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add more examples to the examples solution

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This commit is contained in:
Eliot Jones 2020-04-25 10:14:05 +01:00
parent 27e251f921
commit 391b650e3c
5 changed files with 155 additions and 16 deletions
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23
examples/ExtractImages.cs
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@ -1,7 +1,6 @@
namespace UglyToad.Examples
{
using System;
using System.Linq;
using PdfPig;
using PdfPig.Content;
using PdfPig.XObjects;
@ -16,25 +15,23 @@
{
foreach (var image in page.GetImages())
{
if (!image.TryGetBytes(out var b))
{
b = image.RawBytes;
}
var type = string.Empty;
switch (image)
{
case XObjectImage ximg:
byte[] b;
try
{
b = ximg.Bytes.ToArray();
}
catch
{
b = ximg.RawBytes.ToArray();
}
Console.WriteLine($"Image with {b.Length} bytes and dictionary {ximg.ImageDictionary}.");
type = "XObject";
break;
case InlineImage inline:
Console.WriteLine($"Inline image: {inline.RawBytes.Count} bytes.");
type = "Inline";
break;
}
Console.WriteLine($"Image with {b.Count} bytes of type '{type}' on page {page.Number}. Location: {image.Bounds}.");
}
}
}

50
examples/GeneratePdfA2AFile.cs Normal file
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@ -0,0 +1,50 @@
namespace UglyToad.Examples
{
using System;
using System.IO;
using System.Linq;
using PdfPig.Content;
using PdfPig.Core;
using PdfPig.Writer;
internal static class GeneratePdfA2AFile
{
public static void Run(string trueTypeFontPath, string jpgImagePath)
{
var builder = new PdfDocumentBuilder
{
ArchiveStandard = PdfAStandard.A2A
};
var font = builder.AddTrueTypeFont(File.ReadAllBytes(trueTypeFontPath));
var page = builder.AddPage(PageSize.A4);
var pageTop = new PdfPoint(0, page.PageSize.Top);
var letters = page.AddText("This is some text added to the output file near the top of the page.",
12,
pageTop.Translate(20, -25),
font);
var bottomOfText = letters.Min(x => x.GlyphRectangle.Bottom);
var imagePlacement = new PdfRectangle(new PdfPoint(50, bottomOfText - 200),
new PdfPoint(150, bottomOfText));
page.AddJpeg(File.ReadAllBytes(jpgImagePath), imagePlacement);
var fileBytes = builder.Build();
try
{
var location = AppDomain.CurrentDomain.BaseDirectory;
var output = Path.Combine(location, "outputOfPdfA2A.pdf");
File.WriteAllBytes(output, fileBytes);
Console.WriteLine($"File output to: {output}");
}
catch (Exception ex)
{
Console.WriteLine($"Failed to write output to file due to error: {ex}.");
}
}
}
}

41
examples/GetFormContents.cs Normal file
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@ -0,0 +1,41 @@
namespace UglyToad.Examples
{
using System;
using System.Linq;
using PdfPig;
using PdfPig.AcroForms.Fields;
internal static class GetFormContents
{
public static void Run(string filePath)
{
using (var document = PdfDocument.Open(filePath))
{
if (!document.TryGetForm(out var form))
{
Console.WriteLine($"No form found in file: {filePath}.");
return;
}
var page1Fields = form.GetFieldsForPage(1);
foreach (var field in page1Fields)
{
switch (field)
{
case AcroTextField text:
Console.WriteLine($"Found text field on page 1 with text: {text.Value}.");
break;
case AcroCheckboxesField cboxes:
Console.WriteLine($"Found checkboxes field on page 1 with {cboxes.Children.Count} checkboxes.");
break;
case AcroListBoxField listbox:
var opts = string.Join(", ", listbox.Options.Select(x => x.Name));
Console.WriteLine($"Found listbox field on page 1 with options: {opts}.");
break;
}
}
}
}
}
}

30
examples/MergePdfDocuments.cs Normal file
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@ -0,0 +1,30 @@
namespace UglyToad.Examples
{
using System;
using System.IO;
using System.Linq;
using PdfPig.Writer;
internal static class MergePdfDocuments
{
public static void Run(string filePath1, string filePath2, string filePath3)
{
var fileBytes = new[] { filePath1, filePath2, filePath3 }
.Select(File.ReadAllBytes).ToList();
var resultFileBytes = PdfMerger.Merge(fileBytes);
try
{
var location = AppDomain.CurrentDomain.BaseDirectory;
var output = Path.Combine(location, "outputOfMerge.pdf");
File.WriteAllBytes(output, resultFileBytes);
Console.WriteLine($"File output to: {output}");
}
catch (Exception ex)
{
Console.WriteLine($"Failed to write output to file due to error: {ex}.");
}
}
}
}

27
examples/Program.cs
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@ -21,12 +21,27 @@
() => OpenDocumentAndExtractWords.Run(Path.Combine(filesDirectory, "Two Page Text Only - from libre office.pdf")))
},
{2,
("Extract Text with newlines (using built-in content extractor)",
() => ExtractTextWithNewlines.Run(Path.Combine(filesDirectory, "Two Page Text Only - from libre office.pdf")))
},
{3,
("Extract images",
() => ExtractImages.Run(Path.Combine(filesDirectory, "2006_Swedish_Touring_Car_Championship.pdf")))
},
{3,
("Extract Text with newlines (using built-in content extractor)",
() => ExtractTextWithNewlines.Run(Path.Combine(filesDirectory, "Two Page Text Only - from libre office.pdf")))
{4,
("Merge PDF Documents",
() => MergePdfDocuments.Run(Path.Combine(filesDirectory, "Two Page Text Only - from libre office.pdf"),
Path.Combine(filesDirectory, "2006_Swedish_Touring_Car_Championship.pdf"),
Path.Combine(filesDirectory, "Rotated Text Libre Office.pdf")))
},
{5,
("Extract form contents",
() => GetFormContents.Run(Path.Combine(filesDirectory, "AcroFormsBasicFields.pdf")))
},
{6,
("Generate PDF/A-2A compliant file",
() => GeneratePdfA2AFile.Run(Path.Combine(filesDirectory, "..", "..", "Fonts", "TrueType", "Roboto-Regular.ttf"),
Path.Combine(filesDirectory, "smile-250-by-160.jpg")))
}
};
@ -53,6 +68,12 @@
}
act.action.Invoke();
Console.WriteLine();
Console.WriteLine();
Console.WriteLine(choices);
Console.WriteLine();
} while (true);
}
}