←Select platform

FontWidth Property

Summary
Font width in PDF units.
Syntax
C#
C++/CLI
Java
Python
public double FontWidth { get; set; } 
public double getFontWidth(); 
public void setFontWidth( 
   double doubleValue 
); 
public: 
property double FontWidth { 
   double get(); 
   void set (    double ); 
} 
FontWidth # get and set (PDFTextProperties) 

Property Value

A System.Double that represents the font width in PDF units (1/72 of an inch and bottom left). The default value is 0.

Remarks

This value contains the width of this PDF text object in PDF units (1/72 of an inch and bottom left). You can use the PDFDocumentPage.ConvertPoint method to convert the value to a pixels or inches and then to points if required. Refer to FontHeight for an example.

This value contains the external and internal leading of the text item, to get the bounds of the box that exactly surrounds the text object, use PDFObject.Bounds.

For more information, refer to PDF Coordinate System.

Example
C#
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:\LEADTOOLS22\Resources\Images"; 
} 
Requirements

Target Platforms

Help Version 22.0.2023.7.10
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.

Leadtools.Pdf Assembly

Products | Support | Contact Us | Intellectual Property Notices
© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.