How to annotate PDF file?
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Here is an example that shows how to load PDF document, annotate it, save annotated document to new PDF document:
private static void AnnotatePdfUsingTemporaryFile()
{
// create image collection
Vintasoft.Imaging.ImageCollection images = new Vintasoft.Imaging.ImageCollection();
// create annotation controller associated with image collection
Vintasoft.Imaging.Annotation.AnnotationDataController annotations =
new Vintasoft.Imaging.Annotation.AnnotationDataController(images);
// load PDF file into collection
images.Add("sourcePdfDocument.pdf");
// get the annotation collection for selected image
Vintasoft.Imaging.Annotation.AnnotationDataCollection imageAnnotations = annotations[images.Count - 1];
// create new annotation
Vintasoft.Imaging.Annotation.RectangleAnnotationData anno =
new Vintasoft.Imaging.Annotation.RectangleAnnotationData();
anno.Size = new System.Drawing.SizeF(300, 300);
anno.FillBrush = new Vintasoft.Imaging.Annotation.AnnotationSolidBrush(System.Drawing.Color.AliceBlue);
anno.Location = new System.Drawing.PointF(0, 0);
// add new annotation into annotation collection
imageAnnotations.Add(anno);
Vintasoft.Imaging.Codecs.Encoders.PdfEncoder encoder =
new Vintasoft.Imaging.Codecs.Encoders.PdfEncoder();
// specify that annotations must be saved with image collection
encoder.AnnotationsFormat = Vintasoft.Imaging.AnnotationsFormat.VintasoftBinary;
// save image collection synchronously to new file
images.SaveSync("destPdfDocument.pdf", encoder);
}
Private Shared Sub AnnotatePdfUsingTemporaryFile()
' create image collection
Dim images As New Vintasoft.Imaging.ImageCollection()
' create annotation controller associated with image collection
Dim annotations As New Vintasoft.Imaging.Annotation.AnnotationDataController(images)
' load PDF file into collection
images.Add("sourcePdfDocument.pdf")
' get the annotation collection for selected image
Dim imageAnnotations As Vintasoft.Imaging.Annotation.AnnotationDataCollection = annotations(images.Count - 1)
' create new annotation
Dim anno As New Vintasoft.Imaging.Annotation.RectangleAnnotationData()
anno.Size = New System.Drawing.SizeF(300, 300)
anno.FillBrush = New Vintasoft.Imaging.Annotation.AnnotationSolidBrush(System.Drawing.Color.AliceBlue)
anno.Location = New System.Drawing.PointF(0, 0)
' add new annotation into annotation collection
imageAnnotations.Add(anno)
Dim encoder As New Vintasoft.Imaging.Codecs.Encoders.PdfEncoder()
' specify that annotations must be saved with image collection
encoder.AnnotationsFormat = Vintasoft.Imaging.AnnotationsFormat.VintasoftBinary
' save image collection synchronously to new file
images.SaveSync("destPdfDocument.pdf", encoder)
End Sub
Here is an example that shows how to load PDF document, annotate it, save changes back to PDF document.
Temporary file is not used.
private static void AnnotatePdfWithoutUsingTemporaryFile()
{
// open stream of the PDF document
System.IO.FileStream stream = new System.IO.FileStream(
"sourcePdfDocument.pdf", System.IO.FileMode.Open);
// create image collection
Vintasoft.Imaging.ImageCollection images = new Vintasoft.Imaging.ImageCollection();
// create annotation controller associated with image collection
Vintasoft.Imaging.Annotation.AnnotationDataController annotations =
new Vintasoft.Imaging.Annotation.AnnotationDataController(images);
// add images (pages of PDF document) from the stream to the image collection
images.Add(stream);
// get annotation collection for selected image
Vintasoft.Imaging.Annotation.AnnotationDataCollection imageAnnotations = annotations[images.Count - 1];
// create new annotation
Vintasoft.Imaging.Annotation.RectangleAnnotationData anno =
new Vintasoft.Imaging.Annotation.RectangleAnnotationData();
anno.Size = new System.Drawing.SizeF(300, 300);
anno.FillBrush = new Vintasoft.Imaging.Annotation.AnnotationSolidBrush(System.Drawing.Color.AliceBlue);
anno.Location = new System.Drawing.PointF(0, 0);
// add new annotation into annotation collection
imageAnnotations.Add(anno);
Vintasoft.Imaging.Codecs.Encoders.PdfEncoder encoder =
new Vintasoft.Imaging.Codecs.Encoders.PdfEncoder();
// specify that annotations must be saved with image collection
encoder.AnnotationsFormat = Vintasoft.Imaging.AnnotationsFormat.VintasoftBinary;
// specify that image collection must be saved to the source stream
encoder.SaveAndSwitchSource = true;
// save image collection synchronously to the source stream (save changes in PDF document)
images.SaveSync(stream, encoder);
// close the stream of PDF document
stream.Close();
}
Private Shared Sub AnnotatePdfWithoutUsingTemporaryFile()
' open stream of the PDF document
Dim stream As New System.IO.FileStream("sourcePdfDocument.pdf", System.IO.FileMode.Open)
' create image collection
Dim images As New Vintasoft.Imaging.ImageCollection()
' create annotation controller associated with image collection
Dim annotations As New Vintasoft.Imaging.Annotation.AnnotationDataController(images)
' add images (pages of PDF document) from the stream to the image collection
images.Add(stream)
' get annotation collection for selected image
Dim imageAnnotations As Vintasoft.Imaging.Annotation.AnnotationDataCollection = annotations(images.Count - 1)
' create new annotation
Dim anno As New Vintasoft.Imaging.Annotation.RectangleAnnotationData()
anno.Size = New System.Drawing.SizeF(300, 300)
anno.FillBrush = New Vintasoft.Imaging.Annotation.AnnotationSolidBrush(System.Drawing.Color.AliceBlue)
anno.Location = New System.Drawing.PointF(0, 0)
' add new annotation into annotation collection
imageAnnotations.Add(anno)
Dim encoder As New Vintasoft.Imaging.Codecs.Encoders.PdfEncoder()
' specify that annotations must be saved with image collection
encoder.AnnotationsFormat = Vintasoft.Imaging.AnnotationsFormat.VintasoftBinary
' specify that image collection must be saved to the source stream
encoder.SaveAndSwitchSource = True
' save image collection synchronously to the source stream (save changes in PDF document)
images.SaveSync(stream, encoder)
' close the stream of PDF document
stream.Close()
End Sub