129 bool _lv_area_intersect(lv_area_t * res_p, const lv_area_t * a1_p, const lv_area_t * a2_p)  in _lv_area_intersect()  argument
132     res_p->x1 = LV_MAX(a1_p->x1, a2_p->x1);  in _lv_area_intersect()
133     res_p->y1 = LV_MAX(a1_p->y1, a2_p->y1);  in _lv_area_intersect()
134     res_p->x2 = LV_MIN(a1_p->x2, a2_p->x2);  in _lv_area_intersect()
135     res_p->y2 = LV_MIN(a1_p->y2, a2_p->y2);  in _lv_area_intersect()
153 int8_t _lv_area_diff(lv_area_t * res_p, const lv_area_t * a1_p, const lv_area_t * a2_p)  in _lv_area_diff()  argument
156     if(!_lv_area_is_on(a1_p, a2_p)) return -1;  in _lv_area_diff()
159     if(_lv_area_is_in(a1_p, a2_p, 0)) return 0;  in _lv_area_diff()
170     lv_coord_t th = a2_p->y1 - a1_p->y1;  in _lv_area_diff()
180     lv_coord_t bh = a1_h - (a2_p->y2 - a1_p->y1);  in _lv_area_diff()
181     if(bh > 0 && a2_p->y2 < a1_p->y2) {  in _lv_area_diff()
183         n.y1 = a2_p->y2;  in _lv_area_diff()
185         n.y2 = a2_p->y2 + bh;  in _lv_area_diff()
190     lv_coord_t y1 = a2_p->y1 > a1_p->y1 ? a2_p->y1 : a1_p->y1;  in _lv_area_diff()
191     lv_coord_t y2 = a2_p->y2 < a1_p->y2 ? a2_p->y2 : a1_p->y2;  in _lv_area_diff()
195     lv_coord_t lw = a2_p->x1 - a1_p->x1;  in _lv_area_diff()
205     lv_coord_t rw = a1_w - (a2_p->x2 - a1_p->x1);  in _lv_area_diff()
207         n.x1 = a2_p->x2;  in _lv_area_diff()
209         n.x2 = a2_p->x2 + rw;  in _lv_area_diff()
224 void _lv_area_join(lv_area_t * a_res_p, const lv_area_t * a1_p, const lv_area_t * a2_p)  in _lv_area_join()  argument
226     a_res_p->x1 = LV_MIN(a1_p->x1, a2_p->x1);  in _lv_area_join()
227     a_res_p->y1 = LV_MIN(a1_p->y1, a2_p->y1);  in _lv_area_join()
228     a_res_p->x2 = LV_MAX(a1_p->x2, a2_p->x2);  in _lv_area_join()
229     a_res_p->y2 = LV_MAX(a1_p->y2, a2_p->y2);  in _lv_area_join()
305 bool _lv_area_is_on(const lv_area_t * a1_p, const lv_area_t * a2_p)  in _lv_area_is_on()  argument
307 …if((a1_p->x1 <= a2_p->x2) && (a1_p->x2 >= a2_p->x1) && (a1_p->y1 <= a2_p->y2) && (a1_p->y2 >= a2_p…  in _lv_area_is_on()