ListFonts.cs
- //
- // This code is part of Document Solutions for PDF demos.
- // Copyright (c) MESCIUS inc. All rights reserved.
- //
- using System;
- using System.IO;
- using System.Drawing;
- using System.Collections.Generic;
- using System.Linq;
- using GrapeCity.Documents.Pdf;
- using GrapeCity.Documents.Text;
-
- namespace DsPdfWeb.Demos.Basics
- {
- // This sample lists all fonts found in a loaded PDF,
- // prints some info for each font, and indicates whether a Font object
- // can be created from the font in the PDF.
- public class ListFonts
- {
- public int CreatePDF(Stream stream)
- {
- var sourcePDF = "CompleteJavaScriptBook.pdf";
-
- var doc = new GcPdfDocument();
- var page = doc.NewPage();
-
- var rc = Common.Util.AddNote(
- "This sample loads an arbitrary PDF into a temporary GcPdfDocument, " +
- "and lists all fonts found in that document, with some of their properties. " +
- "It also tries to create a Font object from each of those PDF fonts, " +
- "and reports whether this operation succeeded.",
- page);
-
- // Text layout to render the text:
- var tab = 24;
- var tl = page.Graphics.CreateTextLayout();
- tl.DefaultFormat.Font = StandardFonts.Times;
- tl.DefaultFormat.FontSize = 12;
- tl.MaxWidth = doc.PageSize.Width;
- tl.MaxHeight = doc.PageSize.Height;
- tl.MarginAll = rc.Left;
- tl.MarginTop = rc.Bottom + 36;
- tl.TabStops = new List<TabStop>()
- {
- new TabStop(tab)
- };
- tl.FirstLineIndent = -tab;
- tl.MarginRight = 144;
-
- // Text split options for widow/orphan control:
- var to = new TextSplitOptions(tl)
- {
- KeepParagraphLinesTogether = true,
- MinLinesInFirstParagraph = 2,
- MinLinesInLastParagraph = 2,
- RestMarginTop = rc.Left,
- };
-
- // Open an arbitrary PDF, load it into a temp document and get all fonts:
- using var fs = File.OpenRead(Path.Combine("Resources", "PDFs", sourcePDF));
- var doc1 = new GcPdfDocument();
- doc1.Load(fs);
-
- var fonts = doc1.GetFonts();
-
- tl.AppendLine($"Total of {fonts.Count} fonts found in {sourcePDF}:");
- tl.AppendLine();
- int i = 0;
- foreach (var font in fonts)
- {
- var nativeFont = font.CreateNativeFont();
- tl.Append($"{i}:\tBaseFont: {font.BaseFont}; IsEmbedded: {font.IsEmbedded}.");
- tl.AppendParagraphBreak();
- if (nativeFont != null)
- tl.AppendLine($"\tCreateNativeFont succeeded, family: {nativeFont.FontFamilyName}; bold: {nativeFont.FontBold}; italic: {nativeFont.FontItalic}.");
- else
- tl.AppendLine("\tCreateNativeFont failed");
- tl.AppendLine();
- ++i;
- }
- tl.PerformLayout(true);
- while (true)
- {
- // 'rest' will accept the text that did not fit:
- var splitResult = tl.Split(to, out TextLayout rest);
- doc.Pages.Last.Graphics.DrawTextLayout(tl, PointF.Empty);
- if (splitResult != SplitResult.Split)
- break;
- tl = rest;
- doc.NewPage();
- }
- // Done:
- doc.Save(stream);
- return doc.Pages.Count;
- }
- }
- }
-