TOC with page numbers

[kohheepeace]

I have no clean idea.

ref: https://medium.com/@pofider/generate-pdf-with-toc-using-chrome-c3b44f924ff9

[pkowaluk]

Hey, @kohheepeace , do you mind if I pick this one up? We would like to use Mr. PDF in our project and a TOC with page numbers would be great.

Do you have any contributing guidelines in mind, or can I just fork and propose a PR?

[josefloidolt]

I don't have the prettiest solution, but it worked for me.
I added the TOC with page numbers like this:

1. You have to generate the pdf with the TOC (without page numbers)
2. You read out the metadata of the pdf
3. Now you can filter out the headings by the font size and you also get the page number (where the heading is placed)
4. You store each (heading/page number) pair in a Map
5. Now you have to generate the pdf once again in order to add the page numbers to the table of contents
6. You have your finished pdf

Note: if your pdf contains a long heading you have to take that into account when adding the page numbers to the TOC. You may have to merge the map entries so that the headings match.

I hope this solution was helpful. :)