void CanvasItem::_notification(int p_what) {
switch(p_what) {
case NOTIFICATION_ENTER_TREE: {
first_draw=true;
pending_children_sort=false;
if (get_parent()) {
CanvasItem *ci = get_parent()->cast_to<CanvasItem>();
if (ci)
C=ci->children_items.push_back(this);
}
_enter_canvas();
if (!block_transform_notify && !xform_change.in_list()) {
get_tree()->xform_change_list.add(&xform_change);
}
} break;
case NOTIFICATION_MOVED_IN_PARENT: {
if (group!="") {
get_tree()->call_group(SceneTree::GROUP_CALL_UNIQUE,group,"_raise_self");
} else {
CanvasItem *p = get_parent_item();
ERR_FAIL_COND(!p);
p->_queue_sort_children();
}
} break;
case NOTIFICATION_EXIT_TREE: {
if (xform_change.in_list())
get_tree()->xform_change_list.remove(&xform_change);
_exit_canvas();
if (C) {
get_parent()->cast_to<CanvasItem>()->children_items.erase(C);
C=NULL;
}
global_invalid=true;
} break;
case NOTIFICATION_DRAW: {
} break;
case NOTIFICATION_TRANSFORM_CHANGED: {
} break;
case NOTIFICATION_VISIBILITY_CHANGED: {
emit_signal(SceneStringNames::get_singleton()->visibility_changed);
} break;
}
}
void CanvasItem::_enter_canvas() {
if ((!get_parent() || !get_parent()->cast_to<CanvasItem>()) || toplevel) {
Node *n = this;
Viewport *viewport=NULL;
canvas_layer=NULL;
while(n) {
if (n->cast_to<Viewport>()) {
viewport = n->cast_to<Viewport>();
break;
}
if (!canvas_layer && n->cast_to<CanvasLayer>()) {
canvas_layer = n->cast_to<CanvasLayer>();
}
n=n->get_parent();
}
RID canvas;
if (canvas_layer)
canvas=canvas_layer->get_world_2d()->get_canvas();
else
canvas=viewport->find_world_2d()->get_canvas();
VisualServer::get_singleton()->canvas_item_set_parent(canvas_item,canvas);
group = "root_canvas"+itos(canvas.get_id());
add_to_group(group);
get_tree()->call_group(SceneTree::GROUP_CALL_UNIQUE,group,"_raise_self");
} else {
CanvasItem *parent = get_parent_item();
VisualServer::get_singleton()->canvas_item_set_parent(canvas_item,parent->get_canvas_item());
parent->_queue_sort_children();
}
pending_update=false;
update();
notification(NOTIFICATION_ENTER_CANVAS);
}
