gBoards Common (#8921)

Co-Authored-By: Drashna Jaelre <drashna@live.com>

keyboards/gboards/g/keymap_combo.h

@@ -0,0 +1,56 @@
+// Keymap helpers
+
+#define K_ENUM(name, key, ...) name,
+#define K_DATA(name, key, ...) const uint16_t PROGMEM cmb_##name[] = {__VA_ARGS__, COMBO_END};
+#define K_COMB(name, key, ...) [name] = COMBO(cmb_##name, key),
+
+#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); \
+        break;
+#define BLANK(...)
+
+// Generate data needed for combos/actions
+// Create Enum
+#undef COMB
+#undef SUBS
+#define COMB K_ENUM
+#define SUBS A_ENUM
+enum combos {
+#include "combos.def"
+};
+
+// Bake combos into mem
+#undef COMB
+#undef SUBS
+#define COMB K_DATA
+#define SUBS A_DATA
+#include "combos.def"
+#undef COMB
+#undef SUBS
+
+// Fill combo array
+#define COMB K_COMB
+#define SUBS A_COMB
+combo_t key_combos[] = {
+#include "combos.def"
+};
+#undef COMB
+#undef SUBS
+
+// Export length to combo module
+int COMBO_LEN = sizeof(key_combos) / sizeof(key_combos[0]);
+
+// Fill QMK hook
+#define COMB BLANK
+#define SUBS A_ACTI
+void process_combo_event(uint8_t combo_index, bool pressed) {
+    switch (combo_index) {
+#include "combos.def"
+    }
+}
+#undef COMB
+#undef SUBS