public Bitmap DrawContours(int page, string pathToPdf)
{
using (var reader = new PdfReader(pathToPdf))
{
var strategy = new TableExtractionStrategy();
var parser = new PdfReaderContentParser(reader);
parser.ProcessContent(page, strategy);
var size = reader.GetPageSize(page);
var bmp = new Bitmap((int)size.Width, (int)size.Height);
var h = bmp.Height;
using (var gp = Graphics.FromImage(bmp))
{
gp.Clear(Color.White);
strategy.GetAllInLines().ForEach(l =>
{
gp.DrawLine(Pens.Black, l.GetStartPoint()[0], h - l.GetStartPoint()[1]
, l.GetEndPoint()[0], h - l.GetEndPoint()[1]);
});
strategy.GetAllInPoints().ForEach(p =>
{
gp.DrawEllipse(Pens.Black, p.X - 2, h - p.Y - 2, 4, 4);
});
}
return(bmp);
}
}
/// <summary>
/// Exact table from page
/// </summary>
public IEnumerable <string> ExactTables(int page, string pathToPdf)
{
using (var reader = new PdfReader(pathToPdf))
{
var strategy = new TableExtractionStrategy();
var parser = new PdfReaderContentParser(reader);
parser.ProcessContent(page, strategy);
foreach (var table in strategy.GetTables())
{
yield return(GetSimpleHTMLTable(table));
}
}
}
public Bitmap PrintTableSkeletonInPage(int page, string pathToPdf, bool drawAxis = false)
{
using (var reader = new PdfReader(pathToPdf))
{
var strategy = new TableExtractionStrategy();
var parser = new PdfReaderContentParser(reader);
parser.ProcessContent(page, strategy);
var size = reader.GetPageSize(page);
var bmp = new Bitmap((int)size.Width, (int)size.Height);
using (var gp = Graphics.FromImage(bmp))
{
gp.Clear(Color.White);
//gp.ScaleTransform(1, -1);
//gp.TranslateTransform(0, -bmp.Height);
var h = bmp.Height;
var ft = new Font("arial", 8);
foreach (var line in strategy.Lines)
{
gp.DrawLine(Pens.Black, line.GetStartPoint()[0], h - line.GetStartPoint()[1], line.GetEndPoint()[0], h - line.GetEndPoint()[1]);
if (drawAxis)
{
gp.DrawString(string.Format("({0},{1})", line.GetStartPoint()[0], h - line.GetStartPoint()[1]), ft, Brushes.Black, new PointF(line.GetStartPoint()[0], h - line.GetStartPoint()[1]));
gp.DrawString(string.Format("({0},{1})", line.GetEndPoint()[0], h - line.GetEndPoint()[1]), ft, Brushes.Black, new PointF(line.GetEndPoint()[0], h - line.GetEndPoint()[1]));
}
}
foreach (var rect in strategy.Rects)
{
gp.DrawRectangle(Pens.Black, rect.Left, h - rect.Top - rect.Height, rect.Width, rect.Height);
if (drawAxis)
{
gp.DrawString(string.Format("({0},{1})", rect.Left, h - rect.Top - rect.Height), ft, Brushes.Red, new PointF(rect.Left, h - rect.Top - rect.Height));
gp.DrawString(string.Format("w:{0}", rect.Width), ft, Brushes.Red, new PointF(rect.Left + rect.Width / 2, h - rect.Top - rect.Height));
gp.DrawString(string.Format("h:{0}", rect.Height), ft, Brushes.Red, new PointF(rect.Left, h - rect.Top - rect.Height / 2));
}
}
}
return(bmp);
}
}
