thank you for that "form"-hint. that was what i needed. i finally assembled a script which does perfectly
what i wanted to achieve:
i know that the string concatenation ($string) is a bit clumsy, but i wanted to add the comments. you cannot have comments in quotes, can you?
# specify files
my $ifile = "c:/kopie/anlage-h-beg.pdf";
my $ofile = "c:/kopie/new.pdf";
#find out number of pages
my $ipdf = PDF::API2->open($ifile);
my $nop = $ipdf->pages;
#set outfile for PDF::Reuse
my $intName = prFont("Helvetica");
# assemble watermark text
my $string =
# save graphic state
# Begin Text
# set font and "size"
"/$intName 1 Tf\n" .
# set a text matrix
# 1. width of text
# 2. rotation angle (counterclockwise)
# 3. inclination (clockwise)
# 4. height of text
# 5. position x (0=left)
# 6. position y (0=bottom)
"180 60 -60 180 100 185 Tm\n" .
#set rgb-color (values between 0 and 1)
#"1 0 0 rg" .
#set grayscale (white=1 black=0)
"0.9 g\n" .
# show text
"(Kopie) Tj\n" .
# End Text
#loop over pages
for (my $i=1;$i<=$nop;$i++)
#add original content
my $internalName = prForm
file => $ifile,
page => $i,
effect => 'print',
tolerant => 'no'
#save and close
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