Remove side from dynamic_grid, move it to node pivot

docs_md/changelog.md

@@ -106,6 +106,7 @@ Druid 0.5.0:
 		- Element size got from _gui.get_size_ * _gui.get_scale_
 		- This grid can not have spaces between elements. You will get the error, if spawn element far away from other elements
 		- The grid can spawn elements only in row or in collumn
+		- The grid node should have West or North pivot (vertical or horizontal element placement)
 - **#37** Add _on_layout_change_ support. Druid will keep and restore GUI component data between changing game layout. Override function _on_layout_change_ in your custom components to do stuff you need.
 - **#85** Move several components from `base` folder to `extended`. In future, to use them, you have to register them manually. This is need for decrease build size by excluding unused components
 - Add _scroll:set_vertical_scroll_ and _scroll:set_horizontal_scroll_ for disable scroll sides

druid/base/dynamic_grid.lua

@@ -37,16 +37,19 @@ local SIDE_VECTORS = {
 --- Component init function
 -- @function dynamic_grid:init
 -- @tparam node parent The gui node parent, where items will be placed
--- @tparam enum.side side The grid side. By default - vertical
 function DynamicGrid:init(parent, side)
-	self.nodes = {}
-	self.side = side or const.SIDE.Y
 	self.parent = self:get_node(parent)
+	local parent_pivot = gui.get_pivot(self.parent)
 
+	self.pivot = helper.get_pivot_offset(parent_pivot)
+	self.anchor = vmath.vector3(0.5 + self.pivot.x, 0.5 - self.pivot.y, 0)
+
+	assert(parent_pivot == gui.PIVOT_W or parent_pivot == gui.PIVOT_N, const.ERRORS.GRID_DYNAMIC_ANCHOR)
+	self.side = (parent_pivot == gui.PIVOT_W and const.SIDE.X or const.SIDE.Y)
+
+	self.nodes = {}
 	self.offset = vmath.vector3(0)
 	self.border = vmath.vector4(0) -- Current grid content size
-	self.pivot = helper.get_pivot_offset(gui.get_pivot(self.parent))
-	self.anchor = vmath.vector3(0.5 + self.pivot.x, 0.5 - self.pivot.y, 0)
 
 	self.on_add_item = Event()
 	self.on_remove_item = Event()

druid/const.lua

@@ -102,6 +102,11 @@ M.SWIPE = {
 }
 
 
+M.ERRORS = {
+	GRID_DYNAMIC_ANCHOR = "The pivot of dynamic grid node should be West or North"
+}
+
+
 M.EMPTY_FUNCTION = function() end
 M.EMPTY_STRING = ""
 M.SPACE_STRING = " "

example/page/grid_page.lua

@@ -79,7 +79,7 @@ end
 
 
 local function init_dynamic_grid(self)
-	self.dynamic_grid = self.druid:new_dynamic_grid("grid_dynamic_nodes", druid_const.SIDE.Y)
+	self.dynamic_grid = self.druid:new_dynamic_grid("grid_dynamic_nodes")
 
 	self.prefab_dynamic = gui.get_node("grid_dynamic_prefab")
 	gui.set_enabled(self.prefab_dynamic, false)