/// <summary>
/// Returns Ink coverage for specified page range.
/// The result is ink coverage for the CMYK inks, separately for each single page (for RGB colors, it does a silent conversion to CMYK color space internally).
/// This function is supported only in Ghostscript v9.05 or newer.
/// </summary>
/// <param name="path">PDF file path.</param>
/// <param name="firstPage">Designated start page of the document. Pages of all documents in PDF collections are numbered sequentionally.</param>
/// <param name="lastPage">Designated end page of the document. Pages of all documents in PDF collections are numbered sequentionally.</param>
/// <param name="versionInfo">GhostscriptVersionInfo instance that tells which Ghostscript library to use.</param>
/// <returns>A dictionary of a page numbers with the ink coverage.</returns>
public static Dictionary<int, GhostscriptPageInkCoverage> GetInkCoverage(string path, int firstPage, int lastPage, GhostscriptVersionInfo versionInfo)
{
GhostscriptPipedOutput gsPipedOutput = new GhostscriptPipedOutput();
string outputPipeHandle = "%handle%" + int.Parse(gsPipedOutput.ClientHandle).ToString("X2");
List<string> switches = new List<string>();
switches.Add("-empty");
switches.Add("-q");
if (firstPage != 0 && lastPage != 0)
{
switches.Add("-dFirstPage=" + firstPage.ToString());
switches.Add("-dLastPage=" + lastPage.ToString());
}
switches.Add("-o" + outputPipeHandle);
switches.Add("-sDEVICE=inkcov");
switches.Add(path);
GhostscriptProcessor proc = new GhostscriptProcessor(versionInfo, false);
proc.StartProcessing(switches.ToArray(), null);
byte[] data = gsPipedOutput.Data;
gsPipedOutput.Dispose(); gsPipedOutput = null;
string output = Encoding.ASCII.GetString(data);
if (output.Length > 0)
{
Dictionary<int, GhostscriptPageInkCoverage> result = new Dictionary<int, GhostscriptPageInkCoverage>();
string[] outputLines = output.Split(new char[] { '\n' }, StringSplitOptions.RemoveEmptyEntries);
int pageNumber = firstPage == 0 ? 1 : firstPage;
foreach(string line in outputLines)
{
GhostscriptPageInkCoverage pic = new GhostscriptPageInkCoverage();
pic.Page = pageNumber;
pic.IsValid = false;
string[] lineParts = line.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
if (lineParts.Length == 6)
{
pic.C = Math.Round(float.Parse(lineParts[0], CultureInfo.InvariantCulture) * 100, 2);
pic.M = Math.Round(float.Parse(lineParts[1], CultureInfo.InvariantCulture) * 100, 2);
pic.Y = Math.Round(float.Parse(lineParts[2], CultureInfo.InvariantCulture) * 100, 2);
pic.K = Math.Round(float.Parse(lineParts[3], CultureInfo.InvariantCulture) * 100, 2);
if (lineParts[5] == "OK")
{
pic.IsValid = true;
}
}
result.Add(pageNumber, pic);
pageNumber++;
}
return result;
}
else
{
return null;
}
}
/// <summary>
/// Returns Ink coverage for specified page range.
/// The result is ink coverage for the CMYK inks, separately for each single page (for RGB colors, it does a silent conversion to CMYK color space internally).
/// This function is supported only in Ghostscript v9.05 or newer.
/// </summary>
/// <param name="path">PDF file path.</param>
/// <param name="firstPage">Designated start page of the document. Pages of all documents in PDF collections are numbered sequentionally.</param>
/// <param name="lastPage">Designated end page of the document. Pages of all documents in PDF collections are numbered sequentionally.</param>
/// <param name="versionInfo">GhostscriptVersionInfo instance that tells which Ghostscript library to use.</param>
/// <returns>A dictionary of a page numbers with the ink coverage.</returns>
public static Dictionary <int, GhostscriptPageInkCoverage> GetInkCoverage(string path, int firstPage, int lastPage, GhostscriptVersionInfo versionInfo)
{
GhostscriptPipedOutput gsPipedOutput = new GhostscriptPipedOutput();
string outputPipeHandle = "%handle%" + int.Parse(gsPipedOutput.ClientHandle).ToString("X2");
List <string> switches = new List <string>();
switches.Add("-empty");
switches.Add("-q");
if (firstPage != 0 && lastPage != 0)
{
switches.Add("-dFirstPage=" + firstPage.ToString());
switches.Add("-dLastPage=" + lastPage.ToString());
}
switches.Add("-o" + outputPipeHandle);
switches.Add("-sDEVICE=inkcov");
switches.Add(path);
GhostscriptProcessor proc = new GhostscriptProcessor(versionInfo, false);
proc.StartProcessing(switches.ToArray(), null);
byte[] data = gsPipedOutput.Data;
gsPipedOutput.Dispose(); gsPipedOutput = null;
string output = Encoding.ASCII.GetString(data);
if (output.Length > 0)
{
Dictionary <int, GhostscriptPageInkCoverage> result = new Dictionary <int, GhostscriptPageInkCoverage>();
string[] outputLines = output.Split(new char[] { '\n' }, StringSplitOptions.RemoveEmptyEntries);
int pageNumber = firstPage == 0 ? 1 : firstPage;
foreach (string line in outputLines)
{
GhostscriptPageInkCoverage pic = new GhostscriptPageInkCoverage();
pic.Page = pageNumber;
pic.IsValid = false;
string[] lineParts = line.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
if (lineParts.Length == 6)
{
pic.C = Math.Round(float.Parse(lineParts[0], CultureInfo.InvariantCulture) * 100, 4);
pic.M = Math.Round(float.Parse(lineParts[1], CultureInfo.InvariantCulture) * 100, 4);
pic.Y = Math.Round(float.Parse(lineParts[2], CultureInfo.InvariantCulture) * 100, 4);
pic.K = Math.Round(float.Parse(lineParts[3], CultureInfo.InvariantCulture) * 100, 4);
if (lineParts[5] == "OK")
{
pic.IsValid = true;
}
}
result.Add(pageNumber, pic);
pageNumber++;
}
return(result);
}
else
{
return(null);
}
}