public static string[] GetFormattedArguments(IDictionary <GhostScriptCommand, object> args)
{
List <string> translatedArgs;
translatedArgs = new List <string>();
foreach (KeyValuePair <GhostScriptCommand, object> pair in args)
{
translatedArgs.Add(GhostScriptAPI.GetFormattedArgument(pair.Key, pair.Value));
}
return(translatedArgs.ToArray());
}
public List <string> ConvertPdfPageToImage(string pdfFilePath, string pdfPassword, string outputdir)
{
if (_pdf2ImgCache.ContainsKey(pdfFilePath))
{
return(_pdf2ImgCache[pdfFilePath]);
}
List <string> imgPathList = new List <string>();
try
{
string exedir = System.IO.Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
string businessdir = System.IO.Path.Combine(exedir, "Business");
string path = System.IO.Path.Combine(businessdir, outputdir);
if (!Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
int pageCount = GetPdfPageCount(pdfFilePath);
for (int pageNum = 1; pageNum <= pageCount; pageNum++)
{
GhostScriptAPI api = new GhostScriptAPI();
string _imgFileFullPath = string.Format(@"{0}\{1}{2}", path, Guid.NewGuid(), _settings.Extension);
api.Execute(GetConversionArguments(pdfFilePath, _imgFileFullPath, pageNum, pdfPassword, _settings));
imgPathList.Add(_imgFileFullPath);
api.Dispose();
}
}
catch (Exception ex)
{
return(null);
}
_pdf2ImgCache.Add(pdfFilePath, imgPathList);
return(imgPathList);
}
public static string GetFormattedArgument(GhostScriptCommand command, object value)
{
string commandName;
string operatorChar;
string commandValue;
if (value != null)
{
if (value is Enum)
{
value = (int)value;
}
else if (value is bool)
{
value = (bool)value ? "true" : "false";
}
}
commandName = GhostScriptAPI.GetCommandName(command);
operatorChar = value == null || string.IsNullOrEmpty(commandName) || command == GhostScriptCommand.Resolution ? string.Empty : "=";
commandValue = value == null ? string.Empty : value.ToString();
return(commandName + operatorChar + commandValue);
}
public int Execute(IDictionary <GhostScriptCommand, object> args)
{
return(this.Execute(GhostScriptAPI.GetFormattedArguments(args)));
}
protected virtual IDictionary <GhostScriptCommand, object> GetConversionArguments(
string pdfFileName, string outputImageFileName, int pageNum, string password, PdfToImageConfig settings)
{
Dictionary <GhostScriptCommand, object> arguments;
arguments = new Dictionary <GhostScriptCommand, object>();
arguments.Add(GhostScriptCommand.Silent, null);
arguments.Add(GhostScriptCommand.Safer, null);
arguments.Add(GhostScriptCommand.Batch, null);
arguments.Add(GhostScriptCommand.NoPause, null);
arguments.Add(GhostScriptCommand.Device, GhostScriptAPI.GetDeviceName(settings.ImageFormat));
arguments.Add(GhostScriptCommand.OutputFile, outputImageFileName);
arguments.Add(GhostScriptCommand.FirstPage, pageNum);
arguments.Add(GhostScriptCommand.LastPage, pageNum);
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);
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;
}
if (!string.IsNullOrEmpty(password))
{
arguments.Add(GhostScriptCommand.PDFPassword, password);
}
arguments.Add(GhostScriptCommand.InputFile, pdfFileName);
return(arguments);
}
