Update grid and scroll documentation

druid/base/dynamic_grid.lua

@@ -33,20 +33,20 @@ local SIDE_VECTORS = {
 	BOT = vmath.vector3(0, 1, 0),
 }
 
+
 --- Component init function
 -- @function dynamic_grid:init
 -- @tparam node parent The gui node parent, where items will be placed
 function DynamicGrid:init(parent, side)
 	self.parent = self:get_node(parent)
-	local parent_pivot = gui.get_pivot(self.parent)
 
+	local parent_pivot = gui.get_pivot(self.parent)
 	self.pivot = helper.get_pivot_offset(parent_pivot)
 
 	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.on_add_item = Event()
@@ -59,6 +59,11 @@ function DynamicGrid:init(parent, side)
 end
 
 
+function DynamicGrid:on_layout_change()
+	self:_update(true)
+end
+
+
 --- Return pos for grid node index
 -- @function dynamic_grid:get_pos
 -- @tparam number index The grid element index
@@ -99,11 +104,6 @@ function DynamicGrid:get_pos(index, node, origin_index)
 end
 
 
-function DynamicGrid:on_layout_change()
-	self:_update(true)
-end
-
-
 --- Set grid items offset, the distance between items
 -- @function dynamic_grid:set_offset
 -- @tparam vector3 offset Offset
@@ -211,23 +211,6 @@ function DynamicGrid:get_index_by_node(node)
 end
 
 
-function DynamicGrid:get_center_position()
-	return vmath.vector3(
-		(self.border.x + self.border.z)/2,
-		(self.border.y + self.border.w)/2,
-		0)
-end
-
-
-function DynamicGrid:get_zero_offset()
-	-- zero offset: center pos - border size * anchor
-	return vmath.vector3(
-		-((self.border.x + self.border.z)/2 + (self.border.z - self.border.x) * self.pivot.x),
-		-((self.border.y + self.border.w)/2 + (self.border.y - self.border.w) * self.pivot.y),
-		0)
-end
-
-
 --- Return array of all node positions
 -- @function dynamic_grid:get_all_pos
 -- @treturn vector3[] All grid node positions
@@ -263,14 +246,34 @@ function DynamicGrid:clear()
 end
 
 
---- Return the grid nodes table
--- @function dynamic_grid:get_nodes
--- @treturn table<index, node> The grid nodes
-function DynamicGrid:get_nodes()
-	return self.nodes
+function DynamicGrid:_add_node(node, index, origin_index)
+	self.nodes[index] = {
+		node = node,
+		pos = self:get_pos(index, node, origin_index),
+		size = self:_get_node_size(node),
+		pivot = const.PIVOTS[gui.get_pivot(node)]
+	}
+
+	-- Add new item instantly in new pos
+	gui.set_parent(node, self.parent)
+	gui.set_position(node, self.nodes[index].pos + self:_get_zero_offset())
 end
 
 
+--- Update grid inner state
+-- @function dynamic_grid:_update
+-- @tparam bool is_instant If true, node position update instantly, otherwise with set_position_function callback
+-- @local
+function DynamicGrid:_update(is_instant)
+	self:_update_indexes()
+	self:_update_borders()
+	self:_update_pos(is_instant)
+end
+
+
+--- Update first and last indexes of grid nodes
+-- @function dynamic_grid:_update_indexes
+-- @local
 function DynamicGrid:_update_indexes()
 	self.first_index = nil
 	self.last_index = nil
@@ -284,6 +287,9 @@ function DynamicGrid:_update_indexes()
 end
 
 
+--- Update grid content borders, recalculate min and max values
+-- @function dynamic_grid:_update_borders
+-- @local
 function DynamicGrid:_update_borders()
 	if not self.first_index then
 		self.border = vmath.vector4(0)
@@ -310,8 +316,12 @@ function DynamicGrid:_update_borders()
 end
 
 
+--- Update grid nodes position
+-- @function dynamic_grid:_update_indexes
+-- @tparam bool is_instant If true, node position update instantly, otherwise with set_position_function callback
+-- @local
 function DynamicGrid:_update_pos(is_instant)
-	local offset = self:get_zero_offset()
+	local offset = self:_get_zero_offset()
 
 	for index, node in pairs(self.nodes) do
 		if is_instant then
@@ -325,13 +335,6 @@ function DynamicGrid:_update_pos(is_instant)
 end
 
 
-function DynamicGrid:_update(is_instant)
-	self:_update_indexes()
-	self:_update_borders()
-	self:_update_pos(is_instant)
-end
-
-
 function DynamicGrid:_get_next_node_pos(origin_node_index, new_node, place_side)
 	local node = self.nodes[origin_node_index]
 
@@ -356,17 +359,12 @@ function DynamicGrid:_get_node_size(node)
 end
 
 
-function DynamicGrid:_add_node(node, index, origin_index)
-	self.nodes[index] = {
-		node = node,
-		pos = self:get_pos(index, node, origin_index),
-		size = self:_get_node_size(node),
-		pivot = const.PIVOTS[gui.get_pivot(node)]
-	}
-
-	-- Add new item instantly in new pos
-	gui.set_parent(node, self.parent)
-	gui.set_position(node, self.nodes[index].pos + self:get_zero_offset())
+function DynamicGrid:_get_zero_offset()
+	-- zero offset: center pos - border size * anchor
+	return vmath.vector3(
+		-((self.border.x + self.border.z)/2 + (self.border.z - self.border.x) * self.pivot.x),
+		-((self.border.y + self.border.w)/2 + (self.border.y - self.border.w) * self.pivot.y),
+		0)
 end
 
 

druid/base/scroll.lua

@@ -327,6 +327,11 @@ end
 
 
 
+--- Bind the grid component (Static or Dynamic) to recalc
+-- scroll size on grid changes
+-- @function scroll:bind_grid
+-- @tparam druid.static_grid|druid.dynamic_grid Druid grid component
+-- @treturn druid.scroll Current scroll instance
 function Scroll:bind_grid(grid)
 	if self._grid_on_change then
 		self._grid_on_change:unsubscribe(self._grid_on_change_callback)
@@ -343,6 +348,7 @@ function Scroll:bind_grid(grid)
 	self._grid_on_change_callback = self._grid_on_change:subscribe(function()
 		self:set_size(grid:get_size())
 	end)
+	self:set_size(grid:get_size())
 
 	return self
 end
@@ -568,10 +574,6 @@ function Scroll:_update_size()
 
 	self.available_pos = get_border_vector(view_border - content_border)
 	self.available_size = get_size_vector(self.available_pos)
-	self.available_pos.x = self.available_pos.x
-	self.available_pos.z = self.available_pos.z
-	self.available_pos.y = self.available_pos.y
-	self.available_pos.w = self.available_pos.w
 
 	self.drag.can_x = self.available_size.x > 0 and self._is_horizontal_scroll
 	self.drag.can_y = self.available_size.y > 0 and self._is_vertical_scroll
@@ -601,10 +603,6 @@ function Scroll:_update_size()
 
 	self.available_pos_extra = get_border_vector(view_border - content_border_extra)
 	self.available_size_extra = get_size_vector(self.available_pos_extra)
-	self.available_pos_extra.x = self.available_pos_extra.x
-	self.available_pos_extra.z = self.available_pos_extra.z
-	self.available_pos_extra.y = self.available_pos_extra.y
-	self.available_pos_extra.w = self.available_pos_extra.w
 end
 
 

druid/base/static_grid.lua

@@ -155,7 +155,7 @@ function StaticGrid:add(item, index)
 	self:_update_indexes()
 	self:_update_borders()
 
-	gui.set_position(item, self:get_pos(index) + self:get_zero_offset())
+	gui.set_position(item, self:get_pos(index) + self:_get_zero_offset())
 
 	self:_update_pos()
 
@@ -243,7 +243,7 @@ function StaticGrid:clear()
 end
 
 
-function StaticGrid:get_zero_offset()
+function StaticGrid:_get_zero_offset()
 	-- zero offset: center pos - border size * anchor
 	return vmath.vector3(
 		-((self.border.x + self.border.z)/2 + (self.border.z - self.border.x) * self.pivot.x),
@@ -253,14 +253,10 @@ function StaticGrid:get_zero_offset()
 end
 
 
---- Return the grid nodes table
--- @function static_grid:get_nodes
--- @treturn table<index, node> The grid nodes
-function StaticGrid:get_nodes()
-	return self.nodes
-end
-
-
+--- Update grid inner state
+-- @function static_grid:_update
+-- @tparam bool is_instant If true, node position update instantly, otherwise with set_position_function callback
+-- @local
 function StaticGrid:_update(is_instant)
 	self:_update_indexes()
 	self:_update_borders()
@@ -268,6 +264,9 @@ function StaticGrid:_update(is_instant)
 end
 
 
+--- Update first and last indexes of grid nodes
+-- @function static_grid:_update_indexes
+-- @local
 function StaticGrid:_update_indexes()
 	self.first_index = nil
 	self.last_index = nil
@@ -281,6 +280,9 @@ function StaticGrid:_update_indexes()
 end
 
 
+--- Update grid content borders, recalculate min and max values
+-- @function static_grid:_update_borders
+-- @local
 function StaticGrid:_update_borders()
 	if not self.first_index then
 		self.border = vmath.vector4(0)
@@ -307,8 +309,12 @@ function StaticGrid:_update_borders()
 end
 
 
+--- Update grid nodes position
+-- @function static_grid:_update_indexes
+-- @tparam bool is_instant If true, node position update instantly, otherwise with set_position_function callback
+-- @local
 function StaticGrid:_update_pos(is_instant)
-	local zero_offset = self:get_zero_offset()
+	local zero_offset = self:_get_zero_offset()
 
 	for i, node in pairs(self.nodes) do
 		local pos = self:get_pos(i)

example/page/grid_page.lua

@@ -1,5 +1,3 @@
-local druid_const = require("druid.const")
-
 local M = {}