With the new implementation, there are two lookup functions, because we have two
caches, and different parts of the firmware will want to use either this or
that (or perhaps both, in rare cases).
First of all, we use caches because looking up a key through all the layers
is costy, and the cost increases dramatically the more layers we have.
Then, we have the `effectiveKeymapCache`, because to have layer behaviours
we want, that is, if you hold a key on a layer, release the layer key but
continue holding the other, we want for the layered keycode to continue
repeating. At the same time, we want other keys to not be affected by the
now-turned-off layer. So we update the keycode in the cache on-demand, when
the key is pressed or released. (see the top of `handleKeyswitchEvent`).
On the other hand, we also have plugins that scan the whole keymap, and do
things based on that information, such as highlighting keys that changed
between layers. These need to be able to look at a state of where the
keymap *should* be, not necessarily where it is. The `effectiveKeymapCache`
is not useful here. So we use a `keymapCache` which we update whenever
layers change (see `Layer.on` and `Layer.off`), and it updates the cache to
show how the keymap should look, without the `effectiveKeymapCache`-induced
behaviour.
Thus, if we are curious about what a given key will do, use `lookup`. If we
are curious what the active layer state describes the key as, use
`lookupUncached`.
Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
Only update the keymap cache if the layer state changed for real. If we turn a
layer that was already on, on again, we do not need to update. Same for turning
them off.
This results in a tiny speedup if we have code that calls `Layer.on()` or
`Layer.off()` often.
Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
When we change layers, we want to update the key cache for the whole keyboard,
so that LED modes and other things that depend on all keys being up-to-date will
work as expected.
Do the same at `Kaleidoscope.setup` time, so we start with a good state too.
This fixeskeyboardio/Kaleidoscope-Numlock#7.
Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
It may happen that we get passed an UNKNOWN_KEYSWITCH_LOCATION, which will
always be out of bounds. Lets not corrupt random memory when in this situation,
but instead, return quickly.
Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
For some odd reason, initializing it there crashes the firmware early on. Until
I figure out how to fix this, lets default to an implicit false.
Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
Switch from the masking behaviour to repeating the symbol the key had when first
pressed.
This - along with the previous changes - fixes#158.
Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
Instead of storing the layer for each key, store the keycode, so that lookups
are considerably faster (one array lookup instead of two). This saves us almost
a full millisecond per scan cycle. Furthermore, inline `Layer_.lookup`, saving
us even more time.
Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
This changes how key caching & lookup works: instead of updating the whole key
cache whenever we change the layer state, we update each key before they are
pressed or released. This allows us to have two different ways in which layers
can work:
- Keys still held when releasing the layer key will be masked out until they are
released. (This is the current behaviour)
- Keys held will repeat the keycode they had when they toggled on, even if the
layer key gets released prior to this other key, while other keys will not be
affected.
One can toggle between the two modes by setting
`Kaleidoscope.repeat_first_press` to `true` (second behaviour) or `false` (first
behaviour).
For now, the default behaviour is left unchanged.
Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
When a masked key is released, instead of unmasking it and returning, unmask it
and let the event through. This fixeskeyboardio/Kaleidoscope-OneShot#10.
Reported-by: Craig Disselkoen
Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
The goal is to ignore key events from still-held keys in a situation where we
just turned a layer off. Thus, if one holds a momentary layer key, then presses
and holds another key, releases the layer key, we want to ignore the other held
keys until they are released.
This is accomplished by masking all held keys when a momentary layer has been
turned off, and ignoring all masked key events in `handleKeyswitchEvent` until
they are released, when we unmask them.
This should address #150, but requires
keyboardio/Kaleidoscope-Hardware-Model01#9.
Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
rather than send key down events for a while before sending a key
release event as we did with the old scheme, this sends the events
paired together as "one shot". This is closer to the spec and what OSX
needs to accept these events
Jesse Vincent
Gergely Nagy
Jesse Vincent
Craig Disselkoen