public object SignDocument(
string appDataPath,
string documentGuid,
string documentId,
string name,
SignatureField[] fields,
Func <string, string> urlCreator)
{
if (fields == null || fields.Length == 0)
{
return(null);
}
SignatureField field = fields[0];
string data = field.Data;
string signatureText = String.Empty;
SignatureField.Location location = field.Locations[0];
const double scaleForSizes = 2.083;
int signatureWidth = (int)(location.LocationWidth / scaleForSizes);
int signatureHeight = (int)(location.LocationHeight / scaleForSizes);
byte[] imageBytes = null;
const string dataUrlPrefix = "data:image/png;base64,";
if (data.StartsWith(dataUrlPrefix))
{
string base64Data = data.Substring(dataUrlPrefix.Length);
imageBytes = Convert.FromBase64String(base64Data);
}
else
{
Regex removeUnclosedLinkTagRegex = new Regex(@"<link[^>]*>");
string svgData = removeUnclosedLinkTagRegex.Replace(data, String.Empty);
IEnumerable <XElement> textElements;
imageBytes = _svgRenderer.DrawSvgImage(svgData, signatureWidth, signatureHeight);
XDocument root = XDocument.Parse(svgData);
textElements = root.Descendants("{http://www.w3.org/2000/svg}text");
if (textElements.Count() > 0)
{
foreach (XElement textElement in textElements)
{
signatureText += textElement.Value;
}
}
}
// request structure:
//{ "documentId":"","name":"a b","waterMarkText":"","waterMarkImage":"","fields":[{"fieldType":1,"data":"<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"100%\" height=\"100%\" viewbox=\"0 0 233 82\" preserveaspectratio=\"none\"><text font-family=\"Tangerine\" font-size=\"60px\" fill=\"#0036D9\" y=\"50%\" x=\"50%\" dy=\"0.3em\" text-anchor=\"middle\">Anonymous</text><defs><link href=\"http://fonts.googleapis.com/css?family=Tangerine\" type=\"text/css\" rel=\"stylesheet\" xmlns=\"http://www.w3.org/1999/xhtml\"><style type=\"text/css\">@import url(http://fonts.googleapis.com/css?family=Tangerine)</style></defs></svg>","locations":[{"page":1,"locationX":0.4,"locationY":0.3,"locationWidth":150,"locationHeight":50,"fontName":null,"fontSize":null,"fontColor":null,"fontBold":null,"fontItalic":null,"fontUnderline":null,"alignment":0,"id":"ff4dd6a4a44ecd682a4be3a19a801e6f"}],"id":"1c9b463ac3c1e9ebaf51e34ea352de3a"}],"documentGuid":"candy.pdf","recipientGuid":"71d1f3ef88a5d7fe32f4c46588a69887","email":"*****@*****.**"}
string path = documentGuid;
string fullPathToDocument = Path.Combine(appDataPath, path);
string fileNameExtension = Path.GetExtension(path).TrimStart('.');
fileNameExtension = fileNameExtension.ToLower();
int pageWidth = 0, pageHeight = 0;
int signatureColumnNum = 0, signatureRowNum = 0;
int pageNumber = location.Page;
PositionInCellsDocument positionInCellsDocument = new PositionInCellsDocument();
System.Drawing.Size size = GetPageSize(fullPathToDocument, location.Page,
location.LocationX, location.LocationY,
positionInCellsDocument);
signatureColumnNum = positionInCellsDocument.ColumnNumber;
signatureRowNum = positionInCellsDocument.RowNumber;
pageWidth = size.Width;
pageHeight = size.Height;
string outputFilePath;
MemoryStream imageStream = null;
try
{
if (imageBytes == null)
{
outputFilePath = SignDocumentWithText(appDataPath,
documentGuid,
signatureText,
pageNumber,
(int)(pageWidth * location.LocationX),
(int)(pageHeight * location.LocationY),
signatureWidth,
signatureHeight,
signatureColumnNum, signatureRowNum);
}
else
{
imageStream = new MemoryStream(imageBytes);
outputFilePath = SignDocumentWithImage(appDataPath,
documentGuid,
imageStream,
pageNumber,
(int)(pageWidth * location.LocationX),
(int)(pageHeight * location.LocationY),
signatureWidth,
signatureHeight,
signatureColumnNum, signatureRowNum);
}
}
finally
{
if (imageStream != null)
{
imageStream.Dispose();
}
}
string relativeOutputFileName = Path.Combine("Output", Path.GetFileName(outputFilePath));
var resultData = new
{
status = "Ok",
result = new
{
document = new
{
guid = relativeOutputFileName,
name = relativeOutputFileName,
signedName = relativeOutputFileName,
signedDocumentUrl = urlCreator(relativeOutputFileName),
signedFromAll = true,
recipients = new[]
{
new
{
id = 0,
guid = "71d1f3ef88a5d7fe32f4c46588a69887",
documentGuid = "cea6784811dc54d7feac5fcb5ef8817a",
firstName = "dummy",
lastName = "dummy",
email = "*****@*****.**",
signed = true
}
}
}
}
};
return(resultData);
}