public string ExtrairTextoConcatenado(byte[] arquivoBytes, IEnumerable <int> paginas)
{
// validações
Validations.ArquivoValido(arquivoBytes);
using (MemoryStream readingStream = new MemoryStream(arquivoBytes))
using (PdfReader pdfReader = new PdfReader(readingStream))
using (PdfDocument pdfDocument = new PdfDocument(pdfReader))
{
if (paginas == null || paginas.Count() == 0)
{
paginas = new List <int>(Enumerable.Range(1, pdfDocument.GetNumberOfPages()));
}
string texto = "";
foreach (var pagina in paginas)
{
texto = texto + PdfTextExtractor.GetTextFromPage(
pdfDocument.GetPage(pagina),
new SimpleTextExtractionStrategy()
);
}
return(texto);
}
}
public List <KeyValuePair <int, string> > ExtrairTextoPorPaginas(byte[] arquivoBytes, IEnumerable <int> paginas)
{
// validações
Validations.ArquivoValido(arquivoBytes);
using (MemoryStream readingStream = new MemoryStream(arquivoBytes))
using (PdfReader pdfReader = new PdfReader(readingStream))
using (PdfDocument pdfDocument = new PdfDocument(pdfReader))
{
if (paginas == null || paginas.Count() == 0)
{
paginas = new List <int>(Enumerable.Range(1, pdfDocument.GetNumberOfPages()));
}
var result = new List <KeyValuePair <int, string> >();
foreach (var pagina in paginas)
{
string pageText = PdfTextExtractor.GetTextFromPage(
pdfDocument.GetPage(pagina),
new SimpleTextExtractionStrategy()
);
result.Add(new KeyValuePair <int, string>(pagina, pageText));
}
return(result);
}
}
public PdfInfo PdfInfo(byte[] file)
{
Validations.ArquivoValido(file);
using (MemoryStream memoryStream = new MemoryStream(file))
{
var pdfInfo = PdfInfo(memoryStream);
memoryStream.Close();
return(pdfInfo);
}
}
public byte[] AdicionarMarcaDagua(
byte[] arquivo, string[] texto, int tamanhoFonte = 40, string corHexa = "ff0000",
int anguloTextoGraus = 30, float opacidade = 0.1f, int repeticoes = 3
)
{
// validações
Validations.ArquivoValido(arquivo);
using (MemoryStream readingStream = new MemoryStream(arquivo))
using (PdfReader pdfReader = new PdfReader(readingStream))
using (MemoryStream writingStream = new MemoryStream())
using (PdfWriter pdfWriter = new PdfWriter(writingStream))
using (PdfDocument pdfDocument = new PdfDocument(pdfReader, pdfWriter))
using (Document document = new Document(pdfDocument))
{
Rectangle pageSize;
PdfCanvas canvas;
int n = pdfDocument.GetNumberOfPages();
float angleRads = (anguloTextoGraus * (float)Math.PI) / 180;
for (int pageCounter = 1; pageCounter <= n; pageCounter++)
{
PdfPage page = pdfDocument.GetPage(pageCounter);
pageSize = page.GetPageSize();
canvas = new PdfCanvas(page);
int k = 1;
for (int repetitionCounter = 0; repetitionCounter < repeticoes; repetitionCounter++)
{
for (int textCounter = 0; textCounter < texto.Length; textCounter++)
{
// Desenhar Marca D'dágua
Paragraph p = new Paragraph(texto[textCounter])
.SetFontSize(tamanhoFonte)
.SetFontColor(Hexa2Rgb(corHexa));
canvas.SaveState();
PdfExtGState gs1 = new PdfExtGState().SetFillOpacity(opacidade);
canvas.SetExtGState(gs1);
document.ShowTextAligned(
p,
pageSize.GetWidth() / 2,
(pageSize.GetHeight() / ((texto.Length * repeticoes) + 1)) * k++,
pdfDocument.GetPageNumber(page),
TextAlignment.CENTER, VerticalAlignment.MIDDLE,
angleRads
);
}
}
canvas.RestoreState();
}
pdfDocument.Close();
return(writingStream.ToArray());
}
}