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Kaleidoscope/README.md

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# Akela-TopsyTurvy
![status][st:experimental]
[st:stable]: https://img.shields.io/badge/stable-✔-black.png?style=flat&colorA=44cc11&colorB=494e52
[st:broken]: https://img.shields.io/badge/broken-X-black.png?style=flat&colorA=e05d44&colorB=494e52
[st:experimental]: https://img.shields.io/badge/experimental----black.png?style=flat&colorA=dfb317&colorB=494e52
`TopsyTurvy` is a plugin that inverts the behaviour of the `Shift` key for some
selected keys. That is, if configured so, it will input `!` when pressing the
`1` key without `Shift`, but with the modifier pressed, it will input the
original `1` symbol.
## Using the plugin
To use the plugin, one needs to include the header, create a list, and configure
the provided `TopsyTurvy` object to use the dictionary:
```c++
#include <Akela-TopsyTurvy.h>
static const Key topsyTurvyList[] PROGMEM = {
Key_1, Key_2, Key_3, Key_4, Key_5,
Key_6, Key_7, Key_8, Key_9, Key_0,
Key_NoKey
};
void setup () {
TopsyTurvy.configure (topsyTurvyList);
Keyboardio.setup (KEYMAP_SIZE);
Keyboardio.use (&TopsyTurvy, NULL);
}
```
The list of keys **must** be terminated with a `Key_NoKey`, and **must** reside
in `PROGMEM`.
## Plugin methods
The plugin provides the `TopsyTurvy` object, with the following methods:
### `.configure(list)`
> Tells `TopsyTurvy` to use the specified list of keys.
### `.on()`
> Turns the shift-inversion functionality on.
### `.off()`
> Turns the shift-inversion functionality off. In this case, no transformations
> will be applied, and even if keys pressed appear in the list, they will be
> ignored until the plugin is turned back on.
## Further reading
Starting from the [example][plugin:example] is the recommended way of getting
started with the plugin.
[plugin:example]: https://github.com/keyboardio/Akela-TopsyTurvy/blob/master/examples/TopsyTurvy/TopsyTurvy.ino