How to Rotate Text in Table Cell in Aspose.PDF .NET

Question

I'm using Aspose.PDF .NET 10.4 (latest as of this writing). I'm using their DOM api (not generator as that's deprecated).

How do I rotate text in a table cell 90 degrees counterclockwise?

Here's what I tried but the rotation on a rectangle had no affect.

Table table =  new Table();
table.DefaultCellBorder = new BorderInfo(BorderSide.All, 1f, Color.Black);
table.DefaultCellPadding = new MarginInfo(5, 5, 5, 5);

var headerRow = table.Rows.Add();
headerRow.FixedRowHeight = 100;
headerRow.DefaultCellTextState.HorizontalAlignment = HorizontalAlignment.Center;

for (int hc = 0; hc < 20; hc++)
{
    var cell = headerRow.Cells.Add();
    cell.BackgroundColor = Color.Red;
    cell.DefaultCellTextState.ForegroundColor = Color.White;
    cell.DefaultCellTextState.FontStyle = FontStyles.Bold;

    var h = new TextFragment("header-" + hc);
    h.Rectangle.Rotate(270); //this does nothing
    cell.Paragraphs.Add(h);
}

for (int r = 0; r < 15; r++)
{
    var row = table.Rows.Add();
    for (int c = 0; c < 20; c++)
    {
        row.Cells.Add(r + "-" + c);
    }
}

Document doc = new Document();
Page page = doc.Pages.Add();
page.Paragraphs.Add(table);
doc.Save("c:\temp\table.pdf");

Answer 1

How about something like:

row.Cells[0].VerticalTextRotationAngle = VerticalTextRotationType.AntiClockWise;

Answer 2

Starting the recent release of Aspose.Pdf 17.5 it is possible to add rotated text fragments. Set angle value in degrees to TextState.Rotation property.

string myDir = @"D:\Temp\000\";
Aspose.Pdf.Table table = new Aspose.Pdf.Table();
table.DefaultCellBorder = new Aspose.Pdf.BorderInfo(Aspose.Pdf.BorderSide.All, 1f, Aspose.Pdf.Color.Black);
table.DefaultCellPadding = new Aspose.Pdf.MarginInfo(5, 5, 5, 5);

Row headerRow = table.Rows.Add();
headerRow.FixedRowHeight = 100;
headerRow.DefaultCellTextState.HorizontalAlignment = Aspose.Pdf.HorizontalAlignment.Center;

for (int hc = 0; hc < 4; hc++)
{
    Cell cell = headerRow.Cells.Add();
    cell.BackgroundColor = Aspose.Pdf.Color.Red;
    cell.DefaultCellTextState.ForegroundColor = Aspose.Pdf.Color.White;
    cell.DefaultCellTextState.FontStyle = FontStyles.Bold;

    TextFragment h = new TextFragment("header-" + hc);

    //Set rotation
    h.TextState.Rotation = 270;

    cell.Paragraphs.Add(h);
}

for (int r = 0; r < 15; r++)
{
    Row row = table.Rows.Add();
    for (int c = 0; c < 4; c++)
    {
        row.Cells.Add(r + "-" + c);
    }
}

Document doc = new Document();
Page page = doc.Pages.Add();
page.Paragraphs.Add(table);
doc.Save(myDir + "TextRotate_inCell_17_5.pdf");

My name is Nayyer and I am developer evangelist at Aspose.