public void ConvertPdfPageToImage(string outputFileName, int pageNumber)
{
if (pageNumber < 1 || pageNumber > this.PageCount)
{
throw new ArgumentException("Page number is out of bounds", "pageNumber");
}
using (GhostScriptAPI api = new GhostScriptAPI())
api.Execute(this.GetConversionArguments(this._pdfFileName, outputFileName, pageNumber, this.PdfPassword, this.Settings));
}
//Преобразование pdf в картинку
private void ConvertPdfPageToImage(string outputFileName, int pageNumber)
{
if (pageNumber < 1 || pageNumber > _pageCount)
{
throw new ArgumentException(Resources.ReadPageError, "pageNumber");
}
using (var api = new GhostScriptAPI())
{
api.Execute(GetConversionArguments(_pdfFileName, outputFileName, pageNumber,
null, _settings));
}
}
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);
}
public void ConvertPdfPageToImage(string outputFileName, int pageNumber)
{
if (pageNumber < 1 || pageNumber > this.PageCount)
throw new ArgumentException("Page number is out of bounds", "pageNumber");
using (GhostScriptAPI api = new GhostScriptAPI())
api.Execute(this.GetConversionArguments(this._pdfFileName, outputFileName, pageNumber, this.PdfPassword, this.Settings));
}
