AutoIt Requires Chilkat v11.7.0+

Tile a Watermark Across a PDF Page

See more PDF Watermark Examples

Demonstrates a tiled watermark, which repeats the stamp over the whole page instead of placing it once. Tiling overrides position.align; tile.spacingX and spacingY set the gaps, and tile.stagger offsets alternate rows by half a tile so the pattern does not line up in columns. A faint tiled stamp carrying the name or address is the usual way to mark a document so that a leaked copy can be traced back, and zOrder back keeps it behind the text where it does not hinder reading. AutoIt

Local $bSuccess = False

;  This example requires the Chilkat API to have been previously unlocked.
;  See Global Unlock Sample for sample code.

;  The PDF used in this example is available at long_report.pdf

$oPdf = ObjCreate("Chilkat.Pdf")
$bSuccess = $oPdf.LoadFile("qa_data/pdf/long_report.pdf")
If ($bSuccess = False) Then
    ConsoleWrite($oPdf.LastErrorText & @CRLF)
    Exit
EndIf

$oJson = ObjCreate("Chilkat.JsonObject")
$oJson.UpdateString("type","text")

;  {date:FORMAT} is replaced per page when the watermark is added.  The other placeholders are
;  {page}, {pages} and {filename}; {{ gives a literal brace.
$oJson.UpdateString("text","jdoe@example.com  {date:yyyy-MM-dd}")
$oJson.UpdateString("id","trace")
$oJson.UpdateString("zOrder","back")
$oJson.UpdateNumber("font.size","14")
$oJson.UpdateNumber("opacity","0.15")
$oJson.UpdateNumber("rotation","30")

$oJson.UpdateBool("tile.enabled",True)
$oJson.UpdateNumber("tile.spacingX","60")
$oJson.UpdateNumber("tile.spacingY","80")
$oJson.UpdateBool("tile.stagger",True)

$oJsonOut = ObjCreate("Chilkat.JsonObject")
$bSuccess = $oPdf.Watermark("add",$oJson,$oJsonOut)
If ($bSuccess = False) Then
    ConsoleWrite($oPdf.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("id: " & $oJsonOut.StringOf("id") & " pages: " & $oJsonOut.StringOf("pages") & @CRLF)

$bSuccess = $oPdf.WriteFile("qa_output/report_traced.pdf")
If ($bSuccess = False) Then
    ConsoleWrite($oPdf.LastErrorText & @CRLF)
    Exit
EndIf

;  Sample output:

;  id: trace pages: 1-3