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Grichelde/Libs/AceGUI-3.0/AceGUI-3.0.lua

1007 lines
30 KiB
Lua

--- **AceGUI-3.0** provides access to numerous widgets which can be used to create GUIs.
-- AceGUI is used by AceConfigDialog to create the option GUIs, but you can use it by itself
-- to create any custom GUI. There are more extensive examples in the test suite in the Ace3
-- stand-alone distribution.
--
-- **Note**: When using AceGUI-3.0 directly, please do not modify the frames of the widgets directly,
-- as any "unknown" change to the widgets will cause addons that get your widget out of the widget pool
-- to misbehave. If you think some part of a widget should be modifiable, please open a ticket, and we"ll
-- implement a proper API to modify it.
-- @usage
-- local AceGUI = LibStub("AceGUI-3.0")
-- -- Create a container frame
-- local f = AceGUI:Create("Frame")
-- f:SetCallback("OnClose",function(widget) AceGUI:Release(widget) end)
-- f:SetTitle("AceGUI-3.0 Example")
-- f:SetStatusText("Status Bar")
-- f:SetLayout("Flow")
-- -- Create a button
-- local btn = AceGUI:Create("Button")
-- btn:SetWidth(170)
-- btn:SetText("Button !")
-- btn:SetCallback("OnClick", function() print("Click!") end)
-- -- Add the button to the container
-- f:AddChild(btn)
-- @class file
-- @name AceGUI-3.0
-- @release $Id: AceGUI-3.0.lua 1228 2019-09-06 08:51:17Z nevcairiel $
local ACEGUI_MAJOR, ACEGUI_MINOR = "AceGUI-3.0", 40
local AceGUI, oldminor = LibStub:NewLibrary(ACEGUI_MAJOR, ACEGUI_MINOR)
if not AceGUI then return end -- No upgrade needed
-- Lua APIs
local tinsert = table.insert
local select, pairs, next, type = select, pairs, next, type
local error, assert = error, assert
local setmetatable, rawget = setmetatable, rawget
local math_max = math.max
-- WoW APIs
local UIParent = UIParent
-- Global vars/functions that we don't upvalue since they might get hooked, or upgraded
-- List them here for Mikk's FindGlobals script
-- GLOBALS: geterrorhandler, LibStub
--local con = LibStub("AceConsole-3.0",true)
AceGUI.WidgetRegistry = AceGUI.WidgetRegistry or {}
AceGUI.LayoutRegistry = AceGUI.LayoutRegistry or {}
AceGUI.WidgetBase = AceGUI.WidgetBase or {}
AceGUI.WidgetContainerBase = AceGUI.WidgetContainerBase or {}
AceGUI.WidgetVersions = AceGUI.WidgetVersions or {}
AceGUI.tooltip = AceGUI.tooltip or CreateFrame("GameTooltip", "AceGUITooltip", UIParent, "GameTooltipTemplate")
-- local upvalues
local WidgetRegistry = AceGUI.WidgetRegistry
local LayoutRegistry = AceGUI.LayoutRegistry
local WidgetVersions = AceGUI.WidgetVersions
--[[
xpcall safecall implementation
]]
local xpcall = xpcall
local function errorhandler(err)
return geterrorhandler()(err)
end
local function safecall(func, ...)
if func then
return xpcall(func, errorhandler, ...)
end
end
-- Recycling functions
local newWidget, delWidget
do
-- Version Upgrade in Minor 29
-- Internal Storage of the objects changed, from an array table
-- to a hash table, and additionally we introduced versioning on
-- the widgets which would discard all widgets from a pre-29 version
-- anyway, so we just clear the storage now, and don't try to
-- convert the storage tables to the new format.
-- This should generally not cause *many* widgets to end up in trash,
-- since once dialogs are opened, all addons should be loaded already
-- and AceGUI should be on the latest version available on the users
-- setup.
-- -- nevcairiel - Nov 2nd, 2009
if oldminor and oldminor < 29 and AceGUI.objPools then
AceGUI.objPools = nil
end
AceGUI.objPools = AceGUI.objPools or {}
local objPools = AceGUI.objPools
--Returns a new instance, if none are available either returns a new table or calls the given contructor
function newWidget(type)
if not WidgetRegistry[type] then
error("Attempt to instantiate unknown widget type", 2)
end
if not objPools[type] then
objPools[type] = {}
end
local newObj = next(objPools[type])
if not newObj then
newObj = WidgetRegistry[type]()
newObj.AceGUIWidgetVersion = WidgetVersions[type]
else
objPools[type][newObj] = nil
-- if the widget is older then the latest, don't even try to reuse it
-- just forget about it, and grab a new one.
if not newObj.AceGUIWidgetVersion or newObj.AceGUIWidgetVersion < WidgetVersions[type] then
return newWidget(type)
end
end
return newObj
end
-- Releases an instance to the Pool
function delWidget(obj,type)
if not objPools[type] then
objPools[type] = {}
end
if objPools[type][obj] then
error("Attempt to Release Widget that is already released", 2)
end
objPools[type][obj] = true
end
end
-------------------
-- API Functions --
-------------------
-- Gets a widget Object
--- Create a new Widget of the given type.
-- This function will instantiate a new widget (or use one from the widget pool), and call the
-- OnAcquire function on it, before returning.
-- @param type The type of the widget.
-- @return The newly created widget.
function AceGUI:Create(type)
if WidgetRegistry[type] then
local widget = newWidget(type)
if rawget(widget, "Acquire") then
widget.OnAcquire = widget.Acquire
widget.Acquire = nil
elseif rawget(widget, "Aquire") then
widget.OnAcquire = widget.Aquire
widget.Aquire = nil
end
if rawget(widget, "Release") then
widget.OnRelease = rawget(widget, "Release")
widget.Release = nil
end
if widget.OnAcquire then
widget:OnAcquire()
else
error(("Widget type %s doesn't supply an OnAcquire Function"):format(type))
end
-- Set the default Layout ("List")
safecall(widget.SetLayout, widget, "List")
safecall(widget.ResumeLayout, widget)
return widget
end
end
--- Releases a widget Object.
-- This function calls OnRelease on the widget and places it back in the widget pool.
-- Any data on the widget is being erased, and the widget will be hidden.\\
-- If this widget is a Container-Widget, all of its Child-Widgets will be releases as well.
-- @param widget The widget to release
function AceGUI:Release(widget)
if widget.isQueuedForRelease then return end
widget.isQueuedForRelease = true
safecall(widget.PauseLayout, widget)
widget.frame:Hide()
widget:Fire("OnRelease")
safecall(widget.ReleaseChildren, widget)
if widget.OnRelease then
widget:OnRelease()
-- else
-- error(("Widget type %s doesn't supply an OnRelease Function"):format(widget.type))
end
for k in pairs(widget.userdata) do
widget.userdata[k] = nil
end
for k in pairs(widget.events) do
widget.events[k] = nil
end
widget.width = nil
widget.relWidth = nil
widget.height = nil
widget.relHeight = nil
widget.noAutoHeight = nil
widget.frame:ClearAllPoints()
widget.frame:Hide()
widget.frame:SetParent(UIParent)
widget.frame.width = nil
widget.frame.height = nil
if widget.content then
widget.content.width = nil
widget.content.height = nil
end
widget.isQueuedForRelease = nil
delWidget(widget, widget.type)
end
-----------
-- Focus --
-----------
--- Called when a widget has taken focus.
-- e.g. Dropdowns opening, Editboxes gaining kb focus
-- @param widget The widget that should be focused
function AceGUI:SetFocus(widget)
if self.FocusedWidget and self.FocusedWidget ~= widget then
safecall(self.FocusedWidget.ClearFocus, self.FocusedWidget)
end
self.FocusedWidget = widget
end
--- Called when something has happened that could cause widgets with focus to drop it
-- e.g. titlebar of a frame being clicked
function AceGUI:ClearFocus()
if self.FocusedWidget then
safecall(self.FocusedWidget.ClearFocus, self.FocusedWidget)
self.FocusedWidget = nil
end
end
-------------
-- Widgets --
-------------
--[[
Widgets must provide the following functions
OnAcquire() - Called when the object is acquired, should set everything to a default hidden state
And the following members
frame - the frame or derivitive object that will be treated as the widget for size and anchoring purposes
type - the type of the object, same as the name given to :RegisterWidget()
Widgets contain a table called userdata, this is a safe place to store data associated with the wigdet
It will be cleared automatically when a widget is released
Placing values directly into a widget object should be avoided
If the Widget can act as a container for other Widgets the following
content - frame or derivitive that children will be anchored to
The Widget can supply the following Optional Members
:OnRelease() - Called when the object is Released, should remove any additional anchors and clear any data
:OnWidthSet(width) - Called when the width of the widget is changed
:OnHeightSet(height) - Called when the height of the widget is changed
Widgets should not use the OnSizeChanged events of thier frame or content members, use these methods instead
AceGUI already sets a handler to the event
:LayoutFinished(width, height) - called after a layout has finished, the width and height will be the width and height of the
area used for controls. These can be nil if the layout used the existing size to layout the controls.
]]
--------------------------
-- Widget Base Template --
--------------------------
do
local WidgetBase = AceGUI.WidgetBase
WidgetBase.SetParent = function(self, parent)
local frame = self.frame
frame:SetParent(nil)
frame:SetParent(parent.content)
self.parent = parent
end
WidgetBase.SetCallback = function(self, name, func)
if type(func) == "function" then
self.events[name] = func
end
end
WidgetBase.Fire = function(self, name, ...)
if self.events[name] then
local success, ret = safecall(self.events[name], self, name, ...)
if success then
return ret
end
end
end
WidgetBase.SetWidth = function(self, width)
self.frame:SetWidth(width)
self.frame.width = width
if self.OnWidthSet then
self:OnWidthSet(width)
end
end
WidgetBase.SetRelativeWidth = function(self, width)
if width <= 0 or width > 1 then
error(":SetRelativeWidth(width): Invalid relative width.", 2)
end
self.relWidth = width
self.width = "relative"
end
WidgetBase.SetHeight = function(self, height)
self.frame:SetHeight(height)
self.frame.height = height
if self.OnHeightSet then
self:OnHeightSet(height)
end
end
--[[ WidgetBase.SetRelativeHeight = function(self, height)
if height <= 0 or height > 1 then
error(":SetRelativeHeight(height): Invalid relative height.", 2)
end
self.relHeight = height
self.height = "relative"
end ]]
WidgetBase.IsVisible = function(self)
return self.frame:IsVisible()
end
WidgetBase.IsShown= function(self)
return self.frame:IsShown()
end
WidgetBase.Release = function(self)
AceGUI:Release(self)
end
WidgetBase.SetPoint = function(self, ...)
return self.frame:SetPoint(...)
end
WidgetBase.ClearAllPoints = function(self)
return self.frame:ClearAllPoints()
end
WidgetBase.GetNumPoints = function(self)
return self.frame:GetNumPoints()
end
WidgetBase.GetPoint = function(self, ...)
return self.frame:GetPoint(...)
end
WidgetBase.GetUserDataTable = function(self)
return self.userdata
end
WidgetBase.SetUserData = function(self, key, value)
self.userdata[key] = value
end
WidgetBase.GetUserData = function(self, key)
return self.userdata[key]
end
WidgetBase.IsFullHeight = function(self)
return self.height == "fill"
end
WidgetBase.SetFullHeight = function(self, isFull)
if isFull then
self.height = "fill"
else
self.height = nil
end
end
WidgetBase.IsFullWidth = function(self)
return self.width == "fill"
end
WidgetBase.SetFullWidth = function(self, isFull)
if isFull then
self.width = "fill"
else
self.width = nil
end
end
-- local function LayoutOnUpdate(this)
-- this:SetScript("OnUpdate",nil)
-- this.obj:PerformLayout()
-- end
local WidgetContainerBase = AceGUI.WidgetContainerBase
WidgetContainerBase.PauseLayout = function(self)
self.LayoutPaused = true
end
WidgetContainerBase.ResumeLayout = function(self)
self.LayoutPaused = nil
end
WidgetContainerBase.PerformLayout = function(self)
if self.LayoutPaused then
return
end
safecall(self.LayoutFunc, self.content, self.children)
end
--call this function to layout, makes sure layed out objects get a frame to get sizes etc
WidgetContainerBase.DoLayout = function(self)
self:PerformLayout()
-- if not self.parent then
-- self.frame:SetScript("OnUpdate", LayoutOnUpdate)
-- end
end
WidgetContainerBase.AddChild = function(self, child, beforeWidget)
if beforeWidget then
local siblingIndex = 1
for _, widget in pairs(self.children) do
if widget == beforeWidget then
break
end
siblingIndex = siblingIndex + 1
end
tinsert(self.children, siblingIndex, child)
else
tinsert(self.children, child)
end
child:SetParent(self)
child.frame:Show()
self:DoLayout()
end
WidgetContainerBase.AddChildren = function(self, ...)
for i = 1, select("#", ...) do
local child = select(i, ...)
tinsert(self.children, child)
child:SetParent(self)
child.frame:Show()
end
self:DoLayout()
end
WidgetContainerBase.ReleaseChildren = function(self)
local children = self.children
for i = 1,#children do
AceGUI:Release(children[i])
children[i] = nil
end
end
WidgetContainerBase.SetLayout = function(self, Layout)
self.LayoutFunc = AceGUI:GetLayout(Layout)
end
WidgetContainerBase.SetAutoAdjustHeight = function(self, adjust)
if adjust then
self.noAutoHeight = nil
else
self.noAutoHeight = true
end
end
local function FrameResize(this)
local self = this.obj
if this:GetWidth() and this:GetHeight() then
if self.OnWidthSet then
self:OnWidthSet(this:GetWidth())
end
if self.OnHeightSet then
self:OnHeightSet(this:GetHeight())
end
end
end
local function ContentResize(this)
if this:GetWidth() and this:GetHeight() then
this.width = this:GetWidth()
this.height = this:GetHeight()
this.obj:DoLayout()
end
end
setmetatable(WidgetContainerBase, {__index=WidgetBase})
--One of these function should be called on each Widget Instance as part of its creation process
--- Register a widget-class as a container for newly created widgets.
-- @param widget The widget class
function AceGUI:RegisterAsContainer(widget)
widget.children = {}
widget.userdata = {}
widget.events = {}
widget.base = WidgetContainerBase
widget.content.obj = widget
widget.frame.obj = widget
widget.content:SetScript("OnSizeChanged", ContentResize)
widget.frame:SetScript("OnSizeChanged", FrameResize)
setmetatable(widget, {__index = WidgetContainerBase})
widget:SetLayout("List")
return widget
end
--- Register a widget-class as a widget.
-- @param widget The widget class
function AceGUI:RegisterAsWidget(widget)
widget.userdata = {}
widget.events = {}
widget.base = WidgetBase
widget.frame.obj = widget
widget.frame:SetScript("OnSizeChanged", FrameResize)
setmetatable(widget, {__index = WidgetBase})
return widget
end
end
------------------
-- Widget API --
------------------
--- Registers a widget Constructor, this function returns a new instance of the Widget
-- @param Name The name of the widget
-- @param Constructor The widget constructor function
-- @param Version The version of the widget
function AceGUI:RegisterWidgetType(Name, Constructor, Version)
assert(type(Constructor) == "function")
assert(type(Version) == "number")
local oldVersion = WidgetVersions[Name]
if oldVersion and oldVersion >= Version then return end
WidgetVersions[Name] = Version
WidgetRegistry[Name] = Constructor
end
--- Registers a Layout Function
-- @param Name The name of the layout
-- @param LayoutFunc Reference to the layout function
function AceGUI:RegisterLayout(Name, LayoutFunc)
assert(type(LayoutFunc) == "function")
if type(Name) == "string" then
Name = Name:upper()
end
LayoutRegistry[Name] = LayoutFunc
end
--- Get a Layout Function from the registry
-- @param Name The name of the layout
function AceGUI:GetLayout(Name)
if type(Name) == "string" then
Name = Name:upper()
end
return LayoutRegistry[Name]
end
AceGUI.counts = AceGUI.counts or {}
--- A type-based counter to count the number of widgets created.
-- This is used by widgets that require a named frame, e.g. when a Blizzard
-- Template requires it.
-- @param type The widget type
function AceGUI:GetNextWidgetNum(type)
if not self.counts[type] then
self.counts[type] = 0
end
self.counts[type] = self.counts[type] + 1
return self.counts[type]
end
--- Return the number of created widgets for this type.
-- In contrast to GetNextWidgetNum, the number is not incremented.
-- @param type The widget type
function AceGUI:GetWidgetCount(type)
return self.counts[type] or 0
end
--- Return the version of the currently registered widget type.
-- @param type The widget type
function AceGUI:GetWidgetVersion(type)
return WidgetVersions[type]
end
-------------
-- Layouts --
-------------
--[[
A Layout is a func that takes 2 parameters
content - the frame that widgets will be placed inside
children - a table containing the widgets to layout
]]
-- Very simple Layout, Children are stacked on top of each other down the left side
AceGUI:RegisterLayout("List",
function(content, children)
local height = 0
local width = content.width or content:GetWidth() or 0
for i = 1, #children do
local child = children[i]
local frame = child.frame
frame:ClearAllPoints()
frame:Show()
if i == 1 then
frame:SetPoint("TOPLEFT", content)
else
frame:SetPoint("TOPLEFT", children[i-1].frame, "BOTTOMLEFT")
end
if child.width == "fill" then
child:SetWidth(width)
frame:SetPoint("RIGHT", content)
if child.DoLayout then
child:DoLayout()
end
elseif child.width == "relative" then
child:SetWidth(width * child.relWidth)
if child.DoLayout then
child:DoLayout()
end
end
height = height + (frame.height or frame:GetHeight() or 0)
end
safecall(content.obj.LayoutFinished, content.obj, nil, height)
end)
-- A single control fills the whole content area
AceGUI:RegisterLayout("Fill",
function(content, children)
if children[1] then
children[1]:SetWidth(content:GetWidth() or 0)
children[1]:SetHeight(content:GetHeight() or 0)
children[1].frame:ClearAllPoints()
children[1].frame:SetAllPoints(content)
children[1].frame:Show()
safecall(content.obj.LayoutFinished, content.obj, nil, children[1].frame:GetHeight())
end
end)
local layoutrecursionblock = nil
local function safelayoutcall(object, func, ...)
layoutrecursionblock = true
object[func](object, ...)
layoutrecursionblock = nil
end
AceGUI:RegisterLayout("Flow",
function(content, children)
if layoutrecursionblock then return end
--used height so far
local height = 0
--width used in the current row
local usedwidth = 0
--height of the current row
local rowheight = 0
local rowoffset = 0
local width = content.width or content:GetWidth() or 0
--control at the start of the row
local rowstart
local rowstartoffset
local isfullheight
local frameoffset
local lastframeoffset
local oversize
for i = 1, #children do
local child = children[i]
oversize = nil
local frame = child.frame
local frameheight = frame.height or frame:GetHeight() or 0
local framewidth = frame.width or frame:GetWidth() or 0
lastframeoffset = frameoffset
-- HACK: Why did we set a frameoffset of (frameheight / 2) ?
-- That was moving all widgets half the widgets size down, is that intended?
-- Actually, it seems to be neccessary for many cases, we'll leave it in for now.
-- If widgets seem to anchor weirdly with this, provide a valid alignoffset for them.
-- TODO: Investigate moar!
frameoffset = child.alignoffset or (frameheight / 2)
if child.width == "relative" then
framewidth = width * child.relWidth
end
frame:Show()
frame:ClearAllPoints()
if i == 1 then
-- anchor the first control to the top left
frame:SetPoint("TOPLEFT", content)
rowheight = frameheight
rowoffset = frameoffset
rowstart = frame
rowstartoffset = frameoffset
usedwidth = framewidth
if usedwidth > width then
oversize = true
end
else
-- if there isn't available width for the control start a new row
-- if a control is "fill" it will be on a row of its own full width
if usedwidth == 0 or ((framewidth) + usedwidth > width) or child.width == "fill" then
if isfullheight then
-- a previous row has already filled the entire height, there's nothing we can usefully do anymore
-- (maybe error/warn about this?)
break
end
--anchor the previous row, we will now know its height and offset
rowstart:SetPoint("TOPLEFT", content, "TOPLEFT", 0, -(height + (rowoffset - rowstartoffset) + 3))
height = height + rowheight + 3
--save this as the rowstart so we can anchor it after the row is complete and we have the max height and offset of controls in it
rowstart = frame
rowstartoffset = frameoffset
rowheight = frameheight
rowoffset = frameoffset
usedwidth = framewidth
if usedwidth > width then
oversize = true
end
-- put the control on the current row, adding it to the width and checking if the height needs to be increased
else
--handles cases where the new height is higher than either control because of the offsets
--math.max(rowheight-rowoffset+frameoffset, frameheight-frameoffset+rowoffset)
--offset is always the larger of the two offsets
rowoffset = math_max(rowoffset, frameoffset)
rowheight = math_max(rowheight, rowoffset + (frameheight / 2))
frame:SetPoint("TOPLEFT", children[i-1].frame, "TOPRIGHT", 0, frameoffset - lastframeoffset)
usedwidth = framewidth + usedwidth
end
end
if child.width == "fill" then
safelayoutcall(child, "SetWidth", width)
frame:SetPoint("RIGHT", content)
usedwidth = 0
rowstart = frame
rowstartoffset = frameoffset
if child.DoLayout then
child:DoLayout()
end
rowheight = frame.height or frame:GetHeight() or 0
rowoffset = child.alignoffset or (rowheight / 2)
rowstartoffset = rowoffset
elseif child.width == "relative" then
safelayoutcall(child, "SetWidth", width * child.relWidth)
if child.DoLayout then
child:DoLayout()
end
elseif oversize then
if width > 1 then
frame:SetPoint("RIGHT", content)
end
end
if child.height == "fill" then
frame:SetPoint("BOTTOM", content)
isfullheight = true
end
end
--anchor the last row, if its full height needs a special case since its height has just been changed by the anchor
if isfullheight then
rowstart:SetPoint("TOPLEFT", content, "TOPLEFT", 0, -height)
elseif rowstart then
rowstart:SetPoint("TOPLEFT", content, "TOPLEFT", 0, -(height + (rowoffset - rowstartoffset) + 3))
end
height = height + rowheight + 3
safecall(content.obj.LayoutFinished, content.obj, nil, height)
end)
-- Get alignment method and value. Possible alignment methods are a callback, a number, "start", "middle", "end", "fill" or "TOPLEFT", "BOTTOMRIGHT" etc.
local GetCellAlign = function (dir, tableObj, colObj, cellObj, cell, child)
local fn = cellObj and (cellObj["align" .. dir] or cellObj.align)
or colObj and (colObj["align" .. dir] or colObj.align)
or tableObj["align" .. dir] or tableObj.align
or "CENTERLEFT"
local child, cell, val = child or 0, cell or 0, nil
if type(fn) == "string" then
fn = fn:lower()
fn = dir == "V" and (fn:sub(1, 3) == "top" and "start" or fn:sub(1, 6) == "bottom" and "end" or fn:sub(1, 6) == "center" and "middle")
or dir == "H" and (fn:sub(-4) == "left" and "start" or fn:sub(-5) == "right" and "end" or fn:sub(-6) == "center" and "middle")
or fn
val = (fn == "start" or fn == "fill") and 0 or fn == "end" and cell - child or (cell - child) / 2
elseif type(fn) == "function" then
val = fn(child or 0, cell, dir)
else
val = fn
end
return fn, max(0, min(val, cell))
end
-- Get width or height for multiple cells combined
local GetCellDimension = function (dir, laneDim, from, to, space)
local dim = 0
for cell=from,to do
dim = dim + (laneDim[cell] or 0)
end
return dim + max(0, to - from) * (space or 0)
end
--[[ Options
============
Container:
- columns ({col, col, ...}): Column settings. "col" can be a number (<= 0: content width, <1: rel. width, <10: weight, >=10: abs. width) or a table with column setting.
- space, spaceH, spaceV: Overall, horizontal and vertical spacing between cells.
- align, alignH, alignV: Overall, horizontal and vertical cell alignment. See GetCellAlign() for possible values.
Columns:
- width: Fixed column width (nil or <=0: content width, <1: rel. width, >=1: abs. width).
- min or 1: Min width for content based width
- max or 2: Max width for content based width
- weight: Flexible column width. The leftover width after accounting for fixed-width columns is distributed to weighted columns according to their weights.
- align, alignH, alignV: Overwrites the container setting for alignment.
Cell:
- colspan: Makes a cell span multiple columns.
- rowspan: Makes a cell span multiple rows.
- align, alignH, alignV: Overwrites the container and column setting for alignment.
]]
AceGUI:RegisterLayout("Table",
function (content, children)
local obj = content.obj
obj:PauseLayout()
local tableObj = obj:GetUserData("table")
local cols = tableObj.columns
local spaceH = tableObj.spaceH or tableObj.space or 0
local spaceV = tableObj.spaceV or tableObj.space or 0
local totalH = (content:GetWidth() or content.width or 0) - spaceH * (#cols - 1)
-- We need to reuse these because layout events can come in very frequently
local layoutCache = obj:GetUserData("layoutCache")
if not layoutCache then
layoutCache = {{}, {}, {}, {}, {}, {}}
obj:SetUserData("layoutCache", layoutCache)
end
local t, laneH, laneV, rowspans, rowStart, colStart = unpack(layoutCache)
-- Create the grid
local n, slotFound = 0
for i,child in ipairs(children) do
if child:IsShown() then
repeat
n = n + 1
local col = (n - 1) % #cols + 1
local row = ceil(n / #cols)
local rowspan = rowspans[col]
local cell = rowspan and rowspan.child or child
local cellObj = cell:GetUserData("cell")
slotFound = not rowspan
-- Rowspan
if not rowspan and cellObj and cellObj.rowspan then
rowspan = {child = child, from = row, to = row + cellObj.rowspan - 1}
rowspans[col] = rowspan
end
if rowspan and i == #children then
rowspan.to = row
end
-- Colspan
local colspan = max(0, min((cellObj and cellObj.colspan or 1) - 1, #cols - col))
n = n + colspan
-- Place the cell
if not rowspan or rowspan.to == row then
t[n] = cell
rowStart[cell] = rowspan and rowspan.from or row
colStart[cell] = col
if rowspan then
rowspans[col] = nil
end
end
until slotFound
end
end
local rows = ceil(n / #cols)
-- Determine fixed size cols and collect weights
local extantH, totalWeight = totalH, 0
for col,colObj in ipairs(cols) do
laneH[col] = 0
if type(colObj) == "number" then
colObj = {[colObj >= 1 and colObj < 10 and "weight" or "width"] = colObj}
cols[col] = colObj
end
if colObj.weight then
-- Weight
totalWeight = totalWeight + (colObj.weight or 1)
else
if not colObj.width or colObj.width <= 0 then
-- Content width
for row=1,rows do
local child = t[(row - 1) * #cols + col]
if child then
local f = child.frame
f:ClearAllPoints()
local childH = f:GetWidth() or 0
laneH[col] = max(laneH[col], childH - GetCellDimension("H", laneH, colStart[child], col - 1, spaceH))
end
end
laneH[col] = max(colObj.min or colObj[1] or 0, min(laneH[col], colObj.max or colObj[2] or laneH[col]))
else
-- Rel./Abs. width
laneH[col] = colObj.width < 1 and colObj.width * totalH or colObj.width
end
extantH = max(0, extantH - laneH[col])
end
end
-- Determine sizes based on weight
local scale = totalWeight > 0 and extantH / totalWeight or 0
for col,colObj in pairs(cols) do
if colObj.weight then
laneH[col] = scale * colObj.weight
end
end
-- Arrange children
for row=1,rows do
local rowV = 0
-- Horizontal placement and sizing
for col=1,#cols do
local child = t[(row - 1) * #cols + col]
if child then
local colObj = cols[colStart[child]]
local cellObj = child:GetUserData("cell")
local offsetH = GetCellDimension("H", laneH, 1, colStart[child] - 1, spaceH) + (colStart[child] == 1 and 0 or spaceH)
local cellH = GetCellDimension("H", laneH, colStart[child], col, spaceH)
local f = child.frame
f:ClearAllPoints()
local childH = f:GetWidth() or 0
local alignFn, align = GetCellAlign("H", tableObj, colObj, cellObj, cellH, childH)
f:SetPoint("LEFT", content, offsetH + align, 0)
if child:IsFullWidth() or alignFn == "fill" or childH > cellH then
f:SetPoint("RIGHT", content, "LEFT", offsetH + align + cellH, 0)
end
if child.DoLayout then
child:DoLayout()
end
rowV = max(rowV, (f:GetHeight() or 0) - GetCellDimension("V", laneV, rowStart[child], row - 1, spaceV))
end
end
laneV[row] = rowV
-- Vertical placement and sizing
for col=1,#cols do
local child = t[(row - 1) * #cols + col]
if child then
local colObj = cols[colStart[child]]
local cellObj = child:GetUserData("cell")
local offsetV = GetCellDimension("V", laneV, 1, rowStart[child] - 1, spaceV) + (rowStart[child] == 1 and 0 or spaceV)
local cellV = GetCellDimension("V", laneV, rowStart[child], row, spaceV)
local f = child.frame
local childV = f:GetHeight() or 0
local alignFn, align = GetCellAlign("V", tableObj, colObj, cellObj, cellV, childV)
if child:IsFullHeight() or alignFn == "fill" then
f:SetHeight(cellV)
end
f:SetPoint("TOP", content, 0, -(offsetV + align))
end
end
end
-- Calculate total height
local totalV = GetCellDimension("V", laneV, 1, #laneV, spaceV)
-- Cleanup
for _,v in pairs(layoutCache) do wipe(v) end
safecall(obj.LayoutFinished, obj, nil, totalV)
obj:ResumeLayout()
end)