Add outside scroll vector, add correct check for is in view zone

druid/base/scroll.lua

@@ -155,6 +155,7 @@ function Scroll.init(self, view_node, content_node)
 	self._is_vertical_scroll = true
 	self._grid_on_change = nil
 	self._grid_on_change_callback = nil
+	self._outside_offset_vector = vmath.vector3(0)
 
 	self:_update_size()
 end
@@ -166,6 +167,7 @@ end
 
 
 function Scroll.update(self, dt)
+	self:_update_params(dt)
 	if self.drag.is_drag then
 		self:_update_hand_scroll(dt)
 	else
@@ -362,13 +364,14 @@ function Scroll.set_vertical_scroll(self, state)
 end
 
 
---- Check node if it visible now on scroll
+--- Check node if it visible now on scroll.
+-- Extra border is not affected. Return true for elements in extra scroll zone
 -- @tparam Scroll self
 -- @tparma node node The node to check
 -- @treturn boolean True, if node in visible scroll area
 function Scroll.is_node_in_view(self, node)
 	local node_border = helper.get_border(node, gui.get_position(node))
-	local view_border = helper.get_border(self.view_node, -self.position)
+	local view_border = helper.get_border(self.view_node, -(self.position - self._outside_offset_vector))
 
 	-- Check is vertical outside (Left or Right):
 	if node_border.z < view_border.x or node_border.x > view_border.z then
@@ -666,4 +669,30 @@ function Scroll._update_size(self)
 end
 
 
+function Scroll._update_params(self, dt)
+	local t = self.target_position
+	local b = self.available_pos
+
+	self._outside_offset_vector.x = 0
+	self._outside_offset_vector.y = 0
+
+	-- Right border (minimum x)
+	if t.x < b.x then
+		self._outside_offset_vector.x = t.x - b.x
+	end
+	-- Left border (maximum x)
+	if t.x > b.z then
+		self._outside_offset_vector.x = t.x - b.z
+	end
+	-- Top border (minimum y)
+	if t.y < b.y then
+		self._outside_offset_vector.y = t.y - b.y
+	end
+	-- Bot border (maximum y)
+	if t.y > b.w then
+		self._outside_offset_vector.y = t.y - b.w
+	end
+end
+
+
 return Scroll

druid/extended/infinity_list.lua

@@ -189,6 +189,8 @@ function M:_check_elements_from(index, step)
             is_outside = true
 
             -- remove nexts:
+            -- We add one more element, which is not in view to
+            -- check what it's always outside to stop spawning
             local remove_index = index + step
             while self._data_visual[remove_index] do
                 self:_remove_at(remove_index)

example/page/infinity_page.lua

@@ -11,7 +11,7 @@ local function create_infinity_instance(self, record, index)
         self.infinity_list:add(self.infinity_list:get_length() + 1)
     end)
     button.on_long_click:subscribe(function()
-        self.infinity_list:remove_by_data(record)
+        -- self.infinity_list:remove_by_data(record)
     end)
 
     return instance["infinity_prefab"], button
@@ -25,7 +25,7 @@ local function create_infinity_instance_hor(self, record, index)
 
     local button = self.druid:new_button(instance["infinity_prefab"], function()
         print("Infinity click on", record)
-        self.infinity_list_hor:remove_by_data(record)
+        -- self.infinity_list_hor:remove_by_data(record)
     end)
 
     return instance["infinity_prefab"], button
@@ -40,7 +40,7 @@ local function create_infinity_instance_small(self, record, index)
 
     local button = self.druid:new_button(instance["infinity_prefab_small"], function()
         print("Infinity click on", record)
-        self.infinity_list_small:remove_by_data(record)
+        -- self.infinity_list_small:remove_by_data(record)
     end)
     button:set_click_zone(self.infinity_scroll_3.view_node)
 
@@ -56,7 +56,7 @@ local function create_infinity_instance_dynamic(self, record, index)
     gui.set_size(instance["infinity_prefab_dynamic"], vmath.vector3(200, 60 + index * 3, 0))
     local button = self.druid:new_button(instance["infinity_prefab_dynamic"], function()
         print("Dynamic click on", record)
-        self.infinity_list_dynamic:remove_by_data(record)
+        -- self.infinity_list_dynamic:remove_by_data(record)
     end)
     button:set_click_zone(self.infinity_scroll_dynamic.view_node)
 
@@ -72,7 +72,7 @@ local function create_infinity_instance_dynamic_hor(self, record, index)
     gui.set_size(instance["infinity_prefab_dynamic"], vmath.vector3(150 + 2 * index, 60, 0))
     local button = self.druid:new_button(instance["infinity_prefab_dynamic"], function()
         print("Dynamic click on", record)
-        self.infinity_list_dynamic_hor:remove_by_data(record)
+        -- self.infinity_list_dynamic_hor:remove_by_data(record)
     end)
     button:set_click_zone(self.infinity_scroll_dynamic_hor.view_node)