Studying more of the dependencies for Papyrix's pivotal "Reader" view...
There's some support code which, for the most part, lightly wraps the renderers for Papyrix's general UI widgets to make them more specific to viewing pages of an ebook.
It has some logic for rendering a cover page by clearing the screen, getting dimensions, checks for cover data & its dimensions, if present computes scale-to-fit & renders the image, computes layout for title, ...
1/2?
... if there's a title renders soft-wrapped with hyphens & centered, if there's an author renders it centered, & flushes the display.
As for a jump-to-page view it renders a title & a page numbered, renders localized text stating max page number, renders a button bar, & flushes display. This doesn't seem complete, is it a wireframe?
There's also a wrapper here around the button bar, & another wrapper for rendering a hardcoded menu.
2/2 Fin for today!