the site abow closes, this is the upload code that is shown on it :
#code{
List<string> imgUrls = new List<string>();
private async Task OnFileSelection(InputFileChangeEventArgs e)
{
foreach (IBrowserFile imgFile in e.GetMultipleFiles(5))
{
var buffers = new byte[imgFile.Size];
await imgFile.OpenReadStream().ReadAsync(buffers);
string imageType = imgFile.ContentType;
string imgUrl = $"data:{imageType};base64,{Convert.ToBase64String(buffers)}";
imgUrls.Add(imgUrl);
}
}
}
This code was written by Naveen Bommidi, author of the blog where I found this usefull code
If you want, as I said, upload a PDF and then display it.
You can use the same html line :
< embed src="#imgUrl" style="width=100%; height=2100px;" />
And your uploaded files will be displaying.
Example
I am developing an Android app for flight reservation and i am using firebase Database for storing and retriving data. I need to generate a PDF of Ticket and contents should be changed as per passenger details and stored in local directory. I have a template of Ticket. What should i do?
Thank you in advance.
Since Android 5 you can use PdfDocument and its friend classes to generate a PDF document on Android device. The official documentation is here. There is no library to use a template with PdfDocument. You have to use some drawing primitive to accomplish your task.
Here is a sample to generate a PDF with a single page A4:
// create a new document
PdfDocument document = new PdfDocument();
// crate a page description
PageInfo pageInfo = new PageInfo.Builder(595, 842, 1).create();
// start a page
Page page = document.startPage(pageInfo);
Canvas canvas=page.getCanvas());
// draw something on the page
Paint paint = new Paint();
paint.setColor(Color.RED);
canvas.drawCircle(50, 50, 30, paint);
// finish the page
document.finishPage(page);
// write the document content
document.writeTo(getOutputStream());
// close the document
document.close();
The page content is defined with Canvas object. Just another example. I hope this helps you.
I am working in LARAVEL 6.8.
I worknig on to generate New PDF which uses existing PDF as a background template.
I have tried FPDF & FPDI packages but I couldn't find a way to add data in it.
Below is the code which I have tried but this simple code also gives back the empty pdf.
$pdf = new \setasign\Fpdi\Fpdi();
$pdf->AddPage();
$pdf->setSourceFile('existingPDFfile.pdf'); <--- This PDF has a header and footer already in it.
$tplIdx = $pdf->importPage(1);
$pdf->useTemplate($tplIdx, 10, 10, 200);
$pdf->SetFont('Arial');
$pdf->SetTextColor(255,0,0);
$pdf->SetXY(50, 50);
$pdf->Write(0, "Ajay Patel");
$pdf->Output('D','test.pdf', "F");
In further, I need to use this existing PDF as a template and want to add new data in the body of pdf and generate new pdf from it which has a background of this "Template PDF".
I hope i have explained myself.
I have been searching for days for a solution to this problem.
Description : I have a website which loads a PDF dynamically via an iFrame. The PDF is saved on the server and the user of the website can view the pdf on the website.
Problem : Introduce a Print button on website which prints the PDF which was created dynamically and saved on the server.
Is this even possible ? I am looking at a cross-browser implementation as well to make things worse. I have tried n number of JS options from the web but none of them seem to work. I can not seem to get the PDF printed in the same way as it looks. To put it short, I am trying to emulate the print button which appears on the PDF when it is loaded. Is there an option to pass the pdf document from the server to the print dialog box ?
Description : I have a website which loads a PDF dynamically via an iFrame. The PDF is saved on the server and the user of the website can view the pdf on the website.
Problem : Introduce a Print button on website which prints the PDF which was created dynamically and saved on the server.
Solution : I could not find an exact solution to this problem, but here is how I solved the problem -
Create the 'Print' as per req and redirect that to another page which has only the PDF.
Copy the previous PDF & Create new PDF with JS - this.print() such that when it opens up, the print dialog pops up directly to the user.
In the new page -
if ("Location of PDF " != null)
{
sPdf = "Location of PDF ";
PdfReader pReader = new PdfReader(sPdf);
Document document = new Document
(pReader.GetPageSizeWithRotation(ApplicationConstants.INDEX_ONE));
int n = pReader.NumberOfPages;
FileStream fs = new FileStream
("New PDF location",
FileMode.Create, FileAccess.Write);
PdfCopy copy = new PdfCopy(document, fs);
// Write to pdf
document.Open();
for (int i = ApplicationConstants.INDEX_ONE; i <= n; i++)
{
PdfImportedPage page = copy.GetImportedPage(pReader, i);
copy.AddPage(page);
}
copy.AddJavaScript("this.print(true);", true);
document.Close();
pReader.Close();
inStr = File.OpenRead("New PDF location");
while ((bytecnt = inStr.Read
(buffer, ApplicationConstants.INDEX_ZERO, buffer.Length))
> ApplicationConstants.INDEX_ZERO)
{
if (Context.Response.IsClientConnected)
{
Context.Response.ContentType = "application/PDF";
Context.Response.OutputStream.Write(buffer,
ApplicationConstants.INDEX_ZERO, buffer.Length);
Context.Response.Flush();
}
}
}
Please note that I am using itextsharp to inject the JS script into the new PDF. Hope this helps someone else. I am trying to find another solution without the usage of itextsharp or any other dll but this will have to do for now.
I am not sure if this will work, but you could try launching a popup window with a special version of your PDF file that opens the print dialog when opened. Then close the popup afterwards. This last part might be tricky since I think there is no clean way to know if the print dialog has been closed.
I pieced together some code to insert a dynamic image into a PDF using both ColdFusion and iText, while filling in some form fields as well. After I got it working and blogged about it, I couldn't help but think that there might be a better way to accomplish this. I'm using the basic idea of this in a production app right now so any comments or suggestion would be most welcomed.
<cfscript>
// full path to PDF you want to add image to
readPDF = expandpath(”your.pdf”);
// full path to the PDF we will output. Using creatUUID() to create
// a unique file name so we can delete it afterwards
writePDF = expandpath(”#createUUID()#.pdf”);
// full path to the image you want to add
yourimage = expandpath(”dynamic_image.jpg”);
// JAVA STUFF!!!
// output buffer to write PDF
fileIO = createObject(”java”,”java.io.FileOutputStream”).init(writePDF);
// reader to read our PDF
reader = createObject(”java”,”com.lowagie.text.pdf.PdfReader”).init(readPDF);
// stamper so we can modify our existing PDF
stamper = createObject(”java”,”com.lowagie.text.pdf.PdfStamper”).init(reader, fileIO);
// get the content of our existing PDF
content = stamper.getOverContent(reader.getNumberOfPages());
// create an image object so we can add our dynamic image to our PDF
image = createobject(”java”, “com.lowagie.text.Image”);
// get the form fields
pdfForm = stamper.getAcroFields();
// setting a value to our form field
pdfForm.setField(”our_field”, “whatever you want to put here”);
// initalize our image
img = image.getInstance(yourimage);
// centering our image top center of our existing PDF with a little margin from the top
x = (reader.getPageSize(1).width() - img.scaledWidth()) - 50;
y = (reader.getPageSize(1).height() - img.scaledHeight()) / 2 ;
// now we assign the position to our image
img.setAbsolutePosition(javacast(”float”, y),javacast(”float”, x));
// add our image to the existing PDF
content.addImage(img);
// flattern our form so our values show
stamper.setFormFlattening(true);
// close the stamper and output our new PDF
stamper.close();
// close the reader
reader.close();
</cfscript>
<!— write out new PDF to the browser —>
<cfcontent type=”application/pdf” file = “#writePDF#” deleteFile = “yes”>
<cfpdf> + DDX seems possible.
See http://forums.adobe.com/thread/332697
I have made it in another way with itext library
I don´t want overwrite my existing pdf with the image to insert, so just modify the original pdf inserting the image, just insert with itext doesn´t work for me.
So, I have to insert the image into a blank pdf (http://itextpdf.com/examples/iia.php?id=59)
And then join my original pdf and the new pdf-image. Obtaining one pdf with several pages.
(http://itextpdf.com/examples/iia.php?id=110)
After that you can overlay the pdf pages with this cool concept
http://itextpdf.com/examples/iia.php?id=113