# `Mob.Theme.Adaptive`
[🔗](https://github.com/genericjam/mob/blob/master/lib/mob/theme/adaptive.ex#L1)

Theme that follows the OS-level light / dark setting.

At call time `theme/0` reads `Mob.Theme.color_scheme/0` and returns
`Mob.Theme.Light.theme/0` or `Mob.Theme.Dark.theme/0`. Built for
outdoor working users — sun-readable in daytime, eye-friendly at night.

## Usage

    defmodule MyApp do
      use Mob.App, theme: Mob.Theme.Adaptive
    end

## Reactive switching

`Mob.Theme.AdaptiveWatcher` (started by `use Mob.App`) calls
`Mob.Theme.set(Mob.Theme.Adaptive)` again whenever the OS appearance
flips, as long as the active theme was set from this module. Setting a
fixed theme afterwards (another module, a struct, a keyword list) stops
that until `Mob.Theme.Adaptive` is set again.

The renderer reads the active theme on each render, so a screen that is
already showing repaints in the new theme on its next render; the
watcher does not re-render screens itself.

# `theme`

```elixir
@spec theme() :: Mob.Theme.t()
```

Returns the Light or Dark theme struct based on the current OS appearance.

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*Consult [api-reference.md](api-reference.md) for complete listing*