cli: image watermark panics

[lhq0826]

$ pdfcpu watermark add -mode image 'draft_icon.png' 'rotation:-30, scalefactor:1 abs' test.pdf 456.pdf
writing 456.pdf...
pages: all
unexpected panic attack: interface conversion: color.Color is color.NRGBA, not color.RGBA

Linux 42ded2a8723f 4.19.76-linuxkit #1 SMP Tue May 26 11:42:35 UTC 2020 x86_64 GNU/Linux

-rw-r--r-- 1 root root 135K Sep 9 10:30 draft_icon.png

[hhrutter]

Hi!

Thanks for reporting this!

Unfortunately without a stack trace this is going to be difficult to debug.

If you can share a sample file that reproduces this we can fix this.
Either post here or send me an email: hhrutter@gmail.com

Thank you for using pdfcpu 💚

[shvc]

• version: Linux x86_64

./pdfcpu version
pdfcpu: 0.3.5
build : 2020-08-30T22:40:02Z
commit: 6faa4ad

• watermark image

http://nginx.org/nginx.png

• pdf file

http://africau.edu/images/default/sample.pdf

• error command

./pdfcpu watermark add -mode image 'nginx.png' 'rotation:-30, scalefactor:1 abs' sample.pdf
writing sample.pdf...
pages: all
unexpected panic attack: interface conversion: color.Color is color.NRGBA, not color.RGBA

[hhrutter]

Thanks I take a look!

[hhrutter]

Fixed with latest commit!