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Anotasi Caret adalah simbol yang menunjukkan pengeditan teks. Anotasi Caret juga merupakan anotasi markup, sehingga kelas Caret diturunkan dari kelas Markup dan juga menyediakan fungsi untuk mendapatkan atau mengatur properti Anotasi Caret dan mengatur ulang aliran tampilan Anotasi Caret.
Potongan kode berikut juga bekerja dengan pustaka Aspose.PDF.Drawing.
Langkah-langkah untuk membuat anotasi Caret:
Potongan kode berikut menunjukkan cara menambahkan Anotasi Caret ke file PDF:
// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void AddCaretAnnotations()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_Annotations();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "sample.pdf"))
{
// Create Caret Annotation for text insertion
var caretAnnotation1 = new Aspose.Pdf.Annotations.CaretAnnotation(document.Pages[1], new Aspose.Pdf.Rectangle(299.988, 713.664, 308.708, 720.769))
{
Title = "Aspose User",
Subject = "Inserted text 1",
Flags = Aspose.Pdf.Annotations.AnnotationFlags.Print,
Color = Aspose.Pdf.Color.Blue
};
// Create Caret Annotation for text replacement
var caretAnnotation2 = new Aspose.Pdf.Annotations.CaretAnnotation(document.Pages[1], new Aspose.Pdf.Rectangle(361.246, 727.908, 370.081, 735.107))
{
Flags = Aspose.Pdf.Annotations.AnnotationFlags.Print,
Subject = "Inserted text 2",
Title = "Aspose User",
Color = Aspose.Pdf.Color.Blue
};
// Create StrikeOut Annotation
var strikeOutAnnotation = new Aspose.Pdf.Annotations.StrikeOutAnnotation(document.Pages[1],
new Rectangle(318.407, 727.826, 368.916, 740.098))
{
Color = Aspose.Pdf.Color.Blue,
QuadPoints = new[] {
new Point(321.66, 739.416),
new Point(365.664, 739.416),
new Point(321.66, 728.508),
new Point(365.664, 728.508)
},
Subject = "Cross-out",
InReplyTo = caretAnnotation2,
ReplyType = Aspose.Pdf.Annotations.ReplyType.Group
};
document.Pages[1].Annotations.Add(caretAnnotation1);
document.Pages[1].Annotations.Add(caretAnnotation2);
document.Pages[1].Annotations.Add(strikeOutAnnotation);
// Save PDF document
document.Save(dataDir + "AddCaretAnnotations_out.pdf");
}
}
Silakan coba menggunakan potongan kode berikut untuk Mendapatkan Anotasi Caret dalam dokumen PDF:
// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void GetCaretAnnotation()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_Annotations();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "sample_caret.pdf"))
{
// Get Caret annotations from the first page
var caretAnnotations = document.Pages[1].Annotations
.Where(a => a.AnnotationType == Aspose.Pdf.Annotations.AnnotationType.Caret)
.Cast<Aspose.Pdf.Annotations.CaretAnnotation>();
// Iterate through the annotations and print their details
foreach (var ca in caretAnnotations)
{
Console.WriteLine($"{ca.Rect}");
}
}
}
Potongan kode berikut menunjukkan cara Menghapus Anotasi Caret dari file PDF.
// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void DeleteCaretAnnotation()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_Annotations();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "sample_caret.pdf"))
{
// Get Caret annotations from the first page
var caretAnnotations = document.Pages[1].Annotations
.Where(a => a.AnnotationType == Aspose.Pdf.Annotations.AnnotationType.Caret)
.Cast<Aspose.Pdf.Annotations.CaretAnnotation>();
// Delete each Caret annotation
foreach (var ca in caretAnnotations)
{
document.Pages[1].Annotations.Delete(ca);
}
// Save PDF document after deleting annotations
document.Save(dataDir + "DeleteCaretAnnotation_out.pdf");
}
}
Aspose.PDF for .NET mendukung fitur untuk menambahkan serta memanipulasi Anotasi dalam file PDF yang ada. Baru-baru ini beberapa pelanggan kami mengajukan permintaan untuk meredaksi (menghapus teks, gambar, dll elemen dari) wilayah halaman tertentu dari dokumen PDF. Untuk memenuhi permintaan ini, sebuah kelas bernama RedactionAnnotation disediakan, yang dapat digunakan untuk meredaksi wilayah halaman tertentu atau dapat digunakan untuk memanipulasi RedactionAnnotations yang ada dan meredaksinya (yaitu, meratakan anotasi dan menghapus teks di bawahnya).
// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void RedactPage()
{
// 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 a specific page region
var annot = new Aspose.Pdf.Annotations.RedactionAnnotation(document.Pages[1], new Aspose.Pdf.Rectangle(200, 500, 300, 600));
annot.FillColor = Aspose.Pdf.Color.Green;
annot.BorderColor = Aspose.Pdf.Color.Yellow;
annot.Color = Aspose.Pdf.Color.Blue;
// Text to be printed on the redact annotation
annot.OverlayText = "REDACTED";
annot.TextAlignment = Aspose.Pdf.HorizontalAlignment.Center;
// Repeat Overlay text over the redact Annotation
annot.Repeat = true;
// Add annotation to the annotations collection of the first page
document.Pages[1].Annotations.Add(annot);
// Flattens annotation and redacts page contents (i.e., removes text and image under the redacted annotation)
annot.Redact();
// Save the result document
document.Save(dataDir + "RedactPage_out.pdf");
}
}
Namespace Aspose.Pdf.Facades juga memiliki kelas bernama PdfAnnotationEditor yang menyediakan fitur untuk memanipulasi Anotasi yang ada di dalam file PDF. Kelas ini berisi metode bernama RedactArea(..) yang menyediakan kemampuan untuk menghapus wilayah halaman tertentu.
// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void RedactPageWithFacadesApproach()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_Annotations();
// Create an instance of PdfAnnotationEditor
using (var editor = new Aspose.Pdf.Facades.PdfAnnotationEditor())
{
// Redact a specific page region
editor.RedactArea(1, new Aspose.Pdf.Rectangle(100, 100, 20, 70), System.Drawing.Color.White);
// Bind PDF document
editor.BindPdf(dataDir + "input.pdf");
// Save the result document
editor.Save(dataDir + "FacadesApproach_out.pdf");
}
}
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