PDF - fit page programmatically

Brian Daul

18y15.9k

I have created a vb.net application that batch processes PDF’s and prints them. I have run into an issue where the image on the PDF is greater than the size of the page. If the image is brought up in the PDF viewer the image size is 31.1%. When it is printed it retains that size. The fit to page setting is set on the PDF image viewer.

If anyone could point me in the direction to programmatically enable the fit to page capabilities it would be extremely appreciatated.

Thanks.

Dim Process As New Process()

Dim pathToExecutable As String = "AcroRd32.exe"

Dim sReport = strFile

Dim starter As New ProcessStartInfo(pathToExecutable, "/t """ + sReport + """ """ + Me.txtPrinter.Text + """")

Process.StartInfo.FileName = sReport

Process.StartInfo.Verb = "Print"

Process.StartInfo.CreateNoWindow = True

Process.Start()

Process.WaitForExit(10000)

Process.CloseMainWindow()

Process.Close()

Process.Dispose()

Process = Nothing

starter = Nothing

3 Replies

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Andra Chahar7y ago
Hi, there is a solution may be viable. It first extracts the image from pdf file, and then resize for the image so that it can fit the page size , lastly, does a replacement with the new image in pdf file. This solution depends on Spire.Pdf free api. https://www.nuget.org/packages/FreeSpire.PDF/. Hope this can help you.
                        PdfDocument pdf = new PdfDocument();
                        pdf.LoadFromFile("D:\\test.pdf");
                        PdfPageBase page = pdf.Pages[0];
                        //extract the image
                        Image image = page.ExtractImages()[0];

                        //resize
                        float widthFitRate = image.PhysicalDimension.Width / page.Canvas.ClientSize.Width;
                        float heightFitRate = image.PhysicalDimension.Height / page.Canvas.ClientSize.Height;
                        float fitRate = Math.Max(widthFitRate, heightFitRate);
                        float fitWidth = image.PhysicalDimension.Width / fitRate;
                        float fitHeight = image.PhysicalDimension.Height / fitRate;
                        Bitmap m_objBitmap = new Bitmap((int)fitWidth, (int)fitHeight);
                        Graphics g = Graphics.FromImage(m_objBitmap);
                        g.DrawImage(image, 0, 0, fitWidth, fitHeight);

                        PdfImage newImage = PdfImage.FromImage(m_objBitmap);
                        page.ReplaceImage(0, newImage);

                        pdf.SaveToFile("D:\\result.pdf");
Ejackal7y ago
Acrodat reader page to fit data are stored in register , check register and change to page fit.
RegistryKey regKey = Registry.CurrentUser;
               regKey = regKey.CreateSubKey(@"Software\Adobe\Acrobat Reader\11.0\AVGeneral");
               int bprintExpandToFit = (int)regKey.GetValue("bprintExpandToFit", (object)0);
refer Code snippets

http://www.ecomparefiles.com/code/csharp/how_to_print_pdf_file_to_fit_page.aspx
Brian Daul18y ago
Dim Process As New Process()
Dim pathToExecutable As String = "C:\Program Files\Adobe\Reader 8.0\Reader\AcroRd32.exe"
Dim sReport = "C:\Temp\TheDocument.pdf"
Dim TheDefaultPrinter = "MyPrinter"

Process.StartInfo.UseShellExecute = False
Process.StartInfo.FileName = pathToExecutable
Process.StartInfo.Arguments = "/t """ + sReport + """ """ + TheDefaultPrinter + """"
Process.StartInfo.Verb = "Print"
Process.StartInfo.CreateNoWindow = True
Process.StartInfo.WindowStyle = ProcessWindowStyle.Hidden
Process.Start()
Process.Close()
Process.WaitForExit(10000)
Process.CloseMainWindow()

Process.Dispose()
Process = Nothing

The Adobe Reader has a setting in it that allows you to "Fit To Page" under View\Zoom\Fit to Page. Once you select that value and File\Close the Adobe Reader the settings are set in your computer registry.

A Process() instance was started against Adobe Reader with arguments. The arguments included the file name and the printer that it was suppose to use.

This code launched Adobe Reader and used the values that are set in the registry. That way everything fits to the page and it prints with those dimensions.

The drawback is that Adobe Reader is displayed briefly on the screen with the PDF displayed in. It will close after it is done processing.