Gets a list of the embedded fonts of this PDFDocument.
public IList<PDFFont> Fonts { get; }
A list of PDFFonts contained in this PDFDocument.
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";
}