private string GetSimpleHTMLTable(PdfTableCell table)
{
if (table == null)
{
return(null);
}
var sb = new StringBuilder();
sb.Append("<table>");
for (int i = 0; i < table.Rows; i++)
{
sb.Append("<tr>");
for (int j = 0; j < table.Cols; j++)
{
sb.Append("<td>");
if (table.Children.Count == 0)
{
sb.Append(table.Text);
}
else
{
var idx = i * table.Cols + j;
if (idx < table.Children.Count)
{
var cell = table.Children[idx];
if (cell.Children.Count == 0)
{
sb.Append(cell.Text);
}
else
{
sb.Append(GetSimpleHTMLTable(cell));
}
}
else
{
throw new Exception("bad format");
// the table is in bad format
// which the extraction should having a bug
}
}
sb.Append("</td>");
}
sb.Append("</tr>");
}
sb.Append("</table>");
return(sb.ToString());
}
private PdfTableCell MakeTable(List <Rectangle> rects, int level = 0)
{
if (rects == null || rects.Count == 0)
{
return(null);
}
var cell = new PdfTableCell(Rotation);
var x = rects[0].Left;
var y = rects[0].Top;
var maxX = rects.Max(r => r.Left);
var minY = rects.Min(r => r.Top);
var w = rects.Where(r => r.Top == y).Sum(r => r.Width);
var h = rects.Where(r => r.Left == x).Sum(r => r.Height);
cell.Rectangle = new Rectangle(x, y - h, x + w, y);
//cols
cell.Xs.Add(x);
while (true)
{
var rs = rects.Where(r => NearlyEqual(r.Left, x)).ToList();
if (rs.Count() == 0)
{
break;
}
x += rs.Max(r => r.Width);
// not arrive the border
if (x + Variance < cell.Rectangle.Right)
{
cell.Xs.Add(x);
}
}
//rows
cell.Ys.Add(y);
while (true)
{
var rs = rects.Where(r => NearlyEqual(r.Top, y)).ToList();
if (rs.Count() == 0)
{
break;
}
y = y - rs.Max(r => r.Height);
// not arrive the border
if (y - Variance > cell.Rectangle.Bottom)
{
cell.Ys.Add(y);
}
}
cell.Children = new List <PdfTableCell>();
if (rects.Count > 1 && level < MaxHierarchy)
//if (rects.Count > 1)
{
for (int j = 0; j < cell.RealRows; j++)
{
for (int i = 0; i < cell.RealCols; i++)
{
var ix = cell.Xs[i];
var iy = cell.Ys[j];
var iw = 0f;
var ih = 0f;
if (i == cell.RealCols - 1)
{
iw = cell.Rectangle.Right - ix;
}
else
{
iw = cell.Xs[i + 1] - ix;
}
if (j == cell.RealRows - 1)
{
ih = iy - cell.Rectangle.Bottom;
}
else
{
ih = iy - cell.Ys[j + 1];
}
//var innerRects = rects.Where(r => r.Left >= ix && r.Right <= ix + iw
// && r.Top <= iy && r.Bottom >= iy - ih)
// .ToList();
var innerRects = rects.Where(r =>
{
return
((r.Left > ix || NearlyEqual(r.Left, ix)) &&
(r.Right < ix + iw || NearlyEqual(r.Right, ix + iw)) &&
(r.Top < iy || NearlyEqual(r.Top, iy)) &&
(r.Bottom > iy - ih || NearlyEqual(r.Bottom, iy - ih)));
}).ToList();
if (innerRects.Count > 0)
{
var innerCell = MakeTable(innerRects, level + 1);
cell.Children.Add(innerCell);
}
}
}
}
else
{
cell.Text = GetResultantText(new RectangleSection(cell.Rectangle, Variance));
}
return(cell);
}
