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Adapt Qukeys plugin to KeyEvent handlers

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Signed-off-by: Michael Richters <gedankenexperimenter@gmail.com>
pull/1024/head
Michael Richters 4 years ago
parent 8d4967db8d
commit 2842b377e9
No known key found for this signature in database
GPG Key ID: 1288FD13E4EEF0C0
2 changed files with 44 additions and 92 deletions
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117
plugins/Kaleidoscope-Qukeys/src/kaleidoscope/plugin/Qukeys.cpp
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@ -23,7 +23,9 @@
#include <Kaleidoscope-FocusSerial.h>
#include "kaleidoscope/progmem_helpers.h"
#include "kaleidoscope/layers.h"
#include "kaleidoscope/KeyEvent.h"
#include "kaleidoscope/KeyEventTracker.h"
#include "kaleidoscope/KeyAddrEventQueue.h"
namespace kaleidoscope {
namespace plugin {
@ -34,96 +36,46 @@ EventHandlerResult Qukeys::onNameQuery() {
// This is the event handler. It ignores certain events, but mostly just adds
// them to the Qukeys event queue.
EventHandlerResult Qukeys::onKeyswitchEvent(Key& key, KeyAddr k, uint8_t key_state) {
// If k is not a physical key, ignore it; some other plugin injected it.
if (! k.isValid() || (key_state & INJECTED) != 0) {
EventHandlerResult Qukeys::onKeyswitchEvent(KeyEvent &event) {
// If the plugin has already processed and released this event, ignore it.
// There's no need to update the event tracker explicitly.
if (event_tracker_.shouldIgnore(event)) {
// We should never get an event that's in our queue here, but just in case
// some other plugin sends one, abort.
if (event_queue_.shouldAbort(event))
return EventHandlerResult::ABORT;
return EventHandlerResult::OK;
}
// If the key was injected (from the queue being flushed), we need to ignore
// it.
if (flushing_queue_) {
// If event.addr is not a physical key, ignore it; some other plugin injected it.
if (! event.addr.isValid() || (event.state & INJECTED) != 0) {
return EventHandlerResult::OK;
}
// If Qukeys is turned off, continue to next plugin.
if (! active_) {
if (isDualUseKey(key)) {
key = queue_head_.primary_key;
if (isDualUseKey(event.key)) {
event.key = queue_head_.primary_key;
}
return EventHandlerResult::OK;
}
// Deal with keyswitch state changes.
if (keyToggledOn(key_state) || keyToggledOff(key_state)) {
// If the user rolled over from a non-modifier key to a qukey, let the
// release event for that key skip the queue. This prevents unintended
// repeat characters for the tapped key, which would otherwise have its
// release event delayed.
if (keyToggledOff(key_state) && event_queue_.length() == 1 &&
k != event_queue_.addr(0) && !isModifierKey(key)) {
return EventHandlerResult::OK;
}
// If we can't trivially ignore the event, just add it to the queue.
event_queue_.append(k, key_state);
event_queue_.append(event);
// In order to prevent overflowing the queue, process it now.
if (event_queue_.isFull()) {
processQueue();
}
while (processQueue());
// Any event that gets added to the queue gets re-processed later, so we
// need to abort processing now.
return EventHandlerResult::ABORT;
}
// The key is being held. We need to determine if we should block it because
// its key press event is still in the queue, waiting to be
// flushed. Therefore, we search the event queue for the same key. If the
// first event we find there is a key press, that means we need to suppress
// this hold, because it's still waiting on an earlier event.
for (uint8_t i{0}; i < event_queue_.length(); ++i) {
if (event_queue_.addr(i) == k) {
// If the first matching event is a release, we do not suppress it,
// because its press event has already been flushed.
if (event_queue_.isRelease(i)) {
break;
}
// Otherwise, the first matching event was a key press, so we need to
// suppress it for now.
return EventHandlerResult::ABORT;
}
}
// Either this key doesn't have an event in the queue at all, or its first
// event in the queue is a release. We treat the key as a normal held key.
return EventHandlerResult::OK;
}
// This hook runs once each cycle, and checks to see if the first event in the
// queue is ready to be flushed. It only allows one event to be flushed per
// cycle, because the keyboard HID report can't store all of the information
// necessary to correctly handle all of the rollover corner cases.
EventHandlerResult Qukeys::beforeReportingState() {
// For keys that have been physically released, but whose release events are
// still waiting to be flushed from the queue, we need to restore them,
// because `handleKeyswitchEvent()` didn't get called for those KeyAddrs.
for (uint8_t i{0}; i < event_queue_.length(); ++i) {
if (event_queue_.isRelease(i)) {
KeyAddr k = event_queue_.addr(i);
// Now for the tricky bit. Before "restoring" this key hold, we need to
// make sure that its key press event has already been flushed from the
// queue, so we need to search for a matching key press event preceding
// this release event. If we find one, we need to ignore it.
if (isKeyAddrInQueueBeforeIndex(k, i)) {
continue;
}
flushing_queue_ = true;
handleKeyswitchEvent(Key_NoKey, k, IS_PRESSED | WAS_PRESSED);
flushing_queue_ = false;
}
}
// Next, if there hasn't been a keypress in a while, update the prior keypress
EventHandlerResult Qukeys::afterEachCycle() {
// If there hasn't been a keypress in a while, update the prior keypress
// timestamp to avoid integer overflow issues:
if (Runtime.hasTimeExpired(prior_keypress_timestamp_,
minimum_prior_interval_)) {
@ -131,12 +83,14 @@ EventHandlerResult Qukeys::beforeReportingState() {
Runtime.millisAtCycleStart() - (minimum_prior_interval_ + 1);
}
// If any events get flushed from the queue, stop there; we can only safely
// send the one report per cycle.
if (processQueue()) {
// If there's nothing in the queue, there's nothing more to do.
if (event_queue_.isEmpty()) {
return EventHandlerResult::OK;
}
// Process as many events as we can from the queue.
while (processQueue());
// If we get here, that means that the first event in the queue is a qukey
// press. All that's left to do is to check if it's been held long enough that
// it has timed out.
@ -161,11 +115,9 @@ EventHandlerResult Qukeys::beforeReportingState() {
// overflow, but those are both rare cases, and should not cause any serious
// problems even when they do come up.
bool Qukeys::processQueue() {
// If the queue is empty, signal that the beforeReportingState() process
// should abort before checking for a hold timeout (since there's nothing to
// do).
// If there's nothing in the queue, abort.
if (event_queue_.isEmpty()) {
return true;
return false;
}
// In other cases, we will want the KeyAddr of the first event in the queue.
@ -194,6 +146,7 @@ bool Qukeys::processQueue() {
// We now know that the first event is a key press. If it's not a qukey, or if
// it's only there because the plugin was just turned off, we can flush it
// immediately.
// Should be able to remove the `active_` check once `deactivate()` gets updated
if (! isQukey(queue_head_addr) || ! active_) {
flushEvent(queue_head_.primary_key);
return true;
@ -211,8 +164,8 @@ bool Qukeys::processQueue() {
// key, so we don't need to do it repeatedly later.
bool qukey_is_spacecadet = isModifierKey(queue_head_.primary_key);
// If the qukey press is followed a printable key too closely, it's not
// eligible to take on its alternate value unless it's a SpaceCadet-type key.
// If the qukey press followed a printable key too closely, it's not eligible
// to take on its alternate value unless it's a SpaceCadet-type key.
if (!Runtime.hasTimeExpired(prior_keypress_timestamp_,
minimum_prior_interval_) &&
!qukey_is_spacecadet) {
@ -323,6 +276,7 @@ void Qukeys::flushEvent(Key event_key) {
// First we record the address and state of the event:
KeyAddr queue_head_addr = event_queue_.addr(0);
uint8_t keyswitch_state = event_queue_.isRelease(0) ? WAS_PRESSED : IS_PRESSED;
KeyEvent event{queue_head_addr, keyswitch_state, event_key, event_queue_.id(0)};
// If the flushed event is a keypress of a printable symbol, record its
// timestamp. This lets us suppress some unintended alternate values seen by
@ -334,12 +288,11 @@ void Qukeys::flushEvent(Key event_key) {
prior_keypress_timestamp_ = event_queue_.timestamp(0);
}
// Remove the head event from the queue:
// Remove the head event from the queue, then call `handleKeyswitchEvent()` to
// resume processing of the event. It's important to remove the event from the
// queue first; otherwise `onKeyswitchEvent()` will abort it.
event_queue_.shift();
// This ensures that the flushed event will be ignored by the event handler hook:
flushing_queue_ = true;
handleKeyswitchEvent(event_key, queue_head_addr, keyswitch_state);
flushing_queue_ = false;
Runtime.handleKeyswitchEvent(event);
}
@ -350,7 +303,7 @@ bool Qukeys::isQukey(KeyAddr k) {
// First, look up the value from the keymap. This value should be
// correct in the cache, even if there's been a layer change since
// the key was pressed.
Key key = Layer.lookup(k);
Key key = Runtime.lookupKey(k);
// Next, we check to see if this is a DualUse-type qukey (defined in the keymap)
if (isDualUseKey(key)) {

9
plugins/Kaleidoscope-Qukeys/src/kaleidoscope/plugin/Qukeys.h
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@ -21,6 +21,7 @@
#include "kaleidoscope/Runtime.h"
#include <Kaleidoscope-Ranges.h>
#include "kaleidoscope/KeyAddrEventQueue.h"
#include "kaleidoscope/KeyEventTracker.h"
// DualUse Key definitions for Qukeys in the keymap
#define MT(mod, key) Key( \
@ -139,10 +140,8 @@ class Qukeys : public kaleidoscope::Plugin {
// Kaleidoscope hook functions.
EventHandlerResult onNameQuery();
EventHandlerResult onKeyswitchEvent(Key &mapped_key,
KeyAddr key_addr,
uint8_t key_state);
EventHandlerResult beforeReportingState();
EventHandlerResult onKeyswitchEvent(KeyEvent &event);
EventHandlerResult afterEachCycle();
private:
// An array of Qukey objects in PROGMEM.
@ -185,7 +184,7 @@ class Qukeys : public kaleidoscope::Plugin {
// This is a guard against re-processing events when qukeys flushes them from
// its event queue. We can't just use an "injected" key state flag, because
// that would cause other plugins to also ignore the event.
bool flushing_queue_{false};
KeyEventTracker event_tracker_;
// A cache of the current qukey's primary and alternate key values, so we
// don't have to keep looking them up from PROGMEM.

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