PDFRedact

1//
2// Copyright (c) 2001-2020 by PDFTron Systems Inc. All Rights Reserved.
3//
4
5using System;
6using System.Collections.Generic;
7using System.IO;
8using System.Threading.Tasks;
9using Windows.Foundation;
10
11using pdftron.PDF;
12using pdftron.SDF;
13
14using PDFNetUniversalSamples.ViewModels;
15
16namespace PDFNetSamples
17{
18    public sealed class PDFRedactTest : Sample
19    {
20        public PDFRedactTest() :
21            base("PDFRedact", "PDF Redactor is a separately licensable Add-on that offers options to remove (not just covering or obscuring) content within a region of PDF. ")
22        {
23        }
24
25        public override IAsyncAction RunAsync()
26        {
27            return Task.Run(new System.Action(async () => {
28                WriteLine("--------------------------------");
29                WriteLine("Starting PDFRedact Test...");
30                WriteLine("--------------------------------\n");
31
32                try
33                {
34                    IList<RedactorRedaction> rarr = new List<RedactorRedaction>();
35                    rarr.Add(new RedactorRedaction(1, new pdftron.PDF.Rect(0, 0, 600, 600), true, "Top Secret"));
36                    rarr.Add(new RedactorRedaction(2, new pdftron.PDF.Rect(30, 30, 550, 550), true, "Top Secret"));
37                    rarr.Add(new RedactorRedaction(2, new pdftron.PDF.Rect(100, 100, 200, 200), false, "bar"));
38                    rarr.Add(new RedactorRedaction(2, new pdftron.PDF.Rect(300, 300, 400, 400), false, ""));
39                    rarr.Add(new RedactorRedaction(2, new pdftron.PDF.Rect(500, 500, 600, 600), false, ""));
40                    rarr.Add(new RedactorRedaction(3, new pdftron.PDF.Rect(0, 0, 700, 20), false, ""));
41                    string output_file_path = Path.Combine(OutputPath, "redacted.pdf");
42                    await RedactAsync(Path.Combine(InputPath, "newsletter.pdf"), output_file_path, rarr);
43                }
44                catch (Exception e)
45                {
46                    WriteLine(e.Message);
47                }
48
49                WriteLine("\n--------------------------------");
50                WriteLine("Done PDFRedact Test.");
51                WriteLine("--------------------------------\n");
52            })).AsAsyncAction();
53        }
54
55        async Task RedactAsync(string input, string output, IList<RedactorRedaction> rarr)
56        {
57            using (PDFDoc doc = new PDFDoc(input))
58            {
59                doc.InitSecurityHandler();
60
61                RedactorAppearance app = new RedactorAppearance();
62                //app.Font = new System.Drawing.Font("Arial", 12);
63                app.PositiveOverlayColor = Windows.UI.Colors.Red;
64                app.NegativeOverlayColor = Windows.UI.Colors.WhiteSmoke;
65
66                string output_file_path = Path.Combine(OutputPath, "redacted.pdf");
67                Redactor.Redact(doc, rarr, app);
68                await doc.SaveAsync(output_file_path, SDFDocSaveOptions.e_linearized);
69                WriteLine("Result of redaction saved in " + output_file_path);
70                await AddFileToOutputList(output_file_path).ConfigureAwait(false);
71            }
72        }
73	}
74}