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druidmana.lua
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druidmana.lua
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--[[ Element: Druid Mana Bar
Handles updating and visibility of a status bar displaying the druid's mana
while outside of caster form.
Widget
DruidMana - A StatusBar to represent current caster mana.
Sub-Widgets
.bg - A Texture which functions as a background. It will inherit the color of
the main StatusBar.
Notes
The default StatusBar texture will be applied if the UI widget doesn't have a
status bar texture or color defined.
Options
.colorClass - Use `self.colors.class[class]` to color the bar. This will
always use DRUID as class.
.colorSmooth - Use `self.colors.smooth` to color the bar with a smooth
gradient based on the players current mana percentage.
.colorPower - Use `self.colors.power[token]` to color the bar. This will
always use MANA as token.
Sub-Widget Options
.multiplier - Defines a multiplier, which is used to tint the background based
on the main widgets R, G and B values. Defaults to 1 if not
present.
Examples
-- Position and size
local DruidMana = CreateFrame("StatusBar", nil, self)
DruidMana:SetSize(20, 20)
DruidMana:SetPoint('TOP')
DruidMana:SetPoint('LEFT')
DruidMana:SetPoint('RIGHT')
-- Add a background
local Background = DruidMana:CreateTexture(nil, 'BACKGROUND')
Background:SetAllPoints(DruidMana)
Background:SetTexture(1, 1, 1, .5)
-- Register it with oUF
self.DruidMana = DruidMana
self.DruidMana.bg = Background
Hooks
Override(self) - Used to completely override the internal update function.
Removing the table key entry will make the element fall-back
to its internal function again.
]]
if(select(2, UnitClass('player')) ~= 'DRUID') then return end
local _, ns = ...
local oUF = ns.oUF
local function Update(self, event, unit, powertype)
if(unit ~= 'player' or (powertype and powertype ~= 'MANA')) then return end
local druidmana = self.DruidMana
if(druidmana.PreUpdate) then druidmana:PreUpdate(unit) end
-- Hide the bar if the active power type is mana.
if(UnitPowerType('player') == SPELL_POWER_MANA) then
return druidmana:Hide()
else
druidmana:Show()
end
local min, max = UnitPower('player', SPELL_POWER_MANA), UnitPowerMax('player', SPELL_POWER_MANA)
druidmana:SetMinMaxValues(0, max)
druidmana:SetValue(min)
local r, g, b, t
if(druidmana.colorClass) then
t = self.colors.class['DRUID']
elseif(druidmana.colorSmooth) then
r, g, b = self.ColorGradient(min, max, unpack(druidmana.smoothGradient or self.colors.smooth))
elseif(druidmana.colorPower) then
t = self.colors.power['MANA']
end
if(t) then
r, g, b = t[1], t[2], t[3]
end
if(b) then
druidmana:SetStatusBarColor(r, g, b)
local bg = druidmana.bg
if(bg) then
local mu = bg.multiplier or 1
bg:SetVertexColor(r * mu, g * mu, b * mu)
end
end
if(druidmana.PostUpdate) then
return druidmana:PostUpdate(unit, min, max)
end
end
local function Path(self, ...)
return (self.DruidMana.Override or Update) (self, ...)
end
local function ForceUpdate(element)
return Path(element.__owner, 'ForceUpdate', element.__owner.unit)
end
local OnDruidManaUpdate
do
local UnitPower = UnitPower
OnDruidManaUpdate = function(self)
local unit = self.__owner.unit
local mana = UnitPower(unit, SPELL_POWER_MANA)
if(mana ~= self.min) then
self.min = mana
return Path(self.__owner, 'OnDruidManaUpdate', unit)
end
end
end
local Enable = function(self, unit)
local druidmana = self.DruidMana
if(druidmana and unit == 'player') then
druidmana.__owner = self
druidmana.ForceUpdate = ForceUpdate
if(druidmana.frequentUpdates) then
druidmana:SetScript('OnUpdate', OnDruidManaUpdate)
else
self:RegisterEvent('UNIT_POWER', Path)
end
self:RegisterEvent('UNIT_DISPLAYPOWER', Path)
self:RegisterEvent('UNIT_MAXPOWER', Path)
if(druidmana:IsObjectType'StatusBar' and not druidmana:GetStatusBarTexture()) then
druidmana:SetStatusBarTexture[[Interface\TargetingFrame\UI-StatusBar]]
end
return true
end
end
local Disable = function(self)
local druidmana = self.DruidMana
if(druidmana) then
if(druidmana:GetScript'OnUpdate') then
druidmana:SetScript("OnUpdate", nil)
else
self:UnregisterEvent('UNIT_POWER', Path)
end
self:UnregisterEvent('UNIT_DISPLAYPOWER', Path)
self:UnregisterEvent('UNIT_MAXPOWER', Path)
end
end
oUF:AddElement('DruidMana', Path, Enable, Disable)