Feature Request: Option to disable base layer initialization

[mlilienberg]

I want to request an enhancement. I am using this library to display PDFs rendered via android.graphics.pdf.PdfRenderer. This works great out of the box, but when I open big pdfs that result in full size images of a million pixels in height it does not work that good anymore. I copied this library and added the option to disable base layer loading. With that disabled, I even can open pdfs of 1000 pages in a few milliseconds. I can imagine that disabling base layer tiles could be useful in other usecases too, like rendering maps or other type of documents.

I could create a Pull Request with my changes but I found this library just today and I am not sure what side effects my changes might have or if this is more seen as missuse of this library.

[avegrv]

@davemorrissey What about this feature? Can I implement pdf rendering functionality?