- Add a link to PDF with an external destination
- Add a link with an internal destination to PDF
- Add a note to PDF
- Add barcodes to PDF
- Add bookmarks to PDF
- Add footer to PDF
- Add simple html text to PDF
- Add hyperlink to PDF
- Add multiline text to a PDF document
- Add a rubber stamp annotation with a custom icon
- Add single-line text to PDF
- Add Stamp to PDF
- Add text field to PDF
- Add a Diagonal Watermark to PDF in C# - TallComponents - PDF Library
- Append two or more existing PDF files
- Change the color inside a PDF
- Change the formatting of a numeric field
- Change page orientation PDF
- Clip PDF page content in C#
- Convert PDF to plain text
- Convert SVG to PDF
- Create a text annotation in PDF with rich text
- Create formfields in PDF documents
- Create layers in PDF and draw on each layer
- Create a new digitally signed PDF document
- Create rectangles with rounded corners
- Create text with decorations
- How to create a tiling for shapes in PDF
- Crop content on a PDF page
- Determine the content bounding box
- Determine if a PDF only contains images
- Digitally sign a PDF form in C# or VB.NET
- Disable submit button after submitting
- How to downscale all images in a PDF
- Download and convert image to PDF
- How to downscale all images in a PDF
- Vector graphics in PDF
- How to embed files in a PDF document
- Embed TrueType font in PDF
- EMF to PDF as raster image - Code Sample C#
- EMF to PDF as vector image
- Export FDF from PDF form
- Extract embedded files from PDF
- Extract glyph boxes from PDF
- Extract glyphs and sort by reading order
- Extract graphics from PDF
- Extract images from PDF
- Fill in a PDF form using MVC
- Fill in a template PDF document
- Fill PDF form
- Fit image to PDF page
- Flatten Markup Annotation
- Flatten PDF form
- How to generate and export certificates
- How do I extract page destinations from bookmarks?
- Highlight fields in PDF
- How do I create graphics with Icc based colors
- How to add autosized text to PDF
- How to sign and verify updates to a PDF document
- Import FDF into PDF
- Merge PDF files in C# .NET
- How to mirror PDF pages and other shapes
- Layout text with MultilineTextShape
- Read and write meta data from PDF
- How to reduce PDF file size
- Remove graphics from PDF
- Remove PDF security settings
- Replace field with image
- Resize PDF pages
- Rotate a PDF page
- How to scale content of PDF
- Search text in PDF
- PDF Viewer Preferences
- Create a custom signature handler to sign and verify PDF documents
- Split PDF pages in C# and VB.NET
- TIFF to PDF C#
- Translate PDF page content
- Use multiple licenses
- Use TrueType font collections
- Verify a custom digital PDF signature
Flatten Markup Annotation
This article illustrate how to turn markups to images by flatten markups.
Assume we have an existing PDF document with a highlight markup. When we add an image to it, we expect the image to be drawn on top of the markup because it is added later. Like this:
However, what really happens is that the image is drawn where it should be, but the markup is drawn over it in a PDF reader. Like this:
The reason is that, by design, annotations are drawn on top of the static graphics.
By flattening markups, they become part of the static context (and so no longer behave as markups) and then you can draw on top of them. The following code demonstrates this:
Document document = new Document(
new FileStream(@"markupFlattenExample.pdf", FileMode.Open, FileAccess.Read));
Page page = document.Pages[0];
// Unmark the following statements will flatten the first markup
// and remove it.
//page.Markups[0].Flatten(page.Overlay);
//page.Markups.RemoveAt(0);
ImageShape imageShape = new ImageShape("tallcomponents-logo.png");
imageShape.KeepAspectRatio = true;
imageShape.Height = 100;
imageShape.Transform = new TranslateTransform(80, 630);
document.Pages[0].Overlay.Add(imageShape);
using(FileStream fileOut = new FileStream(@"temp.pdf", FileMode.Create, FileAccess.Write))
{
document.Write(fileOut);
}
Process.Start("temp.pdf");
Dim document As New Document(New FileStream("..\..\markupFlattenExample.pdf", FileMode.Open, FileAccess.Read))
Dim page As Page = document.Pages(0)
' Unmark the following statements will flatten the first markup
' and remove it.
'page.Markups[0].Flatten(page.Overlay);
'page.Markups.RemoveAt(0);
Dim imageShape As New ImageShape("..\..\tallcomponents-logo.png")
imageShape.KeepAspectRatio = True
imageShape.Height = 100
imageShape.Transform = New TranslateTransform(80, 630)
document.Pages(0).Overlay.Add(imageShape)
Using fileOut As New FileStream("..\..\temp.pdf", FileMode.Create, FileAccess.Write)
document.Write(fileOut)
End Using