86 lines
3.4 KiB
86 lines
3.4 KiB
# CharShift
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CharShift allows you to independently assign symbols to shifted and unshifted
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positions of keymap entries. Either or both symbols can be ones that normally
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requires the `shift` modifier, and either or both symbols can be ones normally
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produced without it.
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For example you can configure your keyboard so that a single key produces `,`
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when pressed unshifted, but `;` when pressed with `shift` held. Or `(`
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unshifted, and `[` shifted. Or `+`/`*` — all without changing your OS keyboard
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layout.
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## Using the plugin
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Using the plugin with its defaults is as simple as including the header, and
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enabling the plugin:
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```c++
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#include <Kaleidoscope.h>
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#include <Kaleidoscope-CharShift.h>
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KALEIDOSCOPE_INIT_PLUGINS(CharShift);
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```
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Further configuration is required, of course; see below.
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Note: CharShift should be registered in `KALEIDOSCOPE_INIT_PLUGINS()` after any
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plugin that changes the event's `Key` value to that of an CharShift key.
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## Configuring CharShift keys
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To use CharShift, we must first define `KeyPair` objects, which can then be
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referenced by entries in the keymap. This is easiest to do by using the
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`CS_KEYS()` preprocessor macro in the sketch's `setup()` function, as follows:
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```c++
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void setup() {
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Kaleidoscope.setup();
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CS_KEYS(
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kaleidoscope::plugin::CharShift::KeyPair(Key_Comma, Key_Semicolon), // `,`/`;`
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kaleidoscope::plugin::CharShift::KeyPair(Key_Period, LSHIFT(Key_Semicolon)), // `.`/`:`
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kaleidoscope::plugin::CharShift::KeyPair(LSHIFT(Key_9), Key_LeftBracket), // `(`/`[`
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kaleidoscope::plugin::CharShift::KeyPair(LSHIFT(Key_Comma), LSHIFT(Key_LeftBracket)), // `<`/`{`
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);
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}
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```
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The first argument to the `KeyPair()` constructor is the value for when the key is
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pressed without `shift` held, the second is what you'll get if a `shift`
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modifier is being held when the key toggles on. If that second ("upper") value
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doesn't have the `shift` modifier flag (i.e. `LSHIFT()`) applied to it, the held
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`shift` modifier will be suppressed when the key is pressed, allowing the
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"unshifted" symbol to be produced.
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These `KeyPair`s can be referred to in the sketch's keymap by using the `CS()`
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preprocessor macro, which takes an integer argument, referring to items in the
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`CS_KEYS()` array, starting with zero. With the example above, an entry of
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`CS(2)` will output `(` when pressed without `shift`, and `[` if `shift` is
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being held.
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## Adding CharShift keys in Chrysalis
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As of this writing, CharShift keys can't be defined in Chrysalis; they can only
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be defined in a custom sketch (see above). This doesn't mean that you can't use
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them in Chrysalis-defined keymaps, however. To add a CharShift key in
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Chrysalis, select `Custom key code`, and add the offset `53631` to the index number of the
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CharShift key.
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In other words, where you would use `CS(2)` in a Kaleidoscope sketch, you would
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need to use `53633` (`53631 + 2`) as the custom key code in Chrysalis. Any
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CharShift keys referenced in this way still need to be defined in a custom
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Kaleidoscope sketch (see above), but they can still be used in a Chrysalis
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keymap.
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In general, the formula for the Chrysalis custom key code corresponding to the
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CharShift key with index `N` is:
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`CS(N)` ⟹ `53631 + N`
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## Further reading
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Starting from the [example][plugin:example] is the recommended way of getting
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started with the plugin.
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[plugin:example]: /examples/Keystrokes/CharShift/CharShift.ino
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