105     lv_buttonmatrix_t * btnm = (lv_buttonmatrix_t *)obj;  in lv_buttonmatrix_set_map()  local
109     btnm->map_p = map;  in lv_buttonmatrix_set_map()
123     int32_t max_h_no_gap = max_h - (prow * (btnm->row_cnt - 1));  in lv_buttonmatrix_set_map()
133     for(row = 0; row < btnm->row_cnt; row++) {  in lv_buttonmatrix_set_map()
138             unit_cnt += get_button_width(btnm->ctrl_bits[btn_tot_i + btn_cnt]);  in lv_buttonmatrix_set_map()
148         int32_t row_y1 = stop + (max_h_no_gap * row) / btnm->row_cnt + row * prow;  in lv_buttonmatrix_set_map()
149         int32_t row_y2 = stop + (max_h_no_gap * (row + 1)) / btnm->row_cnt + row * prow - 1;  in lv_buttonmatrix_set_map()
158             uint32_t btn_u = get_button_width(btnm->ctrl_bits[btn_tot_i]);  in lv_buttonmatrix_set_map()
176             lv_area_set(&btnm->button_areas[btn_tot_i], btn_x1, row_y1, btn_x2, row_y2);  in lv_buttonmatrix_set_map()
195     lv_buttonmatrix_t * btnm = (lv_buttonmatrix_t *)obj;  in lv_buttonmatrix_set_ctrl_map()  local
196     lv_memcpy(btnm->ctrl_bits, ctrl_map, sizeof(lv_buttonmatrix_ctrl_t) * btnm->btn_cnt);  in lv_buttonmatrix_set_ctrl_map()
198     lv_buttonmatrix_set_map(obj, btnm->map_p);  in lv_buttonmatrix_set_ctrl_map()
205     lv_buttonmatrix_t * btnm = (lv_buttonmatrix_t *)obj;  in lv_buttonmatrix_set_selected_button()  local
207     if(btn_id >= btnm->btn_cnt && btn_id != LV_BUTTONMATRIX_BUTTON_NONE) return;  in lv_buttonmatrix_set_selected_button()
209     invalidate_button_area(obj, btnm->btn_id_sel);  in lv_buttonmatrix_set_selected_button()
210     btnm->btn_id_sel = btn_id;  in lv_buttonmatrix_set_selected_button()
218     lv_buttonmatrix_t * btnm = (lv_buttonmatrix_t *)obj;  in lv_buttonmatrix_set_button_ctrl()  local
220     if(btn_id >= btnm->btn_cnt) return;  in lv_buttonmatrix_set_button_ctrl()
222     if(btnm->one_check && (ctrl & LV_BUTTONMATRIX_CTRL_CHECKED)) {  in lv_buttonmatrix_set_button_ctrl()
226     btnm->ctrl_bits[btn_id] |= ctrl;  in lv_buttonmatrix_set_button_ctrl()
238     lv_buttonmatrix_t * btnm = (lv_buttonmatrix_t *)obj;  in lv_buttonmatrix_clear_button_ctrl()  local
240     if(btn_id >= btnm->btn_cnt) return;  in lv_buttonmatrix_clear_button_ctrl()
242     btnm->ctrl_bits[btn_id] &= (~ctrl);  in lv_buttonmatrix_clear_button_ctrl()
254     lv_buttonmatrix_t * btnm = (lv_buttonmatrix_t *)obj;  in lv_buttonmatrix_set_button_ctrl_all()  local
256     for(i = 0; i < btnm->btn_cnt; i++) {  in lv_buttonmatrix_set_button_ctrl_all()
265     lv_buttonmatrix_t * btnm = (lv_buttonmatrix_t *)obj;  in lv_buttonmatrix_clear_button_ctrl_all()  local
267     for(i = 0; i < btnm->btn_cnt; i++) {  in lv_buttonmatrix_clear_button_ctrl_all()
276     lv_buttonmatrix_t * btnm = (lv_buttonmatrix_t *)obj;  in lv_buttonmatrix_set_button_width()  local
277     if(btn_id >= btnm->btn_cnt) return;  in lv_buttonmatrix_set_button_width()
278     btnm->ctrl_bits[btn_id] &= (~LV_BUTTONMATRIX_WIDTH_MASK);  in lv_buttonmatrix_set_button_width()
279     btnm->ctrl_bits[btn_id] |= (LV_BUTTONMATRIX_WIDTH_MASK & width);  in lv_buttonmatrix_set_button_width()
281     lv_buttonmatrix_set_map(obj, btnm->map_p);  in lv_buttonmatrix_set_button_width()
288     lv_buttonmatrix_t * btnm = (lv_buttonmatrix_t *)obj;  in lv_buttonmatrix_set_one_checked()  local
289     btnm->one_check     = en;  in lv_buttonmatrix_set_one_checked()
303     lv_buttonmatrix_t * btnm = (lv_buttonmatrix_t *)obj;  in lv_buttonmatrix_get_map()  local
304     return btnm->map_p;  in lv_buttonmatrix_get_map()
311     lv_buttonmatrix_t * btnm = (lv_buttonmatrix_t *)obj;  in lv_buttonmatrix_get_selected_button()  local
312     return btnm->btn_id_sel;  in lv_buttonmatrix_get_selected_button()
321     lv_buttonmatrix_t * btnm = (lv_buttonmatrix_t *)obj;  in lv_buttonmatrix_get_button_text()  local
322     if(btn_id >= btnm->btn_cnt) return NULL;  in lv_buttonmatrix_get_button_text()
332         if(lv_strcmp(btnm->map_p[txt_i], "\n") == 0) txt_i++;  in lv_buttonmatrix_get_button_text()
335     if(btn_i == btnm->btn_cnt) return NULL;  in lv_buttonmatrix_get_button_text()
337     return btnm->map_p[txt_i];  in lv_buttonmatrix_get_button_text()
344     lv_buttonmatrix_t * btnm = (lv_buttonmatrix_t *)obj;  in lv_buttonmatrix_has_button_ctrl()  local
345     if(btn_id >= btnm->btn_cnt) return false;  in lv_buttonmatrix_has_button_ctrl()
347     return (btnm->ctrl_bits[btn_id] & ctrl) == ctrl;  in lv_buttonmatrix_has_button_ctrl()
354     lv_buttonmatrix_t * btnm = (lv_buttonmatrix_t *)obj;  in lv_buttonmatrix_get_one_checked()  local
356     return btnm->one_check;  in lv_buttonmatrix_get_one_checked()
367     lv_buttonmatrix_t * btnm = (lv_buttonmatrix_t *)obj;  in lv_buttonmatrix_constructor()  local
368     btnm->btn_cnt        = 0;  in lv_buttonmatrix_constructor()
369     btnm->row_cnt        = 0;  in lv_buttonmatrix_constructor()
370     btnm->btn_id_sel     = LV_BUTTONMATRIX_BUTTON_NONE;  in lv_buttonmatrix_constructor()
371     btnm->button_areas   = NULL;  in lv_buttonmatrix_constructor()
372     btnm->ctrl_bits      = NULL;  in lv_buttonmatrix_constructor()
373     btnm->map_p          = NULL;  in lv_buttonmatrix_constructor()
374     btnm->one_check      = 0;  in lv_buttonmatrix_constructor()
387     lv_buttonmatrix_t * btnm = (lv_buttonmatrix_t *)obj;  in lv_buttonmatrix_destructor()  local
388     lv_free(btnm->button_areas);  in lv_buttonmatrix_destructor()
389     lv_free(btnm->ctrl_bits);  in lv_buttonmatrix_destructor()
390     btnm->button_areas = NULL;  in lv_buttonmatrix_destructor()
391     btnm->ctrl_bits = NULL;  in lv_buttonmatrix_destructor()
407     lv_buttonmatrix_t * btnm = (lv_buttonmatrix_t *)obj;  in lv_buttonmatrix_event()  local
413             int32_t s = btnm->row_cnt > 0 ? lv_obj_get_content_height(obj) / btnm->row_cnt : 0;  in lv_buttonmatrix_event()
418         lv_buttonmatrix_set_map(obj, btnm->map_p);  in lv_buttonmatrix_event()
421         lv_buttonmatrix_set_map(obj, btnm->map_p);  in lv_buttonmatrix_event()
425         invalidate_button_area(obj, btnm->btn_id_sel);  in lv_buttonmatrix_event()
434             btnm->btn_id_sel = LV_BUTTONMATRIX_BUTTON_NONE;  in lv_buttonmatrix_event()
436                 if(button_is_inactive(btnm->ctrl_bits[btn_pr]) == false &&  in lv_buttonmatrix_event()
437                    button_is_hidden(btnm->ctrl_bits[btn_pr]) == false) {  in lv_buttonmatrix_event()
438                     btnm->btn_id_sel = btn_pr;  in lv_buttonmatrix_event()
439                     invalidate_button_area(obj, btnm->btn_id_sel); /*Invalidate the new area*/  in lv_buttonmatrix_event()
443                 btnm->btn_id_sel = LV_BUTTONMATRIX_BUTTON_NONE;  in lv_buttonmatrix_event()
447         if(btnm->btn_id_sel != LV_BUTTONMATRIX_BUTTON_NONE) {  in lv_buttonmatrix_event()
448             if(button_is_click_trig(btnm->ctrl_bits[btnm->btn_id_sel]) == false &&  in lv_buttonmatrix_event()
449                button_is_popover(btnm->ctrl_bits[btnm->btn_id_sel]) == false &&  in lv_buttonmatrix_event()
450                button_is_inactive(btnm->ctrl_bits[btnm->btn_id_sel]) == false &&  in lv_buttonmatrix_event()
451                button_is_hidden(btnm->ctrl_bits[btnm->btn_id_sel]) == false) {  in lv_buttonmatrix_event()
452                 uint32_t b = btnm->btn_id_sel;  in lv_buttonmatrix_event()
459         if(btnm->btn_id_sel != LV_BUTTONMATRIX_BUTTON_NONE) {  in lv_buttonmatrix_event()
466                 if(btn_pr != btnm->btn_id_sel) {  in lv_buttonmatrix_event()
467                     invalidate_button_area(obj, btnm->btn_id_sel); /*Invalidate the old area*/  in lv_buttonmatrix_event()
468                     btnm->btn_id_sel = LV_BUTTONMATRIX_BUTTON_NONE;  in lv_buttonmatrix_event()
474         if(btnm->btn_id_sel != LV_BUTTONMATRIX_BUTTON_NONE) {  in lv_buttonmatrix_event()
476             if(button_is_checkable(btnm->ctrl_bits[btnm->btn_id_sel]) &&  in lv_buttonmatrix_event()
477                !button_is_inactive(btnm->ctrl_bits[btnm->btn_id_sel])) {  in lv_buttonmatrix_event()
478                 if(button_get_checked(btnm->ctrl_bits[btnm->btn_id_sel]) && !btnm->one_check) {  in lv_buttonmatrix_event()
479                     btnm->ctrl_bits[btnm->btn_id_sel] &= (~LV_BUTTONMATRIX_CTRL_CHECKED);  in lv_buttonmatrix_event()
482                     btnm->ctrl_bits[btnm->btn_id_sel] |= LV_BUTTONMATRIX_CTRL_CHECKED;  in lv_buttonmatrix_event()
484                 if(btnm->one_check) make_one_button_checked(obj, btnm->btn_id_sel);  in lv_buttonmatrix_event()
487             if((button_is_click_trig(btnm->ctrl_bits[btnm->btn_id_sel]) == true ||  in lv_buttonmatrix_event()
488                 button_is_popover(btnm->ctrl_bits[btnm->btn_id_sel]) == true) &&  in lv_buttonmatrix_event()
489                button_is_inactive(btnm->ctrl_bits[btnm->btn_id_sel]) == false &&  in lv_buttonmatrix_event()
490                button_is_hidden(btnm->ctrl_bits[btnm->btn_id_sel]) == false) {  in lv_buttonmatrix_event()
491                 uint32_t b = btnm->btn_id_sel;  in lv_buttonmatrix_event()
498         invalidate_button_area(obj, btnm->btn_id_sel);  in lv_buttonmatrix_event()
502         if(btnm->btn_id_sel != LV_BUTTONMATRIX_BUTTON_NONE) {  in lv_buttonmatrix_event()
503             if(button_is_repeat_disabled(btnm->ctrl_bits[btnm->btn_id_sel]) == false &&  in lv_buttonmatrix_event()
504                button_is_inactive(btnm->ctrl_bits[btnm->btn_id_sel]) == false &&  in lv_buttonmatrix_event()
505                button_is_hidden(btnm->ctrl_bits[btnm->btn_id_sel]) == false) {  in lv_buttonmatrix_event()
506                 uint32_t b = btnm->btn_id_sel;  in lv_buttonmatrix_event()
513         invalidate_button_area(obj, btnm->btn_id_sel);  in lv_buttonmatrix_event()
514         btnm->btn_id_sel = LV_BUTTONMATRIX_BUTTON_NONE;  in lv_buttonmatrix_event()
517         if(btnm->btn_cnt == 0) return;  in lv_buttonmatrix_event()
530         if(btnm->btn_id_sel == LV_BUTTONMATRIX_BUTTON_NONE) {  in lv_buttonmatrix_event()
533                 if(btnm->one_check) {  in lv_buttonmatrix_event()
534                     while(b < btnm->btn_cnt &&  in lv_buttonmatrix_event()
535                           (button_is_hidden(btnm->ctrl_bits[b]) ||  in lv_buttonmatrix_event()
536                            button_is_inactive(btnm->ctrl_bits[b]) ||  in lv_buttonmatrix_event()
537                            button_is_checked(btnm->ctrl_bits[b]) == false)) {  in lv_buttonmatrix_event()
542                     while(b < btnm->btn_cnt &&  in lv_buttonmatrix_event()
543                           (button_is_hidden(btnm->ctrl_bits[b]) ||  in lv_buttonmatrix_event()
544                            button_is_inactive(btnm->ctrl_bits[b]))) {  in lv_buttonmatrix_event()
549                 btnm->btn_id_sel = b;  in lv_buttonmatrix_event()
552                 btnm->btn_id_sel = LV_BUTTONMATRIX_BUTTON_NONE;  in lv_buttonmatrix_event()
563         invalidate_button_area(obj, btnm->btn_id_sel);  in lv_buttonmatrix_event()
567             if(btnm->btn_id_sel == LV_BUTTONMATRIX_BUTTON_NONE)  btnm->btn_id_sel = 0;  in lv_buttonmatrix_event()
568             else btnm->btn_id_sel++;  in lv_buttonmatrix_event()
569             if(btnm->btn_id_sel >= btnm->btn_cnt) btnm->btn_id_sel = 0;  in lv_buttonmatrix_event()
571             uint32_t btn_id_start = btnm->btn_id_sel;  in lv_buttonmatrix_event()
572 …while(button_is_hidden(btnm->ctrl_bits[btnm->btn_id_sel]) || button_is_inactive(btnm->ctrl_bits[bt…  in lv_buttonmatrix_event()
573                 btnm->btn_id_sel++;  in lv_buttonmatrix_event()
574                 if(btnm->btn_id_sel >= btnm->btn_cnt) btnm->btn_id_sel = 0;  in lv_buttonmatrix_event()
576                 if(btnm->btn_id_sel == btn_id_start) {  in lv_buttonmatrix_event()
577                     btnm->btn_id_sel = LV_BUTTONMATRIX_BUTTON_NONE;  in lv_buttonmatrix_event()
583             if(btnm->btn_id_sel == LV_BUTTONMATRIX_BUTTON_NONE) btnm->btn_id_sel = 0;  in lv_buttonmatrix_event()
585             if(btnm->btn_id_sel == 0) btnm->btn_id_sel = btnm->btn_cnt - 1;  in lv_buttonmatrix_event()
586             else if(btnm->btn_id_sel > 0) btnm->btn_id_sel--;  in lv_buttonmatrix_event()
588             uint32_t btn_id_start = btnm->btn_id_sel;  in lv_buttonmatrix_event()
589 …while(button_is_hidden(btnm->ctrl_bits[btnm->btn_id_sel]) || button_is_inactive(btnm->ctrl_bits[bt…  in lv_buttonmatrix_event()
590                 if(btnm->btn_id_sel > 0) btnm->btn_id_sel--;  in lv_buttonmatrix_event()
591                 else btnm->btn_id_sel = btnm->btn_cnt - 1;  in lv_buttonmatrix_event()
593                 if(btnm->btn_id_sel == btn_id_start) {  in lv_buttonmatrix_event()
594                     btnm->btn_id_sel = LV_BUTTONMATRIX_BUTTON_NONE;  in lv_buttonmatrix_event()
602             if(btnm->btn_id_sel == LV_BUTTONMATRIX_BUTTON_NONE) {  in lv_buttonmatrix_event()
603                 btnm->btn_id_sel = 0;  in lv_buttonmatrix_event()
604 …while(button_is_hidden(btnm->ctrl_bits[btnm->btn_id_sel]) || button_is_inactive(btnm->ctrl_bits[bt…  in lv_buttonmatrix_event()
605                     btnm->btn_id_sel++;  in lv_buttonmatrix_event()
606                     if(btnm->btn_id_sel >= btnm->btn_cnt) {  in lv_buttonmatrix_event()
607                         btnm->btn_id_sel = LV_BUTTONMATRIX_BUTTON_NONE;  in lv_buttonmatrix_event()
615 …btnm->button_areas[btnm->btn_id_sel].x1 + (lv_area_get_width(&btnm->button_areas[btnm->btn_id_sel]…  in lv_buttonmatrix_event()
617                 for(area_below = btnm->btn_id_sel; area_below < btnm->btn_cnt; area_below++) {  in lv_buttonmatrix_event()
618 …                  if(btnm->button_areas[area_below].y1 > btnm->button_areas[btnm->btn_id_sel].y1 &&  in lv_buttonmatrix_event()
619                        pr_center >= btnm->button_areas[area_below].x1 &&  in lv_buttonmatrix_event()
620                        pr_center <= btnm->button_areas[area_below].x2 + col_gap &&  in lv_buttonmatrix_event()
621                        button_is_inactive(btnm->ctrl_bits[area_below]) == false &&  in lv_buttonmatrix_event()
622                        button_is_hidden(btnm->ctrl_bits[area_below]) == false) {  in lv_buttonmatrix_event()
627                 if(area_below < btnm->btn_cnt) btnm->btn_id_sel = area_below;  in lv_buttonmatrix_event()
633             if(btnm->btn_id_sel == LV_BUTTONMATRIX_BUTTON_NONE) {  in lv_buttonmatrix_event()
634                 btnm->btn_id_sel = 0;  in lv_buttonmatrix_event()
635 …while(button_is_hidden(btnm->ctrl_bits[btnm->btn_id_sel]) || button_is_inactive(btnm->ctrl_bits[bt…  in lv_buttonmatrix_event()
636                     btnm->btn_id_sel++;  in lv_buttonmatrix_event()
637                     if(btnm->btn_id_sel >= btnm->btn_cnt) {  in lv_buttonmatrix_event()
638                         btnm->btn_id_sel = LV_BUTTONMATRIX_BUTTON_NONE;  in lv_buttonmatrix_event()
646 …btnm->button_areas[btnm->btn_id_sel].x1 + (lv_area_get_width(&btnm->button_areas[btnm->btn_id_sel]…  in lv_buttonmatrix_event()
648                 for(area_above = btnm->btn_id_sel; area_above >= 0; area_above--) {  in lv_buttonmatrix_event()
649 …                  if(btnm->button_areas[area_above].y1 < btnm->button_areas[btnm->btn_id_sel].y1 &&  in lv_buttonmatrix_event()
650                        pr_center >= btnm->button_areas[area_above].x1 - col_gap &&  in lv_buttonmatrix_event()
651                        pr_center <= btnm->button_areas[area_above].x2 &&  in lv_buttonmatrix_event()
652                        button_is_inactive(btnm->ctrl_bits[area_above]) == false &&  in lv_buttonmatrix_event()
653                        button_is_hidden(btnm->ctrl_bits[area_above]) == false) {  in lv_buttonmatrix_event()
657                 if(area_above >= 0) btnm->btn_id_sel = area_above;  in lv_buttonmatrix_event()
661         invalidate_button_area(obj, btnm->btn_id_sel);  in lv_buttonmatrix_event()
672     lv_buttonmatrix_t * btnm = (lv_buttonmatrix_t *)obj;  in draw_main()  local
673     if(btnm->btn_cnt == 0) return;  in draw_main()
713     for(btn_i = 0; btn_i < btnm->btn_cnt; btn_i++, txt_i++) {  in draw_main()
715         while(lv_strcmp(btnm->map_p[txt_i], "\n") == 0) {  in draw_main()
720         if(button_is_hidden(btnm->ctrl_bits[btn_i])) continue;  in draw_main()
724         if(button_get_checked(btnm->ctrl_bits[btn_i])) btn_state |= LV_STATE_CHECKED;  in draw_main()
726         if(button_is_inactive(btnm->ctrl_bits[btn_i])) btn_state |= LV_STATE_DISABLED;  in draw_main()
727         else if(btn_i == btnm->btn_id_sel) {  in draw_main()
735         lv_area_copy(&btn_area, &btnm->button_areas[btn_i]);  in draw_main()
760         bool recolor = button_is_recolor(btnm->ctrl_bits[btn_i]);  in draw_main()
777 …    if((btn_state & LV_STATE_PRESSED) && (btnm->ctrl_bits[btn_i] & LV_BUTTONMATRIX_CTRL_POPOVER)) {  in draw_main()
789         const char * txt = btnm->map_p[txt_i];  in draw_main()
808 …    if((btn_state & LV_STATE_PRESSED) && (btnm->ctrl_bits[btn_i] & LV_BUTTONMATRIX_CTRL_POPOVER)) {  in draw_main()
830     lv_buttonmatrix_t * btnm = (lv_buttonmatrix_t *)obj;  in allocate_button_areas_and_controls()  local
831     btnm->row_cnt = 1;  in allocate_button_areas_and_controls()
840             btnm->row_cnt++;  in allocate_button_areas_and_controls()
846     if(btn_cnt == btnm->btn_cnt) return;  in allocate_button_areas_and_controls()
848     if(btnm->button_areas != NULL) {  in allocate_button_areas_and_controls()
849         lv_free(btnm->button_areas);  in allocate_button_areas_and_controls()
850         btnm->button_areas = NULL;  in allocate_button_areas_and_controls()
852     if(btnm->ctrl_bits != NULL) {  in allocate_button_areas_and_controls()
853         lv_free(btnm->ctrl_bits);  in allocate_button_areas_and_controls()
854         btnm->ctrl_bits = NULL;  in allocate_button_areas_and_controls()
857     btnm->button_areas = lv_malloc(sizeof(lv_area_t) * btn_cnt);  in allocate_button_areas_and_controls()
858     LV_ASSERT_MALLOC(btnm->button_areas);  in allocate_button_areas_and_controls()
859     btnm->ctrl_bits = lv_malloc(sizeof(lv_buttonmatrix_ctrl_t) * btn_cnt);  in allocate_button_areas_and_controls()
860     LV_ASSERT_MALLOC(btnm->ctrl_bits);  in allocate_button_areas_and_controls()
861     if(btnm->button_areas == NULL || btnm->ctrl_bits == NULL) btn_cnt = 0;  in allocate_button_areas_and_controls()
863     lv_memzero(btnm->ctrl_bits, sizeof(lv_buttonmatrix_ctrl_t) * btn_cnt);  in allocate_button_areas_and_controls()
865     btnm->btn_cnt = btn_cnt;  in allocate_button_areas_and_controls()
929     lv_buttonmatrix_t * btnm = (lv_buttonmatrix_t *)obj;  in get_button_from_point()  local
952     for(i = 0; i < btnm->btn_cnt; i++) {  in get_button_from_point()
953         lv_area_copy(&btn_area, &btnm->button_areas[i]);  in get_button_from_point()
973     if(i == btnm->btn_cnt) i = LV_BUTTONMATRIX_BUTTON_NONE;  in get_button_from_point()
985     lv_buttonmatrix_t * btnm = (lv_buttonmatrix_t *)obj;  in invalidate_button_area()  local
986     if(btn_idx >= btnm->btn_cnt) return;  in invalidate_button_area()
988     lv_area_copy(&btn_area, &btnm->button_areas[btn_idx]);  in invalidate_button_area()
1007     if((btn_idx == btnm->btn_id_sel) && (btnm->ctrl_bits[btn_idx] & LV_BUTTONMATRIX_CTRL_POPOVER)) {  in invalidate_button_area()
1038     lv_buttonmatrix_t * btnm = (lv_buttonmatrix_t *)obj;  in has_popovers_in_top_row()  local
1040     if(btnm->row_cnt <= 0) {  in has_popovers_in_top_row()
1044     const char * const * map_row = btnm->map_p;  in has_popovers_in_top_row()
1048         if(button_is_popover(btnm->ctrl_bits[btn_cnt])) {  in has_popovers_in_top_row()