/*
* Class constructor.
*
* Initiates the Accusoft.PdfXpressSdk.PdfXpress font and character map path.
*
* Please note that this program assumes the existance of the "library" folder
* with the Font and CMap copied from the PDFXpress DotNet SDK directory located
* under:
*
* [PDFXpress DotNet install directory]\PDFXpress\V7.0\Support
*
* */
public PDFXpressConverter()
{
pdfXpress = new Accusoft.PdfXpressSdk.PdfXpress();
string resourcePath = Environment.CurrentDirectory + @"\library\";
System.Console.WriteLine(resourcePath);
string fontPath = resourcePath + "Font";
string cmapPath = resourcePath + "CMap";
//init the PDFXPress object
pdfXpress.Initialize(fontPath, cmapPath);
}
/*
* ConvertPDF2Image
*
* Uses the Accusoft.PdfXpressSdk.PdfXpress to load a PDF file named "PDFFileName". It then parses
* through the pages starting at pageStart to pageEnd. Each PDF page parsed is saved
* as the format specified (bmp, png, gif, with jpg as the default) with the following naming convention:
*
* PDFFileName[CurrentPageNumber].format.
*
* CurrentPageNumber is the page number being converted, with trailing 0s if the number is less
* than a 4 digit number.
*
* Example:
*
* Page 389 of file "TestFile.pdf" as jpg would become:
*
* "TestFile0389.jpg".
*
*
* There is error correction to verify that:
*
* pageStart is not less than 0, or greater than the last page or pageEnd.
* pageEnd is not less than 0, less than pageStart or greater than the last page in the PDF document.
*
*
* Parameters:
*
* PDFFileName: String, name of PDF file to be read (does not verify that the file exists).
* format: String, default "jpg", format to save images as
* pageStart: System.Int32, default 0, page to start from (with starting page as 0).
* pageEnd: System.Int32, default -1, last page to print. -1 means "print to the last page."
*
* Please note that starting page is 0, so a file with 500 pages the pageEnd would be 499.
*
* Returns:
*
* 0 (failure)
* 1 (success)
*
* */
public int ConvertPDF2Image(string PDFFileName, String format = "jpg", System.Int32 pageStart = 0, System.Int32 pageEnd = -1)
{
try
{
// load the PDF document
System.Int32 index = pdfXpress.Documents.Add(PDFFileName);
// initialize the variables we need to write out the files
System.String outputFileBase = System.IO.Path.GetFileNameWithoutExtension(PDFFileName);
// Please note: If the DIB is being passed to an ImagXpress control
// then the ProduceDibSection property of the RenderOptions class should be set = False.
RenderOptions renderOpts = new RenderOptions();
renderOpts.ProduceDibSection = false;
renderOpts.ResolutionX = 300;
renderOpts.ResolutionY = 300;
//if they give us -1 as the parameter, do all the pages
if (pageEnd == -1)
{
pageEnd = pdfXpress.Documents[index].PageCount - 1;
}
/*
* Error checking
*
* These could be converted to exceptions in the future
* */
//starting page can't be less than 0, or greater than total pages
if (pageStart < 0 || pageStart > pdfXpress.Documents[index].PageCount - 1 || pageStart > pageEnd)
{
System.Console.WriteLine("Invalid starting page. Must be greater than 0 and less than total page count.");
return(0);
}
//ending page can not be less than the start page or more than the total number of pages
if (pageEnd < pageStart || pageEnd > pdfXpress.Documents[index].PageCount - 1)
{
System.Console.WriteLine("Invalid end page. Must be more than the starting page and not greater than the total number of pages.");
return(0);
}
//allowed image types
//convert everything to lower case first
System.Drawing.Imaging.ImageFormat imageType;
switch (format.ToLower())
{
case "bmp":
imageType = System.Drawing.Imaging.ImageFormat.Bmp;
break;
case "png":
imageType = System.Drawing.Imaging.ImageFormat.Png;
break;
case "gif":
imageType = System.Drawing.Imaging.ImageFormat.Gif;
break;
//if it's unrecognized, just do JPEG
case "jpg":
case "jpeg":
default:
imageType = System.Drawing.Imaging.ImageFormat.Jpeg;
break;
}
System.Int32 totalPages = pageEnd + 1 - pageStart;
//setting up the string format for leading zeros before any number less than 4 digits long
String numberFormat = "0000";
//for (pageIndex = 0; pageIndex < pdfXpress.Documents[index].PageCount; pageIndex++)
for (int pageIndex = 0; pageStart <= pageEnd; pageStart++)
{
using (Bitmap bp = pdfXpress.Documents[index].RenderPageToBitmap(pageStart, renderOpts))
{
bp.Save(outputFileBase + pageStart.ToString(numberFormat) + "." + format, imageType);
}
//show current progress
Progress(++pageIndex, totalPages);
//ending the progress line
}
System.Console.WriteLine();
//properly dispose of our PDF object
if (pdfXpress != null)
{
pdfXpress.Dispose();
pdfXpress = null;
}
}
catch (System.Exception ex)
{
System.Console.WriteLine(ex.Message);
}
//success - return 1
return(1);
}
