private void FillPdfForm(string originalPdfFile, string destPdfFile, PdfFormMap formMap, Dictionary <string, dynamic> dbValues)
{
using PdfReader reader = new PdfReader(originalPdfFile);
using PdfWriter writer = new PdfWriter(destPdfFile);
reader.SetUnethicalReading(true);
using PdfDocument pdf = new PdfDocument(reader, writer, new StampingProperties().UseAppendMode());
var form = PdfAcroForm.GetAcroForm(pdf, false);
foreach (var fieldMap in formMap.FieldMaps)
{
PdfFormField formField = form.GetField(fieldMap.Name);
if (formField == null || formField.IsReadOnly())
{
continue;
}
//string[] states = formField.GetAppearanceStates();
//string statesStr = string.Empty;
//foreach (var state in states)
//{
// statesStr += $"{state} | ";
//}
//if (!string.IsNullOrEmpty(statesStr))
// list.Add($"[{formField.GetType().Name}] {field} - {statesStr}");
if (!MatchCondition(fieldMap.Condition, dbValues))
{
continue;
}
string value = (string)ResolveDynamicValue(fieldMap.Value, dbValues);
if (!string.IsNullOrEmpty(value))
{
if (formField is PdfButtonFormField buttonFormField)
{
formField = buttonFormField.SetCheckType(PdfFormField.TYPE_CHECK);
if (buttonFormField.IsRadio())
{
formField = buttonFormField.SetRadio(true);
}
}
formField.SetValue(value);
}
}
}
public ActionResult <PdfScanResult> Get(string pdfCode)
{
if (string.IsNullOrEmpty(pdfCode))
{
return(BadRequest());
}
var templateFilePath = $"{pdfCode}.pdf";
if (!string.IsNullOrEmpty(_pdfFilesOptions.TemplatePath))
{
templateFilePath = $"{_pdfFilesOptions.TemplatePath}{Path.DirectorySeparatorChar}{templateFilePath}";
}
if (!System.IO.File.Exists(templateFilePath))
{
return(NotFound());
}
using PdfReader reader = new PdfReader(templateFilePath);
reader.SetUnethicalReading(true);
using PdfDocument pdf = new PdfDocument(reader);
var scanPages = new PdfScanPage[pdf.GetNumberOfPages()];
var result = new PdfScanResult {
PdfCode = pdfCode,
Pages = new List <PdfScanPage>(pdf.GetNumberOfPages())
};
//PdfPage pdfPage = pdf.GetPage(1);
//PdfFormXObject pdfPageCopy = pdfPage.CopyAsFormXObject(pdf);
//Image pageImage = new Image(pdfPageCopy);
//ImageData b = new ImageData();
//PdfImageXObject a = new PdfImageXObject()
var form = PdfAcroForm.GetAcroForm(pdf, false);
var fields = form.GetFormFields();
foreach (string field in fields.Keys)
{
PdfFormField formField = form.GetField(field);
if (formField.IsReadOnly())
{
continue;
}
var pdfValue = formField.GetValue();
if (formField.GetWidgets() == null)
{
continue;
}
if (formField.GetWidgets().Count <= 0)
{
continue;
}
bool isButton = (formField is PdfButtonFormField);
bool isText = (formField is PdfTextFormField);
if (!isText && !isButton)
{
continue;
}
var page = formField.GetWidgets().First().GetPage();
var pageNumber = pdf.GetPageNumber(page);
PdfScanPage scanPage = scanPages[pageNumber - 1];
if (scanPage == null)
{
scanPage = new PdfScanPage {
Number = pageNumber,
FormFields = new List <PdfScanFormField>()
};
}
double minLowerLeftX = double.MaxValue;
double minLowerLeftY = double.MaxValue;
double maxUpperRightX = 0;
double maxUpperRightY = 0;
foreach (var widget in formField.GetWidgets())
{
var rectangle = widget.GetRectangle();
if (rectangle == null)
{
continue;
}
if (rectangle.Size() < 4)
{
continue;
}
// API links explanations:
//https://itextpdf.com/en/resources/faq/technical-support/itext-7/how-find-absolute-position-and-dimension-field
//https://itextpdf.com/en/resources/faq/technical-support/itext-7/how-show-image-text-field-position
var lowerLeftX = rectangle.GetAsNumber(0).GetValue(); //lower left position x
var lowerLeftY = rectangle.GetAsNumber(1).GetValue(); //lower left position y
var upperRightX = rectangle.GetAsNumber(2).GetValue(); //upper right position x
var upperRightY = rectangle.GetAsNumber(3).GetValue(); //upper right position y
if (minLowerLeftX > lowerLeftX)
{
minLowerLeftX = lowerLeftX;
}
if (minLowerLeftY > lowerLeftY)
{
minLowerLeftY = lowerLeftY;
}
if (maxUpperRightX < upperRightX)
{
maxUpperRightX = upperRightX;
}
if (maxUpperRightY < upperRightY)
{
maxUpperRightY = upperRightY;
}
}
var scanFormField = new PdfScanFormField
{
Name = field,
Position = new Position
{
X = minLowerLeftX,
Y = minLowerLeftY
},
Size = new Size
{
Width = maxUpperRightX - minLowerLeftX,
Height = maxUpperRightY - minLowerLeftY
}
};
scanPage.FormFields.Add(scanFormField);
scanPages[pageNumber - 1] = scanPage;
}
result.Pages = scanPages.Where(sp => sp != null).ToList();
return(Ok(result));
}