public int FontIndex { get; set; }
The 0-based index of font used by this text item into the font array. The default value is 0.
To read objects (including text items) from a PDF file, use the PDFDocument.ParsePages method. After this method returns and depending on the value of PDFParsePagesOptions parameter passed to the method, the PDFDocumentPage.Objects, PDFDocumentPage.Annotations, PDFDocumentPage.FormFields, PDFDocumentPage.Signatures and PDFDocumentPage.Hyperlinks collections will be populated with the items of the PDF page. The FontIndex property will contain the index in the PDFDocument.Fonts collection that corresponds to the font of this item.
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 DPIusing (PDFDocument document = new PDFDocument(pdfFileName)){document.Resolution = 200;// Parse the objects of the first pagedocument.ParseDocumentStructure(PDFParseDocumentStructureOptions.Fonts);document.ParsePages(PDFParsePagesOptions.Fonts | PDFParsePagesOptions.Objects, 1, 1);// Get the pagePDFDocumentPage page = document.Pages[0];// Get the image of the page so we can use it to get the source image objectsusing (RasterImage pageImage = document.GetPageImage(null, page.PageNumber)){// Create the bitmap to draw the objects tousing (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 timeLeadRect 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 togethertextLine.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 itif (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 pixelsPDFRect 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 graphicsRasterPaintProperties 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 collectionstring 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 ArialfaceName = "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:\LEADTOOLS23\Resources\Images";}