Need to set line-height for System.Drawing.Font

Question

User-1134246250 posted

 Hey all,

I'm have a few issues with setting line-height when generating images. I pass a string with a few line breaks in, and the resulting image's line-height is way to high. I need it alot tighter. Below is the code:

  

double mth = Math.Ceiling(Convert.ToDouble(text.Length) / Convert.ToDouble(23));        
        double dblHeight = Math.Round(mth, 0);        
        //Initial height of image (height is a public var)
        height = (Convert.ToInt32(dblHeight) * 20);                
        Bitmap Bmp = new Bitmap(150, height);
        Graphics Graph = Graphics.FromImage(Bmp);

        for (int i = 0; i < dblHeight; i++)
        {
            if (text.Length > 23 * i)
            {
                //Splits string into different segments
                text = PageString(text, 23 );
                text = text.Replace("|", Environment.NewLine);
            }
        }

        Graph.Clear(Color.White);

        Graph.TextRenderingHint = TextRenderingHint.AntiAlias;
        Graph.SmoothingMode = SmoothingMode.AntiAlias;
        
        //Colour brush to use for generator
        Brush textBrush = new SolidBrush(Color.FromArgb(255,55,63));

        //font to write as
        PrivateFontCollection pfc = new PrivateFontCollection();
        string appDir = HttpContext.Current.Server.MapPath("/Fonts/insig.ttf");
        pfc.AddFontFile(appDir);        

        FontFamily ff = pfc.Families[0];

        Font fnt = new Font(ff, 14, GraphicsUnit.Pixel);                        

        if (ff.IsStyleAvailable(FontStyle.Regular)) fnt = new Font(ff, 14, FontStyle.Regular, GraphicsUnit.Pixel);

        //Point to start at
        Point pnt = new Point(0, 0);
                
        Graph.DrawString(text, fnt, textBrush, pnt);
        MemoryStream imgStream = new MemoryStream();

        try
        {
            Bmp.Save(imgStream, ImageFormat.Gif);
            Bmp.Dispose();
            Graph.Dispose();
        }
        catch
        {
            Bmp.Dispose();
            Graph.Dispose();
        } 
        return imgStream;