/// <summary>
/// Convert specified PDF file to Images (1 image per pdf page)
/// </summary>
/// <param name="file"></param>
/// <returns></returns>
IEnumerable <Image> ExtractImages(string file)
{
Ghostscript.NET.Rasterizer.GhostscriptRasterizer rasterizer = null;
Ghostscript.NET.GhostscriptVersionInfo vesion;
vesion = new Ghostscript.NET.GhostscriptVersionInfo(new Version(0, 0, 0),
PathToDll + @"\gsdll32.dll",
string.Empty,
Ghostscript.NET.GhostscriptLicense.GPL);
using (rasterizer = new Ghostscript.NET.Rasterizer.GhostscriptRasterizer())
{
try
{
rasterizer.Open(file, vesion, false);
return(GetImagesFromRasterizer(rasterizer));
}
catch
{
vesion = new Ghostscript.NET.GhostscriptVersionInfo(new Version(0, 0, 0),
PathToDll + @"\gsdll64.dll",
string.Empty,
Ghostscript.NET.GhostscriptLicense.GPL);
rasterizer.Open(file, vesion, false);
return(GetImagesFromRasterizer(rasterizer));
}
}
}
public static IList <byte[]> PDFToImage(MemoryStream ms, int ImgWidth, int ImgHeight)
{
string path = Path.GetDirectoryName(System.Web.Hosting.HostingEnvironment.ApplicationPhysicalPath);
Ghostscript.NET.Rasterizer.GhostscriptRasterizer rasterizer = null;
Ghostscript.NET.GhostscriptVersionInfo vesion = new Ghostscript.NET.GhostscriptVersionInfo(new Version(0, 0, 0), @"C:\\Program Files\\gs\\gs9.19\\bin\\gsdll64.dll", string.Empty, Ghostscript.NET.GhostscriptLicense.GPL);
IList <byte[]> images = new List <byte[]> ();
using (rasterizer = new Ghostscript.NET.Rasterizer.GhostscriptRasterizer())
{
rasterizer.Open(ms, vesion, false);
for (int i = 1; i <= rasterizer.PageCount; i++)
{
MemoryStream returnImage = new MemoryStream();
Image SrcImg = rasterizer.GetPage(200, 200, i);
//if (SrcImg.Width <= ImgWidth) ImgWidth = SrcImg.Width;
//int NewHeight = SrcImg.Height * ImgWidth / SrcImg.Width;
//if (NewHeight > ImgHeight)
//{
// // Resize with height instead
// ImgWidth = SrcImg.Width * ImgHeight / SrcImg.Height;
// NewHeight = ImgHeight;
//}
SrcImg.Save(returnImage, ImageFormat.Jpeg);
images.Add(returnImage.ToArray());
}
rasterizer.Close();
return(images);
}
}
public static Dictionary<int, string> PDFToImage(string file, string outputPath, int dpi)
{
string path = Path.GetDirectoryName(Assembly.GetEntryAssembly().Location);
Ghostscript.NET.Rasterizer.GhostscriptRasterizer rasterizer = null;
Ghostscript.NET.GhostscriptVersionInfo vesion = new Ghostscript.NET.GhostscriptVersionInfo(new System.Version(0, 0, 0), path + @"\gsdll64.dll", string.Empty, Ghostscript.NET.GhostscriptLicense.GPL);
Dictionary<int, string> dictionary = new Dictionary<int, string>();
using (rasterizer = new Ghostscript.NET.Rasterizer.GhostscriptRasterizer())
{
rasterizer.Open(file, vesion, false);
for (int i = 1; i <= rasterizer.PageCount; i++)
{
string pageFilePath = Path.Combine(outputPath, Path.GetFileNameWithoutExtension(@file).Replace(".pdf", "") + "-p" + i.ToString() + ".tiff");
using (System.Drawing.Image img = rasterizer.GetPage(dpi, dpi, i))
{
if (File.Exists(pageFilePath))
{
//img.Save(pageFilePath, System.Drawing.Imaging.ImageFormat.Tiff);
dictionary.Add(i, pageFilePath);
}
else
{
img.Save(pageFilePath, System.Drawing.Imaging.ImageFormat.Tiff);
dictionary.Add(i, pageFilePath);
}
}
}
rasterizer.Close();
rasterizer.Dispose();
}
return dictionary;
}
private void ConvertToJPEG(string inputFileName)
{
Ghostscript.NET.GhostscriptVersionInfo gv = Ghostscript.NET.GhostscriptVersionInfo.GetLastInstalledVersion(Ghostscript.NET.GhostscriptLicense.GPL | Ghostscript.NET.GhostscriptLicense.AFPL, Ghostscript.NET.GhostscriptLicense.GPL);
string outputPath = System.IO.Path.GetDirectoryName(inputFileName) + "\\" + System.IO.Path.GetFileNameWithoutExtension(inputFileName) + ".jpg";
System.IO.StreamReader r = new System.IO.StreamReader(inputFileName);
string pdfText = r.ReadToEnd();
System.Text.RegularExpressions.Regex rx1 = new System.Text.RegularExpressions.Regex(@"/Type\s*/Page[^s]");
System.Text.RegularExpressions.MatchCollection matches = rx1.Matches(pdfText);
//GhostscriptSharp.GhostscriptWrapper.GenerateOutput(singleFilePath, outputPath, gss);
using (GhostscriptProcessor gsp = new GhostscriptProcessor(gv, true))
{
gsp.Processing += new GhostscriptProcessorProcessingEventHandler(ghostscriptProcessing);
List <string> switches = new List <string>();
switches.Add("-empty");
switches.Add("-dSAFER");
switches.Add("-dBATCH");
switches.Add("-dNOPAUSE");
switches.Add("-dNOPROMPT");
switches.Add(@"-sFONTPATH=" + System.Environment.GetFolderPath(System.Environment.SpecialFolder.Fonts));
switches.Add("-dFirstPage=1");
switches.Add("-dLastPage=" + matches.Count.ToString());
switches.Add("-sDEVICE=jpeg");
switches.Add("-r96");
switches.Add("-dTextAlphaBits=4");
switches.Add("-dGraphicsAlphaBits=4");
switches.Add(@"-sOutputFile=" + outputPath);
switches.Add(@"-f");
switches.Add(inputFileName);
gsp.StartProcessing(switches.ToArray(), null);
}
}
public override Stream CreateThumbnail(Stream stream, Size size, int pageNumber)
{
const string ghostDllPath = @"C:\Development\DRS\src\Web\bin\gsdll64.dll"; //todo: banish the hardcode
var version = new Ghostscript.NET.GhostscriptVersionInfo(new Version(0, 0, 0), ghostDllPath, string.Empty, Ghostscript.NET.GhostscriptLicense.GPL);
using (var rasterizer = new GhostscriptRasterizer())
{
var path = System.IO.Path.Combine(System.IO.Path.GetTempPath(), Guid.NewGuid() + ".pdf");
try
{
using (var fs = File.Create(path))
{
//todo: why is ghostscript requiring i save the pdf to file first??
stream.CopyTo(fs);
stream.Dispose();
}
rasterizer.Open(path, version, true);
using (var thumbnail = rasterizer.GetPage(200, 200, pageNumber))
{
using (var thumbnailStream = new MemoryStream())
{
thumbnail.Save(thumbnailStream, ImageFormat.Png);
thumbnail.Dispose();
thumbnailStream.Position = 0;
return(ResizeAndCrop(thumbnailStream, size.Width, size.Height));
}
}
}
finally
{
File.Delete(path);
}
}
}
static public List <string> PDFToImages(string file, string outputDirectory, int dpi, bool uniqueFileNames)
{
//string path = Path.GetDirectoryName(Assembly.GetEntryAssembly().Location);
//path + @"\libs\gsdll32.dll"
Ghostscript.NET.Rasterizer.GhostscriptRasterizer rasterizer = null;
Ghostscript.NET.GhostscriptVersionInfo vesion = new Ghostscript.NET.GhostscriptVersionInfo(new Version(0, 0, 0), HostingEnvironment.MapPath("~/Libs/gsdll32.dll"), string.Empty, Ghostscript.NET.GhostscriptLicense.GPL);
List <string> outputFiles = new List <string>();
using (rasterizer = new Ghostscript.NET.Rasterizer.GhostscriptRasterizer())
{
rasterizer.Open(file, vesion, false);
for (int i = 1; i <= rasterizer.PageCount; i++)
{
string pageFilePath = Path.Combine(outputDirectory, (uniqueFileNames ? Path.GetRandomFileName() : "") + Path.GetFileNameWithoutExtension(file) + "-p" + i.ToString() + ".jpg");
outputFiles.Add(pageFilePath);
Image img = rasterizer.GetPage(dpi, dpi, i);
img.Save(pageFilePath, ImageFormat.Jpeg);
}
rasterizer.Close();
}
return(outputFiles);
}
public static List<string> PDFToImages(string file, string outputDirectory, int dpi, bool uniqueFileNames)
{
//string path = Path.GetDirectoryName(Assembly.GetEntryAssembly().Location);
//path + @"\libs\gsdll32.dll"
Ghostscript.NET.Rasterizer.GhostscriptRasterizer rasterizer = null;
Ghostscript.NET.GhostscriptVersionInfo vesion = new Ghostscript.NET.GhostscriptVersionInfo(new Version(0, 0, 0), HostingEnvironment.MapPath("~/Libs/gsdll32.dll") , string.Empty, Ghostscript.NET.GhostscriptLicense.GPL);
List<string> outputFiles = new List<string>();
using (rasterizer = new Ghostscript.NET.Rasterizer.GhostscriptRasterizer())
{
rasterizer.Open(file, vesion, false);
for (int i = 1; i <= rasterizer.PageCount; i++)
{
string pageFilePath = Path.Combine(outputDirectory, (uniqueFileNames ? Path.GetRandomFileName() : "") + Path.GetFileNameWithoutExtension(file) + "-p" + i.ToString() + ".jpg");
outputFiles.Add(pageFilePath);
Image img = rasterizer.GetPage(dpi, dpi, i);
img.Save(pageFilePath, ImageFormat.Jpeg);
}
rasterizer.Close();
}
return outputFiles;
}
private void btnCnvert_Click(object sender, EventArgs e)
{
if (string.IsNullOrEmpty(this.txtSingleFilePath.Text) && string.IsNullOrEmpty(this.txtMultFilePath.Text))
{
MessageBox.Show("You need to enter a file path!", "Error: No File Path");
return;
}
string singleFilePath = this.txtSingleFilePath.Text, multFileDir = this.txtMultFilePath.Text;
string pathsSelected = "Single File Path:\t\t" + singleFilePath + "\nMultiple File Directory:\t" + multFileDir;
//GhostscriptSharp.GhostscriptSettings gss = new GhostscriptSharp.GhostscriptSettings();
//gss.Device = GhostscriptSharp.Settings.GhostscriptDevices.jpeg;
//gss.Page.AllPages = true;
//gss.Resolution = new Size(500, 500);
//gss.Size = new GhostscriptSharp.Settings.GhostscriptPageSize() { Native = GhostscriptSharp.Settings.GhostscriptPageSizes.a4, Manual = new Size(500, 500) };
Ghostscript.NET.GhostscriptVersionInfo gv = Ghostscript.NET.GhostscriptVersionInfo.GetLastInstalledVersion(Ghostscript.NET.GhostscriptLicense.GPL | Ghostscript.NET.GhostscriptLicense.AFPL, Ghostscript.NET.GhostscriptLicense.GPL);
MessageBox.Show(pathsSelected);
if (!string.IsNullOrEmpty(singleFilePath))
{
if (!System.IO.File.Exists(singleFilePath))
{
MessageBox.Show("The file you entered does not exist. Verify that it does and try again.\nYour entry:\t" + singleFilePath, "Single File does not exist");
}
else if (!string.Equals(System.IO.Path.GetExtension(singleFilePath), ".pdf"))
{
MessageBox.Show("The file you entered is not a PDF. Verify that it is and try again.\nYour entry:\t" + singleFilePath, "Single File not PDF");
}
else
{
Label lblWaitMsg = new Label();
lblWaitMsg.Location = new Point(13, 13);
lblWaitMsg.Text = "Please wait while the Image Conversion loads..";
lblWaitMsg.AutoSize = true;
System.Windows.Forms.Form frmWait = new Form();
frmWait.Text = "Loading...";
frmWait.UseWaitCursor = true;
frmWait.Controls.Add(lblWaitMsg);
frmWait.AutoSize = true;
frmWait.Show();
ConvertToJPEG(singleFilePath);
frmWait.Close();
MessageBox.Show("Single File conversion sucess!");
}
}
if (!string.IsNullOrEmpty(multFileDir))
{
if (!System.IO.Directory.Exists(multFileDir))
{
MessageBox.Show("The Directory you entered does not exist. Verify that it does and try again.\nYour entry:\t" + multFileDir, "File Directory does not exist");
return;
}
else
{
System.IO.DirectoryInfo multiDirInfo = new System.IO.DirectoryInfo(multFileDir);
System.IO.FileInfo[] pdfFiles = multiDirInfo.GetFiles("*.pdf");
if (pdfFiles.Count() <= 0)
{
MessageBox.Show("The Directory you entered does not have any PDF files. Verify that it does and try again.\nYour entry:\t" + multFileDir, "File Directory conatins no PDFs");
}
else
{
Label lblWaitMsg = new Label();
lblWaitMsg.Location = new Point(13, 13);
lblWaitMsg.Text = "Please wait while the Image Conversion loads..";
lblWaitMsg.AutoSize = true;
System.Windows.Forms.Form frmWait = new Form();
frmWait.Text = "Loading...";
frmWait.UseWaitCursor = true;
frmWait.Controls.Add(lblWaitMsg);
frmWait.AutoSize = true;
frmWait.Show();
string multiFiles = "";
for (int counter = 0; counter < pdfFiles.Count(); counter++)
{
multiFiles = multiFiles + pdfFiles[counter].ToString() + "\n";
ConvertToJPEG(multiDirInfo.ToString() + "\\" + pdfFiles[counter].ToString());
}
frmWait.Close();
MessageBox.Show("Multiple File sucess!\n" + multiFiles);
}
}
}
return;
}
