我正在尝试将文本插入具有固定宽度和高度的绝对位置的现有PDF中。当文本太大或字体大小不可见时。我试图按照here中所述解决此问题。
但是什么也没插入。有人知道我做错了什么还是想念吗?
这是我目前正在做的事情:
TextBlock tb = (TextBlock)g.Children[0];
ColumnText ct = new ColumnText(stamper.GetOverContent(fd.Page));
float llx=0, lly=0, urx=0, ury = 0;
float percentX = (float) ((Canvas.GetLeft(g) + tb.Padding.Left)/c.ActualWidth);
float percentY = (float)((Canvas.GetTop(g) - tb.Padding.Top)/c.ActualHeight);
float percentWidth = (float)(g.ActualWidth/c.ActualWidth);
float percentHeight = (float)(g.ActualHeight/c.ActualHeight);
llx = percentX * reader.GetPageSize(fd.Page).Width;
lly =(float) (reader.GetPageSize(fd.Page).Height - percentY * reader.GetPageSize(fd.Page).Height);
urx = llx + percentWidth * reader.GetPageSize(fd.Page).Width;
ury = lly - percentHeight * reader.GetPageSize(fd.Page).Height;
ct.SetSimpleColumn(new iTextSharp.text.Rectangle(llx, lly, urx, ury));
float fontsize = (float) tb.FontSize - 2;
Boolean fits;
iTextSharp.text.Paragraph p;
do {
p = new iTextSharp.text.Paragraph();
fontsize -= 0.1f;
p.Font.Size = fontsize;
p.Add(tb.Text);
ct.AddElement(p);
int status = ct.Go(true);
fits = !ColumnText.HasMoreText(status);
status = ct.Go(true);
} while (!fits && p.Font.Size > 2);
ct.Go();