private void _searchTimer_Tick(object sender, EventArgs e)
{
if (_searchPageIndex < 0)
{
return;
}
var doc = PdfViewer.Document;
int cnt = doc.Pages.Count;
if (_searchPageIndex >= cnt)
{
_searchTimer.Stop();
return;
}
IntPtr page = Pdfium.FPDF_LoadPage(doc.Handle, _searchPageIndex);
if (page == IntPtr.Zero)
{
_searchTimer.Stop();
return;
}
IntPtr text = Pdfium.FPDFText_LoadPage(page);
if (text == IntPtr.Zero)
{
_searchTimer.Stop();
return;
}
var sh = Pdfium.FPDFText_FindStart(text, _searchText, _searchFlags, 0);
if (sh == IntPtr.Zero)
{
_searchTimer.Stop();
return;
}
while (Pdfium.FPDFText_FindNext(sh))
{
int idx = Pdfium.FPDFText_GetSchResultIndex(sh);
int len = Pdfium.FPDFText_GetSchCount(sh);
var ft = new PdfSearch.FoundText()
{
CharIndex = idx, CharsCount = len, PageIndex = _searchPageIndex
};
_foundText.Add(ft);
_forHighlight.Add(ft);
}
Pdfium.FPDFText_FindClose(sh);
Pdfium.FPDFText_ClosePage(text);
Pdfium.FPDF_ClosePage(page);
UpdateResults();
_searchPageIndex++;
}