The Kotlin built-in `use` extension function applies to `AutoCloseable` only, and throws an error if the object it's being called on is not an `AutoCloseable`. This causes `OnScreenView` to fail to inflate on SDK < 31 as it retrieved the current theme primary color with a `TypedArray`, which only implements `AutoCloseable` since SDK 31 (Android 12).
The AndroidX core library provides a `use` extension function that applies to `TypeArray` instead of `AutoCloseable` so the fix is just a simple import.
Stick regions extend the activation area of the sticks to rectangles covering the corresponding half of the screen.
E.g. for the left stick: when any point of the left side of the screen is touched, the stick is repositioned there, and acts as if it was centered in the touched position. When the finger is lifter, the stick is hidden.
When toggle mode is enabled, the button will toggle between the `Pressed` and `Released` state when it's pressed.
Without toggle mode:
ACTION_DOWN -> Pressed
ACTION_UP -> Released
ACTION_DOWN -> Pressed
ACTION_UP -> Released
With toggle mode:
ACTION_DOWN -> Pressed
ACTION_UP -> No event
ACTION_DOWN -> No event
ACTION_UP -> Released
A combination of factors caused inconsistent button movements when using the arrow buttons to move it, namely floating point approximation and the round down performed when snapping a button to the grid. Sometimes the layman solution is the best one: adding/subtracting one to the move amount depending on the direction ensures that the button always ends up on a grid line.
An unusual big commit, unfortunately needed because none of these changes would make sense nor work individual. A quick list of what have been done follows.
* Introduced a control panel to control buttons replacing the FAB bar
* `ConfigurableButton` and `OnScreenConfiguration` interfaces have been introduced to allow for easier proxying of actions when applying the same changes to all buttons
* Button resize logic has been stripped from the buttons in favor of the new sliders
* General cleanup and renaming of various methods to better reflect their functionality
