34 static void group_notify_cb(lv_observer_t * observer, lv_subject_t * subject);
35 static lv_observer_t * bind_to_bitfield(lv_subject_t * subject, lv_obj_t * obj, lv_observer_cb_t cb…
37 static void obj_flag_observer_cb(lv_observer_t * observer, lv_subject_t * subject);
38 static void obj_state_observer_cb(lv_observer_t * observer, lv_subject_t * subject);
42     static void label_text_observer_cb(lv_observer_t * observer, lv_subject_t * subject);
47     static void arc_value_observer_cb(lv_observer_t * observer, lv_subject_t * subject);
52     static void slider_value_observer_cb(lv_observer_t * observer, lv_subject_t * subject);
57     static void roller_value_observer_cb(lv_observer_t * observer, lv_subject_t * subject);
62     static void dropdown_value_observer_cb(lv_observer_t * observer, lv_subject_t * subject);
77 void lv_subject_init_int(lv_subject_t * subject, int32_t value)  in lv_subject_init_int()  argument
79     lv_memzero(subject, sizeof(lv_subject_t));  in lv_subject_init_int()
80     subject->type = LV_SUBJECT_TYPE_INT;  in lv_subject_init_int()
81     subject->value.num = value;  in lv_subject_init_int()
82     subject->prev_value.num = value;  in lv_subject_init_int()
83     lv_ll_init(&(subject->subs_ll), sizeof(lv_observer_t));  in lv_subject_init_int()
86 void lv_subject_set_int(lv_subject_t * subject, int32_t value)  in lv_subject_set_int()  argument
88     if(subject->type != LV_SUBJECT_TYPE_INT) {  in lv_subject_set_int()
93     subject->prev_value.num = subject->value.num;  in lv_subject_set_int()
94     subject->value.num = value;  in lv_subject_set_int()
95     lv_subject_notify(subject);  in lv_subject_set_int()
98 int32_t lv_subject_get_int(lv_subject_t * subject)  in lv_subject_get_int()  argument
100     if(subject->type != LV_SUBJECT_TYPE_INT) {  in lv_subject_get_int()
105     return subject->value.num;  in lv_subject_get_int()
108 int32_t lv_subject_get_previous_int(lv_subject_t * subject)  in lv_subject_get_previous_int()  argument
110     if(subject->type != LV_SUBJECT_TYPE_INT) {  in lv_subject_get_previous_int()
115     return subject->prev_value.num;  in lv_subject_get_previous_int()
118 void lv_subject_init_string(lv_subject_t * subject, char * buf, char * prev_buf, size_t size, const…  in lv_subject_init_string()  argument
120     lv_memzero(subject, sizeof(lv_subject_t));  in lv_subject_init_string()
124     subject->type = LV_SUBJECT_TYPE_STRING;  in lv_subject_init_string()
125     subject->size = size;  in lv_subject_init_string()
126     subject->value.pointer = buf;  in lv_subject_init_string()
127     subject->prev_value.pointer = prev_buf;  in lv_subject_init_string()
129     lv_ll_init(&(subject->subs_ll), sizeof(lv_observer_t));  in lv_subject_init_string()
132 void lv_subject_copy_string(lv_subject_t * subject, const char * buf)  in lv_subject_copy_string()  argument
134     if(subject->type != LV_SUBJECT_TYPE_STRING) {  in lv_subject_copy_string()
139     if(subject->size < 1) return;  in lv_subject_copy_string()
140     if(subject->prev_value.pointer) {  in lv_subject_copy_string()
141         lv_strlcpy((char *)subject->prev_value.pointer, subject->value.pointer, subject->size);  in lv_subject_copy_string()
144     lv_strlcpy((char *)subject->value.pointer, buf, subject->size);  in lv_subject_copy_string()
146     lv_subject_notify(subject);  in lv_subject_copy_string()
150 void lv_subject_snprintf(lv_subject_t * subject, const char * format, ...)  in lv_subject_snprintf()  argument
152     if(subject->type != LV_SUBJECT_TYPE_STRING) {  in lv_subject_snprintf()
157     if(subject->size < 1) return;  in lv_subject_snprintf()
159     if(subject->prev_value.pointer) {  in lv_subject_snprintf()
160         lv_strlcpy((char *)subject->prev_value.pointer, subject->value.pointer, subject->size);  in lv_subject_snprintf()
165     const int ret = lv_vsnprintf((char *)subject->value.pointer, subject->size, format, va);  in lv_subject_snprintf()
169     lv_subject_notify(subject);  in lv_subject_snprintf()
172 const char * lv_subject_get_string(lv_subject_t * subject)  in lv_subject_get_string()  argument
174     if(subject->type != LV_SUBJECT_TYPE_STRING) {  in lv_subject_get_string()
179     return subject->value.pointer;  in lv_subject_get_string()
182 const char * lv_subject_get_previous_string(lv_subject_t * subject)  in lv_subject_get_previous_string()  argument
184     if(subject->type != LV_SUBJECT_TYPE_STRING) {  in lv_subject_get_previous_string()
189     return subject->prev_value.pointer;  in lv_subject_get_previous_string()
192 void lv_subject_init_pointer(lv_subject_t * subject, void * value)  in lv_subject_init_pointer()  argument
194     lv_memzero(subject, sizeof(lv_subject_t));  in lv_subject_init_pointer()
195     subject->type = LV_SUBJECT_TYPE_POINTER;  in lv_subject_init_pointer()
196     subject->value.pointer = value;  in lv_subject_init_pointer()
197     subject->prev_value.pointer = value;  in lv_subject_init_pointer()
198     lv_ll_init(&(subject->subs_ll), sizeof(lv_observer_t));  in lv_subject_init_pointer()
201 void lv_subject_set_pointer(lv_subject_t * subject, void * ptr)  in lv_subject_set_pointer()  argument
203     if(subject->type != LV_SUBJECT_TYPE_POINTER) {  in lv_subject_set_pointer()
208     subject->prev_value.pointer = subject->value.pointer;  in lv_subject_set_pointer()
209     subject->value.pointer = ptr;  in lv_subject_set_pointer()
210     lv_subject_notify(subject);  in lv_subject_set_pointer()
213 const void * lv_subject_get_pointer(lv_subject_t * subject)  in lv_subject_get_pointer()  argument
215     if(subject->type != LV_SUBJECT_TYPE_POINTER) {  in lv_subject_get_pointer()
220     return subject->value.pointer;  in lv_subject_get_pointer()
223 const void * lv_subject_get_previous_pointer(lv_subject_t * subject)  in lv_subject_get_previous_pointer()  argument
225     if(subject->type != LV_SUBJECT_TYPE_POINTER) {  in lv_subject_get_previous_pointer()
230     return subject->prev_value.pointer;  in lv_subject_get_previous_pointer()
233 void lv_subject_init_color(lv_subject_t * subject, lv_color_t color)  in lv_subject_init_color()  argument
235     lv_memzero(subject, sizeof(lv_subject_t));  in lv_subject_init_color()
236     subject->type = LV_SUBJECT_TYPE_COLOR;  in lv_subject_init_color()
237     subject->value.color = color;  in lv_subject_init_color()
238     subject->prev_value.color = color;  in lv_subject_init_color()
239     lv_ll_init(&(subject->subs_ll), sizeof(lv_observer_t));  in lv_subject_init_color()
242 void lv_subject_set_color(lv_subject_t * subject, lv_color_t color)  in lv_subject_set_color()  argument
244     if(subject->type != LV_SUBJECT_TYPE_COLOR) {  in lv_subject_set_color()
249     subject->prev_value.color = subject->value.color;  in lv_subject_set_color()
250     subject->value.color = color;  in lv_subject_set_color()
251     lv_subject_notify(subject);  in lv_subject_set_color()
254 lv_color_t lv_subject_get_color(lv_subject_t * subject)  in lv_subject_get_color()  argument
256     if(subject->type != LV_SUBJECT_TYPE_COLOR) {  in lv_subject_get_color()
261     return subject->value.color;  in lv_subject_get_color()
264 lv_color_t lv_subject_get_previous_color(lv_subject_t * subject)  in lv_subject_get_previous_color()  argument
266     if(subject->type != LV_SUBJECT_TYPE_COLOR) {  in lv_subject_get_previous_color()
271     return subject->prev_value.color;  in lv_subject_get_previous_color()
274 void lv_subject_init_group(lv_subject_t * subject, lv_subject_t * list[], uint32_t list_len)  in lv_subject_init_group()  argument
276     subject->type = LV_SUBJECT_TYPE_GROUP;  in lv_subject_init_group()
277     subject->size = list_len;  in lv_subject_init_group()
278     lv_ll_init(&(subject->subs_ll), sizeof(lv_observer_t));  in lv_subject_init_group()
279     subject->value.pointer = list;  in lv_subject_init_group()
285         lv_subject_add_observer(list[i], group_notify_cb, subject);  in lv_subject_init_group()
289 void lv_subject_deinit(lv_subject_t * subject)  in lv_subject_deinit()  argument
291     lv_observer_t * observer = lv_ll_get_head(&subject->subs_ll);  in lv_subject_deinit()
293         lv_observer_t * observer_next = lv_ll_get_next(&subject->subs_ll, observer);  in lv_subject_deinit()
297             lv_obj_remove_event_cb_with_user_data(observer->target, NULL, subject);  in lv_subject_deinit()
304     lv_ll_clear(&subject->subs_ll);  in lv_subject_deinit()
307 lv_subject_t * lv_subject_get_group_element(lv_subject_t * subject, int32_t index)  in lv_subject_get_group_element()  argument
309     if(subject->type != LV_SUBJECT_TYPE_GROUP) {  in lv_subject_get_group_element()
314     if(index >= subject->size)  return NULL;  in lv_subject_get_group_element()
316     return ((lv_subject_t **)(subject->value.pointer))[index];  in lv_subject_get_group_element()
319 lv_observer_t * lv_subject_add_observer(lv_subject_t * subject, lv_observer_cb_t cb, void * user_da…  in lv_subject_add_observer()  argument
321     lv_observer_t * observer = lv_subject_add_observer_obj(subject, cb, NULL, user_data);  in lv_subject_add_observer()
328 lv_observer_t * lv_subject_add_observer_obj(lv_subject_t * subject, lv_observer_cb_t cb, lv_obj_t *…  in lv_subject_add_observer_obj()  argument
331     LV_ASSERT_NULL(subject);  in lv_subject_add_observer_obj()
332     if(subject->type == LV_SUBJECT_TYPE_INVALID) {  in lv_subject_add_observer_obj()
336     lv_observer_t * observer = lv_ll_ins_tail(&(subject->subs_ll));  in lv_subject_add_observer_obj()
342     observer->subject = subject;  in lv_subject_add_observer_obj()
353     if(observer->cb) observer->cb(observer, subject);  in lv_subject_add_observer_obj()
358 lv_observer_t * lv_subject_add_observer_with_target(lv_subject_t * subject, lv_observer_cb_t cb, vo…  in lv_subject_add_observer_with_target()  argument
361     LV_ASSERT_NULL(subject);  in lv_subject_add_observer_with_target()
362     if(subject->type == LV_SUBJECT_TYPE_INVALID) {  in lv_subject_add_observer_with_target()
366     lv_observer_t * observer = lv_ll_ins_tail(&(subject->subs_ll));  in lv_subject_add_observer_with_target()
372     observer->subject = subject;  in lv_subject_add_observer_with_target()
378     if(observer->cb) observer->cb(observer, subject);  in lv_subject_add_observer_with_target()
388     observer->subject->notify_restart_query = 1;  in lv_observer_remove()
390     lv_ll_remove(&(observer->subject->subs_ll), observer);  in lv_observer_remove()
398 void lv_obj_remove_from_subject(lv_obj_t * obj, lv_subject_t * subject)  in lv_obj_remove_from_subject()  argument
406             if(subject == NULL || subject == observer->subject) {  in lv_obj_remove_from_subject()
421 void lv_subject_notify(lv_subject_t * subject)  in lv_subject_notify()  argument
423     LV_ASSERT_NULL(subject);  in lv_subject_notify()
426     LV_LL_READ(&(subject->subs_ll), observer) {  in lv_subject_notify()
431         subject->notify_restart_query = 0;  in lv_subject_notify()
432         LV_LL_READ(&(subject->subs_ll), observer) {  in lv_subject_notify()
434                 observer->cb(observer, subject);  in lv_subject_notify()
435                 if(subject->notify_restart_query) break;  in lv_subject_notify()
439     } while(subject->notify_restart_query);  in lv_subject_notify()
442 lv_observer_t * lv_obj_bind_flag_if_eq(lv_obj_t * obj, lv_subject_t * subject, lv_obj_flag_t flag, …  in lv_obj_bind_flag_if_eq()  argument
444 …lv_observer_t * observable = bind_to_bitfield(subject, obj, obj_flag_observer_cb, flag, ref_value,…  in lv_obj_bind_flag_if_eq()
448 lv_observer_t * lv_obj_bind_flag_if_not_eq(lv_obj_t * obj, lv_subject_t * subject, lv_obj_flag_t fl…  in lv_obj_bind_flag_if_not_eq()  argument
451 …lv_observer_t * observable = bind_to_bitfield(subject, obj, obj_flag_observer_cb, flag, ref_value,…  in lv_obj_bind_flag_if_not_eq()
455 lv_observer_t * lv_obj_bind_state_if_eq(lv_obj_t * obj, lv_subject_t * subject, lv_state_t state, i…  in lv_obj_bind_state_if_eq()  argument
457 …lv_observer_t * observable = bind_to_bitfield(subject, obj, obj_state_observer_cb, state, ref_valu…  in lv_obj_bind_state_if_eq()
461 lv_observer_t * lv_obj_bind_state_if_not_eq(lv_obj_t * obj, lv_subject_t * subject, lv_state_t stat…  in lv_obj_bind_state_if_not_eq()  argument
463 …lv_observer_t * observable = bind_to_bitfield(subject, obj, obj_state_observer_cb, state, ref_valu…  in lv_obj_bind_state_if_not_eq()
467 lv_observer_t * lv_obj_bind_checked(lv_obj_t * obj, lv_subject_t * subject)  in lv_obj_bind_checked()  argument
469 …lv_observer_t * observable = bind_to_bitfield(subject, obj, obj_state_observer_cb, LV_STATE_CHECKE…  in lv_obj_bind_checked()
470     lv_obj_add_event_cb(obj, obj_value_changed_event_cb, LV_EVENT_VALUE_CHANGED, subject);  in lv_obj_bind_checked()
475 lv_observer_t * lv_label_bind_text(lv_obj_t * obj, lv_subject_t * subject, const char * fmt)  in lv_label_bind_text()  argument
477     LV_ASSERT_NULL(subject);  in lv_label_bind_text()
481         if(subject->type != LV_SUBJECT_TYPE_STRING && subject->type != LV_SUBJECT_TYPE_POINTER) {  in lv_label_bind_text()
482             LV_LOG_WARN("Incompatible subject type: %d", subject->type);  in lv_label_bind_text()
487         if(subject->type != LV_SUBJECT_TYPE_STRING && subject->type != LV_SUBJECT_TYPE_POINTER &&  in lv_label_bind_text()
488            subject->type != LV_SUBJECT_TYPE_INT) {  in lv_label_bind_text()
489             LV_LOG_WARN("Incompatible subject type: %d", subject->type);  in lv_label_bind_text()
494 …lv_observer_t * observer = lv_subject_add_observer_obj(subject, label_text_observer_cb, obj, (void…  in lv_label_bind_text()
500 lv_observer_t * lv_arc_bind_value(lv_obj_t * obj, lv_subject_t * subject)  in lv_arc_bind_value()  argument
502     LV_ASSERT_NULL(subject);  in lv_arc_bind_value()
505     if(subject->type != LV_SUBJECT_TYPE_INT) {  in lv_arc_bind_value()
506         LV_LOG_WARN("Incompatible subject type: %d", subject->type);  in lv_arc_bind_value()
510     lv_obj_add_event_cb(obj, arc_value_changed_event_cb, LV_EVENT_VALUE_CHANGED, subject);  in lv_arc_bind_value()
512 … lv_observer_t * observer = lv_subject_add_observer_obj(subject, arc_value_observer_cb, obj, NULL);  in lv_arc_bind_value()
518 lv_observer_t * lv_slider_bind_value(lv_obj_t * obj, lv_subject_t * subject)  in lv_slider_bind_value()  argument
520     LV_ASSERT_NULL(subject);  in lv_slider_bind_value()
523     if(subject->type != LV_SUBJECT_TYPE_INT) {  in lv_slider_bind_value()
524         LV_LOG_WARN("Incompatible subject type: %d", subject->type);  in lv_slider_bind_value()
528     lv_obj_add_event_cb(obj, slider_value_changed_event_cb, LV_EVENT_VALUE_CHANGED, subject);  in lv_slider_bind_value()
530 …lv_observer_t * observer = lv_subject_add_observer_obj(subject, slider_value_observer_cb, obj, NUL…  in lv_slider_bind_value()
537 lv_observer_t * lv_roller_bind_value(lv_obj_t * obj, lv_subject_t * subject)  in lv_roller_bind_value()  argument
539     LV_ASSERT_NULL(subject);  in lv_roller_bind_value()
542     if(subject->type != LV_SUBJECT_TYPE_INT) {  in lv_roller_bind_value()
543         LV_LOG_WARN("Incompatible subject type: %d", subject->type);  in lv_roller_bind_value()
547     lv_obj_add_event_cb(obj, roller_value_changed_event_cb, LV_EVENT_VALUE_CHANGED, subject);  in lv_roller_bind_value()
549 …lv_observer_t * observer = lv_subject_add_observer_obj(subject, roller_value_observer_cb, obj, NUL…  in lv_roller_bind_value()
557 lv_observer_t * lv_dropdown_bind_value(lv_obj_t * obj, lv_subject_t * subject)  in lv_dropdown_bind_value()  argument
559     LV_ASSERT_NULL(subject);  in lv_dropdown_bind_value()
562     if(subject->type != LV_SUBJECT_TYPE_INT) {  in lv_dropdown_bind_value()
563         LV_LOG_WARN("Incompatible subject type: %d", subject->type);  in lv_dropdown_bind_value()
567     lv_obj_add_event_cb(obj, dropdown_value_changed_event_cb, LV_EVENT_VALUE_CHANGED, subject);  in lv_dropdown_bind_value()
569 …lv_observer_t * observer = lv_subject_add_observer_obj(subject, dropdown_value_observer_cb, obj, N…  in lv_dropdown_bind_value()
592 static void group_notify_cb(lv_observer_t * observer, lv_subject_t * subject)  in group_notify_cb()  argument
594     LV_UNUSED(subject);  in group_notify_cb()
605 static lv_observer_t * bind_to_bitfield(lv_subject_t * subject, lv_obj_t * obj, lv_observer_cb_t cb…  in bind_to_bitfield()  argument
608     LV_ASSERT_NULL(subject);  in bind_to_bitfield()
611     if(subject->type != LV_SUBJECT_TYPE_INT) {  in bind_to_bitfield()
612         LV_LOG_WARN("Incompatible subject type: %d", subject->type);  in bind_to_bitfield()
626     lv_observer_t * observable = lv_subject_add_observer_obj(subject, cb, obj, p);  in bind_to_bitfield()
631 static void obj_flag_observer_cb(lv_observer_t * observer, lv_subject_t * subject)  in obj_flag_observer_cb()  argument
635     bool res = subject->value.num == p->value.num;  in obj_flag_observer_cb()
646 static void obj_state_observer_cb(lv_observer_t * observer, lv_subject_t * subject)  in obj_state_observer_cb()  argument
650     bool res = subject->value.num == p->value.num;  in obj_state_observer_cb()
664     lv_subject_t * subject = lv_event_get_user_data(e);  in obj_value_changed_event_cb()  local
666     lv_subject_set_int(subject, lv_obj_has_state(obj, LV_STATE_CHECKED));  in obj_value_changed_event_cb()
671 static void label_text_observer_cb(lv_observer_t * observer, lv_subject_t * subject)  in label_text_observer_cb()  argument
676         lv_label_set_text(observer->target, subject->value.pointer);  in label_text_observer_cb()
679         switch(subject->type) {  in label_text_observer_cb()
681                 lv_label_set_text_fmt(observer->target, fmt, subject->value.num);  in label_text_observer_cb()
685                 lv_label_set_text_fmt(observer->target, fmt, subject->value.pointer);  in label_text_observer_cb()
700     lv_subject_t * subject = lv_event_get_user_data(e);  in arc_value_changed_event_cb()  local
702     lv_subject_set_int(subject, lv_arc_get_value(arc));  in arc_value_changed_event_cb()
705 static void arc_value_observer_cb(lv_observer_t * observer, lv_subject_t * subject)  in arc_value_observer_cb()  argument
707     lv_arc_set_value(observer->target, subject->value.num);  in arc_value_observer_cb()
717     lv_subject_t * subject = lv_event_get_user_data(e);  in slider_value_changed_event_cb()  local
719     lv_subject_set_int(subject, lv_slider_get_value(slider));  in slider_value_changed_event_cb()
722 static void slider_value_observer_cb(lv_observer_t * observer, lv_subject_t * subject)  in slider_value_observer_cb()  argument
724     lv_slider_set_value(observer->target, subject->value.num, LV_ANIM_OFF);  in slider_value_observer_cb()
734     lv_subject_t * subject = lv_event_get_user_data(e);  in roller_value_changed_event_cb()  local
736     lv_subject_set_int(subject, lv_roller_get_selected(roller));  in roller_value_changed_event_cb()
739 static void roller_value_observer_cb(lv_observer_t * observer, lv_subject_t * subject)  in roller_value_observer_cb()  argument
741     if((int32_t)lv_roller_get_selected(observer->target) != subject->value.num) {  in roller_value_observer_cb()
742         lv_roller_set_selected(observer->target, subject->value.num, LV_ANIM_OFF);  in roller_value_observer_cb()
753     lv_subject_t * subject = lv_event_get_user_data(e);  in dropdown_value_changed_event_cb()  local
755     lv_subject_set_int(subject, lv_dropdown_get_selected(dropdown));  in dropdown_value_changed_event_cb()
758 static void dropdown_value_observer_cb(lv_observer_t * observer, lv_subject_t * subject)  in dropdown_value_observer_cb()  argument
760     lv_dropdown_set_selected(observer->target, subject->value.num, LV_ANIM_OFF);  in dropdown_value_observer_cb()