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O que há de novo 2023
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O que há de novo no Aspose.PDF 23.12
O formulário pode ser encontrado e o texto pode ser substituído usando o seguinte trecho de código:
private static void ReplaceTextInPdfForm()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_Forms();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "TextBox.pdf"))
{
// Get the forms from the first page
var forms = document.Pages[1].Resources.Forms;
foreach (var form in forms)
{
// Check if the form is of type "Typewriter" and subtype "Form"
if (form.IT == "Typewriter" && form.Subtype == "Form")
{
// Create a TextFragmentAbsorber to find text fragments
var absorber = new Aspose.Pdf.Text.TextFragmentAbsorber();
absorber.Visit(form);
// Clear the text in each fragment
foreach (var fragment in absorber.TextFragments)
{
fragment.Text = "";
}
}
}
// Save PDF document
document.Save(dataDir + "TextBox_out.pdf");
}
}
Ou, o formulário pode ser completamente removido:
private static void DeleteSpecifiedForm1()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_Forms();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "TextField.pdf"))
{
// Get the forms from the first page
var forms = document.Pages[1].Resources.Forms;
// Iterate through the forms and delete the ones with type "Typewriter" and subtype "Form"
for (int i = forms.Count; i > 0; i--)
{
if (forms[i].IT == "Typewriter" && forms[i].Subtype == "Form")
{
forms.Delete(forms[i].Name);
}
}
// Save PDF document
document.Save(dataDir + "TextBox_out.pdf");
}
}
Outra variante de remoção do formulário:
private static void DeleteSpecifiedForm2()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_Forms();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "TextField.pdf"))
{
// Get the forms from the first page
var forms = document.Pages[1].Resources.Forms;
// Iterate through the forms and delete the ones with type "Typewriter" and subtype "Form"
foreach (var form in forms)
{
if (form.IT == "Typewriter" && form.Subtype == "Form")
{
var name = forms.GetFormName(form);
forms.Delete(name);
}
}
// Save PDF document
document.Save(dataDir + "TextBox_out.pdf");
}
}
- Todos os formulários podem ser excluídos usando o seguinte trecho de código:
private static void RemoveAllForms()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_Forms();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "TextField.pdf"))
{
// Get the forms from the first page
var forms = document.Pages[1].Resources.Forms;
// Clear all forms
forms.Clear();
// Save PDF document
document.Save(dataDir + "TextBox_out.pdf");
}
}
- Implementar conversão de PDF para Markdown:
private static void ConvertPDFtoMarkup()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_DocumentConversion();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "demo.pdf"))
{
// Create an instance of MarkdownSaveOptions to configure the Markdown export settings
var saveOptions = new MarkdownSaveOptions()
{
// Set to false to prevent the use of HTML <img> tags for images in the Markdown output
UseImageHtmlTag = false
};
// Specify the directory name where resources (like images) will be stored
saveOptions.ResourcesDirectoryName = "images";
// Save PDF document in Markdown format to the specified output file path using the defined save options
document.Save(dataDir + "PDFtoMarkup_out.md", saveOptions);
}
}
- Implementar conversão de OFD para PDF:
private static void ConvertOFDToPDF()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_DocumentConversion();
// Convert options
var options = new Aspose.Pdf.OfdLoadOptions();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "ConvertOFDToPDF.ofd", options))
{
// Save PDF document
document.Save(dataDir + "ConvertOFDToPDF_out.pdf");
}
}
Nesta versão, foi adicionado o plugin Merger:
private static void PdfMergeUsingPlugin()
{
string dataDir = RunExamples.GetDataDir_AsposePdf_Pages();
// Create annotation new instance of Merger
using (var merger = new Aspose.Pdf.Plugins.Merger())
{
// Create MergeOptions
var opt = new Aspose.Pdf.Plugins.MergeOptions();
opt.AddInput(new Aspose.Pdf.Plugins.FileDataSource(dataDir + "Concat1.pdf"));
opt.AddInput(new Aspose.Pdf.Plugins.FileDataSource(dataDir + "Concat2.pdf"));
opt.AddOutput(new Aspose.Pdf.Plugins.FileDataSource(dataDir + "ConcatenatePdfFiles_out.pdf"));
// Process the PDF merging
merger.Process(opt);
}
}
Além disso, nesta versão, foi adicionado o plugin ChatGPT:
private static async void InvokeChatGptPlugin()
{
using (var plugin = new Aspose.Pdf.Plugins.PdfChatGpt())
{
var options = new Aspose.Pdf.Plugins.PdfChatGptRequestOptions();
options.AddOutput(new Aspose.Pdf.Plugins.FileDataSource("PdfChatGPT_output.pdf")); // Add the output file path.
options.ApiKey = "Your API key."; // You need to provide the key to access the API.
options.MaxTokens = 1000; // The maximum number of tokens to generate in the chat completion.
// Add the request messages.
options.Messages.Add(new Aspose.Pdf.Plugins.Message
{
Content = "You are an annotation helpful assistant.",
Role = Aspose.Pdf.Plugins.Role.System
});
options.Messages.Add(new Aspose.Pdf.Plugins.Message
{
Content = "What is the biggest pizza diameter ever made?",
Role = Aspose.Pdf.Plugins.Role.User
});
// Process the request.
var result = await plugin.ProcessAsync(options);
var fileResultPath = result.ResultCollection[0].Data;
// The ChatGPT API chat completion object.
var chatCompletionObject = result.ResultCollection[1].Data as Aspose.Pdf.Plugins.ChatCompletion;
}
}
O que há de novo no Aspose.PDF 23.11
Nesta versão, é possível remover texto oculto de arquivos PDF:
private static void RemoveHiddenText()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_Text();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "HiddenText.pdf"))
{
// Use TextFragmentAbsorber with no parameters to get all text
var textAbsorber = new Aspose.Pdf.Text.TextFragmentAbsorber();
// This option can be used to prevent other text fragments from moving after hidden text replacement
textAbsorber.TextReplaceOptions = new Aspose.Pdf.Text.TextReplaceOptions(Aspose.Pdf.Text.TextReplaceOptions.ReplaceAdjustment.None);
document.Pages.Accept(textAbsorber);
// Remove hidden text
foreach (var fragment in textAbsorber.TextFragments)
{
if (fragment.TextState.Invisible)
{
fragment.Text = "";
}
}
// Save PDF document
document.Save(dataDir + "HiddenText_out.pdf");
}
}
Desde 23.11, suporte para interrupção de threads:
private static void InterruptExample()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_WorkingDocuments();
using (var monitor = new Aspose.Pdf.Multithreading.InterruptMonitor())
{
// A class that can produce long-drawn-out work
RowSpanWorker worker = new RowSpanWorker(dataDir + "RowSpanWorker_out.pdf", monitor);
var thread = new System.Threading.Thread(new System.Threading.ThreadStart(worker.Work));
thread.Start();
// The timeout should be less than the time required for full document save (without interruption)
System.Threading.Thread.Sleep(500);
// Interrupt the process
monitor.Interrupt();
// Wait for interruption...
thread.Join();
}
}
private class RowSpanWorker
{
private readonly string outputPath;
private readonly Aspose.Pdf.Multithreading.InterruptMonitor monitor;
public RowSpanWorker(string outputPath, Aspose.Pdf.Multithreading.InterruptMonitor monitor)
{
this.outputPath = outputPath;
this.monitor = monitor;
}
public void Work()
{
// This is some large text, used Lorem Ipsum in 10000 characters to cause suspension in processing
string text = RunExamples.GetLoremIpsumString(10000);
// Open PDF document
using (var document = new Aspose.Pdf.Document())
{
Aspose.Pdf.Multithreading.InterruptMonitor.ThreadLocalInstance = this.monitor;
var page = document.Pages.Add();
var table = new Aspose.Pdf.Table
{
DefaultCellBorder = new Aspose.Pdf.BorderInfo(Aspose.Pdf.BorderSide.All, 0.1F)
};
var row0 = table.Rows.Add();
// Add annotation cell that spans for two rows and contains annotation long-long text
var cell00 = row0.Cells.Add(text);
cell00.RowSpan = 2;
cell00.IsWordWrapped = true;
row0.Cells.Add("Ipsum Ipsum Ipsum Ipsum Ipsum Ipsum ");
row0.Cells.Add("Dolor Dolor Dolor Dolor Dolor Dolor ");
var row1 = table.Rows.Add();
row1.Cells.Add("IpsumDolor Dolor Dolor Dolor Dolor ");
row1.Cells.Add("DolorDolor Dolor Dolor Dolor Dolor ");
page.Paragraphs.Add(table);
try
{
// Save PDF document
document.Save(this.outputPath);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
}
}
O que há de novo no Aspose.PDF 23.10
A atualização atual apresenta três versões de remoção de tags de PDFs marcados.
- Remover algum elemento de nó de um documentElement (elemento raiz da árvore):
private static void RemoveStructElement()
{
var dataDir = RunExamples.GetDataDir_AsposePdf_WorkingDocuments();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "StructureElementsTree.pdf"))
{
// Access to root element(s)
var structure = document.LogicalStructure;
var documentElement = structure.Children[0];
var structElement = documentElement.Children.Count > 1 ? documentElement.Children[1] as Aspose.Pdf.Structure.StructElement : null;
if (documentElement.Children.Remove(structElement))
{
// Element removed. Save PDF document.
document.Save(dataDir + "StructureElementsRemoved.pdf");
}
// You can also delete the structElement itself
//if (structElement != null)
//{
// structElement.Remove();
// document.Save(outputPdfPath);
//}
}
}
- Remover todas as tags de elementos marcados do documento, mas manter os elementos de estrutura:
private static void RemoveMarkedElementsTags()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_WorkingDocuments();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "TH.pdf"))
{
// Access to root element(s)
var structure = document.LogicalStructure;
var root = structure.Children[0];
var queue = new Queue<Aspose.Pdf.Structure.Element>();
queue.Enqueue(root);
while (queue.TryDequeue(out var element))
{
foreach (var child in element.Children)
{
queue.Enqueue(child);
}
if (element is Aspose.Pdf.Structure.TextElement || element is Aspose.Pdf.Structure.FigureElement)
{
element.Remove();
}
}
// Save PDF document
document.Save(dataDir + "MarkedElementsTagsRemoved.pdf");
}
}
- Remover tags completamente:
private static void RemoveTags()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_WorkingDocuments();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "TH.pdf"))
{
// Access to root element(s)
var structure = document.LogicalStructure;
var documentElement = structure.Children[0];
documentElement.Remove();
// Save PDF document
document.Save(dataDir + "TagsRemoved.pdf");
}
}
Desde 23.10, foi implementado um novo recurso para medir a altura de caracteres. Use o seguinte código para medir a altura de um caractere.
private static void DisplayCharacterHeight()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_Text();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "ExtractTextAll.pdf"))
{
// Create TextFragmentAbsorber to get information about state of document text
var absorber = new Aspose.Pdf.Text.TextFragmentAbsorber();
absorber.Visit(document.Pages[1]);
// Get height of 'A' character being displayed with font of first text fragment
var textState = absorber.TextFragments[1].TextState;
var height = textState.MeasureHeight('A');
Console.WriteLine("The height of 'A' character displayed with {0} font size of {1} is {2:N3}", textState.Font.FontName, textState.FontSize,height);
}
}
Observe que a medição é baseada na fonte incorporada no documento. Se alguma informação para uma dimensão estiver faltando, este método retorna 0.
Além disso, esta versão fornece a assinatura de um PDF usando um HASH assinado:
private static void SignPdfUsingSignedHash(string certP12, string pfxPassword)
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_SecuritySignatures();
// Instantiate PdfFileSignature object
using (var sign = new Aspose.Pdf.Facades.PdfFileSignature())
{
// Bind PDF document
sign.BindPdf(dataDir + "input.pdf");
var pkcs7 = new Aspose.Pdf.Forms.PKCS7(certP12, pfxPassword);
// Create a delegate to external sign
pkcs7.CustomSignHash = delegate (byte[] signableHash, Aspose.Pdf.DigestHashAlgorithm digestHashAlgorithm)
{
X509Certificate2 signerCert = new X509Certificate2(certP12, pfxPassword, X509KeyStorageFlags.Exportable);
RSACryptoServiceProvider rsaCSP = new RSACryptoServiceProvider();
var xmlString = signerCert.PrivateKey.ToXmlString(true); //not supported on core 2.0
rsaCSP.FromXmlString(xmlString); //not supported on core 2.0
byte[] signedData = rsaCSP.SignHash(signableHash, CryptoConfig.MapNameToOID("SHA1"));
return signedData;
};
// Sign PDF file
sign.Sign(1, "reason", "cont", "loc", false, new System.Drawing.Rectangle(0, 0, 500, 500), pkcs7);
// Save PDF document
sign.Save(dataDir + "SignWithCertificate_out.pdf");
}
// Verify
using (var sign = new Aspose.Pdf.Facades.PdfFileSignature())
{
// Bind PDF document
sign.BindPdf(dataDir + "SignWithCertificate_out.pdf");
if (!sign.VerifySignature("Signature1"))
{
throw new Exception("Not verified");
}
}
}
Mais um novo recurso é a Escala de Página de Predefinições da Caixa de Diálogo de Impressão:
private static void SetPrintScaling()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdfFacades_Printing();
// Create PDF document
using (var document = new Aspose.Pdf.Document())
{
// Add page
document.Pages.Add();
// Disable print scaling
document.PrintScaling = PrintScaling.None;
// Save PDF document
document.Save(dataDir + "SetPrintScaling_out.pdf");
}
}
O que há de novo no Aspose.PDF 23.9
Desde 23.9, suporte para remover uma anotação filha de um campo preenchível.
private static void RemoveChildAnnotationFromFillableField()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_Forms();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "FieldWithChildAnnots.pdf"))
{
// Get field with child annotations
var field = (Aspose.Pdf.Forms.Field)document.Form["1 Vehicle Identification Number"];
// Get first child annotation
var annotation = field[1];
// Remove the annotation
document.Pages[annotation.PageIndex].Annotations.Remove(annotation);
// Save PDF document
document.Save(dataDir + "RemoveChildAnnotation_out.pdf");
}
}
O que há de novo no Aspose.PDF 23.8
Desde 23.8, suporte para adicionar detecção de Atualizações Incrementais.
A função para detectar Atualizações Incrementais em um documento PDF foi adicionada. Esta função retorna ’true’ se um documento foi salvo com atualizações incrementais; caso contrário, retorna ‘false’.
private static bool HasIncrementalUpdate()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_WorkingDocuments();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "PdfWithIncrementalUpdate.pdf"))
{
// New method
bool hasIncrementalUpdate = document.HasIncrementalUpdate();
Console.WriteLine("Document {0} incremental update check returns: {1}", document.FileName, hasIncrementalUpdate);
return hasIncrementalUpdate;
}
}
Além disso, 23.8 suporta maneiras de trabalhar com campos de caixa de seleção aninhados. Muitos formulários PDF preenchíveis têm campos de caixa de seleção que atuam como grupos de rádio:
- Criar campo de caixa de seleção de múltiplos valores:
private static void CreateMultivalueCheckboxField()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_Forms();
// Create PDF document
using (var document = new Aspose.Pdf.Document())
{
var page = document.Pages.Add();
var checkbox = new Aspose.Pdf.Forms.CheckboxField(page, new Aspose.Pdf.Rectangle(50, 50, 70, 70));
// Set the first checkbox group option value
checkbox.ExportValue = "option 1";
// Add new option right under existing ones
checkbox.AddOption("option 2");
// Add new option at the given rectangle
checkbox.AddOption("option 3", new Aspose.Pdf.Rectangle(100, 100, 120, 120));
document.Form.Add(checkbox);
// Select the added checkbox
checkbox.Value = "option 2";
// Save PDF document
document.Save(dataDir + "MultivalueCheckboxField.pdf");
}
}
- Obter e definir o valor de uma caixa de seleção de múltiplos valores:
private static void GetAndSetValueOfMultivalueCheckboxField()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_Forms();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "MultivalueCheckboxField.pdf"))
{
var form = document.Form;
var checkbox = form.Fields[0] as Aspose.Pdf.Forms.CheckboxField;
// Allowed values may be retrieved from the AllowedStates collection
// Set the checkbox value using Value property
checkbox.Value = checkbox.AllowedStates[0];
var checkboxValue = checkbox.Value; // the previously set value, e.g. "option 1"
// The value should be any element of AllowedStates
checkbox.Value = "option 2";
checkboxValue = checkbox.Value; // option 2
// Uncheck boxes by either setting Value to "Off" or setting Checked to false
checkbox.Value = "Off";
// or, alternately:
// checkbox.Checked = false;
checkboxValue = checkbox.Value; // Off
}
}
O que há de novo no Aspose.PDF 23.7
Desde Aspose.PDF 23.7, suporte para adicionar a extração de formas:
private static void CopyShape()
{
// The path to the document directory
var dataDir = RunExamples.GetDataDir_AsposePdf_Graphs();
// Open PDF document
using (var sourceDocument = new Aspose.Pdf.Document(dataDir + "test.pdf"))
{
// Create PDF document
using (var destDocument = new Aspose.Pdf.Document())
{
// Absorb vector graphics from the source document
var graphicAbsorber = new Aspose.Pdf.Vector.GraphicsAbsorber();
graphicAbsorber.Visit(sourceDocument.Pages[1]);
// Copy the graphics into the destination document specified page and area
var area = new Aspose.Pdf.Rectangle(90, 250, 300, 400);
destDocument.Pages[1].AddGraphics(graphicAbsorber.Elements, area);
// Save PDF document
destDocument.Save(dataDir + "CopyShape_out.pdf");
}
}
}
Além disso, suporta a capacidade de detectar Overflow ao adicionar texto:
private static void FitTextIntoRectangle()
{
// The path to the document directory
var dataDir = RunExamples.GetDataDir_AsposePdf_Text();
// Create PDF document
using (var document = new Aspose.Pdf.Document())
{
// Generate text to add: "Lorem Ipsum" text of 1000 characters
var paragraphContent = RunExamples.GetLoremIpsumString(1000);
// Create a text fragment with the desired text
var fragment = new Aspose.Pdf.Text.TextFragment(paragraphContent);
// Declare the rectangle to fit text into
var rectangle = new Aspose.Pdf.Rectangle(100, 600, 500, 700, false);
// Check whether the text fits into the rectangle
var isFitRectangle = fragment.TextState.IsFitRectangle(paragraphContent, rectangle);
// Iteratively decrease font size until text fits the rectangle
while (!isFitRectangle)
{
fragment.TextState.FontSize -= 0.5f;
isFitRectangle = fragment.TextState.IsFitRectangle(paragraphContent, rectangle);
}
// Create a paragraph from the text fragment in the specified rectangle. Now you may be sure it fits.
var paragraph = new Aspose.Pdf.Text.TextParagraph();
paragraph.VerticalAlignment = Aspose.Pdf.VerticalAlignment.Top;
paragraph.FormattingOptions.WrapMode = Aspose.Pdf.Text.TextFormattingOptions.WordWrapMode.ByWords;
paragraph.Rectangle = rectangle;
paragraph.AppendLine(fragment);
// Create a text builder to place the paragraph on the document page
var builder = new Aspose.Pdf.Text.TextBuilder(document.Pages.Add());
builder.AppendParagraph(paragraph);
// Save PDF document
document.Save(dataDir + "FitTextIntoRectangle_out.pdf");
}
}
O que há de novo no Aspose.PDF 23.6
Desde Aspose.PDF 23.6, suporte para adicionar os seguintes plugins:
- Aspose PdfConverter Html para PDF
- Aspose PdfOrganizer API de Redimensionamento
- Aspose PdfOrganizer API de Compressão
Atualize o Aspose.PdfForm
- adicione o recurso ‘Exportar “Valores dos campos no documento para arquivo CSV”
- adicione a capacidade de definir propriedades para campos separados
Além disso, suporte para adicionar a capacidade de definir o título da página HTML, Epub:
private static void SetHtmlTitle()
{
// 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"))
{
var options = new Aspose.Pdf.HtmlSaveOptions
{
ExplicitListOfSavedPages = new[] { 1 },
SplitIntoPages = false,
FixedLayout = true,
CompressSvgGraphicsIfAny = false,
SaveTransparentTexts = true,
SaveShadowedTextsAsTransparentTexts = true,
FontSavingMode = Aspose.Pdf.HtmlSaveOptions.FontSavingModes.AlwaysSaveAsWOFF,
RasterImagesSavingMode = Aspose.Pdf.HtmlSaveOptions.RasterImagesSavingModes.AsEmbeddedPartsOfPngPageBackground,
PartsEmbeddingMode = Aspose.Pdf.HtmlSaveOptions.PartsEmbeddingModes.EmbedAllIntoHtml,
// New property
Title = "Title for page"
};
// Save HTML document
document.Save(dataDir + "SetHtmlTitle_out.html", options);
}
}
O que há de novo no Aspose.PDF 23.5
Desde 23.5, suporte para adicionar a opção FontSize da RedactionAnnotation. Use o próximo trecho de código para resolver essa tarefa:
private static void AddRedactionAnnotationFontSize()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_Annotations();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "input.pdf"))
{
// Create RedactionAnnotation instance for specific page region
var annot = new Aspose.Pdf.Annotations.RedactionAnnotation(document.Pages[1],
new Aspose.Pdf.Rectangle(367, 756.919982910156, 420, 823.919982910156));
annot.FillColor = Aspose.Pdf.Color.Black;
annot.BorderColor = Aspose.Pdf.Color.Yellow;
annot.Color = Aspose.Pdf.Color.Blue;
// Text to be printed on redact annotation
annot.OverlayText = "(Unknown)";
annot.TextAlignment = Aspose.Pdf.HorizontalAlignment.Center;
// Repeat Overlay text over redact Annotation
annot.Repeat = false;
// New property
annot.FontSize = 20;
// Add annotation to annotations collection of first page
document.Pages[1].Annotations.Add(annot);
// Flattens annotation and redacts page contents (i.e. removes text and image under redacted annotation)
annot.Redact();
// Save PDF document
document.Save(dataDir + "AddRedactionAnnotationFontSize_out.pdf");
}
}
O que há de novo no Aspose.PDF 23.4
Aspose.PDF anunciou o lançamento do SDK .NET 7.
O que há de novo no Aspose.PDF 23.3.1
Desde Aspose.PDF 23.3, suporte para adicionar os seguintes plugins:
- Aspose.PdfForm
- Aspose.PdfConverter PDF para HTML
- Aspose.PdfConverter PDF para XLSX
- Aspose.PdfOrganizer Rotacionar
- Aspose.PdfExtractor para Imagens
O que há de novo no Aspose.PDF 23.3
A versão 23.3 introduziu suporte para manter as proporções e a resolução da imagem ao inserir na página. Dois métodos podem ser usados para resolver esse problema:
private static void InsertImageWithNativeResolutionAsTable()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_Images();
// Create PDF document
using (var document = new Aspose.Pdf.Document())
{
var page = document.Pages.Add();
var table = new Aspose.Pdf.Table
{
ColumnWidths = "600"
};
for (var j = 0; j < 2; j++)
{
var row = table.Rows.Add();
var cell = row.Cells.Add();
cell.Paragraphs.Add(new Aspose.Pdf.Image()
{
IsApplyResolution = true,
File = dataDir + "Image1.jpg"
});
}
page.Paragraphs.Add(table);
// Save PDF document
document.Save(dataDir + "ImageWithNativeResolutionAsTable_out.pdf");
}
}
E a segunda abordagem:
private static void InsertImageWithNativeResolutionAsParagraph()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_Images();
// Create PDF document
using (var document = new Aspose.Pdf.Document())
{
var page = document.Pages.Add();
for (var j = 0; j < 2; j++)
{
page.Paragraphs.Add(new Aspose.Pdf.Image()
{
IsApplyResolution = true,
File = dataDir + "Image1.jpg"
});
}
// Save PDF document
document.Save(dataDir + "ImageWithNativeResolutionAsParagraph_out.pdf");
}
}
A imagem será colocada em um tamanho escalonado e resolução nativa. Você pode definir propriedades FixedWidth ou FixedHeight em combinação com IsApplyResolution.
O que há de novo no Aspose.PDF 23.1.1
Desde Aspose.PDF 23.1.1, suporte para adicionar os seguintes plugins:
- Plugin Aspose.PdfOrganizer
- Plugin Aspose.PdfExtractor
O que há de novo no Aspose.PDF 23.1
Desde a versão 23.1, suporte para criar anotações PrinterMark.
As marcas do impressor são símbolos gráficos ou texto adicionados a uma página para ajudar o pessoal de produção a identificar componentes de um trabalho de múltiplas chapas e manter uma saída consistente durante a produção. Exemplos comumente usados na indústria de impressão incluem:
- Alvos de registro para alinhar chapas
- Rampas cinzas e barras de cores para medir cores e densidades de tinta
- Marcas de corte mostrando onde o meio de saída deve ser cortado
Mostraremos o exemplo da opção com barras de cores para medir cores e densidades de tinta. Existe uma classe abstrata básica PrinterMarkAnnotation e dela a classe filha ColorBarAnnotation - que já implementa essas faixas. Vamos verificar o exemplo:
private static void AddPrinterMarkAnnotation()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_Annotations();
// Create PDF document
using (var document = new Aspose.Pdf.Document())
{
var page = document.Pages.Add();
page.TrimBox = new Aspose.Pdf.Rectangle(20, 20, 580, 820);
var rectBlack = new Aspose.Pdf.Rectangle(100, 300, 300, 320);
var rectCyan = new Aspose.Pdf.Rectangle(200, 600, 260, 690);
var rectMagenta = new Aspose.Pdf.Rectangle(10, 650, 140, 670);
var colorBarBlack = new Aspose.Pdf.Annotations.ColorBarAnnotation(page, rectBlack);
var colorBarCyan = new Aspose.Pdf.Annotations.ColorBarAnnotation(page, rectCyan,
Aspose.Pdf.Annotations.ColorsOfCMYK.Cyan);
var colorBarMagenta = new Aspose.Pdf.Annotations.ColorBarAnnotation(page, rectMagenta);
colorBarMagenta.ColorOfCMYK = Aspose.Pdf.Annotations.ColorsOfCMYK.Magenta;
var colorBarYellow = new Aspose.Pdf.Annotations.ColorBarAnnotation(page,
new Aspose.Pdf.Rectangle(400, 250, 450, 700), Aspose.Pdf.Annotations.ColorsOfCMYK.Yellow);
page.Annotations.Add(colorBarBlack);
page.Annotations.Add(colorBarCyan);
page.Annotations.Add(colorBarMagenta);
page.Annotations.Add(colorBarYellow);
// Save PDF document
document.Save(dataDir + "PrinterMarkAnnotation_out.pdf");
}
}
Além disso, suporte para extração de imagens vetoriais. Tente usar o seguinte código para detectar e extrair gráficos vetoriais:
private static void SavePdfVectorGraphicToSvg()
{
// The path to the document directory
var dataDir = RunExamples.GetDataDir_AsposePdf_Graphs();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "test.pdf"))
{
// Attempt to save the vector graphics into a specified SVG file
document.Pages[1].TrySaveVectorGraphics(dataDir + "PdfVectorGraphicToSvg.svg");
}
}