[Discussion] Legacy: 5 main keys with other keys largely unused #4
Description
ZPUI was designed for as less keys as possible, and back when developing it I decided that 5 keys should be enough for basic interfacing needs, and so I rarely used more than that, there were other keys available but I didn't have a good purpose for them at that time. The 5 keys are UP, DOWN, LEFT, RIGHT and ENTER - on default ZeroPhone keypad board, they form a cross in the upper center, it's easy to spot them.
The problem is - right now, there are some other keys that aren't used, even though in many places they are the intuitive choice. For example, C1 and C2 (top left and top right corners) could easily be used for "Back" and "Options" choices in menus - but that's not yet the case. Fixing this is not as simple as updating the mapping because, for example, in case of C1 and C2 keys being used there should also be a lower bar on the display that'd have labels with C1 and C2 key purposes. This issue is about developing an interface for C1 and C2 button usage, that'd include a lower bar for the display, as well as could be integrated with current UI elements.