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fix(invalidation): do not invalidate an area if it's not on a visible screen

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This commit is contained in:
Gabor Kiss-Vamosi 2021-02-19 12:02:07 +01:00
parent e088388fd5
commit 4c56747142
1 changed files with 30 additions and 28 deletions
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58
src/lv_core/lv_obj_pos.c
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@ -490,36 +490,38 @@ bool lv_obj_area_is_visible(const lv_obj_t * obj, lv_area_t * area)
/*Invalidate the object only if it belongs to the current or previous'*/
lv_obj_t * obj_scr = lv_obj_get_screen(obj);
lv_disp_t * disp = lv_obj_get_disp(obj_scr);
if(obj_scr == lv_disp_get_scr_act(disp) ||
obj_scr == lv_disp_get_scr_prev(disp) ||
obj_scr == lv_disp_get_layer_top(disp) ||
obj_scr == lv_disp_get_layer_sys(disp)) {
/*Truncate the area to the object*/
lv_area_t obj_coords;
lv_coord_t ext_size = _lv_obj_get_ext_draw_size(obj);
lv_area_copy(&obj_coords, &obj->coords);
obj_coords.x1 -= ext_size;
obj_coords.y1 -= ext_size;
obj_coords.x2 += ext_size;
obj_coords.y2 += ext_size;
bool is_common;
is_common = _lv_area_intersect(area, area, &obj_coords);
if(is_common == false) return false; /*The area is not on the object*/
/*Truncate recursively to the parents*/
lv_obj_t * par = lv_obj_get_parent(obj);
while(par != NULL) {
is_common = _lv_area_intersect(area, area, &par->coords);
if(is_common == false) return false; /*If no common parts with parent break;*/
if(lv_obj_has_flag(par, LV_OBJ_FLAG_HIDDEN)) return false; /*If the parent is hidden then the child is hidden and won't be drawn*/
par = lv_obj_get_parent(par);
}
if(obj_scr != lv_disp_get_scr_act(disp) &&
obj_scr != lv_disp_get_scr_prev(disp) &&
obj_scr != lv_disp_get_layer_top(disp) &&
obj_scr != lv_disp_get_layer_sys(disp))
{
return false;
}
/*Truncate the area to the object*/
lv_area_t obj_coords;
lv_coord_t ext_size = _lv_obj_get_ext_draw_size(obj);
lv_area_copy(&obj_coords, &obj->coords);
obj_coords.x1 -= ext_size;
obj_coords.y1 -= ext_size;
obj_coords.x2 += ext_size;
obj_coords.y2 += ext_size;
bool is_common;
is_common = _lv_area_intersect(area, area, &obj_coords);
if(is_common == false) return false; /*The area is not on the object*/
/*Truncate recursively to the parents*/
lv_obj_t * par = lv_obj_get_parent(obj);
while(par != NULL) {
is_common = _lv_area_intersect(area, area, &par->coords);
if(is_common == false) return false; /*If no common parts with parent break;*/
if(lv_obj_has_flag(par, LV_OBJ_FLAG_HIDDEN)) return false; /*If the parent is hidden then the child is hidden and won't be drawn*/
par = lv_obj_get_parent(par);
}
return true;
}