ContentReplacer

1//
2// Copyright (c) 2001-2020 by PDFTron Systems Inc. All Rights Reserved.
3//
4
5using System;
6using System.IO;
7using System.Threading.Tasks;
8using Windows.Foundation;
9
10using pdftron.PDF;
11
12using PDFNetUniversalSamples.ViewModels;
13
14namespace PDFNetSamples
15{
16    public sealed class ContentReplacerTest : Sample
17    {
18        public ContentReplacerTest() :
19            base("ContentReplacer", "This sample shows how to use 'pdftron.PDF.ContentReplacer' to search and replace text strings and images in existing PDF (e.g. business cards and other PDF templates).")
20        {
21        }
22
23        public override IAsyncAction RunAsync()
24        {
25            return Task.Run(new System.Action(async () => {
26                WriteLine("--------------------------------");
27                WriteLine("Starting ContentReplacer Test...");
28                WriteLine("--------------------------------\n");
29			    // The following example illustrates how to replace an image in a certain region,
30			    // and how to change template text.
31			    try
32			    {
33                    String input_file_path = Path.Combine(InputPath, "BusinessCardTemplate.pdf");
34                    WriteLine("Opening input file " + input_file_path );
35				    PDFDoc doc = new PDFDoc(input_file_path);
36				    doc.InitSecurityHandler();
37
38				    // first, replace the image on the first page
39				    ContentReplacer replacer = new ContentReplacer();
40                    pdftron.PDF.Page page = doc.GetPage(1);
41                    //pdftron.SDF.SDFDoc sdoc = new pdftron.SDF.SDFDoc(doc);
42                    pdftron.PDF.Image img = pdftron.PDF.Image.Create(doc.GetSDFDoc(), Path.Combine(InputPath, "peppers.jpg"));
43				    replacer.AddImage(page.GetMediaBox(), img.GetSDFObj());
44				    // next, replace the text place holders on the second page
45				    replacer.AddString("NAME", "John Smith");
46				    replacer.AddString("QUALIFICATIONS", "Philosophy Doctor"); 
47				    replacer.AddString("JOB_TITLE", "Software Developer"); 
48				    replacer.AddString("ADDRESS_LINE1", "#100 123 Software Rd"); 
49				    replacer.AddString("ADDRESS_LINE2", "Vancouver, BC"); 
50				    replacer.AddString("PHONE_OFFICE", "604-730-8989"); 
51				    replacer.AddString("PHONE_MOBILE", "604-765-4321"); 
52				    replacer.AddString("EMAIL", "info@pdftron.com"); 
53				    replacer.AddString("WEBSITE_URL", "http://www.pdftron.com"); 
54				    // finally, apply
55				    replacer.Process(page);
56
57                    String output_file_path = Path.Combine(OutputPath, "BusinessCard.pdf");
58                    await doc.SaveAsync(output_file_path, 0);
59				    doc.Destroy();
60                    WriteLine("Done. Result saved in " + output_file_path);
61                    await AddFileToOutputList(output_file_path).ConfigureAwait(false);
62			    }
63			    catch (Exception e)
64			    {
65                    WriteLine(GetExceptionMessage(e));
66                }
67
68			    // The following example illustrates how to replace text in a given region
69			    try {
70                    String input_file_path = Path.Combine(InputPath, "newsletter.pdf");
71                    PDFDoc doc = new PDFDoc(input_file_path);
72				    doc.InitSecurityHandler();
73
74				    ContentReplacer replacer = new ContentReplacer();
75                    pdftron.PDF.Page page = doc.GetPage(1);
76                    pdftron.PDF.Rect target_region = page.GetMediaBox();
77				    string replacement_text = "hello hello hello hello hello hello hello hello hello hello";
78				    replacer.AddText(target_region, replacement_text);
79				    replacer.Process(page);
80
81                    String output_file_path = Path.Combine(OutputPath, "ContentReplaced.pdf");
82                    await doc.SaveAsync(output_file_path, 0);
83				    doc.Destroy();
84                    WriteLine("Done. Result saved in " + output_file_path);
85                    await AddFileToOutputList(output_file_path).ConfigureAwait(false);
86			    }
87			    catch (Exception e)
88			    {
89                    WriteLine(GetExceptionMessage(e));
90                }
91                WriteLine("\n--------------------------------");
92                WriteLine("Done ContentReplacer Test.");
93                WriteLine("--------------------------------\n");
94            })).AsAsyncAction();
95		}
96	}
97}