Layout customisation

[toasterofbread]

I've been thinking about the possibility of expanding the app's customisation options, mainly around changing how the player and main page bars are laid out.
Everything in this issue is specific to the portrait layout. These are just my initial thoughts on the idea, so feel free to discuss other ideas in this issue.

Page layout

The main app layout will be split into four re-orderable and customisable rows:

• A: top bar, where the lyrics currently are
• B: top bar, where song filters currently are
• C: above the mini player
• D: below the mini player

Several pages already follow this layout. Each page has at most two rows of its own content:

• Song feed: mood filter row
• Library: page selector row
• Search page: search filter row & search bar row

Customisation

The user has four row slots available (A, B, C, D) to customise.
Two must be selected to display page content (as listed above), but the other two can display custom rows configured by the user.

Custom rows:

Rows can have large-form content displayed in the center, including lyrics and feed filters.

If a row is configured to have no center content, it can be filled with any number of center-aligned evenly-spaced buttons:

• Settings
• Library
• Search
• Radio builder
• Etc.

If a row does have center content, it can still be given any number of buttons, but they are split between left and right (the user places each button onto the side of their choice).