PDFObject Structure

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Pdf; 
using Leadtools.WinForms; 
using Leadtools.Drawing; 
 
 
public void PDFObjectExample() 
{ 
   string pdfFileName = Path.Combine(LEAD_VARS.ImagesDir, @"Leadtools.pdf"); 
   string pngFileName = Path.Combine(LEAD_VARS.ImagesDir, @"LEAD_png.png"); 
 
   // Create a PDF document for file at 200 DPI 
   using (PDFDocument document = new PDFDocument(pdfFileName)) 
   { 
      document.Resolution = 200; 
 
      // Parse the objects of the first page 
      document.ParseDocumentStructure(PDFParseDocumentStructureOptions.Fonts); 
      document.ParsePages(PDFParsePagesOptions.Fonts | PDFParsePagesOptions.Objects, 1, 1); 
 
      // Get the page 
      PDFDocumentPage page = document.Pages[0]; 
 
      // Get the image of the page so we can use it to get the source image objects 
      using (RasterImage pageImage = document.GetPageImage(null, page.PageNumber)) 
      { 
         // Create the bitmap to draw the objects to 
         using (Bitmap btmp = new Bitmap(page.WidthPixels, page.HeightPixels)) 
         { 
            btmp.SetResolution(document.Resolution, document.Resolution); 
            using (Graphics g = Graphics.FromImage(btmp)) 
            { 
               g.Clear(Color.White); 
 
               // Render the objects 
 
               // Text is line at a time 
               LeadRect textRect = LeadRect.Empty; 
               double textFontHeight = 0; 
               StringBuilder textLine = new StringBuilder(); 
 
               foreach (PDFObject obj in page.Objects) 
               { 
                  switch (obj.ObjectType) 
                  { 
                     case PDFObjectType.Image: 
                        RenderImage(g, pageImage, page, obj); 
                        break; 
 
                     case PDFObjectType.Text: 
                        // Add the text code and rects together 
                        textLine.Append(obj.Code); 
                        PDFRect rc = page.ConvertRect(PDFCoordinateType.Pdf, PDFCoordinateType.Pixel, obj.Bounds); 
                        LeadRect objRect = LeadRect.FromLTRB((int)rc.Left, (int)rc.Top, (int)rc.Right, (int)rc.Bottom); 
                        if (textRect.IsEmpty) 
                        { 
                           textRect = objRect; 
                        } 
                        else 
                        { 
                           textRect = LeadRect.Union(textRect, objRect); 
                        } 
 
                        textFontHeight = Math.Max(textFontHeight, obj.TextProperties.FontHeight); 
 
                        // If this is the last object in a line, render it 
                        if (obj.TextProperties.IsEndOfLine) 
                        { 
                           RenderText(g, document, page, textLine.ToString(), textRect, obj.TextProperties, textFontHeight); 
 
                           textLine = new StringBuilder(); 
                           textRect = LeadRect.Empty; 
                        } 
                        break; 
                  } 
               } 
            } 
 
            btmp.Save(pngFileName, System.Drawing.Imaging.ImageFormat.Png); 
         } 
      } 
   } 
} 
 
private static void RenderImage(Graphics g, RasterImage pageImage, PDFDocumentPage page, PDFObject obj) 
{ 
   LeadRect destRect = new LeadRect(0, 0, page.WidthPixels, page.HeightPixels); 
 
   // Get the object coordinates in pixels 
   PDFRect rc = page.ConvertRect(PDFCoordinateType.Pdf, PDFCoordinateType.Pixel, obj.Bounds); 
   LeadRect destClipRect = LeadRect.FromLTRB((int)rc.Left, (int)rc.Top, (int)rc.Right, (int)rc.Bottom); 
 
   // Draw from the page image to the destination graphics 
   RasterPaintProperties props = RasterPaintProperties.Default; 
   props.PaintEngine = RasterPaintEngine.GdiPlus; 
   RasterImagePainter.Paint( 
      pageImage, 
      g, 
      LeadRect.Empty, 
      LeadRect.Empty, 
      destRect, 
      destClipRect, 
      props); 
} 
 
private static void RenderText(Graphics g, PDFDocument document, PDFDocumentPage page, string text, LeadRect textRect, PDFTextProperties textProperties, double textFontHeight) 
{ 
   // Create the font 
 
   // Find it in the fonts collection 
   string faceName = null; 
 
   if (document.Fonts != null && textProperties.FontIndex < document.Fonts.Count) 
   { 
      PDFFont font = document.Fonts[textProperties.FontIndex]; 
      faceName = font.FaceName; 
   } 
 
   if (string.IsNullOrEmpty(faceName)) 
   { 
      // Could be an embedded font, use Arial 
      faceName = "Arial"; 
   } 
 
   using (Font f = new Font(faceName, (float)textFontHeight * 72 / g.DpiY)) 
   { 
      using (Brush brush = new SolidBrush(RasterColorConverter.ToColor(textProperties.Color))) 
      { 
         Rectangle rect = new Rectangle(textRect.X, textRect.Y, textRect.Width, textRect.Height); 
 
         using (StringFormat sf = new StringFormat()) 
         { 
            sf.Alignment = StringAlignment.Center; 
            sf.LineAlignment = StringAlignment.Center; 
            sf.FormatFlags |= StringFormatFlags.NoClip | StringFormatFlags.NoWrap; 
 
            g.DrawString(text, f, brush, rect, sf); 
         } 
      } 
   } 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS21\Resources\Images"; 
}