158 lines
5.8 KiB
158 lines
5.8 KiB
# SpaceCadet
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[Space Cadet][space-cadet] is a way to make it more convenient to input
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parens - those `(` and `)` things -, symbols that a lot of programming languages
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use frequently. If you are working with Lisp, you are using these all the time.
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What it does, is that it turns your left and right `Shift` keys into parens if
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you tap and release them, without pressing any other key while holding them.
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Therefore, to input, say, `(print foo)`, you don't need to press `Shift`, hold
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it, and press `9` to get a `(`, you simply press and release `Shift`, and
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continue writing. You use it as if you had a dedicated key for parens!
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But if you wish to write capital letters, you hold it, as usual, and you will
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not see any parens when you release it. You can also hold it for a longer time,
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and it still would act as a `Shift`, without the parens inserted on release:
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this is useful when you want to augment some mouse action with `Shift`, to
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select text, for example.
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After getting used to the Space Cadet style of typing, you may wish to enable
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this sort of functionality on other keys, as well. Fortunately, the Space Cadet
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plugin is configurable and extensible to support adding symbols to other keys.
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Along with `(` on your left `Shift` key and `)` on your right `Shift` key,
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you may wish to add other such programming mainstays as `{` to your left-side `cmd` key,
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`}` to your right-side `alt` key, `[` to your left `Control` key, and `]` to your right
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`Control` key. You can map the keys in whatever way you may wish to do, so feel free to
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experiment with different combinations and discover what works best for you!
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[space-cadet]: https://en.wikipedia.org/wiki/Space-cadet_keyboard
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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-SpaceCadet.h>
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KALEIDOSCOPE_INIT_PLUGINS(SpaceCadet);
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void setup() {
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Kaleidoscope.setup();
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}
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```
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This assumes a US QWERTY layout on the host computer, though the plugin sends
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the correct keymap code for each symbol. Because the mapping is entirely
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configurable, though, you may switch out keys at your leisure.
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If you wish to enable additional modifier keys (or disable the default behavior
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for the shift and parentheses combinations), configuration is as simple as
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passing a new keymap into the SpaceCadet object, as shown below:
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```c++
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#include <Kaleidoscope.h>
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#include <Kaleidoscope-SpaceCadet.h>
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KALEIDOSCOPE_INIT_PLUGINS(SpaceCadet);
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void setup() {
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Kaleidoscope.setup();
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//Set the keymap with a 250ms timeout per-key
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//Setting is {KeyThatWasPressed, AlternativeKeyToSend, TimeoutInMS}
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//Note: must end with the SPACECADET_MAP_END delimiter
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static kaleidoscope::plugin::SpaceCadet::KeyBinding spacecadetmap[] = {
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{Key_LeftShift, Key_LeftParen, 250}
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, {Key_RightShift, Key_RightParen, 250}
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, {Key_LeftGui, Key_LeftCurlyBracket, 250}
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, {Key_RightAlt, Key_RightCurlyBracket, 250}
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, {Key_LeftAlt, Key_RightCurlyBracket, 250}
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, {Key_LeftControl, Key_LeftBracket, 250}
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, {Key_RightControl, Key_RightBracket, 250}
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, SPACECADET_MAP_END
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};
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//Set the map.
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SpaceCadet.map = spacecadetmap;
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}
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```
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## Plugin methods
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The plugin provides the `SpaceCadet` object, with the following methods and
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properties:
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### `.map`
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> Set the key map. This takes an array of
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> `kaleidoscope::plugin::SpaceCadet::KeyBinding` objects with the special
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> `SPACECADET_MAP_END` sentinal to mark the end of the map. Each KeyBinding
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> object takes, in order, the key that was pressed, the key that should be sent
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> instead, and an optional per-key timeout override
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>
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> If not explicitly set, defaults to mapping left `shift` to `(` and right `shift`
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> to `)`.
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### `kaleidoscope::plugin::SpaceCadet::KeyBinding`
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> An object consisting of the key that is pressed, the key that should be sent
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> in its place, and the timeout (in milliseconds) until the key press is
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> considered to be a "held" key press. The third parameter, the timeout, is
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> optional and may be set per-key or left out entirely (or set to `0`) to use
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> the default timeout value.
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### `.time_out`
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> Set this property to the number of milliseconds to wait before considering a
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> held key in isolation as its secondary role. That is, we'd have to hold a
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> `Shift` key this long, by itself, to trigger the `Shift` role in itself. This
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> timeout setting can be overridden by an individual key in the keymap, but if
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> it is omitted or set to `0` in the key map, the global timeout will be used.
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>
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> Defaults to 1000.
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### `.enable()`
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> This method enables the SpaceCadet plugin. This is useful for interfacing
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> with other plugins or macros, especially where SpaceCadet functionality isn't
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> always desired.
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>
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> The default behavior is `enabled`.
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### `.disable()`
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> This method disables the SpaceCadet behavior. This is useful for interfacing
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> with other plugins or macros, especially where SpaceCadet functionality isn't
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> always desired.
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### `.active()`
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> This method returns `true` if SpaceCadet is enabled and `false` if SpaceCadet
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> is disabled. This is useful for interfacing with other plugins or macros,
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> especially where SpaceCadet functionality isn't always desired.
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### `Key_SpaceCadetEnable`
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> This provides a key for placing on a keymap for enabling the SpaceCadet
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> behavior. This is only triggered on initial downpress, and does not
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> trigger again if held down or when the key is released.
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### `Key_SpaceCadetDisable`
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> This provides a key for placing on a keymap for disabling the SpaceCadet
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> behavior. This is only triggered on initial downpress, and does not
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> trigger again if held down or when the key is released.
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## Dependencies
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* [Kaleidoscope-Ranges](Ranges.md)
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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/SpaceCadet/SpaceCadet.ino
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