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-rw-r--r--docs/feature_combo.md50
-rw-r--r--keyboards/gboards/g/keymap_combo.h48
-rw-r--r--quantum/process_keycode/process_combo.c14
3 files changed, 104 insertions, 8 deletions
diff --git a/docs/feature_combo.md b/docs/feature_combo.md
index c45e3fd0e4..75c78c4cd4 100644
--- a/docs/feature_combo.md
+++ b/docs/feature_combo.md
@@ -328,6 +328,51 @@ If you, for example, use multiple base layers for different key layouts, one for
With `#define COMBO_ONLY_FROM_LAYER 0` in config.h, the combos' keys are always checked from layer `0`, even if other layers are active.
+### Combo reference layers by layer.
+
+If not using `COMBO_ONLY_FROM_LAYER` it is possible to specify a
+combo reference layer for any layer using the `combo_ref_from_layer` hook.
+The combo macros automatically create this function from the `COMBO_REF_LAYER()`
+entries given.
+
+This function returns the assigned reference layer for the current layer.
+if there is no match, it returns the default reference layer if set,
+or the current layer otherwise. A default layer can be set with
+`DEFAULT_REF_LAYER(_MY_COMBO_REF_LAYER)`
+
+If not set, the default reference layer selection from the automatically generated
+`combo-ref-from-layer()` will be the current layer.
+
+The following `combo_ref_from_layer` function
+will give a reference layer of _QWERTY for the _DVORAK layer and
+will give the _NAV layer as a reference to it's self. All other layers
+will have the default for their combo reference layer. If the default
+is not set, all other layers will reference themselves.
+
+ ```c
+ #define COMBO_REF_DEFAULT _MY_COMBO_LAYER
+ ...
+
+ uint8_t combo_ref_from_layer(uint8_t layer){
+ switch (get_highest_layer(layer_state)){
+ case _DVORAK: return _QWERTY;
+ case _NAV: return _NAV;
+ default: return _MY_COMBO_LAYER;
+ }
+ return layer; // important if default is not in case.
+ }
+
+ ```
+
+ The equivalent definition using the combo macros is this:
+
+ ```c
+ COMBO_REF_LAYER(_DVORAK, _QWERTY)
+ COMBO_REF_LAYER(_NAV, _NAV)
+ DEFAULT_REF_LAYER(_MY_COMBO_LAYER).
+ ```
+
+
## User callbacks
In addition to the keycodes, there are a few functions that you can use to set the status, or check it:
@@ -350,6 +395,11 @@ First, you need to add `VPATH += keyboards/gboards` to your `rules.mk`. Next, in
Then, write your combos in `combos.def` file in the following manner:
```c
+// Alternate reference layers by layer
+// Layer Reference layer
+COMBO_REF_LAYER(_DVORAK, _QWERTY) // reference the qwerty layer for dvorak.
+COMBO_REF_LAYER(_NAV, _NAV) // explicit reference to self instead of the default.
+
// name result chord keys
COMB(AB_ESC, KC_ESC, KC_A, KC_B)
COMB(JK_TAB, KC_TAB, KC_J, KC_K)
diff --git a/keyboards/gboards/g/keymap_combo.h b/keyboards/gboards/g/keymap_combo.h
index b92b6a4bc4..68ea44b1b4 100644
--- a/keyboards/gboards/g/keymap_combo.h
+++ b/keyboards/gboards/g/keymap_combo.h
@@ -1,4 +1,10 @@
// Keymap helpers
+// define reference layers per layer.
+#define REF_LAYER_FOR_LAYER(LAYER, REF_LAYER) \
+ case LAYER: return REF_LAYER;
+
+#define DEF_REF_LAYER(LAYER) \
+ default: return LAYER;
#define K_ENUM(name, key, ...) name,
#define K_DATA(name, key, ...) const uint16_t PROGMEM cmb_##name[] = {__VA_ARGS__, COMBO_END};
@@ -7,17 +13,22 @@
#define A_ENUM(name, string, ...) name,
#define A_DATA(name, string, ...) const uint16_t PROGMEM cmb_##name[] = {__VA_ARGS__, COMBO_END};
#define A_COMB(name, string, ...) [name] = COMBO_ACTION(cmb_##name),
-#define A_ACTI(name, string, ...) \
- case name: \
- if (pressed) SEND_STRING(string); \
+#define A_ACTI(name, string, ...) \
+ case name: \
+ if (pressed) SEND_STRING(string); \
break;
-#define A_TOGG(name, layer, ...) \
- case name: \
- if (pressed) layer_invert(layer); \
+#define A_TOGG(name, layer, ...) \
+ case name: \
+ if (pressed) layer_invert(layer); \
break;
#define BLANK(...)
+#undef COMBO_REF_LAYER
+#undef DEFAULT_REF_LAYER
+#define COMBO_REF_LAYER BLANK
+#define DEFAULT_REF_LAYER BLANK
+
// Generate data needed for combos/actions
// Create Enum
#undef COMB
@@ -66,10 +77,33 @@ void process_combo_event(uint16_t combo_index, bool pressed) {
}
// Allow user overrides per keymap
-#if __has_include("inject.h")
+#if __has_include("inject.h")
# include "inject.h"
#endif
}
#undef COMB
#undef SUBS
#undef TOGG
+
+// Allow reference layers per layer.
+#define COMB BLANK
+#define SUBS BLANK
+#define TOGG BLANK
+
+#undef DEFAULT_REF_LAYER
+#undef COMBO_REF_LAYER
+#define COMBO_REF_LAYER REF_LAYER_FOR_LAYER
+#define DEFAULT_REF_LAYER DEF_REF_LAYER
+
+uint8_t combo_ref_from_layer(uint8_t current_layer){
+ switch (current_layer){
+#include "combos.def"
+ }
+ return current_layer;
+}
+
+#undef COMB
+#undef SUBS
+#undef TOGG
+#undef COMBO_REF_LAYER
+#undef DEFAULT_REF_LAYER
diff --git a/quantum/process_keycode/process_combo.c b/quantum/process_keycode/process_combo.c
index d8b089db16..8597649c92 100644
--- a/quantum/process_keycode/process_combo.c
+++ b/quantum/process_keycode/process_combo.c
@@ -29,6 +29,12 @@ extern uint16_t COMBO_LEN;
__attribute__((weak)) void process_combo_event(uint16_t combo_index, bool pressed) {}
+#ifndef COMBO_ONLY_FROM_LAYER
+__attribute__((weak)) uint8_t combo_ref_from_layer(uint8_t layer) {
+ return layer;
+}
+#endif
+
#ifdef COMBO_MUST_HOLD_PER_COMBO
__attribute__((weak)) bool get_combo_must_hold(uint16_t index, combo_t *combo) {
return false;
@@ -304,7 +310,7 @@ void apply_combo(uint16_t combo_index, combo_t *combo) {
#if defined(EXTRA_EXTRA_LONG_COMBOS)
uint32_t state = 0;
#elif defined(EXTRA_LONG_COMBOS)
- uint16_t state = 0;
+ uint16_t state = 0;
#else
uint8_t state = 0;
#endif
@@ -549,6 +555,12 @@ bool process_combo(uint16_t keycode, keyrecord_t *record) {
#ifdef COMBO_ONLY_FROM_LAYER
/* Only check keycodes from one layer. */
keycode = keymap_key_to_keycode(COMBO_ONLY_FROM_LAYER, record->event.key);
+#else
+ uint8_t highest_layer = get_highest_layer(layer_state);
+ uint8_t ref_layer = combo_ref_from_layer(highest_layer);
+ if (ref_layer != highest_layer) {
+ keycode = keymap_key_to_keycode(ref_layer, record->event.key);
+ }
#endif
for (uint16_t idx = 0; idx < COMBO_LEN; ++idx) {