public Pdf2Image(string pdfFileName, Pdf2ImageSettings settings)
: this(pdfFileName)
{
if (settings == null)
throw new ArgumentNullException("setting");
this.Settings = settings;
}
public Pdf2Image(string pdfFileName, Pdf2ImageSettings settings)
: this(pdfFileName)
{
if (settings == null)
{
throw new ArgumentNullException("setting");
}
this.Settings = settings;
}
private void Button_Click_1(object sender, RoutedEventArgs e)
{
//txtScanResult.Text = ReadImage(txtFilePath.Text);
Pdf2ImageSettings settings;
settings = new Pdf2ImageSettings();
settings.AntiAliasMode = AntiAliasMode.High;
settings.Dpi = 300;
settings.GridFitMode = GridFitMode.Topological;
settings.ImageFormat = ImageFormat.Png24;
settings.TrimMode = PdfTrimMode.CropBox;
Bitmap firstPage = new Pdf2Image(txtFilePath.Text).GetImage(1);
string outputfilePath = System.IO.Path.Combine(@"D:\temp\", System.IO.Path.GetFileNameWithoutExtension(txtFilePath.Text));
firstPage.Save(outputfilePath, System.Drawing.Imaging.ImageFormat.Jpeg);
}
private string GetPage(string projectName, string pdfPath, int pageNumber, out int pageCount)
{
byte[] imageBytes = null;
string response = null;
string prefix = "data:image/png;base64,";
Pdf2ImageSettings settings;
settings = new Pdf2ImageSettings();
settings.AntiAliasMode = AntiAliasMode.High;
settings.Dpi = 300;
settings.GridFitMode = GridFitMode.Topological;
settings.ImageFormat = ImageFormat.Png24;
settings.TrimMode = PdfTrimMode.CropBox;
if (File.Exists(pdfPath))
{
var converter = new Pdf2Image(pdfPath);
Bitmap pageImage = converter.GetImage(pageNumber);
pageCount = converter.PageCount;
var jpegFilePath = Path.Combine(System.Web.Hosting.HostingEnvironment.MapPath("~/App_Data/pages"), projectName + pageNumber + ".jpg");
pageImage.Save(jpegFilePath, System.Drawing.Imaging.ImageFormat.Jpeg);
ImageConverter imgConverter = new ImageConverter();
imageBytes = (byte[])imgConverter.ConvertTo(pageImage, typeof(byte[]));
response = Convert.ToBase64String(imageBytes);
return prefix + response;
}
// if the file path is invalid set the page count to zero
pageCount = 0;
return "";
}
protected virtual IDictionary <GhostScriptCommand, object> GetConversionArguments(string pdfFileName, string outputImageFileName, int pageNumber, string password, Pdf2ImageSettings settings)
{
Dictionary <GhostScriptCommand, object> arguments;
arguments = new Dictionary <GhostScriptCommand, object>();
// basic GhostScript setup
arguments.Add(GhostScriptCommand.Silent, null);
arguments.Add(GhostScriptCommand.Safer, null);
arguments.Add(GhostScriptCommand.Batch, null);
arguments.Add(GhostScriptCommand.NoPause, null);
// specify the output
arguments.Add(GhostScriptCommand.Device, GhostScriptAPI.GetDeviceName(settings.ImageFormat));
arguments.Add(GhostScriptCommand.OutputFile, outputImageFileName);
// page numbers
arguments.Add(GhostScriptCommand.FirstPage, pageNumber);
arguments.Add(GhostScriptCommand.LastPage, pageNumber);
// graphics options
arguments.Add(GhostScriptCommand.UseCIEColor, null);
if (settings.AntiAliasMode != AntiAliasMode.None)
{
arguments.Add(GhostScriptCommand.TextAlphaBits, settings.AntiAliasMode);
arguments.Add(GhostScriptCommand.GraphicsAlphaBits, settings.AntiAliasMode);
}
arguments.Add(GhostScriptCommand.GridToFitTT, settings.GridFitMode);
// image size
if (settings.TrimMode != PdfTrimMode.PaperSize)
{
arguments.Add(GhostScriptCommand.Resolution, settings.Dpi.ToString());
}
switch (settings.TrimMode)
{
case PdfTrimMode.PaperSize:
if (settings.PaperSize != PaperSize.Default)
{
arguments.Add(GhostScriptCommand.FixedMedia, true);
arguments.Add(GhostScriptCommand.PaperSize, settings.PaperSize);
}
break;
case PdfTrimMode.TrimBox:
arguments.Add(GhostScriptCommand.UseTrimBox, true);
break;
case PdfTrimMode.CropBox:
arguments.Add(GhostScriptCommand.UseCropBox, true);
break;
}
// pdf password
if (!string.IsNullOrEmpty(password))
{
arguments.Add(GhostScriptCommand.PDFPassword, password);
}
// pdf filename
arguments.Add(GhostScriptCommand.InputFile, pdfFileName);
return(arguments);
}
protected virtual IDictionary<GhostScriptCommand, object> GetConversionArguments(string pdfFileName, string outputImageFileName, int pageNumber, string password, Pdf2ImageSettings settings)
{
Dictionary<GhostScriptCommand, object> arguments;
arguments = new Dictionary<GhostScriptCommand, object>();
// basic GhostScript setup
arguments.Add(GhostScriptCommand.Silent, null);
arguments.Add(GhostScriptCommand.Safer, null);
arguments.Add(GhostScriptCommand.Batch, null);
arguments.Add(GhostScriptCommand.NoPause, null);
// specify the output
arguments.Add(GhostScriptCommand.Device, GhostScriptAPI.GetDeviceName(settings.ImageFormat));
arguments.Add(GhostScriptCommand.OutputFile, outputImageFileName);
// page numbers
arguments.Add(GhostScriptCommand.FirstPage, pageNumber);
arguments.Add(GhostScriptCommand.LastPage, pageNumber);
// graphics options
arguments.Add(GhostScriptCommand.UseCIEColor, null);
if (settings.AntiAliasMode != AntiAliasMode.None)
{
arguments.Add(GhostScriptCommand.TextAlphaBits, settings.AntiAliasMode);
arguments.Add(GhostScriptCommand.GraphicsAlphaBits, settings.AntiAliasMode);
}
arguments.Add(GhostScriptCommand.GridToFitTT, settings.GridFitMode);
// image size
if (settings.TrimMode != PdfTrimMode.PaperSize)
arguments.Add(GhostScriptCommand.Resolution, settings.Dpi.ToString());
switch (settings.TrimMode)
{
case PdfTrimMode.PaperSize:
if (settings.PaperSize != PaperSize.Default)
{
arguments.Add(GhostScriptCommand.FixedMedia, true);
arguments.Add(GhostScriptCommand.PaperSize, settings.PaperSize);
}
break;
case PdfTrimMode.TrimBox:
arguments.Add(GhostScriptCommand.UseTrimBox, true);
break;
case PdfTrimMode.CropBox:
arguments.Add(GhostScriptCommand.UseCropBox, true);
break;
}
// pdf password
if (!string.IsNullOrEmpty(password))
arguments.Add(GhostScriptCommand.PDFPassword, password);
// pdf filename
arguments.Add(GhostScriptCommand.InputFile, pdfFileName);
return arguments;
}