AddImage

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;
11using pdftron.SDF;
12
13using pdftron.Common;
14using PDFNetUniversalSamples.ViewModels;
15
16namespace PDFNetSamples
17{
18    /// <summary>
19    //-----------------------------------------------------------------------------------
20    // This sample illustrates how to embed various raster image formats 
21    // (e.g. TIFF, JPEG, JPEG2000, JBIG2, GIF, PNG, BMP, etc.) in a PDF document.
22    //-----------------------------------------------------------------------------------
23    /// </summary>
24    public sealed class AddImageTest : Sample
25    {
26        public AddImageTest() :
27            base("AddImage", "This sample illustrates how to embed various raster image formats (e.g. TIFF, JPEG, JPEG2000, JBIG2, GIF, PNG, BMP, etc.) in a PDF document.")
28        {
29        }
30
31        public override IAsyncAction RunAsync()
32        {
33            return Task.Run(new System.Action(async () =>
34            {
35                WriteLine("--------------------------------");
36                WriteLine("Starting Add Image Test...");
37                WriteLine("--------------------------------\n");
38                try
39                {
40                    PDFDoc doc = new PDFDoc();
41                    SDFDoc sdfDoc = doc.GetSDFDoc();
42
43                    ElementBuilder bld = new ElementBuilder();	// Used to build new Element objects
44                    ElementWriter writer = new ElementWriter();	// Used to write Elements to the page	
45
46                    Page page = doc.PageCreate();	// Start a new page 
47                    writer.Begin(page);				// Begin writing to this page
48
49                    // ----------------------------------------------------------
50                    // Embed a JPEG image to the output document. 
51                    Image img = await Image.CreateAsync(sdfDoc, Path.Combine(InputPath, "peppers.jpg"));
52
53                    Element element = bld.CreateImage(img, new Matrix2D(200, 0, 0, 250, 50, 500));
54                    writer.WritePlacedElement(element);
55
56
57                    // ----------------------------------------------------------
58                    // Add a TIFF image to the output file
59                    img = await Image.CreateAsync(sdfDoc, Path.Combine(InputPath, "grayscale.tif"));
60                    element = bld.CreateImage(img, new Matrix2D(img.GetImageWidth(), 0, 0, img.GetImageHeight(), 10, 50));
61                    writer.WritePlacedElement(element);
62
63                    writer.End();	// Finish writing to the page
64                    doc.PagePushBack(page);
65
66
67                    // ----------------------------------------------------------
68                    // Embed a TIFF image using JBIG2 Encoding
69
70                    // Create a new page 
71                    page = doc.PageCreate(new pdftron.PDF.Rect(0, 0, 612, 794));
72                    writer.Begin(page);	// Begin writing to the page
73
74                    // Use JBIG2 Encoding
75                    ObjSet objset = new ObjSet();
76                    Obj jbig2_hint = objset.CreateName("JBIG2");
77
78                    img = await Image.CreateAsync(sdfDoc, Path.Combine(InputPath, "multipage.tif"), jbig2_hint);
79                    element = bld.CreateImage(img, new Matrix2D(612, 0, 0, 794, 0, 0));
80                    writer.WritePlacedElement(element);
81
82                    writer.End();  // Finish writing to the page
83                    doc.PagePushBack(page);
84
85                    // Embed the second TIFF frame. Use JBIG2 Encoding
86                    page = doc.PageCreate(); // Create a new page 
87                    writer.Begin(page);		 // Begin writing to this page
88
89
90                    // ----------------------------------------------------------
91                    // Add a JPEG2000 (JP2) image to the output file
92
93                    // Create a new page 
94                    page = doc.PageCreate();
95                    writer.Begin(page);	// Begin writing to the page
96
97                    // Embed the image.
98                    img = await Image.CreateAsync(sdfDoc, Path.Combine(InputPath, "palm.jp2"));
99
100                    // Position the image on the page.
101                    element = bld.CreateImage(img, new Matrix2D(img.GetImageWidth(), 0, 0, img.GetImageHeight(), 96, 80));
102                    writer.WritePlacedElement(element);
103
104                    // Write 'JPEG2000 Sample' text string under the image.
105                    writer.WriteElement(bld.CreateTextBegin(Font.Create(doc, FontStandardType1Font.e_times_roman), 32)); 
106                    element = bld.CreateTextRun("JPEG2000 Sample");
107                    element.SetTextMatrix(1, 0, 0, 1, 190, 30);
108                    writer.WriteElement(element);
109                    writer.WriteElement(bld.CreateTextEnd());
110
111                    writer.End();	// Finish writing to the page
112                    doc.PagePushBack(page);
113                  
114                    // Calling Dispose() results in increased performance and lower memory consumption.
115                    bld.Dispose();
116                    writer.Dispose();
117
118                    String output_file_path = Path.Combine(OutputPath, "addimage.pdf");
119                    await doc.SaveAsync(output_file_path, SDFDocSaveOptions.e_linearized);
120                    WriteLine("Done. Results saved in " + output_file_path);
121                    await AddFileToOutputList(output_file_path).ConfigureAwait(false);
122
123                    doc.Destroy();
124                }
125                catch (Exception e)
126                {
127                    WriteLine(GetExceptionMessage(e));
128                }
129
130                WriteLine("\n--------------------------------");
131                WriteLine("Done Annotation Test.");
132                WriteLine("--------------------------------\n");
133            })).AsAsyncAction();
134        }
135    }
136}