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private static void EncriptPdfNonlatinPassCharacters()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_SecuritySignatures();
using (var fileSecurity = new Aspose.Pdf.Facades.PdfFileSecurity())
{
// Bind PDF document
fileSecurity.BindPdf(dataDir + "input.pdf");
// Encrypt file using 256-bit encryption
bool isSuccessful = fileSecurity.EncryptFile("æøå", "æøå", Aspose.Pdf.Facades.DocumentPrivilege.Print,
Aspose.Pdf.Facades.KeySize.x256, Aspose.Pdf.Facades.Algorithm.AES);
Console.WriteLine(isSuccessful);
// Save PDF document
fileSecurity.Save(dataDir + "PdfNonlatinPassEncrypted_out.pdf");
}
}
TextState.Invisibleを使用して、レンダリングモード設定からテキストの不可視性に関する情報を取得してください。
テストには以下のコードを使用しました:
private static void DisplayTextInvisibility()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_Text();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "PdfWithHiddenText.pdf"))
{
Console.WriteLine(document.FileName);
// Use TextFragmentAbsorber with no parameters to get all text
var absorber = new Aspose.Pdf.Text.TextFragmentAbsorber();
absorber.Visit(document.Pages[1]);
var textFragmentCollection = absorber.TextFragments;
// Iterate through text fragments to find hidden text
for (int i = 1; i <= textFragmentCollection.Count; i++)
{
var fragment = textFragmentCollection[i];
Console.WriteLine("Fragment {0} at {1}", i, fragment.Rectangle.ToString());
Console.WriteLine("Text: {0}", fragment.Text);
Console.WriteLine("RenderingMode: {0}", fragment.TextState.RenderingMode.ToString());
Console.WriteLine("Invisibility: {0}", fragment.TextState.Invisible);
Console.WriteLine("---");
}
}
}
private static void GetPdfLayers()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_Layers();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "PdfWithLayers.pdf"))
{
// Get layers from the first page
var layers = document.Pages[1].Layers;
// Save each layer to the output path
foreach (var layer in layers)
{
Console.WriteLine("Document {0} contains a layer named: {1} ", document.FileName, layer.Name);
}
}
}
署名エリアのラベルのフォント色と署名の外観の背景色をAspose.PDF for .NETでカスタマイズします。
private static void SignPdfWithCustomColorsInAppearance(string pfxFilePath, string password)
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_SecuritySignatures();
// Instantiate PdfFileSignature object
using (var pdfFileSignature = new Aspose.Pdf.Facades.PdfFileSignature())
{
// Bind PDF document
pdfFileSignature.BindPdf(dataDir + "DigitallySign.pdf");
var rect = new System.Drawing.Rectangle(310, 45, 200, 50);
// Create PKCS#7 object for sign
var pkcs = new Aspose.Pdf.Forms.PKCS7(pfxFilePath, password);
// Set signature custom appearance
pkcs.CustomAppearance = new Aspose.Pdf.Forms.SignatureCustomAppearance()
{
// Set colors
ForegroundColor = Aspose.Pdf.Color.DarkGreen,
BackgroundColor = Aspose.Pdf.Color.LightSeaGreen,
};
// Sign PDF file
pdfFileSignature.Sign(1, true, rect, pkcs);
// Save PDF document
pdfFileSignature.Save(dataDir + "SignPdfWithCustomColorsInAppearance_out.pdf");
}
}
21.8バージョンでは、ForegroundColorプロパティを使用してデジタル署名のテキスト色を変更できます。
private static void SignPdfWithForegroundColorInAppearance(string pfxFilePath, string password)
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_SecuritySignatures();
// Instantiate PdfFileSignature object
using (var pdfSign = new Aspose.Pdf.Facades.PdfFileSignature())
{
// Bind PDF document
pdfSign.BindPdf(dataDir + "DigitallySign.pdf");
var rect = new System.Drawing.Rectangle(310, 45, 200, 50);
// Create PKCS#7 object for sign
var pkcs = new Aspose.Pdf.Forms.PKCS7(pfxFilePath, password);
// Set signature custom appearance
pkcs.CustomAppearance = new Aspose.Pdf.Forms.SignatureCustomAppearance()
{
// Set text color
ForegroundColor = Aspose.Pdf.Color.Green
};
// Sign PDF file
pdfSign.Sign(1, true, rect, pkcs);
// Save PDF document
pdfSign.Save(dataDir + "SignPdfWithForegroundInAppearance_out.pdf");
}
}
XSLパラメータを追加するには、独自のXsltArgumentListを作成し、XslFoLoadOptionsのプロパティとして設定する必要があります。以下のスニペットは、上記のサンプルファイルでこのクラスを使用する方法を示しています。
private static void ConvertXslfoToPdfWithArgumentList()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_DocumentConversion();
// Create convert options
var options = new Aspose.Pdf.XslFoLoadOptions(dataDir + "XSLFOToPdfInput.xslt");
// Example of using XsltArgumentList
options.XsltArgumentList = new XsltArgumentList();
options.XsltArgumentList.AddParam("isBoldName", "", "yes");
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "XSLFOToPdfInput.xml", options))
{
// Save PDF document
document.Save(dataDir + "XslfoToPdfWithArgumentList_out.pdf");
}
}
Aspose.PDF for .NETを使用すると、ImagePlacementAbsorberを使用して文書から画像を非表示にできます:
private static void HideImageInPdf()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_Images();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "ImagePlacement.pdf"))
{
// Create ImagePlacementAbsorber instance
var absorber = new Aspose.Pdf.ImagePlacementAbsorber();
// Load the images of the first page
document.Pages[1].Accept(absorber);
// Iterate through each image placement on the first page
foreach (var imagePlacement in absorber.ImagePlacements)
{
// Hide image
imagePlacement.Hide();
}
// Save PDF document
document.Save(dataDir + "HideImageInPdf_out.pdf");
}
}
FontクラスのBaseFontプロパティを使用して、プレフィックス付きの完全なフォントを取得できます。
private static void DisplayFontFullNames()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_WorkingDocuments();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "BreakfastMenu.pdf"))
{
// Get document fonts
var fonts = document.FontUtilities.GetAllFonts();
// Iterate through the fonts
foreach (var font in fonts)
{
// Show font names
Console.WriteLine($"font name : {font.FontName} BaseFont name : {font.BaseFont}");
}
}
}
Aspose.PDF 21.4では、画像を結合できます。次のコードスニペットに従ってください:
private static void MergeAsJpeg()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_Images();
List<Stream> inputImagesStreams = new List<Stream>();
using (FileStream firstImageStream = new FileStream(dataDir + "aspose.jpg", FileMode.Open))
{
inputImagesStreams.Add(firstImageStream);
using (FileStream secondImageStream = new FileStream(dataDir + "aspose-logo.jpg", FileMode.Open))
{
inputImagesStreams.Add(secondImageStream);
// Invoke PdfConverter.MergeImages to perform merge
using (Stream inputStream = Aspose.Pdf.Facades.PdfConverter.MergeImages(inputImagesStreams,
Aspose.Pdf.Drawing.ImageFormat.Jpeg, Aspose.Pdf.Facades.ImageMergeMode.Vertical, 1, 1))
{
using (FileStream outputStream = new FileStream(dataDir + "Merge_out.jpg", FileMode.Create))
{
byte[] buffer = new byte[32768];
int read;
while ((read = inputStream.Read(buffer, 0, buffer.Length)) > 0)
{
outputStream.Write(buffer, 0, read);
}
}
}
}
}
}
また、画像をTiff形式で結合することもできます:
private static void MergeAsTiff()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_Images();
List<Stream> inputImagesStreams = new List<Stream>();
using (FileStream firstImageStream = new FileStream(dataDir + "aspose.jpg", FileMode.Open))
{
inputImagesStreams.Add(firstImageStream);
using (FileStream secondImageStream = new FileStream(dataDir + "aspose-logo.jpg", FileMode.Open))
{
inputImagesStreams.Add(secondImageStream);
// Invoke PdfConverter.MergeImagesAsTiff to perform merge
using (Stream inputStream = Aspose.Pdf.Facades.PdfConverter.MergeImagesAsTiff(inputImagesStreams))
{
using (FileStream outputStream = new FileStream(dataDir + "Merge_out.tiff", FileMode.Create))
{
byte[] buffer = new byte[32768];
int read;
while ((read = inputStream.Read(buffer, 0, buffer.Length)) > 0)
{
outputStream.Write(buffer, 0, read);
}
}
}
}
}
}
次のコードスニペットを使用すると、Azure情報保護で保護されたPDFファイルの暗号化されたペイロードにアクセスできるはずです:
private static void AzureInformationProtection()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_Attachments();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "GetAlltheAttachments.pdf"))
{
if (document.EmbeddedFiles[1].AFRelationship == Aspose.Pdf.AFRelationship.EncryptedPayload)
{
if (document.EmbeddedFiles[1].EncryptedPayload != null)
{
// document.EmbeddedFiles[1].EncryptedPayload.Type == "EncryptedPayload"
// document.EmbeddedFiles[1].EncryptedPayload.Subtype == "MicrosoftIRMServices"
// document.EmbeddedFiles[1].EncryptedPayload.Version == "2"
}
}
}
}
このバージョンのAspose.PDFでは、背景色を取得する機能が利用可能になりました。TextFragmentAbsorberオブジェクトのオプションでsearchOptions.SearchForTextRelatedGraphics = true;を指定する必要があります。
以下のコードを考慮してください:
private static void DisplayPdfTextBackgroundColor()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_Text();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "PdfWithTextBackgroundColor.pdf"))
{
// Use TextFragmentAbsorber with no parameters to get all text
var textFragmentAbsorber = new Aspose.Pdf.Text.TextFragmentAbsorber();
var searchOptions = new Aspose.Pdf.Text.TextSearchOptions(false);
// Setting this option to 'true' is necessary
searchOptions.SearchForTextRelatedGraphics = true;
textFragmentAbsorber.TextSearchOptions = searchOptions;
// Accept the absorber for all the pages
document.Pages.Accept(textFragmentAbsorber);
// Loop through the fragments
foreach (var textFragment in textFragmentAbsorber.TextFragments)
{
Console.WriteLine("Text: '{0}'", textFragment.Text);
Console.WriteLine("BackgroundColor: '{0}'", textFragment.TextState.BackgroundColor);
Console.WriteLine("ForegroundColor: '{0}'", textFragment.TextState.ForegroundColor);
Console.WriteLine("Segment BackgroundColor: '{0}'", textFragment.Segments[1].TextState.BackgroundColor);
}
}
}
また、Aspose.PDF 21.1では、PDFをHTMLに変換した後、埋め込まれたフォントが出力HTML文書で利用可能になりました。これは、新しいブール値の保存オプションHtmlSaveParameter.SaveFullFontによって可能です。
以下はコードスニペットです:
private static void PdfToHtmlWithFullFont()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_DocumentConversion();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "PDFToHTML.pdf"))
{
// Instantiate HTML SaveOptions object
var options = new Aspose.Pdf.HtmlSaveOptions
{
RasterImagesSavingMode = Aspose.Pdf.HtmlSaveOptions.RasterImagesSavingModes.AsEmbeddedPartsOfPngPageBackground,
PartsEmbeddingMode = Aspose.Pdf.HtmlSaveOptions.PartsEmbeddingModes.EmbedAllIntoHtml,
LettersPositioningMethod = Aspose.Pdf.HtmlSaveOptions.LettersPositioningMethods.UseEmUnitsAndCompensationOfRoundingErrorsInCss,
FontSavingMode = Aspose.Pdf.HtmlSaveOptions.FontSavingModes.AlwaysSaveAsTTF,
SaveTransparentTexts = true,
// New option
SaveFullFont = true
};
// Save HTML document
document.Save(dataDir + "PdfToHtmlWithFullFont_out.html", options);
}
}
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