/// <summary>
/// extract text in the pdf page
/// </summary>
void ExtractText()
{
_charCode = -1;
_pageMatrix = PdfPage.GetDefaultMatrix();
_pageHeight = PdfPage.GetPageHeight();
_textLines = new PdfLineOfText[((int)_pageHeight >> 2) + 8];
using (ElementReader page_reader = new ElementReader())
{
page_reader.Begin(PdfPage);
ProcessElements(page_reader);
}
PdfLineOfText preLt = null;
for (int i = 0; i < _textLines.Length; i++)
{
var lt = _textLines[i];
if (preLt != null && lt != null && preLt.FirstChar.Top - lt.FirstChar.Top < 3)
{
preLt.AddPdfChars(lt.Chars);
_textLines[i] = lt = null;
}
preLt = lt;
}
}
