Add user-overridable callback for cancelling UCIS input (#5564)

* Add user-overridable callback for cancelling UCIS input

To clean up things from qk_ucis_start_user() for instance.

* restore lost newline to quantum/process_keycode/process_ucis.c

Co-Authored-By: shinmai <[email protected]>

build_keyboard.mk

@@ -398,6 +398,7 @@ $(KEYBOARD_OUTPUT)_CONFIG := $(PROJECT_CONFIG)
 all: build check-size
 build: elf cpfirmware
 check-size: build
+objs-size: build
 
 include show_options.mk
 include $(TMK_PATH)/rules.mk

quantum/process_keycode/process_ucis.c

@@ -64,6 +64,10 @@ void qk_ucis_symbol_fallback (void) {
   }
 }
 
+__attribute__((weak))
+void qk_ucis_cancel(void) {
+}
+
 void register_ucis(const char *hex) {
   for(int i = 0; hex[i]; i++) {
     uint8_t kc = 0;
@@ -130,6 +134,7 @@ bool process_ucis (uint16_t keycode, keyrecord_t *record) {
 
     if (keycode == KC_ESC) {
       qk_ucis_state.in_progress = false;
+      qk_ucis_cancel();
       return false;
     }
 

tmk_core/rules.mk

@@ -390,6 +390,9 @@ show_path:
 	@echo SRC=$(SRC)
 	@echo OBJ=$(OBJ)
 
+objs-size:
+	for i in $(OBJ); do echo $$i; done | sort | xargs $(SIZE)
+
 ifeq ($(findstring avr-gcc,$(CC)),avr-gcc)
 SIZE_MARGIN = 1024