protected override void DoRunInitialize(Ghostscript ghostscript)
{
// run the prolog if there is any
if (_prologAndSetup != null)
{
ghostscript.Run(_prologAndSetup);
}
}
protected override void DoRunInitialize(Ghostscript ghostscript)
{
// escape the path
var escapedFileName = new StringBuilder(FilePath);
for (var i = escapedFileName.Length - 1; i >= 0; i--)
{
switch (escapedFileName[i])
{
case '(':
case ')':
case '\\':
{
escapedFileName.Insert(i, '\\');
break;
}
}
}
// load the PDF
ghostscript.Run(string.Format(CultureInfo.InvariantCulture, "({0}) (r) file runpdfbegin process_trailer_attrs", escapedFileName));
}
protected override void DoConvert(ConvertFormat format, Action pageCompletedCallback, Func <bool> cancellationCallback)
{
// convert the file using Ghostscript
var outputFile = format.SupportsSingleFile ? Path.ChangeExtension(FilePath, format.FileExtension) : Path.Combine(Path.GetDirectoryName(FilePath), new StringBuilder(Path.GetFileNameWithoutExtension(FilePath)).Append("_%d.").Append(format.FileExtension).ToString());
using (var ghostscript = new Ghostscript(format.GetArguments(outputFile)))
{
if (cancellationCallback != null)
{
ghostscript.Poll += (s, e) => e.Cancel = cancellationCallback();
}
if (format == ConvertFormat.Pdf)
{
ghostscript.Run(".setpdfwrite");
}
DoRunInitialize(ghostscript);
for (var i = 0; i < PageCount; i++)
{
DoRunPage(ghostscript, i + 1);
pageCompletedCallback?.Invoke();
}
}
}
protected override void DoRunPage(Ghostscript ghostscript, int pageNumber)
{
// always run showpage
base.DoRunPage(ghostscript, pageNumber);
ghostscript.Run("showpage");
}
protected override void DoRunPage(Ghostscript ghostscript, int pageNumber)
{
// run the given page
ghostscript.Run(_pages.Values[pageNumber - 1]);
}
protected override void DoRunPage(Ghostscript ghostscript, int pageNumber)
{
// run the page
ghostscript.Run(string.Format(CultureInfo.InvariantCulture, "{0} pdfgetpage pdfshowpage", pageNumber));
}
