To add a watermark to a PDF file the Cmdlet Add-WaterMark contained in the attached module can be used.
Module installation:
- Download the attached ZIP file containing the module
- Depending on your security policies you may have to unblock (How to unblock files) the archive after downloading it
- Extract all files and folders from the archive
- Copy the extracted files and folders to the powerJob's module directory. The default path is "C:\ProgramData\coolOrange\powerJobs\Modules"
Examples
Adding a text watermark to a PDF file:
This example adds the word "sampletext" as a watermark to a locally saved PDF file.
try{
Add-WaterMark -Path "C:\Temp\myPDF.pdf" -WaterMark "sampletext"
} catch [System.Exception] {
throw($error[0])
}
Adding the current state of a file as a watermark to the PDF file:
This example adds the lifecycle state of the file (assuming the file takes part in a lifecycle) as a watermark to the PDF file.
try{
if ($file._State -ne $null) {
Add-WaterMark -Path "C:\Temp\myPDF.pdf" -WaterMark "$($file._State)"
}
}catch [System.Exception] {
throw($error[0])
}
The following sample job adds a customized watermark to a PDF file:
The settings where the PDF files should be saved as well as the watermark settings can be found in the "settings" region of the job
#region Settings
#change this setting to $true or $false for showing/hiding the PDF
$hidePDF = $false
$workingDirectory = "C:\Temp\$($file._Name)"
#Watermark
$waterMark = "sample text"
$Color = "Red"
$Font = "Arial"
$FontSize = 26
#Left, Center or Right
$HorizontalAlignment = "Right"
#Top, Middle or Bottom
$VerticalAlignment = "Top"
#Between 0 and 100
$Opacity = 50
$OffsetX = -2
$OffsetY = 2
$Angle = 0
#endregion
Write-Host "Starting job 'Sample.AddWatermarkToPDF' for file '$($file._Name)' ..."
if( @("pdf") -notcontains $file._Extension ) {
Write-Host "Files with extension: '$($file._Extension)' are not supported"
return
}
# Preloading the modules is required as PDFsharp 6.1.1 attempts to load the .NET stanard version of System.Runtime.CompilerServices.Unsafe.dll, wich causes errors in .NET Framework. v4 directory contains .NET Framework version of System.Runtime.CompilerServices.Unsafe.dll
Get-ChildItem -LiteralPath "$env:POWERJOBS_MODULESDIR\PDFWatermark" -Filter '*.dll' -Recurse | ForEach-Object {
$null = [System.Reflection.Assembly]::LoadFile($_.FullName)
}
Import-Module ("$env:POWERJOBS_MODULESDIR\PDFWatermark\coolOrange.Pdf.WaterMark.dll")
$downloadedFiles = Save-VaultFile -File $file._FullPath -DownloadDirectory $workingDirectory -ExcludeChildren:$false -ExcludeLibraryContents:$false
$file = $downloadedFiles | select -First 1
if((Get-ChildItem $file.LocalPath).IsReadonly) {
Write-Host "Following file is read only: '$($file._Name)'."
Set-ItemProperty $file.LocalPath -name IsReadOnly -value $false
Write-Host "Set read-only flag to false for $($file._Name)."
}
try{
Add-WaterMark -Path $file.LocalPath -WaterMark $waterMark -Angle $Angle -HorizontalAlignment $HorizontalAlignment -VerticalAlignment $VerticalAlignment -Color $Color -Opacity $Opacity -Font $Font -FontSize $FontSize -OffSetX $OffsetX -OffSetY $OffsetY
} catch [System.Exception]{
throw($error[0])
}
#Clean-Up $workingDirectory
Write-Host "Job 'Sample.AddWatermarkToPDF' completed"
- Due to an issue with .NET Standard libraries that are used by PDFsharp 6.1.1 it is necessary to preload the libraries. The watermarking tool contains a .NET Framework version of System.Runtime.CompilerServices.Unsafe.dll that fixes that issue
- Define the download location and settings for the watermark
- Check if the current file is a PDF file
- Download the file from Vault and set the 'isReadOnly' property to false if it is set
- Add the watermark to the downloaded PDF file
Remarks
- The -Path parameter for the Add-WaterMark cmdlet has to be an absolute path to the PDF file.
- The attached module uses the 1.50beta version of PDFsharp (Project homepage)
- This was tested with version 1.50beta of PDFsharp (attached)