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Multiple antecedent morph compiles.

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Void Your Warranty 2023-11-28 15:48:33 +01:00
parent 1c1670c5a4
commit b0b2e5e533
2 changed files with 108 additions and 56 deletions
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4
app/dts/bindings/behaviors/zmk,behavior-antecedent-morph.yaml
View file

@ -8,6 +8,10 @@ compatible: "zmk,behavior-antecedent-morph"
include: zero_param.yaml
properties:
defaults:
type: phandle-array
required: true
specifier-space: binding
bindings:
type: phandle-array
required: true

160
app/src/behaviors/behavior_antecedent_morph.c
View file

@ -11,6 +11,7 @@
#include <zephyr/logging/log.h>
#include <zmk/behavior.h>
#include <zmk/keymap.h>
#include <zmk/event_manager.h>
#include <zmk/events/keycode_state_changed.h>
#include <zmk/hid.h>
@ -19,22 +20,24 @@ LOG_MODULE_DECLARE(zmk, CONFIG_ZMK_LOG_LEVEL);
#if DT_HAS_COMPAT_STATUS_OKAY(DT_DRV_COMPAT)
// Configuration struct per instance
// configuration struct per instance
struct behavior_antecedent_morph_config {
int serial;
int max_delay_ms;
struct zmk_behavior_binding normal_binding;
struct zmk_behavior_binding morph_binding;
int32_t antecedents_len;
int32_t antecedents[];
int serial; // serial number of the instance of this behavior
uint32_t max_delay_ms; // maximum delay between key release and successive key press for the adaptive behavior
size_t defaults_len; // length of the array of default behaviors (must be 1)
struct zmk_behavior_binding *defaults; // array of default behaviors
size_t bindings_len; // length of the array of morphed behaviors
struct zmk_behavior_binding *bindings; // array of morphed behaviors
int32_t antecedents_len; // length of the array of antecedents (key codes)
int32_t antecedents[]; // array of antecedents (key codes)
};
// Data struct per instance
// data struct per instance
struct behavior_antecedent_morph_data {
struct zmk_behavior_binding *pressed_binding;
struct zmk_behavior_binding *pressed_binding; // the actual behavior that was pressed by the adaptive behavior
};
// Data shared by all instances
// data shared by all instances
static int32_t code_pressed; // most recently pressed key code (with implicit mods, usage page and keycode)
static int64_t time_pressed; // time stamp in milli-seconds of that key press
@ -43,22 +46,31 @@ static int antecedent_morph_keycode_state_changed_listener(const zmk_event_t *eh
ZMK_LISTENER(behavior_antecedent_morph, antecedent_morph_keycode_state_changed_listener);
ZMK_SUBSCRIPTION(behavior_antecedent_morph,zmk_keycode_state_changed);
// Capture all key press and release events in order to record the most recently pressed key code.
// Note that the event structure gives us the keycode (16 bit), the usage page (8 bit) and the implicit modifiers (8 bit),
// but not the explicit modifiers. If the keymap contains the binding "&kp RA(Y)", for example, then right-alt is an
// implicit modifier so that instead of the Y, the special character Ü is sent (US International layout).
// Whether the user is holding down a shift key at that moment, however, i.e. the explicit modifiers, is not known. We could
// reconstruct this information by tracking the press and release events of the modifier keys (keycodes higher than 0xe0)
// though.
// We here record all key press events of non-modifier keys (keycodes less than 0xe0).
// Capture all key press and release events in order to record the most recently released key code.
//
// Note that the event structure gives us the keycode (16 bit), the usage page (8 bit) and the implicit modifiers (8
// bit), but not the explicit modifiers. If the keymap contains the binding "&kp RA(Y)", for example, then right-alt is
// an implicit modifier so that instead of the Y, the special character Ü is sent (US International layout).
//
// Whether the user is holding down a shift key at that moment, however, i.e. the explicit modifiers, is not known. We
// could reconstruct this information by tracking the press and release events of the modifier keys (keycodes higher
// than 0xe0) though, but in the present version, the potential antecedents are recorded without modifiers.
//
// We here record all key release events of non-modifier keys (keycodes less than 0xe0).
//
// If someone somewhere triggers a key down event with an illegal key code (beyond 0xff), this key code is recorded as a
// potential antecedent, but is then discarded. This way, it is possible to trigger 'silent antecedents', e.g. in order
// to create new dead keys.
static int antecedent_morph_keycode_state_changed_listener(const zmk_event_t *eh) {
struct zmk_keycode_state_changed *ev = as_zmk_keycode_state_changed(eh);
int32_t code = ((ev->implicit_modifiers & 0xff) << 24) | ((ev->usage_page & 0xff) << 16) | (ev->keycode & 0xffff);
LOG_DBG("%s keycode %d page %d implicit mods %d explicit mods %d code 0x%08x",ev->state ? "down" : "up",ev->keycode,ev->usage_page,ev->implicit_modifiers,ev->explicit_modifiers,code);
LOG_DBG("%s keycode %d; page %d; implicit mods %d; explicit mods %d; key code 0x%08x",ev->state ? "down" : "up",ev->keycode,ev->usage_page,ev->implicit_modifiers,ev->explicit_modifiers,code);
if ((ev->state) && ((ev->keycode < 0xe0) || (ev->keycode > 0xff))) {
LOG_DBG("code_pressed changes from 0x%08x to 0x%08x",code_pressed,code);
LOG_DBG("global <code_pressed> variable changes from 0x%08x to 0x%08x",code_pressed,code);
code_pressed = code;
time_pressed = ev->timestamp;
}
@ -71,36 +83,66 @@ static int antecedent_morph_keycode_state_changed_listener(const zmk_event_t *eh
}
}
// When an antecedent morph binding is pressed, we test whether the most recently pressed key code
// is among the configured antecedents and whether the corresponding key press event was no more
// than the configured delay time ago.
// When an antecedent morph binding is pressed, we test whether the most recently released key code is among the
// configured antecedents and whether the corresponding key release event was no more than the configured delay time
// ago.
static int on_antecedent_morph_binding_pressed(struct zmk_behavior_binding *binding,
struct zmk_behavior_binding_event event) {
const struct device *dev = device_get_binding(binding->behavior_dev);
const struct behavior_antecedent_morph_config *cfg = dev->config;
struct behavior_antecedent_morph_data *data = dev->data;
bool morph = false;
int morph = -1;
if (data->pressed_binding != NULL) {
LOG_ERR("Can't press the same antecedent-morph twice");
return -ENOTSUP;
}
LOG_DBG("press serial no. %d when code_pressed 0x%08x delay %dms explicit_mods 0x%02x",cfg->serial,code_pressed,(int32_t)(event.timestamp-time_pressed),zmk_hid_get_explicit_mods());
LOG_DBG("press zmk,behavior-antecedent-morph serial no. %d when <code_pressed> is 0x%08x; delay %dms; and explicit_mods 0x%02x",
cfg->serial,code_pressed,(int32_t)(event.timestamp-time_pressed),zmk_hid_get_explicit_mods());
for (int i=0;i<cfg->antecedents_len;i++) {
if (code_pressed == cfg->antecedents[i]) {
morph = true;
morph = i;
}
}
if ((morph) && ((int32_t)(event.timestamp-time_pressed)) < cfg->max_delay_ms) {
if ((morph >= 0) && ((int32_t)(event.timestamp-time_pressed)) < cfg->max_delay_ms) {
// If the the delay between the most recent key release and the pressing of the current behavior is less than the
// configured maximum delay and if the most recently released key is among the recorded antecedents, issue the
// behavior among the 'bindings' that is at the corresponding position to the antecedent among the 'antecedents'.
//
// Note that should one of the arrays 'bindings' or 'defaults' are too short, an error is triggered and the behavior
// never pressed.
LOG_DBG("morph condition satisfied");
data->pressed_binding = (struct zmk_behavior_binding *)&cfg->morph_binding;
if (morph < cfg->bindings_len) {
data->pressed_binding = (struct zmk_behavior_binding *)&cfg->bindings[morph];
} else {
LOG_ERR("Property 'bindings' must be an array at least of length %d.",morph+1);
return -ENOTSUP;
}
} else {
data->pressed_binding = (struct zmk_behavior_binding *)&cfg->normal_binding;
// Otherwise, issue the first behavior of the 'defaults' array.
if (0 < cfg->defaults_len) {
data->pressed_binding = (struct zmk_behavior_binding *)&cfg->defaults[0];
} else {
LOG_ERR("Property 'defaults' must be an array at least of length 1.");
return -ENOTSUP;
}
}
return behavior_keymap_binding_pressed(data->pressed_binding, event);
}
// The release of the antecedent morph behavior considers the behavior that was recorded in the instance data and
// releases it.
static int on_antecedent_morph_binding_released(struct zmk_behavior_binding *binding,
struct zmk_behavior_binding_event event) {
const struct device *dev = device_get_binding(binding->behavior_dev);
@ -112,13 +154,12 @@ static int on_antecedent_morph_binding_released(struct zmk_behavior_binding *bin
return -ENOTSUP;
}
LOG_DBG("release serial %d",cfg->serial);
LOG_DBG("release zmk,behavior-antecedent-morph serial no. %d",cfg->serial);
struct zmk_behavior_binding *pressed_binding = data->pressed_binding;
data->pressed_binding = NULL;
int err;
err = behavior_keymap_binding_released(pressed_binding, event);
return err;
return behavior_keymap_binding_released(pressed_binding, event);
}
static const struct behavior_driver_api behavior_antecedent_morph_driver_api = {
@ -130,38 +171,45 @@ static int behavior_antecedent_morph_init(const struct device *dev) {
const struct behavior_antecedent_morph_config *cfg = dev->config;
LOG_DBG("serial no. %d has got %d antecedents.",cfg->serial,cfg->antecedents_len);
LOG_DBG("zmk,behavior-antecedent-morph serial no. %d defined with %d defaults, %d bindings and %d antecedents.",cfg->serial,cfg->defaults_len,cfg->bindings_len,cfg->antecedents_len);
for (int i=0; i<cfg->antecedents_len;i++) {
LOG_DBG("antedecent no. %d is 0x%08x.",i,cfg->antecedents[i]);
}
code_pressed = 0;
return 0;
}
#define _TRANSFORM_ENTRY(idx, node) \
{ \
.behavior_dev = DT_PROP(DT_INST_PHANDLE_BY_IDX(node, bindings, idx), label), \
.param1 = COND_CODE_0(DT_INST_PHA_HAS_CELL_AT_IDX(node, bindings, idx, param1), (0), \
(DT_INST_PHA_BY_IDX(node, bindings, idx, param1))), \
.param2 = COND_CODE_0(DT_INST_PHA_HAS_CELL_AT_IDX(node, bindings, idx, param2), (0), \
(DT_INST_PHA_BY_IDX(node, bindings, idx, param2))), \
}
#define _TRANSFORM_ENTRY(idx, node) ZMK_KEYMAP_EXTRACT_BINDING(idx, node)
#define KP_INST(n) \
static struct behavior_antecedent_morph_config behavior_antecedent_morph_config_##n = { \
.serial = n, \
.max_delay_ms = DT_INST_PROP(n, max_delay_ms), \
.normal_binding = _TRANSFORM_ENTRY(0, n), \
.morph_binding = _TRANSFORM_ENTRY(1, n), \
.antecedents = DT_INST_PROP(n, antecedents), \
.antecedents_len = DT_INST_PROP_LEN(n, antecedents), \
}; \
static struct behavior_antecedent_morph_data behavior_antecedent_morph_data_##n = {}; \
DEVICE_DT_INST_DEFINE(n, behavior_antecedent_morph_init, NULL, &behavior_antecedent_morph_data_##n, \
&behavior_antecedent_morph_config_##n, APPLICATION, \
CONFIG_KERNEL_INIT_PRIORITY_DEFAULT, &behavior_antecedent_morph_driver_api);
#define TRANSFORMED_DEFAULTS(node) \
{ LISTIFY(DT_INST_PROP_LEN(node, defaults), _TRANSFORM_ENTRY, (, ), DT_DRV_INST(node)) }
#define TRANSFORMED_BINDINGS(node) \
{ LISTIFY(DT_INST_PROP_LEN(node, bindings), _TRANSFORM_ENTRY, (, ), DT_DRV_INST(node)) }
#define KP_INST(n) \
static struct zmk_behavior_binding behavior_antecedent_morph_config_##n##_defaults[DT_INST_PROP_LEN(n, defaults)] = \
TRANSFORMED_DEFAULTS(n); \
static struct zmk_behavior_binding behavior_antecedent_morph_config_##n##_bindings[DT_INST_PROP_LEN(n, bindings)] = \
TRANSFORMED_BINDINGS(n); \
static struct behavior_antecedent_morph_config behavior_antecedent_morph_config_##n = { \
.serial = n, \
.max_delay_ms = DT_INST_PROP(n, max_delay_ms), \
.defaults = behavior_antecedent_morph_config_##n##_defaults, \
.defaults_len = DT_INST_PROP_LEN(n, defaults), \
.bindings = behavior_antecedent_morph_config_##n##_bindings, \
.bindings_len = DT_INST_PROP_LEN(n, bindings), \
.antecedents = DT_INST_PROP(n, antecedents), \
.antecedents_len = DT_INST_PROP_LEN(n, antecedents) \
}; \
static struct behavior_antecedent_morph_data behavior_antecedent_morph_data_##n = { \
.pressed_binding = NULL \
}; \
DEVICE_DT_INST_DEFINE(n,behavior_antecedent_morph_init,NULL,NULL, \
&behavior_antecedent_morph_config_##n, \
APPLICATION, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT, \
&behavior_antecedent_morph_driver_api);
DT_INST_FOREACH_STATUS_OKAY(KP_INST)